Contents of the package leaflet for the medicine VOCABRIA 600mg long-release injection suspension
1. NAME OF THE MEDICINAL PRODUCT
400 mg
Vocabria 400 mg prolonged-release suspension for injection600 mg
Vocabria 600 mg prolonged-release suspension for injection
2. QUALITATIVE AND QUANTITATIVE COMPOSITION
400 mg
Each vial contains 400 mg cabotegravir in 2 mL.
600 mg
Each vial contains 600 mg cabotegravir in 3 mL.
For the full list of excipients, see section 6.1.
3. PHARMACEUTICAL FORM
Prolonged-release suspension for injection.
White to light pink suspension.
4. CLINICAL PARTICULARS
4.1 Therapeutic indications
Vocabria injection is indicated, in combination with rilpivirine injection, for the treatment of Human
Immunodeficiency Virus type 1 (HIV-1) infection in adults and adolescents (at least 12 years of ageand weighing at least 35 kg), who are virologically suppressed (HIV-1 RNA <50 copies/mL) on astable antiretroviral regimen without present or past evidence of viral resistance to, and no priorvirological failure with agents of the non-nucleoside reverse transcriptase inhibitor (NNRTI) andintegrase inhibitor (INI) class (see sections 4.2, pct. 4.4 and 5.1).
4.2 Posology and method of administration
Vocabria should be prescribed by physicians experienced in the management of HIV infection.
Each injection should be administered by a healthcare professional.
Vocabria injection is indicated for the treatment of HIV-1 in combination with rilpivirine injection,therefore, the prescribing information for rilpivirine injection should be consulted for recommendeddosing.
Prior to starting Vocabria injection, healthcare professionals should have carefully selectedpatients who agree to the required injection schedule and counsel patients about the importanceof adherence to scheduled dosing visits to help maintain viral suppression and reduce the risk ofviral rebound and potential development of resistance with missed doses.
Following discontinuation of Vocabria and rilpivirine injection, it is essential to adopt analternative, fully suppressive antiretroviral regimen no later than one month after the finalinjection of Vocabria when dosed monthly and no later than two months after the final injectionof Vocabria when dosed every 2 months (see section 4.4).
The healthcare provider and patient may decide to use cabotegravir tablets as an oral lead-in prior tothe initiation of Vocabria injection to assess tolerability to cabotegravir (see Table 1) or may proceeddirectly to Vocabria injections (see Table 2 for monthly and Table 3 for every 2 month dosingrecommendations).
PosologyAdults and adolescents (at least 12 years of age and weighing at least 35 kg)
Oral lead-in
When used for oral lead-in, oral cabotegravir together with oral rilpivirine should be taken forapproximately one month (at least 28 days) to assess tolerability to cabotegravir and rilpivirine (seesection 4.4). One cabotegravir 30 mg tablet should be taken with one rilpivirine 25 mg tablet, oncedaily. When administered with rilpivirine, cabotegravir tablets should be taken with a meal (seecabotegravir tablet prescribing information).
Table 1 Oral Lead-in Dosing Schedule
ORAL LEAD-IN
Medicinal For one month (at least 28 days), followed by the Initiation Injectionaproduct
Cabotegravir 30 mg once daily
Rilpivirine 25 mg once dailya see Table 2 for monthly injection dosing schedule and Table 3 for every 2 month dosing schedule.
Monthly dosing
Initiation injection (600 mg corresponding to 3 mL dose)
On the final day of current antiretroviral therapy or oral lead-in therapy, the recommended initial doseof Vocabria injection is a single 600 mg intramuscular injection. Vocabria injection and rilpivirineinjection should be administered at separate gluteal injection sites at the same visit.
Continuation injection (400 mg corresponding to 2 mL dose)
After the initiation injection, the continuation injection dose of Vocabria is a single 400 mg monthlyintramuscular injection. Vocabria injection and rilpivirine injection should be administered at separategluteal injection sites at the same visit. Patients may be given injections up to 7 days before or after thedate of the monthly 400 mg injection schedule.
Table 2 Recommended monthly intramuscular dosing schedule
INITIATION CONTINUATION INJECTION
INJECTION
Medicinal product Initiate injection on One month after initiationthe last day of either injection and monthly onwardscurrent ART therapyor oral lead-in (ifu sed)
Vocabria 600 mg 400 mg
Rilpivirine 900 mg 600 mg
Every 2 Month Dosing
Initiation Injections - one month apart (600 mg)
On the final day of current antiretroviral therapy or oral lead-in therapy, the recommended initial
Vocabria injection is a single 600 mg intramuscular injection.
One month later, a second Vocabria 600 mg intramuscular injection should be administered. Patientsmay be given the second 600 mg initiation injection up to 7 days before or after the scheduled dosingdate.
Vocabria injection and rilpivirine injection should be administered at separate gluteal injection sites atthe same visit.
Continuation Injections - 2 months apart (600 mg)
After the initiation injections, the recommended Vocabria continuation injection dose is a single600 mg intramuscular injection administered every 2 months. Vocabria injection and rilpivirineinjection should be administered at separate gluteal injection sites at the same visit. Patients may begiven injections up to 7 days before or after the date of the every 2 month, 600 mg injection schedule.
Table 3 Recommended every 2 month intramuscular dosing schedule
INITIATION INJECTIONS C ONTINUATION INJECTIONS
Medicinal Initiate injection on the last Two months after last initiationproduct day of either current ART injection and every 2 monthstherapy or oral lead-in (if onwardsused). One month later, asecond initiation injections hould be administered.
Vocabria 600 mg 600 mg
Rilpivirine 900 mg 900 mg
Dosing recommendations when switching from monthly to every 2 month injections
Patients switching from a monthly continuation injection schedule to an every 2 month continuationinjection schedule should receive a single 600 mg intramuscular injection of cabotegravir one monthafter the last 400 mg continuation injection dose and then 600 mg every 2 months thereafter.
Dosing recommendations when switching from every 2 month to monthly injections
Patients switching from an every 2 month continuation injection schedule to a monthly continuationdosing schedule should receive a single 400 mg intramuscular injection of cabotegravir 2 months afterthe last 600 mg continuation injection dose and then 400 mg monthly thereafter.
Missed dosesPatients who miss a scheduled injection visit should be clinically reassessed to ensure resumption oftherapy remains appropriate. See Tables 4 and 5 for dosing recommendations after a missed injection.
Missed monthly injection
If a patient plans to miss a scheduled injection visit by more than 7 days, oral therapy (one 30 mgcabotegravir tablet and one 25 mg rilpivirine tablet once daily) may be used to replace up to 2consecutive monthly injection visits. Limited data is available on oral bridging with other fullysuppressive antiretroviral therapy (ART) (mainly INI-based), see section 5.1. For oral therapydurations greater than two months, an alternative oral regimen is recommended.
The first dose of oral therapy should be taken one month (+/- 7 days) after the last injection doses of
Vocabria and rilpivirine. Injection dosing should be resumed on the day oral dosing completes, asrecommended in Table 4.
Table 4 Vocabria injection dosing recommendations after missed injections or oraltherapy for patients on monthly injection dosing
Time since last Recommendationinjection≤2 months: Continue with the monthly 400 mg injection schedule as soon aspossible>2 months: Re-initiate the patient on the 600 mg dose, and then continue tofollow the monthly 400 mg injection schedule.
Missed 2 month injection
If a patient plans to miss a scheduled Vocabria injection visit by more than 7 days, oral therapy (one30 mg cabotegravir tablet and one 25 mg rilpivirine tablet, once daily) may be used to replace one, 2-monthly injection visit. Limited data is available on oral bridging with other fully suppressive ART(mainly INI-based), see section 5.1. For oral therapy durations greater than two months, an alternativeoral regimen is recommended.
The first dose of oral therapy should be taken two months (+/- 7 days) after the last injection doses ofcabotegravir and rilpivirine. Injection dosing should be resumed on the day oral dosing completes, asrecommended in Table 5.
Table 5 Vocabria injection dosing recommendations after missed injections or oraltherapy for patients on every 2 month injection dosing
Missed Injection Time since last Recommendation (all injections are 3 mL)
Visit injection
Injection 2 ≤2 months Resume with 600 mg injection as soon as possibleand then continue with the every 2 month injectionschedule.
>2 months Re-initiate the patient on the 600 mg dose, followedby a second 600 mg initiation injection one monthlater. Then follow the every 2 month injectionschedule.
Injection 3 or ≤3 months Resume with 600 mg injection as soon as possiblelater and then continue with the every 2 month injectionschedule.
>3 months Re-initiate the patient on the 600 mg dose, followedby a second 600 mg initiation injection one monthlater. Then follow the every 2 month injectionschedule.
ElderlyNo dose adjustment is required in elderly patients. There are limited data available on the use ofcabotegravir in patients aged 65 years and over (see section 5.2).
Renal impairmentNo dosage adjustment is required in patients with mild (creatinine clearance ≥60 to <90 mL/min),moderate (creatinine clearance ≥30 to <60 mL/min) or severe renal impairment (creatinineclearance ≥15 to <30 mL/min and not on dialysis [see section 5.2]). Cabotegravir has not been studiedin patients with end-stage renal disease on renal replacement therapy. As cabotegravir is greater than99% protein bound, dialysis is not expected to alter exposures of cabotegravir. If administered in apatient on renal replacement therapy, cabotegravir should be used with caution.
Hepatic impairmentNo dosage adjustment is required in patients with mild or moderate hepatic impairment (Child-Pughscore A or B). Cabotegravir has not been studied in patients with severe hepatic impairment (Child-
Pugh score C, [see section 5.2]). If administered in a patient with severe hepatic impairment,cabotegravir should be used with caution.
Paediatric populationThe safety and efficacy of Vocabria in children aged less than 12 years and adolescents weighing lessthan 35 kg have not been established. No data are available.
Method of administrationFor intramuscular use. Care should be taken to avoid inadvertent injection into a blood vessel.
Vocabria injection should be administered by a healthcare professional. For instructions onadministration, see “Instructions for Use” in the package leaflet. These instructions should be carefullyfollowed when preparing the suspension for injection to avoid leakage.
Vocabria injection should always be co-administered with rilpivirine injection. The order of injectionsis not important. The prescribing information for rilpivirine injection should be consulted forrecommended dosing.
When administering Vocabria injection, healthcare professionals should take into consideration the
Body Mass Index (BMI) of the patient to ensure that the needle length is sufficient to reach the gluteusmuscle.
Hold the vial firmly and vigorously shake for a full 10 seconds. Invert the vial and check theresuspension. It should look uniform. If the suspension is not uniform, shake the vial again. It isnormal to see small air bubbles.
Injections must be administered to the ventrogluteal (recommended) or the dorsogluteal sites.
4.3 Contraindications
Hypersensitivity to the active substance or to any of the excipients listed in section 6.1.
Concomitant use with rifampicin, rifapentine, carbamazepine, oxcarbazepine, phenytoin orphenobarbital (see section 4.5).
4.4 Special warnings and precautions for use
Risk of resistance following treatment discontinuation
To minimise the risk of developing viral resistance it is essential to adopt an alternative, fullysuppressive antiretroviral regimen no later than one month after the final injection of Vocabriawhen dosed monthly and no later than two months after the final injection of Vocabria whendosed every 2 months.
If virologic failure is suspected, an alternative regimen should be adopted as soon as possible.
Long acting properties of Vocabria injection
Residual concentrations of cabotegravir may remain in the systemic circulation of patients forprolonged periods (up to 12 months or longer), therefore, physicians should take the prolonged releasecharacteristics of Vocabria injection into consideration when the medicinal product is discontinued(see sections 4.5, pct. 4.6, 4.7 and 4.9).
Baseline factors associated with virological failure
Before starting the regimen, it should be taken into account that multivariable analyses indicate that acombination of at least 2 of the following baseline factors may be associated with an increased risk ofvirological failure: archived rilpivirine resistance mutations, HIV-1 subtype A6/A1, or
BMI 30 kg/m2. Available data suggest that virologic failure occurs more often when these patientsare treated according to the every 2 month dosing regimen as compared to the monthly dosingregimen. In patients with an incomplete or uncertain treatment history without pre-treatment resistanceanalyses, caution is warranted in the presence of either BMI 30 kg/m2 or HIV-1 A6/A1 subtype (seesection 5.1).
Severe cutaneous adverse reactions (SCARs)The severe cutaneous adverse reactions, Stevens-Johnson syndrome (SJS) and toxic epidermalnecrolysis (TEN), which can be life-threatening or fatal, have been reported very rarely in associationwith cabotegravir treatment.
At the time of prescription, patients should be advised of the signs and symptoms and monitoredclosely for skin reactions. If signs and symptoms suggestive of these reactions appear, cabotegravirshould be withdrawn immediately and an alternative treatment considered (as appropriate). If thepatient has developed a serious reaction such as SJS or TEN with the use of cabotegravir, treatmentwith cabotegravir must not be restarted in this patient at any time.
Hypersensitivity reactionsHypersensitivity reactions have been reported in association with integrase inhibitors includingcabotegravir. These reactions were characterised by rash, constitutional findings and sometimes organdysfunction, including liver injury. Vocabria and other suspected medicinal products should bediscontinued immediately, should signs or symptoms of hypersensitivity develop (including, but notlimited to, severe rash, or rash accompanied by fever, general malaise, fatigue, muscle or joint aches,blisters, oral lesions, conjunctivitis, facial oedema, hepatitis, eosinophilia or angioedema). Clinicalstatus, including liver aminotransferases should be monitored and appropriate therapy initiated. (Seesections 4.2, Long acting properties of Vocabria injection, pct. 4.8 and 5.1).
Hepatoxicity
Hepatotoxicity has been reported in a limited number of patients receiving Vocabria with or withoutknown pre-existing hepatic disease (see section 4.8). Administration of cabotegravir oral lead-in wasused in clinical studies to help identify patients who may be at risk of hepatotoxicity.
Monitoring of liver chemistries is recommended and treatment with Vocabria should be discontinuedif hepatotoxicity is suspected (see Long acting properties of Vocabria injection).
HBV/HCV co-infection
Patients with hepatitis B co-infection were excluded from studies with Vocabria. It is notrecommended to initiate Vocabria in patients with hepatitis B co-infection. Physicians should refer tocurrent treatment guidelines for the management of HIV infection in patients co-infected with hepatitis
B virus.
Limited data is available in patients with hepatitis C co-infection. Monitoring of liver function isrecommended in patients with hepatitis C co-infection.
Interactions with medicinal productsCaution should be given to prescribing Vocabria injection with medicinal products that may reduce itsexposure (see Section 4.5).
Concomitant use of Vocabria injection with rifabutin is not recommended (see section 4.5).
Immune reactivation syndromeIn HIV-infected patients with severe immune deficiency at the time of institution of combinationantiretroviral therapy (CART), an inflammatory reaction to asymptomatic or residual opportunisticpathogens may arise and cause serious clinical conditions, or aggravation of symptoms. Typically,such reactions have been observed within the first few weeks or months of initiation of CART.
Relevant examples are cytomegalovirus retinitis, generalised and/or focal mycobacterial infections,and Pneumocystis jirovecii pneumonia. Any inflammatory symptoms should be evaluated andtreatment instituted when necessary. Autoimmune disorders (such as Graves’ disease and autoimmunehepatitis) have also been reported to occur in the setting of immune reconstitution, however, thereported time to onset is more variable and these events can occur many months after initiation oftreatment.
Opportunistic infectionsPatients should be advised that Vocabria or any other antiretroviral therapy do not cure HIV infectionand that they may still develop opportunistic infections and other complications of HIV infection.
Therefore, patients should remain under close clinical observation by physicians experienced in thetreatment of these associated HIV diseases.
4.5 Interaction with other medicinal products and other forms of interaction
Vocabria injection, in combination with rilpivirine injection, is indicated for the treatment of HIV-1,therefore, the prescribing information for rilpivirine injection should be consulted for associatedinteractions.
Effect of other medicinal products on the pharmacokinetics of cabotegravir
Cabotegravir is primarily metabolised by uridine diphosphate glucuronosyl transferase (UGT) 1A1 andto a lesser extent by UGT1A9. Medicinal products which are strong inducers of UGT1A1 or UGT1A9are expected to decrease cabotegravir plasma concentrations leading to lack of efficacy (see section 4.3and table 6 below). In poor metabolizers of UGT1A1, representing a maximum clinical UGT1A1inhibition, the mean AUC, Cmax and Ctau of oral cabotegravir increased by up to 1.5-fold. The impact ofan UGT1A1 inhibitor may be slightly more pronounced, however, considering the safety margins ofcabotegravir, this increase is not expected to be clinically relevant. No dosing adjustments for
Vocabria are, therefore, recommended in the presence of UGT1A1 inhibitors (e.g. atazanavir,erlotinib, sorafenib).
Cabotegravir is a substrate of P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP),however, because of its high permeability, no alteration in absorption is expected when co-administered with either P-gp or BCRP inhibitors.
Effect of cabotegravir on the pharmacokinetics of other medicinal products
In vivo, cabotegravir did not have an effect on midazolam, a cytochrome P450 (CYP) 3A4 probe. Invitro, cabotegravir did not induce CYP1A2, CYP2B6, or CYP3A4.
In vitro cabotegravir inhibited organic anion transporters (OAT) 1 (IC50=0.81 µM) and OAT3(IC50=0.41 µM). Therefore, caution is advised when co-dosing with narrow therapeutic index OAT1/3substrate drugs (e.g. methotrexate).
Vocabria and rilpivirine injections are intended for use as a complete regimen for the treatment of
HIV-1 infection and should not be administered with other antiretroviral medicinal products for thetreatment of HIV. The following information regarding drug-drug interactions with other antiretroviralmedicinal products is provided in the event that Vocabria and rilpivirine injections are stopped andinitiation of an alternative antiviral therapy is necessary (see section 4.4). Based on the in vitro andclinical drug interaction profile, cabotegravir is not expected to alter concentrations of other anti-retroviral medications including protease inhibitors, nucleoside reverse transcriptase inhibitors, non-nucleoside reverse transcriptase inhibitors, integrase inhibitors, entry inhibitors or ibalizumab.
No drug interaction studies have been performed with cabotegravir injection. The drug interaction dataprovided in Table 6 is obtained from studies with oral cabotegravir (increase is indicated as “↑”,decrease as “↓”, no change as “↔”, area under the concentration versus time curve as “AUC”,maximum observed concentration as “Cmax”, concentration at end of dosing interval as “Cτ”).
Table 6 Drug Interactions
Medicinal products Interaction Recommendations concerningby therapeutic areas Geometric mean change (%) co-administration
HIV-1 Antiviral medicinal products
Non-nucleoside Cabotegravir Etravirine did not significantly change
Reverse Transcriptase AUC 1% cabotegravir plasma concentration. No dose
Inhibitor: C 4% adjustment of Vocabria is necessary whenmax
Etravirine Cτ 0% initiating injections following etravirine use.
Non-nucleoside Cabotegravir Rilpivirine did not significantly change
Reverse Transcriptase AUC 12% cabotegravir plasma concentration. No dose
Inhibitor: C 5% adjustment of Vocabria injection is necessary whenmax
Rilpivirine Cτ 14% co-administered with rilpivirine.
Rilpivirine
AUC 1%
Cmax 4%
Cτ 8%
Anticonvulsants
Carbamazepine Cabotegravir Metabolic inducers may significantly decrease
Oxcarbazepine cabotegravir plasma concentration. Concomitant
Phenytoin use is contraindicated (see section 4.3).
Phenobarbital
Antimycobacterials
Rifampicin Cabotegravir Rifampicin significantly decreased cabotegravir
AUC 59% plasma concentration which is likely to result in
C 6% loss of therapeutic effect. Dosing recommendationsmaxfor co-administration of Vocabria with rifampicinhave not been established and co-administration of
Vocabria with rifampicin is contraindicated (seesection 4.3).
Rifapentine Cabotegravir Rifapentine may significantly decreasecabotegravir plasma concentrations. Concomitantuse is contraindicated (see section 4.3).
Rifabutin Cabotegravir Rifabutin may decrease cabotegravir plasma
AUC 21% concentration. Concomitant use should be avoided.
Cmax 17%
Cτ 26%
Oral contraceptivesEthinyl estradiol (EE) EE Cabotegravir did not significantly change ethinyland Levonorgestrel AUC 2% estradiol and levonorgestrel plasma concentrations(LNG) C 8% to a clinically relevant extent. No dose adjustmentmax
Cτ 0% of oral contraceptives is necessary when co-administered with Vocabria.
LNG
AUC 12%
Cmax 5%
Cτ 7%
4.6 Fertility, pregnancy and lactation
PregnancyThere are a limited amount of data from the use of cabotegravir in pregnant women. The effect of
Vocabria on human pregnancy is unknown.
Cabotegravir was not teratogenic when studied in pregnant rats and rabbits but, exposures higher thanthe therapeutic dose showed reproductive toxicity in animals (see section 5.3). The relevance to humanpregnancy is unknown.
Vocabria injection is not recommended during pregnancy unless the expected benefit justifies thepotential risk to the foetus.
Cabotegravir has been detected in systemic circulation for up to 12 months or longer after an injection(see section 4.4).
Breast-feedingIt is expected that cabotegravir will be secreted into human milk based on animal data, although thishas not been confirmed in humans. Cabotegravir may be present in human milk for up to 12 months orlonger after the last cabotegravir injection.
It is recommended that women living with HIV do not breast-feed their infants in order to avoidtransmission of HIV.
FertilityThere are no data on the effects of cabotegravir on human male or female fertility. Animal studiesindicate no effects of cabotegravir on male or female fertility (see section 5.3).
4.7 Effects on ability to drive and use machines
Patients should be informed that dizziness, fatigue and somnolence has been reported during treatmentwith Vocabria injection. The clinical status of the patient and the adverse reaction profile of Vocabriainjection should be borne in mind when considering the patient’s ability to drive or operate machinery.
4.8 Undesirable effects
Summary of the safety profileThe most frequently reported adverse reactions (ARs) from monthly dosing studies were injection sitereactions (up to 84%), headache (up to 12%) and pyrexia5 (10%).
The most frequently reported ARs from ATLAS-2M every 2 month dosing were injection sitereactions (76%), headache (7%) and pyrexia5 (7%).
The SCARs SJS and TEN have been reported in association with cabotegravir treatment (see section4.4).
Tabulated list of adverse reactionsThe ARs identified for cabotegravir or rilpivirine are listed in Table 7 by body system organ class andfrequency. Frequencies are defined as very common (1/10), common (1/100 to <1/10), uncommon(1/1 000 to <1/100), rare (1/10 000 to <1/1 000), very rare (<1/10 000).
Table 7 Tabulated summary of adverse reactions1
MedDRA System Organ Frequency ARs for Vocabria + rilpivirine regimen
Class (SOC) Category
Immune system disorders Uncommon Hypersensitivity*
Psychiatric disorders Common Depression
Anxiety
Abnormal dreams
Insomnia
Uncommon Suicide attempt; Suicidal ideation(particularly in patients with a pre-existinghistory of psychiatric illness)
Nervous system disorders Very common Headache
Common Dizziness
Uncommon Somnolence
Vasovagal reactions (in response toinjections)
Gastrointestinal disorders Common Nausea
VomitingAbdominal pain2
Flatulence
DiarrhoeaHepatobiliary Disorders Uncommon Hepatotoxicity
Skin and subcutaneous tissue Common Rash3disorders Uncommon Urticaria*
Angioedema*
Very rare Stevens-Johnson syndrome*, toxic epidermalnecrolysis*
Musculoskeletal and Common Myalgiaconnective tissue disorders
General disorders and Very common Injection site reactions (pain4 and discomfort,administrative site conditions nodule, induration)
Pyrexia5
Common Injection site reactions (swelling, erythema,pruritus, bruising, warmth, haematoma)
FatigueAsthenia
Malaise
Uncommon Injection site reactions (cellulitis, abscess,anaesthesia, haemorrhage, discolouration)
Investigations Common Weight increased
Uncommon Transaminase increased
Blood bilirubin increased1The frequency of the identified ARs are based on all reported occurrences of the events and are not limited tothose considered at least possibly related by the investigator.2Abdominal pain includes the following grouped MedDRA preferred term: abdominal pain, upper abdominalpain.3Rash includes the following grouped MedDRA preferred terms: rash, rash erythematous, rash generalised, rashmacular, rash maculo-papular, rash morbilliform, rash papular, rash pruritic.4May rarely result in temporary gait disturbance.
5Pyrexia includes the following grouped MedDRA preferred terms: feeling hot, body temperature increased. Themajority of pyrexia events were reported within one week of injections.
*Please refer to section 4.4.
The overall safety profile at Week 96 and Week 124 in the FLAIR study was consistent with thatobserved at Week 48, with no new safety findings identified. In the extension phase of the FLAIR study,initiating the Vocabria and rilpivirine injection regimen with Direct to Injection did not identify any newsafety concerns related to omitting the oral lead-in phase (see section 5.1).
Description of selected adverse reactionsLocal injection site reactions (ISRs)
Up to 1% of subjects discontinued treatment with Vocabria plus rilpivirine because of ISRs. Whendosing monthly, up to 84% of subjects reported injection site reactions; out of 30393 injections, 6815
ISRs were reported. When dosing every 2 months, 76% of patients reported injection site reactions;out of 8470 injections, 2507 ISRs were reported.
The severity of reactions was generally mild (Grade 1, 70%-75% of subjects) or moderate (Grade 2,27%-36% of subjects). 3-4% of subjects experienced severe (Grade 3) ISRs. The median duration ofoverall ISR events was 3 days. The percentage of subjects reporting ISRs decreased over time.
Weight increased
At the Week 48 time point, subjects in studies FLAIR and ATLAS, who received Vocabria plusrilpivirine gained a median of 1.5 kg in weight subjects continuing on their current antiretroviraltherapy (CAR) gained a median of 1.0 kg (pooled analysis). In the individual studies FLAIR and
ATLAS, the median weight gains in the Vocabria plus rilpivirine arms were 1.3 kg and 1.8 kgrespectively, compared to 1.5 kg and 0.3 kg in the CAR arms.
At the 48 week timepoint, in ATLAS-2M the median weight gain in both the monthly and 2-monthly
Vocabria plus rilpivirine dosing arms was 1.0 kg.
Changes in laboratory chemistriesSmall, non-progressive increases in total bilirubin (without clinical jaundice) were observed withtreatment with Vocabria plus rilpivirine. These changes are not considered clinically relevant as theylikely reflect competition between cabotegravir and unconjugated bilirubin for a common clearancepathway (UGT1A1).
Elevated transaminases (ALT/AST) were observed in subjects receiving Vocabria plus rilpivirineduring clinical studies. These elevations were primarily attributed to acute viral hepatitis. A fewsubjects on oral therapy had transaminase elevations attributed to suspected drug-relatedhepatotoxicity; these changes were reversible upon discontinuation of treatment (see section 4.4).
Elevated lipases were observed during clinical trials with Vocabria plus rilpivirine; Grade 3 and 4lipase increases occurred at a higher incidence with Vocabria plus rilpivirine compared with CAR.
These elevations were generally asymptomatic and did not lead to Vocabria plus rilpivirinediscontinuation. One case of fatal pancreatitis with Grade 4 lipase and confounding factors (includinghistory of pancreatitis) has been reported in study ATLAS-2M, for which causality to the injectionregimen could not be ruled out.
Paediatric populationBased on data from the week 16 (Cohort 1C, n=30) and week 24 analysis (Cohort 2, n=144) of the
MOCHA study (IMPAACT 2017), no new safety concerns were identified in adolescents (aged atleast 12 years and weighing 35 kg or more) when compared with the safety profile established inadults.
Reporting of suspected adverse reactionsReporting suspected adverse reactions after authorisation of the medicinal product is important. Itallows continued monitoring of the benefit/risk balance of the medicinal product. Healthcareprofessionals are asked to report any suspected adverse reactions via the national reporting systemlisted in Appendix V.
4.9 Overdose
There is no specific treatment for Vocabria overdose. If overdose occurs, the patient should be treatedsupportively with appropriate monitoring as necessary.
Cabotegravir is known to be highly protein bound in plasma; therefore, dialysis is unlikely to behelpful in removal of medicinal product from the body. Management of overdose with Vocabriainjection should take into consideration the prolonged exposure to the medicine following an injection.
5. PHARMACOLOGICAL PROPERTIES
5.1 Pharmacodynamic properties
Pharmacotherapeutic group: Antiviral for systemic use, integrase inhibitor, ATC code: J05AJ04.
Mechanism of actionCabotegravir inhibits HIV integrase by binding to the integrase active site and blocking the strandtransfer step of retroviral deoxyribonucleic acid (DNA) integration which is essential for the HIVreplication cycle.
Pharmacodynamic effectsAntiviral activity in cell cultureCabotegravir exhibited antiviral activity against laboratory strains of wild-type HIV-1 with meanconcentration of cabotegravir necessary to reduce viral replication by 50 percent (EC50) values of0.22 nM in peripheral blood mononuclear cells (PBMCs), 0.74 nM in 293T cells and 0.57 nM in MT-4cells. Cabotegravir demonstrated antiviral activity in cell culture against a panel of 24 HIV-1 clinicalisolates (three in each group of M clades A, B, C, D, E, F, and G, and 3 in group O) with EC50 valuesranging from 0.02 nM to 1.06 nM for HIV-1. Cabotegravir EC50 values against three HIV-2 clinicalisolates ranged from 0.10 nM to 0.14 nM. No clinical data is available in patients with HIV-2.
Antiviral Activity in combination with other medicinal products
No medicines with inherent anti-HIV activity were antagonistic to cabotegravir’s antiretroviral activity(in vitro assessments were conducted in combination with rilpivirine, lamivudine, tenofovir andemtricitabine).
Resistance in vitroIsolation from wild-type HIV-1 and activity against resistant strains: Viruses with >10-fold increase incabotegravir EC50 were not observed during the 112-day passage of strain IIIB. The followingintegrase (IN) mutations emerged after passaging wild type HIV-1 (with T124A polymorphism) in thepresence of cabotegravir: Q146L (fold-change [FC] range 1.3-4.6), S153Y (FC range 2.8-8.4), and
I162M (FC = 2.8). As noted above, the detection of T124A is selection of a pre-existing minorityvariant that does not have differential susceptibility to cabotegravir. No amino acid substitutions in theintegrase region were selected when passaging the wild-type HIV-1 NL-432 in the presence of 6.4 nMof cabotegravir through Day 56.
Among the multiple mutants, the highest FC was observed with mutants containing Q148K or Q148R.
E138K/Q148H resulted in a 0.92-fold decrease in susceptibility to cabotegravir but E138K/Q148Rresulted in a 12-fold decrease in susceptibility and E138K/Q148K resulted in an 81-fold decrease insusceptibility to cabotegravir. G140C/Q148R and G140S/Q148R resulted in a 22- and 12-folddecrease in susceptibility to cabotegravir, respectively. While N155H did not alter susceptibility tocabotegravir, N155H/Q148R resulted in a 61-fold decrease in susceptibility to cabotegravir. Othermultiple mutants, which resulted in a FC between 5 and 10, are: T66K/L74M (FC=6.3),
G140S/Q148K (FC=5.6), G140S/Q148H (FC=6.1) and E92Q/N155H (FC=5.3).
Resistance in vivoThe number of subjects who met Confirmed Virologic Failure (CVF) criteria was low across thepooled FLAIR and ATLAS trials. In the pooled analysis, there were 7 CVFs on cabotegravir plusrilpivirine (7/591, 1.2%) and 7 CVFs on current antiretroviral regimen (7/591, 1.2%). The three CVFson cabotegravir plus rilpivirine in FLAIR with resistance data had Subtype A1. In addition, 2 of the 3
CVFs had treatment-emergent integrase inhibitor resistance associated substitution Q148R while oneof the three had G140R with reduced phenotypic susceptibility to cabotegravir. All 3 CVFs carried onerilpivirine resistance-associated substitution: K101E, E138E/A/K/T or E138K, and two of the threeshowed reduced phenotypic susceptibility to rilpivirine. The 3 CVFs in ATLAS had subtype A, A1and AG. One of the three CVFs carried the INI resistance-associated substitution N155H at failurewith reduced cabotegravir phenotype susceptibility. All three CVFs carried one rilpivirine resistance-associated substitution at failure: E138A, E138E/K or E138K, and showed reduced phenotypicsusceptibility to rilpivirine. In two of these three CVFs, the rilpivirine resistance-associatedsubstitutions observed at failure were also observed at baseline in PBMC HIV-1 DNA. The seventh
CVF (FLAIR) never received an injection.
The substitutions associated with resistance to long-acting cabotegravir injection, observed in thepooled ATLAS and FLAIR trials were G140R (n=1), Q148R (n=2), and N155H (n=1).
In the ATLAS-2M study 10 subjects met CVF criteria through Week 48: 8 subjects (1.5%) in the Q8Warm and 2 subjects (0.4%) in the Q4W arm. Eight subjects met CVF criteria at or before the Week 24timepoint.
At Baseline in the Q8W arm, 5 subjects had rilpivirine resistance-associated mutations of Y181Y/C +
H221H/Y, Y188Y/F/H/L, Y188L, E138A or E138E/A and 1 subject contained cabotegravir resistancemutation, G140G/R (in addition to the above Y188Y/F/H/L rilpivirine resistance-associated mutation).
At the suspected virologic failure (SVF) timepoint in the Q8W arm, 6 subjects had rilpivirineresistance-associated mutations with 2 subjects having an addition of K101E and 1 subject having anaddition of E138E/K from Baseline to SVF timepoint. Rilpivirine FC was above the biological cut-offfor 7 subjects and ranged from 2.4 to 15. Five of the 6 subjects with rilpivirine resistance-associatedsubstitution, also had integrase strand transfer inhibitor (INSTI) resistance-associated substitutions,
N155H (n=2); Q148R; Q148Q/R+N155N/H (n=2). INSTI substitution, L74I, was seen in 4/7 subjects.
The Integrase genotype and phenotype assay failed for one subject and cabotegravir phenotype wasunavailable for another. FCs for the Q8W subjects ranged from 0.6 to 9.1 for cabotegravir, 0.8 to 2.2for dolutegravir and 0.8 to 1.7 for bictegravir.
In the Q4W arm, neither subject had any rilpivirine or INSTI resistance-associated substitutions at
Baseline. One subject had the NNRTI substitution, G190Q, in combination with the NNRTIpolymorphism, V189I. At SVF timepoint, one subject had on-treatment rilpivirine resistance-associated mutations, K101E + M230L and the other retained the G190Q + V189I NNRTIsubstitutions with the addition of V179V/I. Both subjects showed reduced phenotypic susceptibility torilpivirine. Both subjects also had INSTI resistance-associated mutations, either Q148R + E138E/K or
N155N/H at SVF and 1 subject had reduced susceptibility to cabotegravir. Neither subject had the
INSTI substitution, L74I. FCs for the Q4W subjects were 1.8 and 4.6 for cabotegravir, 1.0 and 1.4 fordolutegravir and 1.1 and 1.5 for bictegravir.
Clinical efficacy and safetyAdultsThe efficacy of cabotegravir plus rilpivirine has been evaluated in two Phase III randomised,multicentre, active-controlled, parallel-arm, open-label, non-inferiority studies, FLAIR (study 201584)and ATLAS (study 201585). The primary analysis was conducted after all subjects completed their
Week 48 visit or discontinued the study prematurely.
Patients virologically suppressed (on prior dolutegravir based regimen for 20 weeks)
In FLAIR, 629 HIV-1-infected, antiretroviral treatment (ART)-naive subjects received a dolutegravir
INSTI-containing regimen for 20 weeks (either dolutegravir/abacavir/lamivudine or dolutegravir plus2 other nucleoside reverse transcriptase inhibitors if subjects were HLA-B*5701 positive). Subjectswho were virologically suppressed (HIV-1 RNA <50 copies per mL, n=566) were then randomised(1:1) to receive either the cabotegravir plus rilpivirine regimen or remain on the current antiretroviral(CAR) regimen. Subjects randomised to receive the cabotegravir plus rilpivirine regimen, initiatedtreatment with oral lead-in dosing with one 30 mg cabotegravir tablet plus one 25 mg rilpivirine tablet,daily, for at least 4 weeks, followed by treatment with cabotegravir injection (month 1: 600 mginjection, month 2 onwards: 400 mg injection) plus rilpivirine injection (month 1: 900 mg injection,month 2 onwards: 600 mg injection) every month for an additional 44 weeks. This study was extendedto 96 weeks.
Patients virologically suppressed (stable on prior ARV therapy for at least 6 months)
In ATLAS, 616 HIV-1-infected, ART-experienced, virologically-suppressed (for at least 6 months)subjects (HIV-1 RNA <50 copies per mL) were randomised (1:1) and received either the cabotegravirplus rilpivirine regimen or remained on the CAR regimen. Subjects randomised to receive thecabotegravir plus rilpivirine regimen, initiated treatment with oral lead-in dosing with one 30 mgcabotegravir tablet plus one 25 mg rilpivirine tablet, daily for at least 4 weeks, followed by treatmentwith cabotegravir injection (month 1: 600 mg injection, month 2 onwards: 400 mg injection) plusrilpivirine injection (month 1: 900 mg injection, month 2 onwards: 600 mg injection) every month foran additional 44 weeks. In ATLAS, 50%, 17%, and 33% of subjects received an NNRTI, PI, or INI(respectively) as their baseline third treatment medicine class prior to randomisation and this wassimilar between treatment arms.
Pooled data
At baseline, in the pooled analysis, for the cabotegravir plus rilpivirine arm, the median age of subjectswas 38 years, 27% were female, 27% were non-white, 1% were 65 years and 7% had CD4+ cellcount less than 350 cells per mm3; these characteristics were similar between treatment arms.
The primary endpoint of both studies was the proportion of subjects with plasma HIV-1 RNA ≥50copies/mL at week 48 (snapshot algorithm for the ITT-E population).
In a pooled analysis of the two pivotal studies, cabotegravir plus rilpivirine was non-inferior to CARon the proportion of subjects having plasma HIV-1 RNA ≥50 c/mL (1.9% and 1.7% respectively) at
Week 48. The adjusted treatment difference between cabotegravir plus rilpivirine and CAR (0.2; 95%
CI: -1.4, 1.7) for the pooled analysis met the non-inferiority criterion (upper bound of the 95% CIbelow 4%).
The primary endpoint and other week 48 outcomes, including outcomes by key baseline factors, for
FLAIR and ATLAS are shown in Tables 8 and 9.
Table 8 Virologic outcomes of randomised treatment of FLAIR and ATLAS at 48 Weeks(Snapshot analysis)
FLAIR ATLAS Pooled Data
Cabotegravir CAR Cabotegravir CAR Cabotegravir CAR+ RPV N=283 + RPV N=308 +RPV N=591
N=283 N=308 N=591
HIV-1 RNA≥506 (2.1) 7 (2.5) 5 (1.6) 3 (1.0) 11 (1.9) 10 (1.7)copies/mL† (%)
TreatmentDifference % -0.4 (-2.8,2.1) 0.7 (-1.2, 2.5) 0.2 (-1.4, 1.7)(95% CI)*
HIV-1 RNA <50 265 (93.6) 264 (93.3) 285 (92.5) 294 (95.5) 550 (93.1) 558 (94.4)copies/mL (%)
Treatment 0.4 (-3.7, 4.5) -3.0 (-6.7, 0.7) -1.4 (-4.1, 1.4)
Difference %(95% CI)*
No virologic dataat Week 48 12 (4.2) 12 (4.2) 18 (5.8) 11 (3.6) 30 (5.1) 23 (3.9)window (%)
Reasons
Discontinuedstudy/study drug8 (2.8) 2 (0.7) 11 (3.6) 5 (1.6) 19 (3.2) 7 (1.2)due to adverseevent or death (%)
Discontinuedstudy/study drug4 (1.4) 10 (3.5) 7 (2.3) 6 (1.9) 11 (1.9) 16 (2.7)for other reasons(%)
Missing dataduring window 0 0 0 0 0 0but on study (%)
* Adjusted for baseline stratification factors.
† Includes subjects who discontinued for lack of efficacy, discontinued while not supressed.
N = Number of subjects in each treatment group, CI = confidence interval, CAR = current antiviral regimen.
Table 9 Proportion of subjects with plasma HIV-1 RNA ≥50 copies/mL at Week 48 forkey baseline factors (Snapshot Outcomes).
Pooled Data from FLAIR and ATLAS
Cabotegravir+RPV CAR
Baseline factors
N=591 N=591n/N (%) n/N (%)
Baseline CD4+ <350 0/42 2/54 (3.7)(cells/ mm3) 350 to <500 5/120 (4.2) 0/117500 6/429 (1.4) 8/420 (1.9)
Gender Male 6/429 (1.4) 9/423 (2.1)
Female 5/162 (3.1) 1/168 (0.6)
Race White 9/430 (2.1) 7/408 (1.7)
Black2/109 (1.8) 3/133 (2.3)
African/American
Asian/Other 0/52 0/48
BMI <30 kg/m2 6/491 (1.2) 8/488 (1.6)≥30 kg/m2 5/100 (5.0) 2/103 (1.9)
Age (years) <50 9/492 (1.8) 8/466 (1.7)50 2/99 (2.0) 2/125 (1.6)
Baseline PI 1/51 (2.0) 0/54antiviral INI 6/385 (1.6) 9/382 (2.4)therapy atrandomisation NNRTIs 4/155 (2.6) 1/155 (0.6)
BMI= body mass index
PI= Protease inhibitor
INI= Integrase inhibitor
NNRTI= non-nucleoside reverse transcriptase inhibitor
In the FLAIR and ATLAS studies, treatment differences across baseline characteristics (CD4+ count,gender, race, BMI, age, baseline third medicine treatment class) were comparable.
Week 96 FLAIR
In the FLAIR study at 96 Weeks, the results remained consistent with the results at 48 Weeks. Theproportion of subjects having plasma HIV-1 RNA ≥50 c/mL in cabotegravir plus rilpivirine (n=283)and CAR (n=283) was 3.2% and 3.2% respectively (adjusted treatment difference betweencabotegravir plus rilpivirine and CAR [0.0; 95% CI: -2.9, 2.9]). The proportion of subjects havingplasma HIV-1 RNA <50 c/mL in cabotegravir plus rilpivirine and CAR was 87% and 89%,respectively (adjusted treatment difference between cabotegravir plus rilpivirine and CAR[-2.8; 95% CI: -8.2, 2.5]).
Week 124 FLAIR Direct to Injection vs Oral Lead-in.
In the FLAIR study, an evaluation of safety and efficacy was performed at Week 124 for patientselecting to switch (at Week 100) from abacavir/dolutegravir/lamivudine to cabotegravir plus rilpivirinein the Extension Phase. Subjects were given the option to switch with or without an oral lead-in phase,creating an oral lead-in (OLI) group (n=121) and a direct to injection (DTI) group (n=111).
At Week 124, the proportion of subjects with HIV-1 RNA ≥50 copies/mL was 0.8% and 0.9% for theoral lead-in and direct to injection groups, respectively. The rates of virologic suppression (HIV-1
RNA <50 c/mL) were similar in both OLI (93.4%) and DTI (99.1%) groups.
Every 2 month dosing
Patients virologically suppressed (stable on prior ARV therapy for at least 6 months)
The efficacy and safety of cabotegravir injection given every 2 months, has been evaluated in one
Phase IIIb randomised, multicentre, parallel-arm, open-label, non-inferiority study, ATLAS-2M(207966). The primary analysis was conducted after all subjects completed their Week 48 visit ordiscontinued the study prematurely.
In ATLAS-2M, 1045 HIV-1 infected, ART experienced, virologically suppressed subjects wererandomised (1:1) and received a cabotegravir plus rilpivirine injection regimen administered eitherevery 2 months or monthly. Subjects initially on non-cabotegravir/rilpivirine treatment received orallead-in treatment comprising one 30 mg cabotegravir tablet plus one 25 mg rilpivirine tablet, daily, forat least 4 weeks. Subjects randomised to monthly cabotegravir injections (month 1: 600 mg injection,month 2 onwards: 400 mg injection) and rilpivirine injections (month 1: 900 mg injection, month 2onwards: 600 mg injection) received treatment for an additional 44 weeks. Subjects randomised toevery 2 month cabotegravir injections (600 mg injection at months 1, 2, 4 and every 2 monthsthereafter) and rilpivirine injections (900 mg injection at months 1, 2, 4 and every 2 months thereafter)received treatment for an additional 44 weeks. Prior to randomisation, 63%, 13% and 24% of subjectsreceived cabotegravir plus rilpivirine for 0 weeks, 1 to 24 weeks and >24 weeks, respectively.
At baseline, the median age of subjects was 42 years, 27% were female, 27% were non-white, 4%were 65 years and 6% had a CD4+ cell count less than 350 cells per mm3; these characteristics weresimilar between the treatment arms.
The primary endpoint in ATLAS-2M was the proportion of subjects with a plasma HIV-1 RNA50 c/mL at Week 48 (snapshot algorithm for the ITT-E population).
In ATLAS-2M, cabotegravir and rilpivirine administered every 2 months was non-inferior tocabotegravir and rilpivirine administered every month on the proportion of subjects having plasma
HIV-1 RNA ≥50 c/mL (1.7% and 1.0% respectively) at Week 48. The adjusted treatment differencebetween cabotegravir and rilpivirine administered every 2 months and every month (0.8; 95% CI: -0.6,2.2) met the non-inferiority criterion (upper bound of the 95% CI below 4%).
Table 10 Virologic outcomes of randomised treatment of ATLAS-2M at 48 Weeks(Snapshot analysis)2 month Dosing (Q8W) Monthly Dosing (Q4W)
N=522 (%) N=523 (%)
HIV-1 RNA≥50 copies/mL† (%) 9 (1.7) 5 (1.0)
Treatment Difference % (95% 0.8 (-0.6, 2.2)
CI)*
HIV-1 RNA <50 copies/mL (%) 492 (94.3) 489 (93.5)
Treatment Difference % (95% CI)* 0.8 (-2.1, 3.7)
No virologic data at week 48 21 (4.0) 29 (5.5)window
Reasons:
Discontinued study due to AE or 9 (1.7) 13 (2.5)death (%)
Discontinued study for other 12 (2.3) 16 (3.1)reasons (%)
On study but missing data in 0 0window (%)
* Adjusted for baseline stratification factors.
† Includes subjects who discontinued for lack of efficacy, discontinued while not suppressed.
N = Number of subjects in each treatment group, CI = confidence interval, CAR = current antiviral regimen.
Table 11 Proportion of subjects with Plasma HIV-1 RNA ≥50 copies/mL at Week 48 forkey baseline factors (Snapshot Outcomes).
Baseline factors Number of HIV-1 RNA ≥50 c/mL/Total
Assessed (%)2 Month Dosing Monthly dosing(Q8W) (Q4W)
Baseline CD4+ cell <350 1/ 35 (2.9) 1/ 27 (3.7)count (cells/mm3)350 to <500 1/ 96 (1.0) 0/ 89≥500 7/391 (1.8) 4/407 (1.0)
Gender Male 4/385 (1.0) 5/380 (1.3)
Female 5/137 (3.5) 0/143
Race White 5/370 (1.4) 5/393 (1.3)
Non-White 4/152 (2.6) 0/130
Black/African 4/101 (4.0) 0/ 90
American
Baseline factors Number of HIV-1 RNA ≥50 c/mL/Total
Assessed (%)2 Month Dosing Monthly dosing(Q8W) (Q4W)
Non- 5/421 (1.2) 5/421 (1.2)
Black/African
American
BMI <30 kg/m2 3/409 (0.7) 3/425 (0.7)≥30 kg/m2 6/113 (5.3) 2/98 (2.0)
Age (years) <35 4/137 (2.9) 1/145 (0.7)35 to <50 3/242 (1.2) 2/239 (0.8)50 2/143 (1.4) 2/139 (1.4)
Prior exposure None 5/327 (1.5) 5/327 (1.5)
CAB/RPV1-24 weeks 3/69 (4.3) 0/68>24 weeks 1/126 (0.8) 0/128
BMI= body mass index
In the ATLAS-2M study, treatment differences on the primary endpoint across baseline characteristics(CD4+ lymphocyte count, gender, race, BMI, age and prior exposure to cabotegravir/rilpivirine) werenot clinically meaningful.
The efficacy results at Week 96 are consistent with the results of the primary endpoint at Week 48.
Cabotegravir plus rilpivirine injections administered every 2 months is non-inferior to cabotegravirand rilpivirine administered every month. The proportion of subjects having plasma HIV-1 RNA ≥50c/mL at Week 96 in cabotegravir plus rilpivirine every 2 months dosing (n=522) and cabotegravir plusrilpivirine monthly dosing (n=523) was 2.1% and 1.1% respectively (adjusted treatment differencebetween cabotegravir plus rilpivirine every 2 months dosing and monthly dosing [1.0; 95% CI: -0.6,2.5]). The proportion of subjects having plasma HIV-1 RNA <50 c/mL at Week 96 in cabotegravirplus rilpivirine every 2 months dosing and cabotegravir plus rilpivirine monthly dosing was 91% and90.2% respectively (adjusted treatment difference between cabotegravir plus rilpivirine every 2 monthsdosing and monthly dosing [0.8; 95% CI: -2.8, pct. 4.3]).
The efficacy results at Week 152 are consistent with the results of the primary endpoint at Week 48and at Week 96. Cabotegravir plus rilpivirine injections administered every 2 months is non-inferior tocabotegravir and rilpivirine administered every month. In an ITT analysis, the proportion of subjectshaving plasma HIV-1 RNA ≥50 c/mL at Week 152 in cabotegravir plus rilpivirine every 2 monthsdosing (n=522) and cabotegravir plus rilpivirine monthly dosing (n=523) was 2.7% and 1.0%respectively (adjusted treatment difference between cabotegravir plus rilpivirine every 2 monthsdosing and monthly dosing [1.7; 95% CI: 0.1, 3.3]). In an ITT analysis, the proportion of subjectshaving plasma HIV-1 RNA <50 c/mL at Week 152 in cabotegravir plus rilpivirine every 2 monthsdosing and cabotegravir plus rilpivirine monthly dosing was 87% and 86% respectively (adjustedtreatment difference between cabotegravir plus rilpivirine every 2 months dosing and monthly dosing[1.5; 95% CI: -2.6, 5.6]).
Post-hoc analyses
Multivariable analyses of pooled phase 3 studies (ATLAS through 96 weeks, FLAIR through 124weeks and ATLAS-2M through 152 weeks) examined the influence of various factors on the risk of
CVF. The baseline factors analysis (BFA) examined baseline viral and participant characteristics anddosing regimen; and the multivariable analysis (MVA) included the baseline factors and incorporatedpost-baseline predicted plasma drug concentrations on CVF using regression modelling with a variableselection procedure. Following a total of 4291 person-years, the unadjusted CVF incidence rate was0.54 per 100 person-years; 23 CVFs were reported (1.4% of 1651 individuals in these studies).
The BFA demonstrated rilpivirine resistance mutations (incidence rate ratio IRR=21.65, p<0.0001),
HIV-1 subtype A6/A1 (IRR=12.87, p<0.0001), and body mass index (IRR=1.09 per 1 unit increase,p=0.04; IRR=3.97 of ≥30 kg/m2, p=0.01) were associated with CVF. Other variables including Q4Wor Q8W dosing, female gender, or CAB/INSTI resistance mutations had no significant associationwith CVF. A combination of at least 2 of the following key baseline factors was associated with anincreased risk of CVF: rilpivirine resistance mutations, HIV-1 subtype A6/A1, or BMI30 kg/m2 (see
Table 12).
Table 12 Virologic outcomes by presence of key baseline factors of rilpivirine resistancemutations, Subtype A6/A11 and BMI ≥30 kg/m2
Baseline Factors (number) Virologic Successes (%)2 Confirmed Virologic Failure(%)30 844/970 (87.0) 4/970 (0.4)1 343/404 (84.9) 8/404 (2.0)42 44/57 (77.2) 11/57 (19.3)5
TOTAL 1231/1431 (86.0) 23/1431 (1.6)6(95% Confidence Interval) (84.1%, 87.8%) (1.0%, 2.4%)1 HIV-1 subtype A1 or A6 classification based on Los Alamos National Library panel from HIV Sequencedatabase (June 2020)2 Based on the FDA Snapshot algorithm of RNA <50 copies/mL at Week 48 for ATLAS, at Week 124 for
FLAIR, at Week 152 for ATLAS-2M.3 Defined as two consecutive measurements of HIV RNA ≥200 copies/mL.4 Positive Predictive Value (PPV) <2%; Negative Predictive Value (NPV) 98.5%; sensitivity 34.8%; specificity71.9%5 PPV 19.3%; NPV 99.1%; sensitivity 47.8%; specificity 96.7%6 Analysis dataset with all non-missing covariates for baseline factors (out of a total of 1651 individuals)
In patients with at least two of these risk factors, the proportion of subjects who had a CVF was higherthan observed in patients with none or one risk factor, with CVF identified in 6/24 patients [25.0%,95%CI (9.8%, 46.7%)] treated with the every 2 months dosing regimen and 5/33 patients [15.2%,95%CI (5.1%, 31.9%)] treated with the monthly dosing regimen.
Oral bridging with other ART
In a retrospective analysis of pooled data from 3 clinical studies (FLAIR, ATLAS-2M, and LATTE-2/study 200056), 29 subjects were included who received oral bridging for a median duration of 59days (25th and 75th percentile 53-135) with ART other than cabotegravir plus rilpivirine (alternativeoral bridging) during treatment with cabotegravir plus rilpivirine long-acting (LA) intramuscular (IM)injections. The median age of subjects was 32 years, 14% were female, 31% were non-white, 97%received an integrase inhibitor (INI)-based regimen for alternative oral bridging, 41% received an
NNRTI as part of their alternative oral bridging regimen (including rilpivirine in 11/12 cases), and62% received an NRTI. Three subjects withdrew during oral bridging or shortly following oralbridging for non-safety reasons. The majority (≥96%) of subjects maintained virologic suppression(plasma HIV-1 RNA <50 c/mL). During bridging with alternative oral bridging and during the periodfollowing alternative oral bridging (up to 2 cabotegravir plus rilpivirine injections following oralbridging), no cases of CVF (plasma HIV-1 RNA ≥200 c/mL) were observed.
Paediatric populationThe safety, tolerability and pharmacokinetics (PK) of long-acting injectable cabotegravir incombination with long acting rilpivirine in adolescents has been evaluated in an ongoing Phase I/IImulticentre, open-label, non-comparative study, MOCHA (IMPAACT 2017).
In Cohort 2 of this study, 144 virologically suppressed adolescents discontinued their pre-study cARTregimen and received cabotegravir 30 mg tablet and rilpivirine 25 mg tablet once daily for at least 4weeks followed by every 2 month cabotegravir intramuscular injections (months 1 and 2: 600 mg, andthen 600 mg every 2 months) and rilpivirine intramuscular injections (months 1 and 2: 900 mg, andthen 900 mg every 2 months).
At baseline the median age of participants was 15.0 years, the median weight was 48.5 kg (range: 35.2,100.9), the median BMI was 19.5 kg/m2 (range: 16.0, 34.3), 51.4 % were female, 98.6 % were non-white, and 4 participants had a CD4+ cell count less than 350 cells per mm3.
Antiviral activity was assessed as a secondary objective, with 139 of the 144 participants (96.5 %)(snapshot algorithm) remaining virologically suppressed (plasma HIV-1 RNA value <50 c/mL) at
Week 24.
The European Medicines Agency has deferred the obligation to submit the results of studies withcabotegravir film-coated tablets and prolonged-release suspension for injection in one or more subsetsof the paediatric population in the treatment of HIV-1 infection. See section 4.2 for information onpaediatric use.
5.2 Pharmacokinetic properties
AdultsCabotegravir pharmacokinetics is similar between healthy and HIV-infected subjects. The PKvariability of cabotegravir is moderate to high. In HIV-infected subjects participating in Phase IIIstudies, between-subject CVb% for Ctau ranged from 39 to 48%. Higher between-subject variabilityranging from 41% to 89% was observed with single dose administration of long-acting cabotegravirinjection.
Table 13 Pharmacokinetic parameters following cabotegravir orally once daily, andinitiation, monthly and every 2 month continuation intramuscular injections in
Adult participants
Geometric Mean (5th, 95th Percentile)a
Dosage AUC b(0-tau) Cmax Ctau
Dosing Phase Regimen (µg*h/mL) (µg/mL) (µg/mL)c 30 mg 145 8.0 4.6
Oral lead-inonce daily (93.5, 224) (5.3, 11.9) (2.8, 7.5)
Initial 600 mg IM 1591 8.0 1.5injectiond Initial Dose (714, 3 245) (5.3, 11.9) (0.65, 2.9)
Monthly 400 mg IM 2415 4.2 2.8injectione monthly (1 494, 3 645) (2.5, 6.5) (1.7, pct. 4.6)
Every 2- 4.0 1.6600 mg IM 3764month (2.3, 6.8) (0.8, 3.0)e Every 2-month (2 431, 5 857)injectiona Pharmacokinetic (PK) parameter values were based on individual post-hoc estimates from population PKmodels for patients in FLAIR and ATLAS for the monthly regimen and in ATLAS-2M for the every 2 monthregimen.b tau is dosing interval: 24 hours for oral administration; 1 month for monthly and 2 months for every 2 month
IM injections of extended-release injectable suspension.c Oral lead-in pharmacokinetic parameter values represent steady-state.d Initial injection Cmax values primarily reflect oral dosing because the initial injection was administered on thesame day as the last oral dose; however, the AUC(0-tau) and Ctau values reflect the initial injection. Whenadministered without OLI (DTI n=110), observed geometric mean (5th, 95th percentile) CAB Cmax (1 week postinitial injection) was 1.89 g/mL (0.438, 5.69) and CAB Ctau was 1.43 g/mL (0.403, 3.90).e Monthly and every 2 month injection pharmacokinetic parameter values represent Week◦48 data.
AbsorptionCabotegravir injection exhibits absorption-limited (flip-flop) kinetics resulting from slow absorptionfrom the gluteal muscle into the systemic circulation resulting in sustained plasma concentrations.
Following a single intramuscular dose, plasma cabotegravir concentrations are detectable on the firstday and gradually rise to reach maximum plasma concentration with a median Tmax of 7 days.
Cabotegravir has been detected in plasma up to 52 weeks or longer after administration of a singleinjection. Pharmacokinetic steady-state is achieved by 44 weeks.
Plasma cabotegravir exposure increases in proportion or slightly less than in proportion to dosefollowing single and repeat IM injection of doses ranging from 100 to 800 mg.
DistributionCabotegravir is highly bound (>99%) to human plasma proteins, based on in vitro data. Followingadministration of oral tablets, the mean apparent oral volume of distribution (Vz/F) in plasma was12.3 L. In humans, the estimate of plasma cabotegravir Vc/F was 5.27 L and Vp/F was 2.43 L. Thesevolume estimates, along with the assumption of high bioavailability, suggest some distribution ofcabotegravir to the extracellular space.
Cabotegravir is present in the female and male genital tract. Median cervical and vaginal tissue:plasmaratios ranged from 0.16 to 0.28 and median rectal tissue:plasma ratios were 0.08 following a single400 mg intramuscular injection (IM) at 4, 8, and 12 weeks after dosing.
Cabotegravir is present in cerebrospinal fluid (CSF). In HIV-infected subjects receiving a regimen ofcabotegravir injection plus rilpivirine injection, the cabotegravir CSF to plasma concentration ratio[median (range)] (n=16) was 0.003(range: 0.002 to 0.004) one week following a steady-state longacting cabotegravir (Q4W or Q8W) injection. Consistent with therapeutic cabotegravir concentrationsin the CSF, CSF HIV-1 RNA (n=16) was <50 c/mL in 100% and <2 c/mL in 15/16 (94%) of subjects.
At the same time point, plasma HIV-1 RNA (n=18) was <50 c/mL in 100% and <2 c/mL in 12/18(66.7%) of subjects.
In vitro, cabotegravir was not a substrate of organic anion transporting polypeptide (OATP) 1B1,
OATP2B1, OATP1B3 or organic cation transporter (OCT1).
BiotransformationCabotegravir is primarily metabolised by UGT1A1 with a minor UGT1A9 component. Cabotegravir isthe predominant circulating compound in plasma, representing > 90% of plasma total radiocarbon.
Following oral administration in humans, cabotegravir is primarily eliminated through metabolism;renal elimination of unchanged cabotegravir is low (<1% of the dose). Forty-seven percent of the totaloral dose is excreted as unchanged cabotegravir in the faeces. It is unknown if all or part of this is dueto unabsorbed drug or biliary excretion of the glucuronide conjugate, which can be further degraded toform the parent compound in the gut lumen. Cabotegravir was observed to be present in duodenal bilesamples. The glucuronide metabolite was also present in some, but not all, of the duodenal bilesamples. Twenty-seven percent of the total oral dose is excreted in the urine, primarily as aglucuronide metabolite (75% of urine radioactivity, 20% of total dose).
Cabotegravir is not a clinically relevant inhibitor of the following enzymes and transporters: CYP1A2,
CYP2A6, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, CYP3A4, UGT1A1, UGT1A3,
UGT1A4, UGT1A6, UGT1A9, UGT2B4, UGT2B7, UGT2B15, and UGT2B17, P-gp, BCRP, Bile saltexport pump (BSEP), OCT1, OCT2, OATP1B1, OATP1B3, multidrug and toxin extrusion transporter(MATE) 1, MATE 2-K, multidrug resistance protein (MRP) 2 or MRP4.
EliminationCabotegravir mean apparent terminal phase half-life is absorption-rate limited and is estimated to be5.6 to 11.5 weeks after a single dose IM injection. The significantly longer apparent half-life comparedto oral reflects elimination from the injection site into the systemic circulation. The apparent CL/F was0.151 L/h.
Linearity/non-linearityPlasma CAB exposure increases in proportion or slightly less than in proportion to dose followingsingle and repeat IM injection of doses ranging from 100 to 800 mg.
Polymorphisms
In a meta-analysis of healthy and HIV-infected subject trials, HIV-infected subjects with UGT1A1genotypes conferring poor cabotegravir metabolism had a 1.2-fold mean increase in steady-statecabotegravir AUC, Cmax, and Ctau following long acting injection administration compared withsubjects with genotypes associated with normal metabolism via UGT1A1. These differences are notconsidered clinically relevant. No dose adjustment is required in subjects with UGT1A1polymorphisms.
Special patient populationsGenderPopulation pharmacokinetic analyses revealed no clinically relevant effect of gender on the exposureof cabotegravir, therefore no dose adjustment is required on the basis of gender.
RacePopulation pharmacokinetic analyses revealed no clinically relevant effect of race on the exposure ofcabotegravir, therefore no dosage adjustment is required on the basis of race.
Body Mass Index (BMI)
Population pharmacokinetic analyses revealed no clinically relevant effect of BMI on the exposure ofcabotegravir, therefore no dose adjustment is required on the basis of BMI.
ElderlyPopulation pharmacokinetic analysis of cabotegravir revealed no clinically relevant effect of age oncabotegravir exposure. Pharmacokinetic data for cabotegravir in subjects of >65 years old are limited.
Renal impairmentNo clinically important pharmacokinetic differences between subjects with severe renal impairment(creatinine clearance ≥15 to <30 mL/min and not on dialysis) and matching healthy subjects wereobserved. No dosage adjustment is necessary for patients with mild, moderate or severe renalimpairment (not on dialysis). Cabotegravir has not been studied in patients on dialysis.
Hepatic impairmentNo clinically important pharmacokinetic differences between subjects with moderate hepaticimpairment and matching healthy subjects were observed. No dosage adjustment is necessary forpatients with mild to moderate hepatic impairment (Child-Pugh Score A or B). The effect of severehepatic impairment (Child-Pugh Score C) on the pharmacokinetics of cabotegravir has not beenstudied.
Paediatric populationPopulation pharmacokinetic simulations revealed no clinically relevant differences in exposurebetween adolescent (at least 12 years of age and weighing 35 kg or more) participants and HIV-1infected and uninfected adult participants from the cabotegravir development programme, therefore,no dosage adjustment is needed for adolescents weighing ≥ 35 kg.
Table 14 Pharmacokinetic parameters following cabotegravir orally once daily, andinitiation, monthly, and every 2 month continuation intramuscular injections in
Adolescent participants Aged 12 to less than 18 years (≥35 kg)
Geometric Mean (5th, 95th Percentile)a
Dosage AUC b(0-tau) Cmax Ctau
Dosing Phase Regimen (µg*h/mL) (µg/mL) (µg/mL)c 30 mg
Oral lead-in 203 (136, 320) 11 (7.4, 16.6) 6.4 (4.2, 10.5)once daily
Initial 600 mg IM 2085 (1056,d 11 (7.4, 16.6) 1.9 (0.80, 3.7)injection Initial Dose 4259)
Every 1-400 mg IM 3416 (2303,month 5.7 (3.8, 8.9) 4.2 (2.7, 6.5)
Every 1-month 5109)injectione
Every 2-600 mg IM 5184 (3511,month 5.1 (3.1, 8.2) 2.5 (1.3, 4.2)e Every 2-month 7677)injectiona Pharmacokinetic (PK) parameter values were based on individual post-hoc estimates from population PKmodels in both a HIV-1 infected adolescent population (n=147) weighing 35.2-98.5 kg and a HIV-1 uninfectedadolescent population (n=62) weighing 39.9-167 kg.b tau is dosing interval: 24 hours for oral administration; 1 month for the initial injection and monthly IMinjections and 2 months for every 2 months for IM injections of extended-release injectable suspension.c Oral lead-in pharmacokinetic parameter values represent steady-state.d Initial injection Cmax values primarily reflect oral dosing because the initial injection was administered on thesame day as the last oral dose; however, the AUC(0-tau) and Ctau values reflect the initial injection.e Pharmacokinetic parameter values represent steady state.
5.3 Preclinical safety data
Carcinogenesis and mutagenesis
Cabotegravir was not mutagenic or clastogenic using in vitro tests in bacteria and cultured mammaliancells, and an in vivo rodent micronucleus assay. Cabotegravir was not carcinogenic in long termstudies in the mouse and rat.
Reproductive toxicology studies
No effect on male or female fertility was observed in rats treated with cabotegravir at oral doses up to1,000 mg/kg/day (>20 times the exposure in humans at the maximum recommended dose).
In an embryo-foetal development study there were no adverse developmental outcomes following oraladministration of cabotegravir to pregnant rabbits up to a maternal toxic dose of 2,000 mg/kg/day(0.66 times the exposure in humans at the MRHD) or to pregnant rats at doses up to 1,000 mg/kg/day(>30 times the exposure in humans at the MRHD). In rats, alterations in foetal growth (decreased bodyweights) were observed at 1,000 mg/kg/day. Studies in pregnant rats showed that cabotegravir crossesthe placenta and can be detected in foetal tissue.
In rat pre- and post-natal (PPN) studies cabotegravir reproducibly induced a delayed onset ofparturition, and an increase in the number of stillbirths and neonatal mortalities at 1,000 mg/kg/day(>30 times the exposure in humans at the MRHD). A lower dose of 5 mg/kg/day (approximately 10times the exposure in humans at the MRHD) cabotegravir was not associated with delayed parturitionor neonatal mortality. In rabbit and rat studies there was no effect on survival when foetuses weredelivered by caesarean section. Given the exposure ratio, the relevance to humans is unknown.
Repeated dose toxicityThe effect of prolonged daily treatment with high doses of cabotegravir has been evaluated in repeatoral dose toxicity studies in rats (26 weeks) and in monkeys (39 weeks). There were no drug-relatedadverse effects in rats or monkeys given cabotegravir orally at doses up to 1,000 mg/kg/day or500 mg/kg/day, respectively.
In a 14 day and 28 day monkey toxicity study, gastro-intestinal (GI) effects (body weight loss, emesis,loose/watery faeces, and moderate to severe dehydration) were observed and were the result of localdrug administration and not systemic toxicity.
In a 3 month study in rats, when cabotegravir was administered by monthly sub-cutaneous (SC)injection (up to 100 mg/kg/dose); monthly IM injection (up to 75 mg/kg/dose) or weekly SC injection(100 mg/kg/dose), there were no adverse effects noted and no new target organ toxicities (at exposures>30 times the exposure in humans at the MRHD of 400 mg IM dose).
6. PHARMACEUTICAL PARTICULARS
6.1 List of excipients
Mannitol (E421)
Polysorbate 20 (E432)
Macrogol (E1521)
Water for injections
6.2 Incompatibilities
In the absence of compatibility studies, this medicinal product must not be mixed with other medicinalproducts.
6.3 Shelf life
Unopened vial3 years
Shelf life of suspension in syringe
Chemical and physical in-use stability has been demonstrated for 2 hours at 25°C.
Once the suspension has been drawn into the syringe, from a microbiological point of view, theproduct should be used immediately. If not used immediately, in-use storage times and conditionsprior to use are the responsibility of the user.
6.4 Special precautions for storage
Unopened vialThis medicinal product does not require any special storage conditions.
Do not freeze.
Suspension in syringe
For storage conditions after first opening of the product, see section 6.3.
6.5 Nature and contents of container
400 mg (2 mL vial)
Brown 2 mL type I glass vial, with bromobutyl rubber stopper and a grey aluminium overseal with adark grey plastic flip-cap.
Each pack contains: 1 vial (400 mg), 1 graduated syringe (sterile, single use with volumetric markingsevery 0.2 mL), 1 vial adaptor and 1 injection needle (0.65 mm, 38 mm [23 gauge, 1½ inch]).
600 mg (3mL vial)
Brown 3 mL type I glass vial, with bromobutyl rubber stopper and a grey aluminium overseal with anorange plastic flip-cap.
Each pack contains: 1 vial (600 mg), 1 graduated syringe (sterile, single use with volumetric markingsevery 0.2 mL), 1 vial adaptor and 1 injection needle (0.65 mm, 38 mm [23 gauge, 1½ inch]).
6.6 Special precautions for disposal and other handling
Any unused medicinal product or waste material should be disposed of in accordance with localrequirements.
Full instructions for use and handling of Vocabria injection are provided in the package leaflet (see
Instructions for Use).
7. MARKETING AUTHORISATION HOLDER
ViiV Healthcare BV
Van Asch van Wijckstraat 55H,3811 LP Amersfoort
Netherlands
8. MARKETING AUTHORISATION NUMBER(S)
EU/1/20/1481/002
EU/1/20/1481/003
9. DATE OF FIRST AUTHORISATION/RENEWAL OF THE AUTHORISATION
Date of first authorisation: 17 December 2020
10. DATE OF REVISION OF THE TEXT
Detailed information on this medicinal product is available on the website of the European Medicines
Agency https://www.ema.europa.eu.