Indicated for: cancer
Route of administration: oral
Substance: larotrectinib (antineoplastic agent)
ATC: L01EX12 (Antineoplastic and immunomodulating agents | Protein kinase inhibitors | Other protein kinase inhibitors)
This medicine may affect fertility.
Dose adjustment may be needed in liver disease.
Handle with special care.
Effective contraception is required during treatment.
Do not use this medicine while breastfeeding.
Do not use this medicine during pregnancy.
This medicine may affect the liver.
This medicine may have important interactions with other medicines.
This medicine may lower blood cell counts.
This medicine is subject to additional monitoring.
Periodic laboratory tests may be required during treatment.
Stop taking the medicine and seek urgent medical help if a severe rash occurs.
Larotrectinib is an anticancer medicine used in adults and children with solid tumours that have an NTRK gene fusion. It may be used when the tumour is advanced, metastatic, or cannot be removed by surgery without major harm, and when there are no satisfactory alternative treatments.
The medicine blocks TRK proteins produced by the NTRK fusion. These proteins can send signals that allow cancer cells to keep growing. For this reason, molecular testing of the tumour is required before treatment. The genetic change is more important than the original body site of the cancer.
Larotrectinib is taken by mouth, as capsules or oral solution, usually twice daily as prescribed. Treatment is continued while it is working and tolerated. Regular check-ups are needed, including liver blood tests and assessment of neurological, digestive and general symptoms.
Possible side effects include tiredness, dizziness, nausea, vomiting, constipation, diarrhoea, anaemia and increased liver enzymes. Avoid driving if you feel dizzy or sleepy. Contact your doctor if you notice yellowing of the skin, dark urine, confusion, tingling, fever or symptoms that worsen quickly.