Severe hepatotoxicity during treatment with capmatinib.

Introduction: Capmatinib is a mesenchymal-epithelial transition (MET) inhibitor authorized for metastatic non-small cell lung cancer (NSCLC) with MET exon 14 skipping mutation treatment in adult patients.

Case Report: We report a case of an elderly female with a diagnosis of metastatic NSCLC with MET exon 14 skipping mutation who developed a severe hepatotoxicity after 7 weeks under treatment with capmatinib.

Management & Outcome: Capmatinib was immediately discontinued. Hepatotoxicity is included as "warning and precautions" in the product information sheet. The patient was admitted with severe acute hepatitis, secondary hypocoagulability and acute deterioration of renal function. She experienced a rapid worsening with a fatal outcome three days after admission. The causal relationship between capmatinib and the appearance of hepatotoxicity was determined as probable according to Naranjo's modified Karch and Lasagna's imputability algorithm.

Discussion: The recognition and diagnosis of drug-induced liver injury (DILI) are often difficult and delayed. Molecularly targeted agents require careful assessment of liver function both prior to and during therapy. Capmatinib hepatotoxicity is an infrequent but severe adverse drug reaction (ADR). Prescribing information includes recommendations about liver function monitoring. The main approachment for DILI is the removal of the causative agent. Detection and communication of ADRs to the Pharmacovigilance Systems have special relevance for novel drugs, with little data in real life setting.