Indications for Crizotinib

Indications for Crizotinib

Crizotinib is a prescription medication used to treat non-small cell lung cancer (NSCLC) caused by defects in the anaplastic lymphoma kinase (ALK) gene or the ROS1 gene, and that has spread to other parts of the body. Depending on the abnormal gene, this type of lung cancer is called ALK-positive or ROS1-positive. In 2011, Crizotinib became the first drug for patients with ALK-positive metastatic NSCLC; today, it is also indicated for ROS1-positive patients. It is not known whether Crizotinib is safe and effective in pediatric patients.

Mechanism of Action of Crizotinib

There are many types of lung cancer, and not all types are treated with the same medication. Crizotinib specifically targets non-small cell lung cancer driven by defects in the ALK or ROS1 genes. These genetic defects cause cancer cells to grow and spread abnormally. Crizotinib works by inhibiting the activity of these abnormal kinases, thereby blocking cancer cell signaling pathways and controlling tumor growth. In clinical studies, for most patients with ALK-positive or ROS1-positive metastatic NSCLC, Crizotinib was able to shrink tumors or slow their growth for a period of time. It is important to understand that Crizotinib does not make the cancer completely disappear, but it can provide patients with valuable periods of disease stability.

Precautions Before Taking Crizotinib

Before starting Crizotinib, patients must fully discuss their entire health status and medication use with their healthcare provider. It is especially important to inform about: any liver or kidney problems, lung disease, heart problems (such as long QT syndrome), vision or eye disorders, and whether you are pregnant, plan to become pregnant, or are breastfeeding. Because Crizotinib may cause harm to a fetus, women of childbearing potential must use effective contraception during treatment and for 45 days after the last dose; male patients with female partners of childbearing potential should use condoms during treatment and for 90 days after the last dose. Additionally, tell your doctor about all medications you are taking, including prescription drugs, over-the-counter medicines, vitamins, and herbal supplements, to avoid potential drug interactions.