Which generation of targeted drug is Larotrectinib?

Larotrectinib is a third-generation targeted drug. Targeted drugs are a class of drugs that act on cancer cells in a specific way to reduce damage to healthy cells and attack cancer cells more specifically.

First-generation targeted drugs usually target widespread targets, such as epidermal growth factor receptor (EGFR) or cytochromeP450enzyme (CYP450enzyme). These drugs have had some success in some cancer types, but they also often have adverse effects on normal cells.

Second-generation targeted drugs have more precisely targeted specific molecular targets, such as Imatinib (Imatinib), a BCR-ABL fusion protein used to treat chronic myelogenous leukemia (CML ). These drugs have significantly improved survival rates for some cancer patients.

The third generation of targeted drugs such as larotrectinib more precisely targets specific gene mutations or fusion events, which are relatively rare but significantly pathogenic in specific types of cancer. Larotrectinib is primarily used to treat NTRK gene fusion-positive tumors, a rare but specific type of cancer. The development of this drug is based on an in-depth understanding of tumor molecular biology. It can inhibit tumor growth by inhibiting abnormal cell signaling triggered by NTRK gene fusion events.

Collectively, third-generation targeted drugs represent further innovations in cancer treatment, offering hope to patients who previously had no suitable treatment options by more precisely intervening in tumor cell survival and proliferation mechanisms. This approach to personalized treatment is expected to improve patients' survival rates and quality of life.

Larotrectinib has been launched in China, but it has not been included in medical insurance. Since it has not been launched in China for a long time, it may be difficult to purchase it in China. Please consult the local hospital pharmacy for details. There are original drugs and generic drugs of larotrectinib abroad. The original drugs include German version, American version, European version and Hong Kong version. The price is basically around 20,000 yuan. Generic drugs include Lao and Bangladeshi versions, with prices ranging from two to three thousand. The ingredients of original drugs and generic drugs are basically the same.