How to master the usage and dosage of serputinib/serpatinib

Selpercatinib is a selective kinase inhibitor targeting RET gene abnormalities. It is mainly used for RET gene fusion-positive non-small cell lung cancer (NSCLC), RET-mutated medullary thyroid carcinoma (MTC), and other rare RET fusion-driven solid tumors. As a molecular targeted drug, its core value lies in blocking the growth and spread of tumor cells by precisely inhibiting the RET signaling pathway. Since the mechanism of action of this drug is highly specific, it must be combined with genetic testing during clinical application to determine whether the patient has RET gene fusion or mutation, which is a key prerequisite for its therapeutic effect.

In terms of usage and dosage, Seputinib is different from most targeted drugs in that its dosage needs to be adjusted based on the patient’s weight. In general, the recommended dose for patients weighing less than 50 kg is 120 mg orally twice daily, while patients weighing 50 kg and above require 160 mg orally twice a day, approximately every 12 hours. This method of administration can maintain the stability of drug concentration in the body, thereby exerting a sustained inhibitory effect. Treatment should be continued until the disease progresses or the patient develops intolerable side effects before adjustment or discontinuation is considered.

The administration method of Seputinib is relatively flexible. It can be taken with food or on an empty stomach. However, if the patient is taking a proton pump inhibitor (PPI), he or she needs to pay attention to drug interactions. Doctors usually instruct you to take the drug at different time points to avoid affecting the efficacy of the drug. In addition, if the patient vomits after taking the medicine, there is no need to take additional doses, and he can just continue at the next time point as originally planned.

In clinical practice, the dose of seputinib may also be adjusted based on individual tolerance and liver and kidney function status. Some patients may experience side effects such as abnormal liver function, high blood pressure, and diarrhea during treatment. Doctors will choose to reduce the dose or temporarily discontinue the drug based on the level of toxicity.

Reference:https://en.wikipedia.org/wiki/Selpercatinib