Detailed explanation of the working principle and indications of Zolbetuximab (Vyloy, Zolbetuximab)

Zolbetuximab (Vyloy, Zolbetuximab) is a cutting-edge biologic that belongs to the class of chimeric immunoglobulin G1 (IgG1) monoclonal antibodies. Its uniqueness lies in its ability to precisely target Claudin 18.2 (CLDN18.2), a transmembrane protein that is expressed in normal gastric parietal cells but is abnormally highly expressed in cancer cells such as gastric cancer and gastroesophageal cancer. As cancer progresses, CLDN18.2 is significantly exposed on the surface of cancer cells, making it an ideal target for zotuximab.

Zotuximab can specifically bind to CLDN18.2 on the surface of cancer cells after being injected into the body through intravenous injection. This binding not only directly interferes with the growth signals of cancer cells, but also triggers two powerful immune mechanisms - antibody-dependent cytotoxicity (ADCC) and complement-dependent cytotoxicity (CDC). These two mechanisms work together on cancer cells, causing them to be effectively destroyed, thereby inhibiting the proliferation and spread of cancer cells.

The indications of zotuximab mainly focus on the treatment of patients with human epidermal growth factor receptor2 (HER2) negative and CLDN18.2 positive, unresectable, advanced or recurrent gastric cancer. This innovative treatment provides new hope for these patient groups where traditional treatments are limited.

However, it is worth noting that as a prescription drug, zotuximab must be used strictly in accordance with the instructions and prescriptions of your doctor. Patients should fully consult their doctor before receiving treatment to understand the indications, usage and dosage of the drug, and possible adverse reactions. At the same time, during the medication process, patients should pay close attention to their own conditions. If any uncomfortable symptoms occur, they should inform the doctor immediately so that the treatment plan can be adjusted in a timely manner to ensure the safety and effectiveness of the medication.

It is understood that zotuximab is currently only available for sale overseas, with a box costing about more than 10,000 yuan. Patients should be sure to choose formal channels when purchasing, and pay attention to distinguishing the authenticity of drugs.