What should I do if I become resistant to Neratinib?

HER2 activating mutations are a targetable alteration in MBC and can be inhibited by neratinib. In heavily pretreated patients with metastatic breast cancer, alterations in more than one HER2 signaling pathway, either in the HER2 gene itself or downstream in the signaling cascade, may prevent the initial response. In the her2-mutant PDX model, the combination of neratinib and trastuzumab did show synergistic tumor growth inhibition, and the safety and preliminary efficacy of neratinib plus T-DM1 has been demonstrated in patients with HER2-positive breast cancer.

Dual HER2-targeted therapy has shown strong clinical activity against HER2-mutated metastatic breast cancer by adding trastuzumab to neratinib in combination with fulvestrant in patients with HR-positive metastatic breast cancer;Simultaneous targeting of HER2 and CDK4/6 may warrant exploration as part of a first-line approach in this setting. Given the gastrointestinal toxicity profile of neratinib, any combination approach will require diligent clinical management, although neratinib dose escalation may help mitigate adverse events.

NeratinibThe original drug is marketed in China as neratinib maleate tablets and is covered by Class B medical insurance, but reimbursement is limited to patients who meet the indications. SpecificationsThe price of each box of 40mg*180 tablets may be around 7,000 yuan. Generic drugs of neratinib are also sold overseas. The drug ingredients are basically the same as those of the original drug. The price of 40mg*180 tablets produced by Bangladesh pharmaceutical factory may be around 4,000 yuan per box (the price may fluctuate due to the exchange rate). For more information about overseas drugs and specific prices, please consult Yaode Medical Consultant.