Pyrotinib Maleate, CDK4/6 Inhibitor and Letrozole in Combination for Stage II-III TPBC: a Phase II Trial

Breast Cancer Clinical Trial

Official title: Pyrotinib Maleate, CDK4/6 Inhibitor and Letrozole in Combination for Treatment of Stage II-III Triple-positive Breast Cancer: a Phase II Clinical Trial

Status Active, not recruiting

Clinical Trial Summary

The emergence of CDK4/6 inhibitors has brought hope to breast cancer patients resistant to endocrine therapy. In the mouse model, pyrotinib maleate combined with CDK4/6 inhibitor exhibits higher anti-tumor activity than any anti-tumor drug alone. Moreover, the toxicity of the combined therapy does not increase compared with monotherapy. This provides a good preclinical model for the treatment of breast cancer by pyrotinib maleate combined with CDK4/6 inhibitor. Based on above, it is hypothesized that pyrotinib maleate, CDK4/6 inhibitor SHR6390 and aromatase inhibitor letrozole in combination can provide a better neoadjuvant strategy for stage II-III triple-positive breast cancer.

Clinical Trial Description

This single-center, single-arm, open-label trial will include 89 patients with stage II-III triple-positive breast cancer (Simon's two-stage design). After providing written informed consent, the participants will undergo combined treatment of pyrotinib maleate, CDK4/6 inhibitor SHR6390, and letrozole. The effectiveness of the combined treatment will be evaluated by MRI every two treatment cycles. If the disease progresses, the participant will withdraw from the trial. If the combined treatment has identified effectiveness, the participant will undergo surgical treatment within 4 weeks (over 2 weeks) after termination of the neoadjuvant treatment. The patients will be followed up for 5 years. ;

Related Conditions & MeSH terms

• Breast Cancer
• Breast Neoplasms

• NCT number: NCT04486911
• Study type: Interventional
• Source: Shengjing Hospital
• Status: Active, not recruiting
• Phase: Phase 2
• Start date: July 27, 2020
• Completion date: December 30, 2026