Geneva, June 22 -- International Clinical Trials Registry received information related to the study (ChiCTR2600126680) titled 'Evaluating the Impact of Neoadjuvant Chemotherapy Combined with Trastuzumab ± Pertuzumab/Pyrrolopyrimidine on the Success Rate of Breast-Conserving Surgery in Breast Cancer Patients' on June 13.

Study Type: Observational study

Study Design: Factorial

Primary Sponsor: Guangxi Medical University Cancer Hospital

Condition: breast cancer

Intervention: Dual-target group (exposure group): neoadjuvant therapy with chemotherapy plus Trastuzumab and Pertuzumab or Pyrotinib:None

Recruitment Status: Not Recruiting

Phase: N/A

Date of First Enrollment: 2026-06-30

Target Sample Size: Dual-target group (expo...