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Brief Title: Pyrotinib After Trastuzumab-based Adjuvant Therapy in Patients With HER2-positive Breast Cancer
Official Title: Pyrotinib After Trastuzumab-based Adjuvant Therapy in Patients With HER2-positive Breast Cancer: an Open-label, Multi-center Trial
Study ID: NCT05880927
Brief Summary: This trial is a multicenter, open-label, phase II trial conducted at 23 centers in China. High-risk HER2 positive patients receive pyrotinib 400mg/day for one year or half year for extented adjuvant therapy.
Detailed Description: Patients must meet one of the following criteria: N stage ≥1; T stage ≥2; did not achieve pathological complete response (pCR) after neoadjuvant therapy; had pCR after neoadjuvant therapy but with tumor size ≥ 5cm or N stage ≥2; or tumor size less than 2cm but with high Ki67; histologic grade 3 or with lymph node micrometastasis.
Minimum Age: 18 Years
Eligible Ages: ADULT, OLDER_ADULT
Sex: FEMALE
Healthy Volunteers: No
Taizhou Hospital, Taizhou, Zhejiang, China
Name: Feilin Cao, Master
Affiliation: Taizhou Hospital
Role: PRINCIPAL_INVESTIGATOR