Chemotherapy combined with trastuzumab and patuzumab is the standard neoadjuvant therapy for HER2 positive breast cancer patients. The survival rate of patients with pathological complete response (PCR) after neoadjuvant therapy was significantly better than that of patients with tumor residue, that is, non-PCR. Therefore, studies have confirmed that adjuvant therapy for patients with non-PCR after neoadjuvant chemotherapy can further improve the prognosis and survival of this population. However, the results of previous studies are based on trastuzumab target therapy in neoadjuvant therapy. Therefore, there are different recommendations for the current guidelines of adjuvant therapy after trastuzumab combined pertuzumab target neoadjuvant therapy. Patients with HER2 positive breast cancer who received trastuzumab and patuzumab based neoadjuvant therapy had invasive residual cancer in postoperative pathology. The effect of postoperative adjuvant therapy with trastuzumab and patuzumab or replacement of T-DM1 on survival.
Eligibility
Sex
ALL
Min age
—
Max age
—
Healthy volunteers
No
Inclusion Criteria:
* 1\) Patients with HER2 positive breast cancer were diagnosed by biopsy in Peking University People's hospital;
* 2\) The clinical stages before treatment were T1-T4, N0-N3, M0;
* 3\) Received treatment and operation in our hospital, and had hospitalization records;
* 4\) Receive at least 4 cycles of trastuzumab and pertuzumab target therapy combined chemotherapy as neoadjuvant therapy
* 5\) Postoperative pathology confirmed the presence of residual invasive breast cancer in the breast and/or metastatic tumor lesions in axillary lymph nodes;
* 6\) Has signed and agreed to participate in the PKUPH breast disease cohort study.
Exclusion Criteria:
* 1\) Lack of clinical and pathological data (such as imaging data and pathological data);
* 2\) Patients with metastatic breast cancer or bilateral breast cancer;
* 3\) Failure to perform radical surgery;
* 4\) Receiving other regimens besides the established neoadjuvant regimens.
Primary outcome measure(s)
invasive disease free survival — 3 years Time from study enrollment to the first occurrence of the following events defined as failure: local recurrence of ipsilateral invasive breast cancer, contralateral invasive breast cancer, distant recurrence or death from any cause
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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