Neoadjuvant Anbenitamab and HB1801 in ERBB2-Positive Breast Cancer
JAMA Oncology 10.1001/jamaoncol.2026.3329September 03, 2026 at 11:00 AM EDT
Does the combination of ERBB2-biparatopic antibody (anbenitamab) and albumin-bound docetaxel (HB1801) increase the total pathological complete response (tpCR) rate compared with the standard regimen of trastuzumab, pertuzumab, and docetaxel in patients with ERBB2-positive breast cancer? In this randomized clinical trial that included 521 patients with early or locally advanced ERBB2-positive breast cancer, the tpCR rate was significantly higher in the anbenitamab and HB1801 group compared with the control group; both regimens had manageable safety profiles. These findings suggest that neoadjuvant anbenitamab and HB1801 led to clinically meaningful tpCR improvement; this new combination might establish a new standard for neoadjuvant treatment in ERBB2-positive breast cancer.
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