DRL-Trastuzumab was found to have similar efficacy, safety, pharmacokinetics, and immunogenicity as Herceptin in HER2-positive breast cancer patients in a randomized, double-blind study. Trastuzumab, marketed under the brand name Herceptin, is a standard therapy for human epidermal growth factor receptor 2 (HER2)-positive breast cancer. The drug DRL_TZ, a potential trastuzumab biosimilar to Herceptin, was developed...