Mylan N.V. and Biocon Ltd. announced submission of Mylan's biologics license application (BLA) for MYL-1401O, a proposed biosimilar trastuzumab, to the U.S. Food and Drug Administration (FDA) through the 351(K) pathway. This product is a proposed biosimilar to branded trastuzumab, which is indicated to treat certain HER2-positive breast and gastric cancers. Mylan and Biocon believe that this has the potential to be the first submission of a proposed biosimilar trastuzumab in the U.S.