As we ring in the new year, we look back at the top U.S. biosimilar market developments of 2021. Here are our top five: 1. SEMGLEE Launches As First-Ever Interchangeable Biosimilar In July, the FDA approved Viatris Inc.’s (formerly Mylan Pharmaceuticals Inc.) SEMGLEE (insulin-glargine-yfgn), a biosimilar to LANTUS (insulin glargine)….