Too many copies of the HER2 gene or its overexpression appeared to cause an especially aggressive form of the disease. By the late ’90s, a drug called Herceptin that targeted the HER2 receptor, sped ...

The FDA has approved Amgen and Allergan’s biosimilar of Roche’s Herceptin, just in time for the breast cancer blockbuster’s patent expiry. Herceptin’s main US patent expires this month ...