Researchers at Johns Hopkins Bloomberg School of Public Health found that biosimilar drugs perform as well as the brand-name biologics. They analyzed data from 19 studies of biosimilars that treat rheumatoid arthritis, inflammatory bowel disease and psoriasis to reach their conclusion. Many drug innovators, on the other hand, argue that biosimilars are not equivalent to their reference products and shouldn’t be used willy-nilly as a substitute. It’s complicated so don’t expect this argument to be solved definitively any time soon (or ever?). There are currently more than 50 biosimilars in development and the Johns Hopkins study could be weighty in terms of future product adoption.