Calliditas Therapeutics AB is set to be acquired by the Japanese conglomerate Asahi Kasei Corp in a transaction that values the Swedish developer of drugs for rare diseases at SEK 11.8 billion ($1.1 billion). The bid comes just six months after Calliditas received full US Food and Drug Administration for its lead product, Tarpeyo (budesonide), for primary immunoglobulin A nephropathy (IgAN), a rare kidney disease.
