STOCKHOLM, March 6, 2024 /PRNewswire/ --  Calliditas Therapeutics AB (Nasdaq: CALT) (Nasdaq Stockholm: CALTX) ('Calliditas') today announced that the FDA has granted an orphan drug exclusivity period of seven years for TARPEYO®, expiring in December 2030 based on when the company obtained full approval with a new indication for this drug product. Following full approval in December 2023, TARPEYO® (budesonide) is indicated 'to reduce the loss of kidney function in adults with primary immunoglobulin A nephro ...