Cara Therapeutics, Inc. and Vifor Pharma Group ’s Korsuva (difelikefalin) reached the end of the long path to approval on 23 August, as the intravenous kappa opioid receptor agonist was cleared by the US Food and Drug Administration to treat pruritus in chronic kidney disease patients on dialysis. Cara’s prospects for an oral version of the drug remain unclear, however, given mixed data reported earlier this year in atopic dermatitis.
For more than a decade, Connecticut-based Cara has built its whole business strategy around difelikefalin, with a particular emphasis on...