Preparing for next month’s launch of the first U.S. FDA-approved therapy for activated phosphoinositide 3-kinase delta syndrome (APDS), a rare disease only identified 10 years ago, Pharming Group NV disclosed pricing for the newly branded Joenja (leniolisib) of $750 per tablet, or $547,500 per year.

Pharming Group NV’s stock skyrocketed March 24 on news that the U.S. FDA approved Joenja (leniolisib) to treat activated phosphoinositide 3-kinase delta syndrome (APDS) for those ages 12 and older. The nod, which came a few days ahead of the March 29 PDUFA date, sent shares (NASDAQ:PHAR) up 33%, or $3.69, to end the day at $14.96.

Shares in Pharming Group NV were up after the company announced detailed data from its phase II/III trial of leniolisib for the rare disease activated phosphoinositide 3-kinase delta (PI3K-delta) syndrome (APDS).