BioWorld tracked 209 clinical trial readouts across phases I through III in March 2026, up from 152 in February and 144 in January. Among late-stage programs, 26 phase III trials reported positive results, two produced mixed results, and three failed to meet key endpoints. By phase, March updates included 62 from phase I, 74 from phase II and 73 phase III.

BioWorld tracked 209 clinical trial readouts across phases I through III in March 2026, up from 152 in February and 144 in January. Among late-stage programs, 26 phase III trials reported positive results, two produced mixed results, and three failed to meet key endpoints. By phase, March updates included 62 from phase I, 74 from phase II and 73 phase III.

United Therapeutics Corp. is eyeing a possible priority review in its anticipated supplemental NDA for Tyvaso (treprostinil) in idiopathic pulmonary fibrosis (IPF) after the second phase III trial hit its endpoints, even besting the impressive findings from the first phase III study reported last year, and positioning United for a substantial commercial launch in 2027.

In September 2025, BioWorld recorded 230 clinical trial updates spanning phases I through III, up sharply from 95 in August, 140 in July and just below 254 in June. Among these, 22 phase III trials reported positive outcomes, while four ended in failure and another three produced mixed results.

In September 2025, BioWorld recorded 230 clinical trial updates spanning phases I through III, up sharply from 95 in August, 140 in July and just below 254 in June. Among these, 22 phase III trials reported positive outcomes, while four ended in failure and another three produced mixed results.

Following positive data from competitors earlier this year, United Therapeutics Corp. rolled out impressive and unexpected phase III results of nebulized Tyvaso (treprostinil) for idiopathic pulmonary fibrosis (IPF), setting the stage for an sNDA filing with the U.S. FDA next year.  If approved for the indication, United, of Silver Spring, Md., and Research Triangle Park, N.C., could tap into what analysts say is a $4 billion-plus market.

Insmed Inc.’s chair and CEO, Will Lewis, called the phase IIb trial of TPIP in pulmonary arterial hypertension a “clear and unequivocal success,” with analysts and investors wholeheartedly agreeing, as the company’s shares surged 28.7% June 10.

Despite the U.S. FDA’s tentative approval of Liquidia Corp.’s Yutrepia (treprostinil) for treating pulmonary arterial hypertension and pulmonary hypertension associated with interstitial lung disease, the company is stuck in the starting gate. Liquidia said it disagrees with the agency’s stance of simultaneously granting regulatory exclusivity in both indications to United Therapeutics Corp.’s powdered formulation of treprostinil, branded Tyvaso, until May 23, 2025. That means full approval for the inhalation powder won’t come until after that date and neither will a Yutrepia launch.

Instead of inter partes review (IPR) being a streamlined alternative to costly patent litigation as intended, a precedential decision by the U.S. Circuit Court of Appeals for the Federal Circuit could make appeals of IPR decisions, regardless of their merits, another way to delay competition.