Saddled with disappointing results from a phase III trial with Filspari (sparsentan) in focal segmental glomerulosclerosis (FSGS), officials of Travere Therapeutics Inc. stressed the differences between that disorder and IgA nephropathy (IgAN) – for which the drug was cleared by the U.S. FDA in February. Two-year IgAN efficacy data are due in the fourth quarter of this year.