Aclaris ham­mered as hair loss drug flops in PhII, days af­ter FDA took is­sue with Es­ka­ta ads

The top­i­cal treat­ment for alope­cia area­ta that Aclaris Ther­a­peu­tics li­censed from Rigel Phar­ma has failed a mid-stage study for alope­cia area­ta, leav­ing the com­pa­ny with a drug that seems to have caused no harm but no ben­e­fit ei­ther.

While ex­ecs vowed to find a pos­si­ble way for­ward with sub­group analy­sis, the re­sults didn’t leave much room for hope. Nei­ther the 0.46% or 0.12% con­cen­tra­tions of ATI-502 proved su­pe­ri­or to place­bo in im­prov­ing scalp hair cov­er­age — at least not in a sta­tis­ti­cal­ly sig­nif­i­cant way. In fact, an un­ex­pect­ed­ly ef­fec­tive ve­hi­cle out­per­formed the low­er dose on sev­er­al end­points, which were al­ter­na­tive mea­sure­ments of hair loss sever­i­ty.

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