Catalyst Pharmaceuticals IncVamorolone shows anti-inflammatory activity without significant immunosuppression at clinical doses, supporting its potential for chronic inflammatory rare diseases.

Catalyst Pharmaceuticals announced topline results from a two-part Phase 1 study showing vamorolone delivers glucocorticoid and anti-inflammatory activity without evidence of significant immunosuppressive effects at clinical doses. In Part A, 24 healthy adults received single doses of vamorolone 300 mg and deflazacort 0.9 mg/kg, with both demonstrating expected cortisol suppression and comparable onset, but vamorolone showed less pronounced immunosuppressive biomarker effects. In Part B, 36 healthy volunteers received vamorolone at 9, 27, or 40 mg/kg once daily for seven days; clinically relevant immunosuppressive effects were observed only at the highest dose of 40 mg/kg/day, which is above currently approved dosing. The findings support vamorolone's potential use across a broad range of chronic inflammatory rare diseases.
Catalyst Pharmaceuticals IncVamorolone shows anti-inflammatory activity without significant immunosuppression at clinical doses, supporting its potential for chronic inflammatory rare diseases.