Effisayil™ 1: A Study to Test Spesolimab (BI 655130) in Patients With a Flare-up of a Skin Disease Called Generalized Pustular Psoriasis

Completed

Plain-English translation of NCT03782792 on ClinicalTrials.gov ↗ · Source last updated October 2025 · How we translate trials

Phase 2 — Testing in a bigger group (up to a few hundred people) to see if the treatment actually works and is still safe.

Trial locations(37 sites)

United States

University of Alabama at Birmingham, Birmingham, Alabama

University of Miami, Miami, Florida

University of South Florida, Tampa, Florida

Icahn School of Medicine at Mount Sinai, New York, New York

China

The First Hospital of Dalian Medical University, Dalian