Platform Trial for Salvage Consolidation Therapy in Dimorphic Fungi

This Phase II platform trial will evaluate the safety, tolerability, and effectiveness of investigational antifungal agents as salvage or consolidation therapy in adults with dimorphic fungal infections, including coccidioidomycosis, blastomycosis, and histoplasmosis.

The study will enroll adults who are receiving active antifungal therapy and who have intolerance, failure, or unavailability of standard first-line consolidation therapy. The first investigational agent evaluated in the platform trial is oteseconazole.

Participants will receive study drug and complete follow-up assessments for symptom status, functional status, adverse events, laboratory safety, study drug discontinuation, and quality of life. Participants will be followed during therapy and for up to 6 months after therapy.

Dimorphic fungal infections, including coccidioidomycosis, blastomycosis, and histoplasmosis, are commonly treated with azole antifungals such as itraconazole or fluconazole as consolidation therapy. However, some patients experience intolerance, treatment failure, drug interactions, toxicity, or lack of access to standard first-line consolidation therapy. For these patients, treatment options are limited.

This study is an open-label, single-arm Phase II platform trial designed to evaluate investigational antifungal agents as salvage or consolidation therapy in adults with dimorphic fungal infections. The first investigational agent evaluated in this platform is oteseconazole.

Eligible participants will be adults with coccidioidomycosis, blastomycosis, or histoplasmosis who are on active therapy, are expected to require at least 6 additional months of antifungal therapy, and have intolerance, failure, or unavailability of current first-line consolidation therapy. Participants will complete screening and informed consent through REDCap. Study drug will be mailed to participants by the central pharmacy after enrollment.

Participants will complete monthly follow-up surveys assessing symptom status, functional status, quality of life, antifungal therapy changes, and treatment tolerance. Safety monitoring will include adverse event tracking, serious adverse event reporting, and laboratory assessments. Participants will be followed for up to 18 months, including the treatment period and 6 months of post-therapy follow-up.