Seralutinib is an investigational, inhaled, small molecule, platelet-derived growth factor receptor (PDGFR), colony-stimulating factor 1 receptor (CSF1R) and mast/stem cell growth factor receptor kit (c-KIT). It was intentionally designed to target the mechanisms that underlie pulmonary hypertension and to be delivered to the site of disease, via dry powder inhaler.

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Seralutinib is currently being evaluated in a phase 3 clinical trial for the treatment of pulmonary arterial hypertension (PAH). Additionally, Gossamer Bio expects to initiate a global phase 3 registrational clinical trial for the treatment of pulmonary hypertension associated with interstitial lung disease (PH-ILD) mid-2025.

Seralutinib Clinical Development

IndicationPhase 1Phase 2Phase 3
PAH
PH-ILD
Ph 3 initiation expected mid-2025
Phase 1Phase 2Phase 3
PAH
PH-ILDPh 3 initiation expected mid-2025