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GRI Bio Announces Additional Positive Data from Phase 2a Study in Idiopathic Pulmonary Fibrosis

GRI Bio, Inc. (GRI) | January 8, 2026

By Xander Turner

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GRI Bio, Inc. announces positive flow cytometry data from the Phase 2a GRI-0621-IPF-02 clinical trial for Idiopathic Pulmonary Fibrosis (IPF).

The data confirms a disease-modifying mechanism and shows improvements in lung function and fibrosis resolution.

The Phase 2a study demonstrated a safety and tolerability profile different from existing treatment options.

Positive Flow Cytometry Data

Immune cell profiling confirms anti-fibrotic mechanism with increased IFN-gamma and reduced pro-fibrotic cytokines.

Dual Mechanism of Action

GRI-0621 acts as both an immunomodulator and an anti-fibrotic agent, showing favorable safety and tolerability.

Clinical Proof-of-Concept

Consistent data strengthens evidence of collagen turnover, lung tissue repair, and improved pulmonary function with GRI-0621.

  • The Phase 2a study met primary and secondary endpoints, indicating potential disease modification and lung repair.
  • Results suggest a promising treatment option for patients with Idiopathic Pulmonary Fibrosis, addressing an unmet medical need.

GRI Bio's Phase 2a study results reinforce the potential of GRI-0621 as a safe and effective treatment for IPF patients. The data supports further development and validation of this innovative therapy in the field of inflammatory and fibrotic diseases.