GRI Bio Receives Authorization to Conduct Phase 2a Biomarker Study Evaluating GRI-0621 in Australia

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GRI Bio, Inc.
GRI Bio, Inc.

MHRA and HREC authorization in Australia further expands and will potentially accelerate enrollment in ongoing U.S. and UK Phase 2a biomarker study evaluating lead program GRI-0621 for the treatment of Idiopathic Pulmonary Fibrosis (“IPF”)

Company on track to report interim data Q4 2024 and topline data Q1 2025

LA JOLLA, CA, Sept. 26, 2024 (GLOBE NEWSWIRE) -- GRI Bio, Inc. (NASDAQ: GRI) (“GRI Bio” or the “Company”), a biotechnology company advancing an innovative pipeline of Natural Killer T (NKT) cell modulators for the treatment of inflammatory, fibrotic and autoimmune diseases, today announced the authorization of its Clinical Trial Application (CTA) by the Australian Medicines and Healthcare products Regulatory Agency (MHRA) and the Human Research Ethics Committee (HREC) to initiate a Phase 2a biomarker study evaluating GRI-0621 for the treatment of IPF in Australia.

“Receiving authorizations from the Australian MHRA and HREC further expands the global reach of our clinical development for GRI-0621 and enables us to have access to the right patients for the study which we believe will accelerate enrollment. We are pleased with the continued progress in the U.S. and UK with our ongoing Phase 2a study and remain on track to report important data readouts in Q4 2024 and Q1 2025,” Marc Hertz, PhD, Chief Executive Officer of GRI Bio.

IPF is a rare chronic progressive pulmonary disease with abnormal scarring of the lung blocking the movement of oxygen into the bloodstream. The architectural destruction of the lung results in breathlessness, significant decline in quality of life and an average untreated survival of 3.5 years from diagnosis. Currently available treatments for IPF are limited with only two approved drugs that come with significant side-effects, limited compliance and no impact on survival1.

The Phase 2a, randomized, double-blind, multi-center, placebo-controlled, parallel-design, 2-arm study will enroll approximately 36 subjects with IPF whom will be randomized in a 2:1 ratio for GRI-0621 4.5mg or a placebo. GRI-0621 dose of 4.5mg will be compared with a dose of placebo following once daily oral administration for 12 weeks. Concurrently, a sub-study will examine the number and activity of NKT cells in bronchoalveolar lavage (“BAL”) fluid for up to 12 eligible subjects (across various centers). An interim analysis will be performed when 24 subjects (of which approximately 8 will be placebo subjects) complete 6 weeks of treatment. The primary endpoint for the study is safety and tolerability of oral GRI-0621 as assessed by clinical labs, vital signs and adverse events after 12 weeks of treatment. Secondary endpoints are baseline changes in serum biomarkers collected at week 6 and week 12; an assessment of the pharmacokinetics (PK) of GRI-0621 at the week 12 visit of treatment (steady state); and a determination of the pharmacodynamic activity of oral GRI-0621 as measured by inhibition of iNKT cell activation in blood after 6 weeks and 12 weeks, and from BAL fluid after 12 weeks of treatment in a sub-study. Additional exploratory endpoints for the study are to assess the effect of GRI-0621 on pulmonary function at baseline and after 6 weeks and 12 weeks of treatment and flow cytometry and differential gene expression at various time points.