Beam Therapeutics (Nasdaq: BEAM) announced FDA clearance of its investigational new drug (IND) application for BEAM-302, targeting alpha-1 antitrypsin deficiency (AATD) treatment. This marks the company's second in vivo base editing program with an open IND in the U.S.
BEAM-302, a liver-targeting lipid-nanoparticle formulation, is designed to correct the PiZ mutation in AATD patients. The ongoing Phase 1/2 trial includes Part A for patients with lung disease and Part B for those with mild to moderate liver disease. Initial safety and efficacy data reported in March 2025 demonstrated proof of concept as a potential one-time treatment.
The treatment has received clinical trial authorization across six countries. Beam plans to continue dose-escalation in Part A, including a fourth dose cohort, and expects to begin dosing Part B patients in H2 2025, with updated data presentation scheduled for the same period.
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