LAMA1 encodes laminin subunit alpha 1, a critical extracellular matrix protein that mediates cell attachment, migration, and tissue organization during development 1. As a component of laminin-1 (laminin-111), LAMA1 functions through multiple signaling pathways: it serves as a ligand for alpha-dystroglycan, activates PI3K/AKT and RAC1 signaling, and promotes acetylcholine receptor clustering at the neuromuscular junction 2. LAMA1 shows high expression in trophectoderm but lower expression in the inner cell mass during early embryonic development 3. Biallelic LAMA1 mutations cause Poretti-Boltshauser syndrome, characterized by cerebellar dysplasia with cysts, high myopia, and variable retinal dystrophy 1, 4. Notably, LAMA1 can functionally compensate for deficiency of LAMA2 (laminin alpha-2), making CRISPRa-mediated LAMA1 upregulation a potential therapeutic strategy for merosin-deficient muscular dystrophy 2. LAMA1 expression is dysregulated in pathological contexts including glioblastomas, where elevated LAMA1 correlates with angiogenesis and patient survival 5, and in osteosarcomas as a potential diagnostic marker 6. LAMA1 has been identified as a germline risk variant associated with breast and colorectal cancer predisposition 7.