IQCJ-SCHIP1 is a novel fusion transcript encoding a calmodulin-binding IQ motif protein located on chromosome 3 1. This protein plays a critical role in axon development and neuronal organization, functioning in axon outgrowth, guidance, and action potential conduction through organization of molecular complexes at nodes of Ranvier and axon initial segments 1. IQCJ-SCHIP1 mRNA is highly expressed in the brain and localizes to cytoplasm, actin-rich regions, and neurite extensions in differentiated cells 1. Disruption of IQCJ-SCHIP1 function has significant neurological consequences. A homozygous nonsense mutation (p.R501*) in the C-terminal region causes a neurodevelopmental disorder characterized by global developmental delay, learning difficulties, axonal guidance defects including anterior commissure agenesis, polymicrogyria-cobblestone complex, hearing impairments, and cataracts 2. The truncated protein exhibits marked reduction in stability compared to full-length isoforms 2. Beyond neurological function, IQCJ-SCHIP1 has been identified in genome-wide association studies as associated with lipid metabolism, specifically total cholesterol levels 3, triglyceride response to n-3 PUFA supplementation 4, and longevity in dogs 5. These findings suggest pleiotropic functions extending beyond neuronal development.