CACNG3 (calcium voltage-gated channel auxiliary subunit gamma 3) is a regulatory protein that modulates AMPA receptor trafficking and calcium channel function in neurons. The protein promotes AMPA receptor targeting to synapses and modulates their gating properties by slowing activation, deactivation, and desensitization rates 1. CACNG3 is thought to stabilize calcium channels in an inactivated state and plays a role in synaptic transmission and neuronal excitability 1. Disease relevance studies demonstrate that CACNG3 expression is significantly decreased in multiple brain regions of Alzheimer's disease patients, where it appears to regulate synaptic plasticity through calcium signaling pathways 2. Additionally, CACNG3 shows associations with childhood absence epilepsy, with linkage analysis revealing significant associations in nuclear families and transmission disequilibrium in specific genomic regions 3. The gene also demonstrates prognostic significance in gliomas, where low expression correlates with shorter overall survival and higher tumor grades 4. Clinically, CACNG3 represents a potential biomarker for neurodegenerative diseases and epilepsy, with therapeutic implications for conditions involving synaptic dysfunction and altered neuronal excitability 23.