CHRNA9 (Cholinergic Receptor Nicotinic Alpha 9 Subunit) is a Protein Coding gene. Diseases associated with CHRNA9 include Deafness, Autosomal Recessive 25 and Nicotine Dependence, Protection Against. Among its related pathways are Activation of Nicotinic Acetylcholine Receptors and Nanog in Mammalian ESC Pluripotency. GO annotations related to this gene include calcium channel activity. An important paralog of this gene is CHRNA10.This gene is a member of the ligand-gated ionic channel family and nicotinic acetylcholine receptor gene superfamily. It encodes a plasma membrane protein that forms homo- or hetero-oligomeric divalent cation channels. This protein is involved in cochlea hair cell development and is also expressed in the outer hair cells (OHCs) of the adult cochlea.