OR2W3 is an olfactory receptor gene located on chromosome 1 that functions as an odorant receptor involved in detection of chemical stimuli and sensory perception of smell 1. Beyond its canonical olfactory role, OR2W3 demonstrates ectopic expression in multiple non-olfactory tissues with functional significance. In the thyroid gland, OR2W3 activation by specific ligands triggers intracellular calcium and cAMP signaling cascades, affecting cellular migration, proliferation, and invasion 2. Notably, linoleic acid activates OR2W3 to mediate anti-asthmatic effects through ectopic olfactory signaling in airway smooth muscle tissue 1. In breast cancer, OR2W3 expression correlates with invasion genes and basal-like tumor subtypes, suggesting a potential role in cancer progression 3. OR2W3 variants have been identified in association with male infertility; specifically, the rs11204546 genotype correlates with FSH levels in non-obstructive azoospermia patients 4. Additionally, OR2W3 variants were identified through whole exome sequencing as associated with glaucoma medication non-adherence 5. However, OR2W3 sequence variants are unlikely to cause inherited retinal diseases such as retinitis pigmentosa, as polymorphic variants occur at frequencies incompatible with disease causation 6. These findings establish OR2W3 as a multifunctional olfactory receptor with emerging clinical relevance in various disease contexts.