ELOVL5 also known as HELO1 is a member of the ELO family. ELOVL5 plays a crucial role in elongating monounsaturated and polyunsaturated fatty acids, specifically those with 18 to 20 carbon chains, which is vital for maintaining cellular membrane integrity and signaling pathways. ELOVL5 is predominantly expressed in the adrenal gland and testis, but is also found in the lung, brain, and prostate tissue, highlighting ELOVL5′s importance in various physiological processes. Additionally, ELOVL5 is localized to the sebaceous glands in the pheromone-producing regions of the skin, suggesting a potential role in pheromone production and regulation, which could have implications for social and reproductive behaviors in humans.