Moon et al. [21] reported the development of hepatic steatosis and female reproductive problems in adult mice after ELOVL5 knockout, which led to elevated levels of hepatic triacylglycerols due to increased activities of sterol regulatory element-binding protein (SREBP)-1c and products of their target genes, such as insulin-sensitive glucose transporter type 4 and acetylcholine. This evidence concerns the gene ELOVL5 and fatty liver disease.