Likewise, IFT81 male mice were infertile associated with reduced IFT-B components in testes, and others, including IFT20, IFT25, IFT27, IFT57, IFT74, and IFT88, but there was no change in the IFT-A complex protein IFT140 [27]. This evidence concerns the gene IFT20 and Infertility.