CATSPER2 and Reduced sperm motility: Solute carrier family 26, member 8 (SLC26A8) mapped on chromosome 6 at 6p21 has been reported to be associated with nonobstructive asthenozoospermia.[22] Cation channel, sperm-associated, 2 (CATSPER2) is located on chromosome 15q15.3, and is associated with nonsyndromic male infertility.[23] Further research will be necessary to explore the molecular mechanisms, and genetic basis for these carriers, and their phenotypes.