Polypeptide N-acetylgalactosaminyltransferase 1, which catalyses the initial reaction in O-linked oligosaccharide biosynthesis48, and cholinephosphotransferase 1, which catalyses phosphatidylcholine biosynthesis from CDP-choline and plays a central role in the formation and maintenance of vesicular membranes49, were also suggested to have a relationship with pereiopod and swimming stroke development. This evidence concerns the gene GALNT1 and stroke disorder.