Semaphorin-5A is a protein that in humans is encoded by the SEMA5A gene.[5][6][7]
Members of the semaphorin protein family, such as SEMA5A, are involved in axonal guidance during neural development.[7][5]
Semaphorin 5A also plays a role in autism, reducing the ability of neurons to form connections with other neurons in certain brain regions.[8][9]