Infeility is a common feature in Seoli cell only syndrome, because:
The absence of germ cell (Seoli Cell-only syndrome) causes infeility. The main characteristic of Seoli Cell, syndrome consists of testicular tubes that show a moderate decrease in diameter and are void of germ cells. Also the testes decrease in size and are azoospermia.
Too many Seoli cells inhibit spermatogenesis , inhibin
Proper blood testis barrier is not established
There is no germ cells in this condition
Sufficient numbers of spermatozoa are not produced