Wolf syndrome has been recognized since the mid-sixties. It has also been postulated that the loss of 4p16 is the primary reason for the syndrome. However, in a handful of cases the breakpoints have been identified, only a very few of which are exclusively 4p16. In this report we present familial transmission of 4p16 deletion (associated with 8pter----8p21 duplication) in three individuals with typical expression of Wolf syndrome. The transmission occurs from a de novo balanced maternal translocation, 46,XX,t(4;8)(p16;p21). An effort has also been made to distinguish the terminal deletion syndrome from the emerging interstitial deletion syndrome of 4p.