Defective latching, like in the case of cleft lip, may impair lactation in patients on aripiprazole [95], Likewise, reduced oxytocin and prolactin production may be followed by milk failure; DAPAs, particularly aripiprazole, were related to decreased prolactin production [16,96,97], but in some people with particular genetic characteristics, also to hyperprolactinemia [98], while brexpiprazole [99] and cariprazine [100] were not associated with significant variations in prolactin. The gene discussed is PRL; the disease is hyperprolactinemia.