Maternal mild hyperphenylalaninemia: results of treated and untreated pregnancies in two sisters.

Levy, H L; Goss, B S; Sullivan, D K; Michals-Matalon, K; Dobbs, J M; Guldberg, P; Güttler, F · J Pediatr · 1994

case_control · Level III

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Abstract

The outcomes of mild hyperphenylalaninemia (MHP) in three children of two sisters were compared. The IQ of the child from an untreated pregnancy was 105; the developmental quotients of the two infant offspring from treated and untreated pregnancies were 122 and 114, respectively. The IQ of the sister with untreated MHP was 101; that of the sister who received dietary treatment for MHP during infancy was 90. Thus MHP and maternal MHP appear to have been clinically inconsequential in this family.

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