[Sex-linked inheritance in fronto-metaphyseal dysplasia].

The author reports a family study of fronto-metaphyseal dysplasia in a 2 months-old child, in his mother and maternal grand-mother. The child is the more severely affected, while the mother and the grand-mother have less severe manifestations of the syndrome. This evidence permits to confirm the X-linked recessive inheritance of the disease, with severe manifestations in males and variable expression in female carriers.