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Familial X-linked Ichthyosis, Steroid Sulfatase Deficiency, Mental Retardation, and Nullisomy for Xp223-pter

John Barrie Ross, MB, FRCP(C), DObst, RCOG; Penelope Witte Allderdice, PhD, FCCMG; Larry Jay Shapiro, MD; John Aveling, MB; Brenda Ann Eales; Douglas Simms Jr, MD
Arch Dermatol. 1985;121(12):1524-1528. doi:10.1001/archderm.1985.01660120050018.
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• Steroid sulfatase (STS)—deficient X-linked ichthyosis was diagnosed in a man with short stature and mental retardation. His generation includes five similarly affected male members. A translocation chromosome is segregating in this Newfoundland kindred. The proband's mother and grandmother have normal skin and are of normal intelligence. From his carrier mother, the proband inherited an X short arm (Xp) to Y long arm (Yq) translocation chromosome, with the entire Y short arm and the X short arm terminal segment deleted (Xp223-pter). His cells are completely deficient in STS activity, confirming assignment of the STS locus to Xp223-pter. Effective management of his ichthyosis included treatment with 6% salicylic acid gel under plastic occlusion and removal of the scales by scrubbing.

(Arch Dermatol 1985;121:1524-1528)

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