RT Journal Article SR Electronic T1 Unknown syndrome. A possible new X linked retardation syndrome: dysmorphic facies, microcephaly, hypotonia, and small genitalia. JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 339 OP 340 DO 10.1136/jmg.27.5.339 VO 27 IS 5 A1 M E Porteous A1 J Burn YR 1990 UL http://jmg.bmj.com/content/27/5/339.abstract AB The proband, the first child of unrelated parents, was noted in infancy to have microcephaly, developmental delay, dysmorphic facies, hypotonia, a small penis with cryptorchidism, and a fixed flexion deformity of his left index finger. His maternal uncle is severely retarded and has similar dysmorphic facies.