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22q13 deletion syndrome, known as Phelan–McDermid syndrome (PMS), is a genetic disorder caused by deletions or rearrangements on the q terminal end (long arm) of chromosome 22. Any abnormal genetic variation in the q13 region that presents with significant manifestations ( phenotype ) typical of a terminal deletion may be diagnosed as 22q13 ...
22q13 deletion syndrome (Phelan–McDermid syndrome) [4] is a condition caused by the deletion of the tip of the q arm on chromosome 22. Most individuals with this disorder experience cognitive delays, low muscle tone, and sleeping, eating, and behavioural issues.
This page was last edited on 22 July 2006, at 23:58 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
Significant overlap exists between the phenotype of ring chromosome 22 and that of Phelan-McDermid syndrome, another chromosome 22 deletion syndrome. This is ascribed to a shared deletion of the SHANK3 gene at 22q13.3.
The loss of one particular gene, TBX1, is thought to be responsible for many of the characteristic features of 22q11.2 deletion syndrome, such as heart defects, an opening in the roof of the mouth (a cleft palate), distinctive facial features, and low calcium levels. A loss of this gene does not appear to cause learning disabilities, however.
Phelan-McDermid syndrome: 22q13 D Phenylketonuria: PAH: recessive 1:12,000 Pipecolic acidemia: AASDHPPT: recessive Pitt–Hopkins syndrome: TCF4 (18) dominant, de novo 1:11,000-41,000 Polycystic kidney disease: PKD1 (16) or PKD2 (4) P Polycystic ovary syndrome (PCOS) Porphyria: 1-100:50,000 Prader–Willi syndrome: 15: paternal imprinting 1: ...
Asymmetric crying facies (ACF), also called partial unilateral facial paresis and hypoplasia of depressor angula oris muscle, [1] is a minor congenital anomaly caused by agenesis or hypoplasia of the depressor anguli oris muscle, one of the muscles that control the movements of the lower lip. This unilateral facial weakness is first noticed ...
Bovine facies (or cow face) – craniofacial dysostosis or Crouzon syndrome; Marshall halls facies – hydrocephalus; Frog face – intranasal disease; Coarse facies – many inborn errors of metabolism; Adenoid facies – developmental facial traits caused by adenoid hypertrophy, nasal airway obstruction and mouthbreathing; really a form of ...