Orphanet: TMEM165 CDG

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Disease definition

TMEM165-CDG is a form of congenital disorders of N-linked glycosylation characterized by a psychomotor delay-dysmorphism (pectus carinatum, dorsolumbar kyphosis and severe sinistroconvex scoliosis, short distal phalanges, genua vara, pedes planovalgi syndrome) with postnatal growth deficiency and major spondylo-, epi-, and metaphyseal skeletal involvement. Additional features include facial dysmorphism (midface hypoplasia, internal strabism of the right eye, low-set ears, moderately high arched palate, small teeth), nephrotic syndrome, cardiac defects, and feeding problems. The disease is caused by mutations in the gene TMEM165 (4q12).


Classification level: Disorder
  • Synonym(s):
    • CDG syndrome type IIk
    • CDG-IIk
    • CDG2K
    • Carbohydrate deficient glycoprotein syndrome type IIk
    • Congenital disorder of glycosylation type 2k
    • Congenital disorder of glycosylation type IIk
  • Prevalence: <1 / 1 000 000
  • Inheritance: Autosomal recessive 
  • Age of onset: Infancy, Neonatal
  • ICD-10: E77.8
  • OMIM: 614727
  • UMLS: -
  • MeSH: -
  • GARD: 12413
  • MedDRA: -

Detailed information


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