Disease or Syndrome
dyskeratosis congenita
Subclass of:
Congenital Bone Marrow Failure Syndromes;
Genetic Diseases, X-Linked;
Skin Diseases, Genetic;
Skin Abnormalities
Definitions related to dyskeratosis congenita:
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A predominantly X-linked recessive syndrome characterized by a triad of reticular skin pigmentation, nail dystrophy and leukoplakia of mucous membranes. Oral and dental abnormalities may also be present. Complications are a predisposition to malignancy and bone marrow involvement with pancytopenia. (from Int J Paediatr Dent 2000 Dec;10(4):328-34) The X-linked form is also known as Zinsser-Cole-Engman syndrome and involves the gene which encodes a highly conserved protein called dyskerin.NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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A rare genetic disorder characterized by nail dystrophy, reticulated skin pigmentation especially on the neck and chest, and oral leukoplakia. In about half the cases mutations in the TERT, TERC, DKC1, or TINF2 genes are identified. Patients are at an increased risk of developing bone marrow failure, myelodysplastic syndrome, leukemia, or cancer, especially in the head and neck region.NCI ThesaurusU.S. National Cancer Institute, 2021
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Dyskeratosis congenita (DC), a telomere biology disorder, is characterized by a classic triad of dysplastic nails, lacy reticular pigmentation of the upper chest and/or neck, and oral leukoplakia. The classic triad may not be present in all individuals. People with DC are at increased risk for progressive bone marrow failure (BMF), myelodysplastic syndrome (MDS) or acute myelogenous leukemia (AML), solid tumors (usually squamous cell carcinoma of the head/neck or anogenital cancer), and pulmonary fibrosis. Other findings can include: abnormal pigmentation changes not restricted to the upper chest and neck, eye abnormalities (epiphora, blepharitis, sparse eyelashes, ectropion, entropion, trichiasis), and dental abnormalities (caries, periodontal disease, taurodauntism). Although most persons with DC have normal psychomotor development and normal neurologic function, significant developmental delay is present in the two variants in which additional findings include cerebellar hypoplasia (Hoyeraal Hreidarsson syndrome) and bilateral exudative retinopathy and intracranial calcifications (Revesz syndrome). Onset and progression of manifestations of DC vary: at the mild end of the spectrum are those who have only minimal physical findings with normal bone marrow function, and at the severe end are those who have the diagnostic triad and early-onset BMF.GeneReviewsUniversity of Washington, 2021
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Dyskeratosis congenita (DKC), also known as Zinsser-Engman-Cole syndrome, is a rare, progressive bone marrow failure syndrome characterized by the triad of reticulated skin hyperpigmentation, nail dystrophy, and oral leukoplakia. Evidence exists for telomerase dysfunction, ribosome deficiency, and protein synthesis dysfunction in this...WebMD, 2019
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Dyskeratosis congenita is a disorder that may affect many parts of the body. Three features are especially characteristic of this disorder: (1) fingernails and toenails that grow poorly or are abnormally shaped; (2) changes in skin coloring (pigmentation), especially on the neck and chest, that resembles the appearance of lace; and (3)...National Center for Advancing Translational Sciences
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