" /> Bloom syndrome - CISMeF





Preferred Label : Bloom syndrome;

Symbol : BLM;

CISMeF acronym : BLM; BLS; MGRISCE1;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Bs; BLS; MGRISCE1; Microcephaly, growth restriction, and increased sister chromatid exchange 1;

Description : Bloom syndrome is an autosomal recessive disorder characterized by proportionate pre- and postnatal growth deficiency; sun-sensitive, telangiectatic, hypo- and hyperpigmented skin; predisposition to malignancy; and chromosomal instability.;

Inheritance : Autosomal recessive;

Molecular basis : Caused by mutation in the RecQ protein-like 3 gene (RECQL3, 604610.0001);

Neoplasia : Leukemia; Lymphoma; Adenocarcinoma; Squamous cell carcinoma; Hypersensitivity to chemotherapy;

Laboratory abnormalities : Decreased IgA, IgG, IgM; High sister chromatid exchange (SCE) rate; Increased chromosomal breakage; SCE normal in heterozygotes;

Prefixed ID : #210900;

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02/05/2025


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