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Nijmegen Breakage Syndrome (NBS)

Overview
Publisher Biomed Central
Specialty General Medicine
Date 2012 Mar 1
PMID 22373003
Citations 97
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Abstract

Nijmegen breakage syndrome (NBS) is a rare autosomal recessive syndrome of chromosomal instability mainly characterized by microcephaly at birth, combined immunodeficiency and predisposition to malignancies. Due to a founder mutation in the underlying NBN gene (c.657_661del5) the disease is encountered most frequently among Slavic populations. The principal clinical manifestations of the syndrome are: microcephaly, present at birth and progressive with age, dysmorphic facial features, mild growth retardation, mild-to-moderate intellectual disability, and, in females, hypergonadotropic hypogonadism. Combined cellular and humoral immunodeficiency with recurrent sinopulmonary infections, a strong predisposition to develop malignancies (predominantly of lymphoid origin) and radiosensitivity are other integral manifestations of the syndrome. The NBN gene codes for nibrin which, as part of a DNA repair complex, plays a critical nuclear role wherever double-stranded DNA ends occur, either physiologically or as a result of mutagenic exposure. Laboratory findings include: (1) spontaneous chromosomal breakage in peripheral T lymphocytes with rearrangements preferentially involving chromosomes 7 and 14, (2) sensitivity to ionizing radiation or radiomimetics as demonstrated in vitro by cytogenetic methods or by colony survival assay, (3) radioresistant DNA synthesis, (4) biallelic hypomorphic mutations in the NBN gene, and (5) absence of full-length nibrin protein. Microcephaly and immunodeficiency are common to DNA ligase IV deficiency (LIG4 syndrome) and severe combined immunodeficiency with microcephaly, growth retardation, and sensitivity to ionizing radiation due to NHEJ1 deficiency (NHEJ1 syndrome). In fact, NBS was most commonly confused with Fanconi anaemia and LIG4 syndrome. Genetic counselling should inform parents of an affected child of the 25% risk for further children to be affected. Prenatal molecular genetic diagnosis is possible if disease-causing mutations in both alleles of the NBN gene are known. No specific therapy is available for NBS, however, hematopoietic stem cell transplantation may be one option for some patients. Prognosis is generally poor due to the extremely high rate of malignancies.

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References
1.
Pincheira J, Bravo M, Santos M . G2 repair in Nijmegen breakage syndrome: G2 duration and effect of caffeine and cycloheximide in control and X-ray irradiated lymphocytes. Clin Genet. 1998; 53(4):262-7. DOI: 10.1111/j.1399-0004.1998.tb02693.x. View

2.
Gregorek H, Chrzanowska K, Dzierzanowska-Fangrat K, Wakulinska A, Pietrucha B, Zapasnik A . Nijmegen breakage syndrome: Long-term monitoring of viral and immunological biomarkers in peripheral blood before development of malignancy. Clin Immunol. 2010; 135(3):440-7. DOI: 10.1016/j.clim.2010.01.008. View

3.
Urist M, Tanaka T, Poyurovsky M, Prives C . p73 induction after DNA damage is regulated by checkpoint kinases Chk1 and Chk2. Genes Dev. 2004; 18(24):3041-54. PMC: 535915. DOI: 10.1101/gad.1221004. View

4.
Barth E, Demori E, Pecile V, Zanazzo G, Malorgio C, Tamaro P . Anthracyclines in Nijmegen breakage syndrome. Med Pediatr Oncol. 2002; 40(2):122-4. DOI: 10.1002/mpo.10079. View

5.
Digweed M, Sperling K . Nijmegen breakage syndrome: clinical manifestation of defective response to DNA double-strand breaks. DNA Repair (Amst). 2004; 3(8-9):1207-17. DOI: 10.1016/j.dnarep.2004.03.004. View