JOURNAL ARTICLE
REVIEW

Eleven Polish patients with microcephaly, immunodeficiency, and chromosomal instability: the Nijmegen breakage syndrome

K H Chrzanowska, W J Kleijer, M Krajewska-Walasek, M Białecka, A Gutkowska, B Goryluk-Kozakiewicz, J Michałkiewicz, J Stachowski, H Gregorek, G Lysón-Wojciechowska
American Journal of Medical Genetics 1995 July 3, 57 (3): 462-71
7545870
We report on 11 patients from 8 independent families (3 pairs of sibs) with a complex clinical pattern including microcephaly, peculiar "bird-like" face, growth retardation, and, in some cases, mild-to-moderate mental deficiency. Most of the patients have recurring respiratory tract infections. One girl has developed B-cell lymphoma. A detailed anthropometric study of 15 physical parameters, including 3 cephalic traits, was performed. It was possible to study the chromosomes of PHA-stimulated lymphocytes in all of the patients. We found structural aberrations with multiple rearrangements, preferentially involving chromosomes 7 and 14 in a proportion of metaphases in all individuals. Profound humoral and cellular immune defects were observed. Serum AFP levels were within normal range. Radioresistant DNA synthesis was strongly increased in all 8 patients who were hitherto studied in this respect. Our patients fulfill the criteria of the Nijmegen breakage syndrome, which belongs to the growing category of ataxia telangiectasia-related genetic disorders. In light of the increased predisposition to malignancy in this syndrome, an accurate diagnosis is important for the patient.

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