Volume 32, Issue 2 pp. 81-87
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Chromosome studies in IgA-deficient patients

R. D. F. M. Taalman

Corresponding Author

R. D. F. M. Taalman

Departments of Human Genetics and Pediatrics

R. D. F. M. Taalman / T. W. J. Hustinx Department of Human Genetics University of Nijmegen Geert Grooteplein Zuid 10 P. O. Box 9101 6500 NB Nijmegen The NetherlandsSearch for more papers by this author
C. M. R. Weemaes

C. M. R. Weemaes

*University of Nijmegen, Nijmegen, The Netherlands

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T. W. J. Hustinx

T. W. J. Hustinx

Departments of Human Genetics and Pediatrics

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J. M. J. C. Scheres

J. M. J. C. Scheres

Departments of Human Genetics and Pediatrics

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J. M. E. Clement

J. M. E. Clement

Departments of Human Genetics and Pediatrics

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G. B. A. Stoelinga

G. B. A. Stoelinga

*University of Nijmegen, Nijmegen, The Netherlands

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First published: August 1987
Citations: 11

Abstract

Chromosome analysis was performed in 17 children ith IgA-deficiency. In two patients a constitutional structural chromosome abnormality was found. A ring chromosome 22 was seen in one, while in the other a mosaicism of ring chromosome 18/18p+ was observed. Both patients wcre metanlly retarded and showed distinct congénital defects. From ten asymptomatic patients, spontaneous as well as X-ray-induced chromosome instability was investigated. There was no increased spontaneous instability, and also after irradiation the induced chromosome damage was within normal control levels. A relationship between IgA-deficiency and X-ray hypersensitivity, as might be suggested by the frequently occurring coïncidence of radiosensitivi-ty and IgA-deficiency in ataxia teleangiectasia patients, is not established.

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