Deletion of the steroid-binding domain of the human androgen receptor gene in one family with complete androgen insensitivity syndrome: Evidence for further genetic heterogeneity in this syndrome
- Johns Hopkins Univ. School of Medicine, Baltimore, MD (USA)
The cloning of a cDNA for the human androgen receptor gene has resulted in the availability for cDNA probes that span various parts of the gene, including the entire steroid-binding domain and part of the DNA-binding domain, as well as part of the 5' region of the gene. The radiolabeled probes were used to screen for androgen receptor mutations on Southern blots prepared by restriction endonuclease digestion of genomic DNA from human subjects with complete androgen insensitivity syndrome (AIS). In this investigation, the authors considered only patients presenting complete AIS and with the androgen receptor (-) form as the most probably subjects to show a gene deletion. One subject from each of six unrelated families with the receptor (-) form of complete AIS and 10 normal subjects were studied. In the 10 normal subjects and in 5 of the 6 patients, identical DNA restriction fragment patterns were observed with EcoRI and BamHI. Analysis of other members of this family confirmed the apparent gene deletion. The data provide direct proof that complete AIS in some families can result from a deletion of the androgen receptor structural gene. However, other families do not demonstrate such a deletion, suggesting that point mutations may also result in the receptor (-) form of complete AIS, adding further to the genetic heterogeneity of this syndrome.
- OSTI ID:
- 5546694
- Journal Information:
- Proceedings of the National Academy of Sciences of the United States of America; (USA), Vol. 85:21; ISSN 0027-8424
- Country of Publication:
- United States
- Language:
- English
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550401* - Genetics- Tracer Techniques