Abstract:
:The ATM gene is responsible for the autosomal recessive disorder ataxia-telangiectasia (A-T), characterized by cerebellar degeneration, immunodeficiency and cancer predisposition. A-T carriers were reported to be moderately cancer-prone. A wide variety of A-T mutations, most of which are unique to single families, were identified in various ethnic groups, precluding carrier screening with mutation-specific assays. However, a single mutation was observed in 32/33 defective ATM alleles in Jewish A-T families of North African origin, coming from various regions of Morocco and Tunisia. This mutation, 103C-->T, results in a stop codon at position 35 of the ATM protein. In keeping with the nature of this mutation, various antibodies directed against the ATM protein failed to defect this protein in patient cells. A rapid carrier detection assay detected this mutation in three out of 488 ATM alleles of Jewish Moroccan or Tunisian origin. This founder effect provides a unique opportunity for population-based screening for A-T carriers in a large Jewish community.
journal_name
Hum Mol Genetjournal_title
Human molecular geneticsauthors
Gilad S,Bar-Shira A,Harnik R,Shkedy D,Ziv Y,Khosravi R,Brown K,Vanagaite L,Xu G,Frydman M,Lavin MF,Hill D,Tagle DA,Shiloh Ydoi
10.1093/hmg/5.12.2033subject
Has Abstractpub_date
1996-12-01 00:00:00pages
2033-7issue
12eissn
0964-6906issn
1460-2083pii
6d0163journal_volume
5pub_type
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