Case Reports
doi: 10.1212/wnl.58.6.965.
CAG/CTG repeat expansions at the Huntington's disease-like 2 locus are rare in Huntington's disease patients
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- PMID: 11914418
- DOI: 10.1212/wnl.58.6.965
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Case Reports
CAG/CTG repeat expansions at the Huntington's disease-like 2 locus are rare in Huntington's disease patients
Neurology.
.
Abstract
The authors report a large series of patients with Huntington disease (HD)-like phenotype without CAG repeat expansions in the IT15 gene that were screened for the newly identified CAG/CTG expansion in the gene encoding junctophilin-3. Normal alleles in controls had from 8 to 28 repeats. A single patient of North African origin with typical HD carried an allele with 50 uninterrupted repeats, representing approximately 2% of the non-IT15 HD patients tested. Therefore, further genetic heterogeneity is expected in HD.
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