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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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The following have defect in DNA repair mechanism except for:
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The correct answer is  Huntington disease (HD) Autosomal dominant disease It is a prototypes of the polyglutamine trinucleotide repeat expansion diseases. The gene for it is located on chromosome 4p16.3, encodes a 348 kD protein known as huntingtin. Xeroderma Pigmentosum Inherited disorder of DNA repair Diseases with Defects in DNA Repair by Homologous Recombination: Bloom syndrome Ataxia-telangiectasia Fanconi anemia