Molecular Pathology of Cancer · Pathology

Which DNA repair defect is characteristic of Lynch syndrome?

  1. Base excision repair defect
  2. Mismatch repair defect
  3. Nucleotide excision repair defect
  4. Double-strand break repair defect
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Correct answer: Mismatch repair defect

Lynch syndrome is caused by mutations in DNA mismatch repair genes such as MLH1 and MSH2. This leads to microsatellite instability.

Difficulty: Medium Question 8 of 20

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