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INBDE Integrated National Board Dental Exam Prep Set 2

Category - NBDE II

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Pierre Robin syndrome is a mutation of what gene:
  1. Collagen gene 2A1
  2. Collagen gene 2A2
  3. Fibroblast gene 43
  4. Trisomy 21
Explanation
Answer: A - Pierre Robin syndrome is a mutation of collagen gene 2A1. The syndrome leads to micrognathia and glossoptosis - small mandible and tongue retraction. There are breathing and feeding difficulties due to high arched cleft palate. Additional symptoms are mitral valve prolapsed and hypermobility of joints.
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