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Review Question - QID 108448

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QID 108448 (Type "108448" in App Search)
A 9-year-old boy is brought to the emergency department for flushing, diarrhea, and itching. He is tall for his age with long and thin limbs and very flexible joints. On physical exam, he appears to have an enlarged thyroid and several small growths are found on his tongue and on his eyelids. Based on clinical suspicion, a biopsy is taken of the enlarged thyroid and Figure A shows the results of congo red stain under polarized light. Mutation of which of the following genes is most likely responsible for this patient's syndrome?
  • A
  • A