MCQ – 88187


A 20-year-old man is examined by a new family physician who discovers numerous pigmented patches and pedunculated skin tumors on his chest. Biopsy of a tumor discloses a benign neoplasm derived from Schwann cells. Neither the patient’s father nor mother shows signs of this disease. This patient most likely carries a mutation in a gene that encodes which of the following proteins?


Epidermal growth factor receptor


GTPase activating protein


NF-κB transcription factor

D. Ras protein p21

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