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Pathology · Neoplasia
Sample itemWhat tumor suppressor gene is commonly altered in retinoblastoma?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
C. RB gene
The core Neoplasia principle identifies RB gene as the best answer because it most directly explains the biochemical pathway or tissue response described in the stem.
Option by option
A. HBB gene
HBB gene is relevant in another context but is not the best answer here.
B. FBN1 gene
FBN1 gene does not account for the central finding in this sample.
C. RB gene (correct)
Correct. RB gene is supported by the key clue given.
D. CFTR gene
CFTR gene does not match the stated neoplasia mechanism.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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