This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S., Subject name: Pediatrics
Genetic risk factors for leukemia are all except: 
Select and explain. 
A. Down's syndrome, B. Bloom syndrome, C. Ataxia telangiectasia, D. Turner's syndrome
D: Turner's syndrome
Answer: D: Turner's syndrome 
Explanation: d. Turner's syndrome(Ref: Nelson's 20/e p 2442-2444)Genetic conditions predisposing to leukemia* Down syndrome* Diamond-Blackfan anemia* Turner syndrome (least associated)* Fanconi syndrome* Klinefelter syndrome* Neurofibromatosis type 1* Ataxia - telangiectasia* Severe combined immune deficiency* Bloom syndrome* Schwachman syndrome* Paroxysmal nocturnal hemoglobinuria* Li-Fraumani syndromeNote: All the given conditions are risk factors for leukemia. Out of them Turner syndrome is least associated with leukemia.