This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, 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. None
D: None
Answer: D: None 
Explanation: Ans. is 'None' Genetic conditions predisposing to leukemia Down syndrome Diamond-Blackfan anemia Turner syndrome Fanconi syndrome Klinefelter syndrome Neurofibromatosis type 1 Bloom syndrome Schwachman syndrome Paroxysmal nocturnal hemoglobinuria Li-Fraumani syndrome Ataxia - telangiectasia Severe combined immune deficiency