<prompt> Genetic risk factors for leukemia are all except-Downs syndromeBloom syndromeAtaxia telangiectasiaNone  <response>: 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 