<prompt> Ataxia telangiectasia is chracterised by all of the following except:Chronic sinopulmonary diseaseDecreased level of a-fetoproteinChromosomal breakageIgA deficiency  <response>: Increased levels of a fetoproteins is seen in ataxia telangiectasia. Ref: Harrisons Principles of Internal Medicine, 17th Edition O P Ghai Essential Pediatrics, 6th Edition 