Ataxia telangiectasia is chracterised by all of the following except:
Increased levels of a fetoproteins is seen in ataxia telangiectasia. Ref: Harrison's Principles of Internal Medicine, 17th Edition O P Ghai Essential Pediatrics, 6th Edition
Chronic sinopulmonary disease
Decreased level of a-fetoprotein
Chromosomal breakage
IgA deficiency