Louis Bar syndrome is an autosomal recessive disorder characterized by early-onset progressive cerebellar ataxia (difficulty with control of movement), telangiectasias of the eyes and skin, Immunodeficiency mostly thorough lowering of IgA, IgG and IgE levels, chromosomal instability, hyper-sensitivity to ionizing radiation, increased incidence of malignancies (primarily hematologic), raised alpha-fetoprotein levels.
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