We performed fluorescent in situ hybridization (FISH) of TEL-AML1 fusion of the marrow samples obtained at diagnosis.     ///    TEL-AML1 fusion was more frequent in the very-low-risk (35%) than in the non-low-risk group (17%) (P=0.03).     ///    Our data support the reported association of TEL-AML1 fusion with a favorable outcome although the risk group had a greater impact.     ///    "Favorable outcome in 20-year follow-up of children with very-low-risk ALL and minimal standard therapy, with special reference to TEL-AML1 fusion.. "    ///    "We studied the prognostic value of TEL-AML1 fusion and a risk factor composed of age, white blood cell count (WBC), lymphomatous features, and hemoglobin level (Hb). "