In a following phase I dose-escalation trial, 21 patients with relapsed or refractory ALL or non-Hodgkin lymphoma (NHL) were either treated with 1 × 106/kg/dose, 3 × 106/kg/dose or the entire CD19 CAR T cell product if the product did not meet the required dosage amounts. This evidence concerns the gene CD19 and non-Hodgkin lymphoma.