This is a single arm, open-label, uni-center, phase I/II study to determine the safety and efficacy of an experimental therapy called BinD19 cells in childhood patients with B-cell acute lymphoblastic leukemia or lymphoma, who are chemo-refractory, relapsed after allogeneic SCT, or are otherwise ineligible for allogeneic stem cell transplant.

Inclusion Criteria:

• Male and female subjects with CD19+ B cell malignancies in patients with no available curative treatment options (such as autologous or allogeneic SCT) who have limited prognosis (several months to < 2 year survival) with currently available therapies will be enrolled.
• CD19+ leukemia or lymphoma
• Not eligible for allogeneic SCT because of age, comorbid disease, or lack of available family member or unrelated donor
• Follicular lymphoma, previously identified as CD19+:
• Disease responding or stable after most recent therapy (chemotherapy, MoAb, etc)
• ECOG result is 0, 1 or 2.
• With normal heart, liver and kidney functions.
• Negative serum DNA for EBV and CMV; negative antigen for HBV; negative serum antibody for HCV, HIV and syphilis.
• Negative in pregnancy test (female subject only).

Exclusion Criteria:

• ECOG result is 3, 4 or 5.
• Pregnant or lactating female
• Uncontrolled active infection
• Active hepatitis B or hepatitis C infection
• Concurrent use of systemic steroids. Recent or current use of inhaled steroids is not exclusionary
• Previously treatment with any gene therapy products
• HIV infection
• Enrolled to other clinical study in the last 4 weeks.
• Subjects with systemic auto-immune disease or immunodeficiency.
• Subjects with CNS diseases.
• Subjects with secondary tumors.
• Subjects with tumor infiltration in liver, brain or GI tract.