Studying Samples From Patients With T-Cell Acute Lymphoblastic Leukemia

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01581528
Recruitment Status : Completed
First Posted : April 20, 2012
Last Update Posted : May 18, 2016
National Cancer Institute (NCI)
Information provided by (Responsible Party):
Children's Oncology Group

Brief Summary:

RATIONALE: Studying samples of blood, tissue, and bone marrow from patients with cancer in the laboratory may help doctors identify learn more about biomarkers related to cancer. It may also help doctors to find better ways to treat cancer.

PURPOSE: This research studies samples from patients with T-cell acute lymphoblastic leukemia (T-ALL).

Condition or disease Intervention/treatment
Leukemia Genetic: gene expression analysis Other: cell culture procedure Other: flow cytometry Other: laboratory biomarker analysis Other: metabolic assessment

Detailed Description:


  • Determine the metabolic status and regulation of primary T-cell acute lymphoblastic leukemia (T-ALL) relative to control resting peripheral T cells.
  • Establish the effects of metabolic inhibition on metabolic stress pathways and apoptosis.
  • Determine how metabolic inhibition interacts with chemotherapy or targeted therapy drugs to kill T-ALL cells.

OUTLINE: T-ALL samples cultured alone or with gamma secretase inhibitors (GSI) or PI3K inhibitors are analyzed for metabolic characteristics including glucose transporter 1 (Glut1) expression, mitochondrial mass, phospho-flow for 5' adenosine monophosphate-activated protein kinase (AMPK), acetyl-CoA carboxylase (ACC), and mammalian target of rapamycin (mTOR) by flow cytometry. T-ALL samples and normal CD4+ T cells (control) are also exposed to ± 2-deoxyglucose or ± the glutaminolysis inhibitor media and analyzed for metabolic stress responses over time in particular, AMPK activation, autophagy (immunofluorescence for LC3-II processing), and BCL2-associated X protein (Bak) and Bax activation to indicate apoptosis. These cells (T-ALL and control) are then cultured with cyclophosphamide, dexamethasone, or the B-cell CLL/lymphoma 2 (Bcl-2) inhibitor, ABT-737, to determine cell death over time.

Study Type : Observational
Estimated Enrollment : 15 participants
Observational Model: Case-Only
Time Perspective: Retrospective
Official Title: Metabolic Pathways in T-Cell Acute Lymphoblastic Leukemia (T-ALL)
Study Start Date : April 2012
Actual Primary Completion Date : May 2016

Primary Outcome Measures :
  1. Metabolic status of primary T-ALL
  2. Effects of metabolic inhibition on metabolic stress pathways and apoptosis
  3. Metabolic inhibition interaction with chemotherapy or targeted drugs

Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
patients diagnosed with T-ALL


  • Sample from patients diagnosed with T-ALL
  • Samples from independent healthy donors obtained through the Gulf Coast Regional Blood Center (controls)


  • Not specified


  • Not specified

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01581528

Sponsors and Collaborators
Children's Oncology Group
National Cancer Institute (NCI)
Principal Investigator: Jeffrey C. Rathmell, PhD Duke Cancer Institute

Responsible Party: Children's Oncology Group Identifier: NCT01581528     History of Changes
Other Study ID Numbers: AALL12B5
COG-AALL12B5 ( Other Identifier: )
AALL12B5 ( Other Identifier: Children's Oncology Group )
NCI-2012-00728 ( Registry Identifier: CTRP (Clinical Trial Reporting Program) )
First Posted: April 20, 2012    Key Record Dates
Last Update Posted: May 18, 2016
Last Verified: May 2016

Keywords provided by Children's Oncology Group:
T-cell childhood acute lymphoblastic leukemia
untreated adult acute lymphoblastic leukemia
T-cell adult acute lymphoblastic leukemia
untreated childhood acute lymphoblastic leukemia

Additional relevant MeSH terms:
Precursor Cell Lymphoblastic Leukemia-Lymphoma
Leukemia, Lymphoid
Precursor T-Cell Lymphoblastic Leukemia-Lymphoma
Neoplasms by Histologic Type
Lymphoproliferative Disorders
Lymphatic Diseases
Immunoproliferative Disorders
Immune System Diseases