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DNA Analysis of Tissue From Patients With T-Cell Acute Lymphoblastic Leukemia

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified June 2007 by National Cancer Institute (NCI).
Recruitment status was:  Not yet recruiting
National Cancer Institute (NCI)
Information provided by:
National Cancer Institute (NCI) Identifier:
First received: May 9, 2009
Last updated: NA
Last verified: June 2007
History: No changes posted

RATIONALE: Studying samples of tissue from patients with cancer in the laboratory may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer.

PURPOSE: This laboratory study is looking at tissue samples from patients with T-cell acute lymphoblastic leukemia.

Condition Intervention
Genetic: microarray analysis
Genetic: mutation analysis
Other: immunologic technique

Study Type: Observational
Official Title: Molecular Mechanisms of NOTCH Induced Transformation in T-ALL

Resource links provided by NLM:

Further study details as provided by National Cancer Institute (NCI):

Primary Outcome Measures:
  • Transcriptional signatures associated with NOTCH1 mutations in T-cell acute lymphoblastic leukemia (T-ALL) cells
  • Global changes on gene expression resulting from inactivation of NOTCH signaling in T-ALL cells

Estimated Enrollment: 48
Study Start Date: December 2006
Detailed Description:


  • Identify the transcriptional signatures associated with the presence of NOTCH1 mutations in primary T-cell acute lymphoblastic leukemia (T-ALL) cells using oligonucleotide microarrays.
  • Characterize the global changes on gene expression resulting from the inactivation of NOTCH signaling in human T-ALL lymphoblasts.

OUTLINE: This is a multicenter study.

Frozen lymphoblast samples from patients with T-cell acute lymphoblastic leukemia (NOTCH1-mutated and wild type) are assessed for genetic expression profiles and mutations by microarray analysis and activated NOTCH1 protein by western blot analysis.

PROJECTED ACCRUAL: A total of 48 samples from patients will be accrued for this study.


Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No


  • Confirmed diagnosis of T-cell acute lymphoblastic leukemia
  • Frozen lymphoblast samples available

    • NOTCH1-mutated or wild type sample available


  • Not specified


  • Not specified
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00899366

Sponsors and Collaborators
Eastern Cooperative Oncology Group
National Cancer Institute (NCI)
Study Chair: Adolfo A. Ferrando, MD, PhD Herbert Irving Comprehensive Cancer Center
  More Information Identifier: NCT00899366     History of Changes
Other Study ID Numbers: CDR0000529758
Study First Received: May 9, 2009
Last Updated: May 9, 2009

Keywords provided by National Cancer Institute (NCI):
T-cell adult acute lymphoblastic leukemia
T-cell childhood acute lymphoblastic leukemia
untreated adult acute lymphoblastic leukemia
untreated childhood acute lymphoblastic leukemia
recurrent adult acute lymphoblastic leukemia
recurrent childhood acute lymphoblastic leukemia
adult acute lymphoblastic leukemia in remission
childhood acute lymphoblastic leukemia in remission

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 processed this record on March 29, 2017