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Study of Proteins in Promoting Chemotherapy Resistance in Samples From Patients With Acute Myeloid Leukemia

The recruitment status of this study is unknown because the information has not been verified recently.
Verified October 2011 by National Cancer Institute (NCI).
Recruitment status was  Active, not recruiting
Information provided by:
National Cancer Institute (NCI) Identifier:
First received: August 17, 2011
Last updated: October 4, 2011
Last verified: October 2011

RATIONALE: Studying samples of tissue from patients with cancer in the laboratory may help doctors learn more about cancer and development of drug resistance in patients.

PURPOSE: This research trial is studying proteins that may promote chemotherapy resistance in samples from patients with acute myeloid leukemia.

Condition Intervention
Genetic: protein expression analysis
Other: flow cytometry
Other: laboratory biomarker analysis

Study Type: Observational
Official Title: Identifying Stat3-Dependent Chemotherapy Resistance Pathways in Relapsed AML

Resource links provided by NLM:

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

Primary Outcome Measures:
  • Changes in Stat3 and Stat5 in paired diagnostic and relapsed AML samples [ Designated as safety issue: No ]
  • Reduction in chemotherapy sensitivity by relapsed samples compared to diagnostic samples [ Designated as safety issue: No ]

Estimated Enrollment: 40
Study Start Date: September 2011
Estimated Primary Completion Date: August 2012 (Final data collection date for primary outcome measure)
Detailed Description:


  • Investigate whether changes in prosurvival signaling occur by comparing activation of the signal transducer and activator of transcription-3 (Stat3) and Stat5 pathways in paired diagnostic and relapse samples.
  • Investigate changes in leukemia cell responses to extrinsic cues from the environment change, using a bone marrow stromal-cell co-culture model of chemotherapy resistance.

OUTLINE: Cryopreserved samples are analyzed for Stat3 and Stat5 expression by flow cytometry and in vitro chemotherapy sensitivity.


Ages Eligible for Study:   up to 30 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No


  • Paired diagnostic and relapsed cryopreserved samples from patients with acute myeloid leukemia


  • 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: NCT01419496

Sponsors and Collaborators
Children's Oncology Group
Principal Investigator: Michele S. Redell, MD, PhD Texas Children's Cancer Center
  More Information

Additional Information:
No publications provided

Responsible Party: Peter C. Adamson, Children's Oncology Group - Group Chair Office Identifier: NCT01419496     History of Changes
Other Study ID Numbers: CDR0000709080, COG-AAML12B1
Study First Received: August 17, 2011
Last Updated: October 4, 2011
Health Authority: United States: Federal Government

Keywords provided by National Cancer Institute (NCI):
recurrent adult acute myeloid leukemia
recurrent childhood acute myeloid leukemia
adult acute myeloid leukemia with 11q23 (MLL) abnormalities
adult acute myeloid leukemia with inv(16)(p13;q22)
adult acute myeloid leukemia with t(15;17)(q22;q12)
adult acute myeloid leukemia with t(16;16)(p13;q22)
adult acute myeloid leukemia with t(8;21)(q22;q22)
adult acute myeloid leukemia with del(5q)

Additional relevant MeSH terms:
Leukemia, Myeloid
Leukemia, Myeloid, Acute
Neoplasms by Histologic Type processed this record on November 27, 2014