Characterization of Proliferating Compartment in B-Cell Patients and in Healthy Aging Subjects

March 2, 2021 updated by: Nicholas Chiorazzi, Northwell Health
By ingesting a non-radioactive and non-toxic compound "heavy water" for 6 weeks, the DNA of newly developed cells in the body of subjects with B-cell chronic lymphocytic leukemia can be labeled and followed by performing routine blood draws at specified time intervals. By using mass spectrometric analysis we can measure how quickly new B-CLL cells are generated in the bone marrow and how quickly they leave the blood, a measure of cell turnover. This will help us to better understand the unique characteristics of this disease process.

Study Overview

Status

Completed

Conditions

Detailed Description

By ingesting a non-radioactive and non-toxic compound "heavy water" for 6 weeks, the DNA of newly developed cells in the body of subjects with B-cell chronic lymphocytic leukemia (B-CLL) can be labeled and followed by performing routine blood draws at specified time intervals. By using mass spectrometric analysis we can measure how quickly new B-CLL cells are generated in the bone marrow and how quickly they leave the blood, a measure of cell turnover. This will help us to better understand the unique characteristics of this disease process.

Study Type

Observational

Enrollment (Actual)

90

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • New York
      • Manhasset, New York, United States, 11030
        • Feinstein Institute for Medical Research

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

Chronic Lymphocytic Luekemia

Description

Inclusion Criteria:

  • 18 years of age,
  • Patients must be willing to contribute the required amount of blood without compromising their well being,
  • Participants must be willing to be contacted in the future.

Exclusion Criteria:

  • Pregnancy,
  • Patients who are known to be anemic, with a hemoglobin < 8,
  • Patients who are known to be infected with HIV.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort
Chronic Lymphocytic Leukemia

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Characterization of the Proliferating Compartment in B-CLL Patients and in Healthy Aging Subjects
Time Frame: 1 year
B-CLL is a dx of accumulation rather than proliferation. Evidence for various forms of clonal evolution suggests that B-CLL clones may be more dynamic than previously assumed. A non-radioactive, stable isotopic labeling method to measure B-CLL cell kinetics in vivo. Subjects drank an aliquot of 2H2O daily for 84 days, and 2H incorporation into the deoxyribose moiety of DNA of their newly divided B-CLL cells, measured by gc/ms, during the labeling period. Birth rates were calculated from the kinetic profiles. Death rates were defined as the difference between calculated birth and growth rates.
1 year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Northwell Health

Investigators

  • Principal Investigator: Nicholas Chiorazzi, MD, Feinstein Institute for Medical Research

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

December 1, 2005

Primary Completion (Actual)

February 12, 2016

Study Completion (Actual)

February 12, 2016

Study Registration Dates

First Submitted

December 10, 2009

First Submitted That Met QC Criteria

April 23, 2010

First Posted (Estimate)

April 27, 2010

Study Record Updates

Last Update Posted (Actual)

March 3, 2021

Last Update Submitted That Met QC Criteria

March 2, 2021

Last Verified

March 1, 2021

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 05-05-096
  • GAC # 0117 (Other Identifier: GAC # 0117)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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