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B Cell Repertoires in Chronic Lymphocytic Leukemia and Aging

This study is currently recruiting participants.
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Verified November 2016 by Nicholas Chiorazzi, Northwell Health
Information provided by (Responsible Party):
Nicholas Chiorazzi, Northwell Health Identifier:
First received: December 8, 2009
Last updated: November 2, 2016
Last verified: November 2016
B-CLL is the most prevalent leukemia in the Western hemisphere, accounting for ~25% of all leukemia's (1). This disease occurs virtually exclusively in the aging population, with the median age of diagnosis ranging between the mid 60s and the early 70s. Indeed, its occurrence before the age of 50 is quite unusual. This increase in occurrence with age is not unique to B-CLL; rather, it is characteristic several B cell lymphoproliferative disorders (e.g., non-Hodgkin's lymphoma, multiple myeloma). Gender and race also influence the development of B-CLL. Thus, the ratio of men: women is ~2:1 and the prevalence is increased in Caucasians. The rate of occurrence of B-CLL among Asians is significantly lower than for Caucasians and this does not increase with immigration to the West. DNA sequence analyses performed in our laboratory and in those of others indicate that B-CLL cells from unrelated patients share Ig V gene characteristics. These include the use of selected genes, the association of these genes with certain D and JH gene segments that code for unique CDR3 motifs, and the occasional occurrence of highly similar VHDJH + VLJL pairs. In ~50% cases, these rearranged genes are mutated, whereas in the others mutations are infrequent; this difference is related to the VH gene family used by the B-CLL cell.

Chronic Lymphocytic Leukemia

Study Type: Observational
Study Design: Observational Model: Case Control
Time Perspective: Cross-Sectional
Official Title: B Cell Repertoires in Chronic Lymphocytic Leukemia and Aging

Resource links provided by NLM:

Further study details as provided by Nicholas Chiorazzi, Northwell Health:

Primary Outcome Measures:
  • expression of cell surface antigens HLA-DR and CD38+ markers in B-CLL cells compared to normal B-lymphocytes [ Time Frame: samples will be taken at the beginning, week 2, 4,6,8,12,and 24 (for blood), and bone marrow samples at weeks 2 and 6. ]

Biospecimen Description:
Blood cells, tissue

Estimated Enrollment: 1000
Study Start Date: July 1998
Estimated Study Completion Date: January 2019
Estimated Primary Completion Date: January 2019 (Final data collection date for primary outcome measure)
Chronic Lymphocytic Leukemia
Chronic Lymphocytic Leukemia


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Chronic Lymphocytic Leukemia Community Sample

Inclusion Criteria:

  • 18 years of age Patients must be willing to be contacted in the future

Exclusion Criteria:

  • Patients who are known to be anemic, with a hemoglobin <8 PAtients who are known to be infected with HIV
  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: NCT01028430

Contact: Yasmine Kieso, MSCR

United States, New York
Feinstein Institute for Medical Research Recruiting
Manhasset, New York, United States, 11030
Contact: Yasmine Kieso, MSCR   
Principal Investigator: Nicholas Chiorazzi, M.D.         
Sponsors and Collaborators
Northwell Health
Principal Investigator: Nicholas Chiorazzi, MD Northwell Health
  More Information

Responsible Party: Nicholas Chiorazzi, Investigator, The Feinstein Institute for Medical Research, Northwell Health Identifier: NCT01028430     History of Changes
Other Study ID Numbers: 04-046
Study First Received: December 8, 2009
Last Updated: November 2, 2016

Keywords provided by Nicholas Chiorazzi, Northwell Health:
Chronic Lymphocytic Leukemia

Additional relevant MeSH terms:
Leukemia, Lymphoid
Leukemia, Lymphocytic, Chronic, B-Cell
Neoplasms by Histologic Type
Lymphoproliferative Disorders
Lymphatic Diseases
Immunoproliferative Disorders
Immune System Diseases
Leukemia, B-Cell processed this record on September 21, 2017