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Genetic Study of Chronic Lymphocytic Leukemia Families

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: NCT00503256
Recruitment Status : Active, not recruiting
First Posted : July 18, 2007
Last Update Posted : May 9, 2019
National Cancer Institute (NCI)
Mayo Clinic
Information provided by (Responsible Party):
M.D. Anderson Cancer Center

Brief Summary:

The goal of this research is to identify genes that may be related to the risk of developing CLL.


The objective of this study to investigate possible candidate susceptibility genes for familial chronic lymphocytic leukemia (CLL) by identifying and recruiting high-risk families. Through our ongoing study of familial aggregation in CLL kindreds (protocol 2003-0498 'Genetic Study of Chronic Lymphocytic Leukemia'), we have identified CLL patients who have one or more living or dead relative(s) affected with CLL or other leukemias or lymphomas. We will also identify patients in high-risk families from referrals from leukemia clinicians and from self-referrals from patients who learn about our study from the website. We plan to invite probands (patients diagnosed with CLL) and their family members with other leukemias and lymphomas and a sample of unaffected relatives to participate in a genetic/linkage study. We will obtain demographic and clinical information along with specimens (blood or buccal samples) from all participants. These families will be part of the Genetic Epidemiology of CLL Consortium, a multicenter, multidisciplinary consortium, based at the Mayo Clinic Cancer Center under the direction of Susan Slager, PhD. This is funded from NCI through a subcontract with Mayo Clinic.

Genotypic data will be analyzed at Mayo Clinic, and coded, de-identified data will be shared with the NIH Genome-Wide Association Studies (GWAS) data repository.

Condition or disease Intervention/treatment
Leukemia Behavioral: Questionnaire

Detailed Description:

This study does not involve taking any medications.

You will be asked to provide study personnel with authorization to request medical records from your physician, the hospital, and/or from other health care facilities where you were diagnosed with cancer. The information gathered will be used to help verify the diagnosis. Study personnel may also need to contact you in the future by phone, mail, or e-mail in order to ask questions about the status of your health.

For this research study, you will be asked to have around 4 tablespoons of blood drawn from a vein in your arm or you will also be asked to provide a sample of cheek cells by spitting into a collection container. The blood and cheek cell samples will be used for special tests to look for genes that may play a role in the development of CLL. You will also be asked to complete a family history questionnaire and a risk factor questionnaire. The family history questionnaire and the risk factor questionnaire will each take 60 minutes to complete. You will need to contact your family members before you send the completed family history questionnaire back to the study staff. You must ask for their permission to send the study staff their contact information. Family members with CLL or other leukemias or lymphomas, as well as a sample of your unaffected family members, will then be contacted by study personnel about participating in the study.

If you live in Houston, or the surrounding area, study personnel can arrange to collect the samples at the time and place of your convenience. If you do not live in the Houston area, sample collection instructions and supplies will be mailed to you. The blood sample may be drawn at your doctor's office, or at a clinic or hospital of your choice. All mailing costs will be paid by the study. No travel to M. D. Anderson will be required.

All blood and cheek cells collected will only be used by researchers involved in this study. Genetic information from the analysis of your blood and cheek cells will be included in a repository of genetic information at the National Institutes of Health, but no personal identifying information will be sent. All information will be kept confidential. Neither you nor your doctor will receive the results of these tests and they will NOT be put in your medical record.

This is an investigational study. Up to 450 participants will be enrolled by M. D. Anderson researchers. A total of 4000 participants will be enrolled in this multicenter study.

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Study Type : Observational
Estimated Enrollment : 4000 participants
Observational Model: Case-Control
Time Perspective: Prospective
Official Title: Genetic Study of Chronic Lymphocytic Leukemia Families
Actual Study Start Date : September 2003
Estimated Primary Completion Date : September 2019
Estimated Study Completion Date : September 2019

Group/Cohort Intervention/treatment
CLL - Linkage Families
Gene identification related to Chronic lymphocytic leukemia (CLL) development
Behavioral: Questionnaire
Questionnaires each taking 60 minutes to complete.
Other Name: Survey

Primary Outcome Measures :
  1. Candidate susceptibility genes for familial chronic lymphocytic leukemia (CLL) [ Time Frame: Data collection over 6 years ]

Biospecimen Retention:   Samples With DNA
Blood and cheek cell sample collection that will be used for special tests to look for genes that may play a role in the development of CLL.

Information from the National Library of Medicine

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, Learn About Clinical Studies.

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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 chronic lymphocytic leukemia (CLL) and their living unaffected or affected relatives.

Inclusion Criteria:

  1. Patients with histologically confirmed CLL who have living or dead relatives affected with CLL. They must agree to complete a risk factor questionnaire and a family history questionnaire, and to donate a 50mL blood specimen or a buccal specimen.
  2. Relatives of the CLL patients who have CLL or other lymphoproliferative disorders (i.e., leukemia & lymphoma). They must agree to complete a risk factor questionnaire and donate a 50mL blood specimen or a buccal specimen. They will need to sign an authorization to release their medical records so that we can confirm their diagnosis.
  3. A sample of unaffected relatives of the CLL patients. They must agree to complete a risk factor questionnaire and donate a 50mL blood specimen or a buccal specimen.

Exclusion Criteria:

1) No exclusion criteria

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): NCT00503256

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United States, Texas
University of Texas MD Anderson Cancer Center
Houston, Texas, United States, 77030
Sponsors and Collaborators
M.D. Anderson Cancer Center
National Cancer Institute (NCI)
Mayo Clinic
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Principal Investigator: Alessandra Ferrajoli, MD, BS M.D. Anderson Cancer Center
Study Director: Susan Slager, Ph.D. Mayo Clinic
Additional Information:
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Responsible Party: M.D. Anderson Cancer Center Identifier: NCT00503256    
Other Study ID Numbers: ID03-0117
First Posted: July 18, 2007    Key Record Dates
Last Update Posted: May 9, 2019
Last Verified: May 2019

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by M.D. Anderson Cancer Center:
Chronic Lymphocytic Leukemia
Additional relevant MeSH terms:
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Leukemia, Lymphoid
Leukemia, Lymphocytic, Chronic, B-Cell
Neoplasms by Histologic Type
Lymphoproliferative Disorders
Lymphatic Diseases
Immunoproliferative Disorders
Immune System Diseases
Leukemia, B-Cell