Immunologic and Genetic Characteristics of Monoclonal Immunoglobulins in Patient With Tuberculosis

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: NCT00173264
Recruitment Status : Unknown
Verified May 2005 by National Taiwan University Hospital.
Recruitment status was:  Recruiting
First Posted : September 15, 2005
Last Update Posted : September 15, 2005
Information provided by:
National Taiwan University Hospital

Brief Summary:
The purpose of this study is to determine whether the monoclonal protein in patients with tuberculosis and monoclonal gammopathy has anti-tuberculous activity, and whether genes coding their monoclonal proteins show characteristic mutations.

Condition or disease
Monoclonal Gammopathy Tuberculosis

Detailed Description:
Monoclonal immunoglobulins arise from abnormal proliferation of a single clone of plasma cells. They are composed of a single light and/or heavy chain class, in contrast to polyclonal immunoglobulins. They may occur in malignant lymphoproliferative diseases, such as multiple myeloma, Waldenstrom’s macroglobulinemia, lymphoma, chronic lymphocytic leukemia, amyloidosis, or more benign conditions such as monoclonal gammopathy of undetermined significance (MGUS). Recently we have observed monoclonal gammopathy occurring in patients with tuberculosis. Whether tuberculous infection plays a role in the production of monoclonal protein, and whether the monoclonal immunoglobulins possess anti-tuberculous activity are unknown. In the current project we plan to study: (1) whether the monoclonal immunoglobulin developed in patients with tuberculosis reacts with tuberculous antigen (using ELISA), and (2) whether the VH gene sequence analysis of such patient shows different mutation patterns (indicating the presence of intraclonal mutation variation) or not. If there is no intraclonal mutation variation, it suggests that the plasma cell clone is not under current exposure to the mutator, and the production of monoclonal gammopathy is probably not related to tuberculous infection. If, however, the VH gene sequence analysis shows the presence of intraclonal mutation variation, it indicates that the plasma cell clone is continuously under the influence of the mutator. In such case the production of monoclonal protein may be related to tuberculous infection.

Study Type : Observational
Enrollment : 30 participants
Observational Model: Defined Population
Observational Model: Natural History
Time Perspective: Longitudinal
Time Perspective: Retrospective
Study Start Date : June 2005
Study Completion Date : June 2005

Information from the National Library of Medicine

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

Inclusion Criteria:

  • Monoclonal Gammopathy with Tuberculosis

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): NCT00173264

Contact: Lina Lee, MD,PhD 886-2-23123456 ext 5359

Department of Laboratory Medicine, National Taiwan Univeristy Hospital Recruiting
Taipei, Taiwan, 100
Contact: Lina Lee, MD, PhD    886-2-23123456 ext 5359   
Sponsors and Collaborators
National Taiwan University Hospital
Principal Investigator: LINA LEE, MD,PhD Department of labrotoary medicine,National Taiwan University Hospital Identifier: NCT00173264     History of Changes
Other Study ID Numbers: 9461700601
First Posted: September 15, 2005    Key Record Dates
Last Update Posted: September 15, 2005
Last Verified: May 2005

Additional relevant MeSH terms:
Monoclonal Gammopathy of Undetermined Significance
Mycobacterium Infections
Actinomycetales Infections
Gram-Positive Bacterial Infections
Bacterial Infections
Blood Protein Disorders
Hematologic Diseases
Immunoproliferative Disorders
Immune System Diseases