- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03712488
Differential Expression of CD200 in B-chronic Lymphoproliferative Disorders by Multicolour Flow Cytometry
The investigator's goals in this study are to assess :
- Differential expression of CD200 by using flow cytometric immune-phenotyping in broad range of patients with B-chronic lymphoproliferative disorders (B-CLPD)
- Role of CD200 in diagnosis , classification and potential value in differential diagnosis
- CD200 expression level at different anatomic sites
Study Overview
Detailed Description
B-Chronic lymphoproliferative disorders (B-CLPDs) are heterogeneous group of disorders with variable clinical presentations and outcomes. They are classified into : chronic lymphocytic leukaemia (CLL), B-cell prolymphocytic leukaemia (B-PLL), hairy cell leukaemia (HCL), and mantle cell lymphoma (MCL), marginal zone lymphoma (MZL), follicular lymphoma (FL) and lymphoplasmacytic lymphoma/WaldenstrÖm macroglobulinaemia (LPL/WM) in leukaemia phase.
Characterization of CLPDs by immunophenotyping (IPT) has become an important and widely used method in hematology. Immunophenotyping is indispensable for the diagnosis of B-CLPDs through recognition of restricted light chain expression and characteristic phenotypes of separate entities.
Immunophenotypic characterization of lymphoid neoplasms is important for diagnosis, sub-classification, and staging and can also play a role in monitoring minimal residual disease. However, the differential diagnosis may be difficult to resolve in some cases, for example, between B-cell neoplasms with full or partial CD5 expression.
CD200 has recently been identified as a potentially useful antigen for flow cytometric immunophenotyping of lymphoid neoplasms, particularly those of the B lineage.
CD200 belongs to the immunoglobulin superfamily and is composed of a light chain-like structure with two extracellular variable- and constant-like domains followed by a transmembrane segment and a cytoplasmic tail.5 CD200 is expressed by various cell types, including B cells, a subset of T cells (including activated T cells), thymocytes, endothelial cells, and neurons .
CD200 generates an immunosuppressive signal by binding to its cognate receptor, CD200 receptor 1 (CD200R1) , which is expressed specifically in granulocytes and monocytes and in a subset of T cells. CD200 appears to play a role in the regulation of antitumor activity and these findings are the basis for ongoing clinical trials using anti-CD200 therapy for chronic lymphocytic leukemia (CLL)
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Contact
- Name: menna M atef, resident
- Phone Number: 01025536683
- Email: menna.abdelaziz9193@gmail.com
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- All newly diagnosed patients with B-chronic lymphoproliferative disorders
Exclusion Criteria:
- 1) Patient refusal 2) Patients diagnosed T-cell non-hodgkins lymphoma 3) Patients receiving chemo and/or radiotherapy 4) Patients on steroid therapy for any other cause 5) Patients receiving any immunosuppressive drugs
Study Plan
How is the study designed?
Design Details
- Observational Models: Cohort
- Time Perspectives: Prospective
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Differential expression of CD200 by using flow cytometric immune-phenotyping in B-chronic lymphoproliferative disorders (B-CLPD)
Time Frame: baseline
|
Analysis of expression of CD200 in B-CLPDs for differential diagnosis of subtypes of B-CLPDs
|
baseline
|
Collaborators and Investigators
Sponsor
Investigators
- Study Director: douaa M Sayed, professor, South Egypt Cancer Institute
Publications and helpful links
General Publications
- Ugo V, Leporrier N, Salaun V, Letestu R, Radford-Weiss I, Ramond S, Nataf J, Guesnu M, Picard F, Brouzes C, Perrot JY, Valensi F, Levy V, Ajchenbaum-Cymbalista F, Troussard X. Deciphering leukemic B-cell chronic lymphoproliferative disorders. Leuk Lymphoma. 2006 Oct;47(10):2088-95. doi: 10.1080/10428190600727939.
- Schlette E, Fu K, Medeiros LJ. CD23 expression in mantle cell lymphoma: clinicopathologic features of 18 cases. Am J Clin Pathol. 2003 Nov;120(5):760-6. doi: 10.1309/XV4A-G7EM-WQU7-ER67.
- Baseggio L, Traverse-Glehen A, Petinataud F, Callet-Bauchu E, Berger F, Ffrench M, Couris CM, Thieblemont C, Morel D, Coiffier B, Salles G, Felman P. CD5 expression identifies a subset of splenic marginal zone lymphomas with higher lymphocytosis: a clinico-pathological, cytogenetic and molecular study of 24 cases. Haematologica. 2010 Apr;95(4):604-12. doi: 10.3324/haematol.2009.011049. Epub 2009 Dec 16.
- Challagundla P, Medeiros LJ, Kanagal-Shamanna R, Miranda RN, Jorgensen JL. Differential expression of CD200 in B-cell neoplasms by flow cytometry can assist in diagnosis, subclassification, and bone marrow staging. Am J Clin Pathol. 2014 Dec;142(6):837-44. doi: 10.1309/AJCPBV9ELXC0ECVL.
- Rygiel TP, Karnam G, Goverse G, van der Marel AP, Greuter MJ, van Schaarenburg RA, Visser WF, Brenkman AB, Molenaar R, Hoek RM, Mebius RE, Meyaard L. CD200-CD200R signaling suppresses anti-tumor responses independently of CD200 expression on the tumor. Oncogene. 2012 Jun 14;31(24):2979-88. doi: 10.1038/onc.2011.477. Epub 2011 Oct 24.
Study record dates
Study Major Dates
Study Start (Anticipated)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- flow cytometry in neoplasms
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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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