Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
8 participants
OBSERVATIONAL
2007-02-28
2010-10-31
Brief Summary
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Detailed Description
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In normal erythropoiesis, erythroid progenitors differentiate and proliferate in response to stimulation by erythropoietin (Epo). Epo binds to its receptor, EpoR, constitutively expressed at the surface of committed erythroid progenitors and induces homodimerization. This study is designed to evaluate the EpoR cDNA sequence and its level of expression in the clonal erythroid progenitors of MDS patients (in cells stratified for the same degree of erythroid maturation) to determine whether mutations in the EpoR may be responsible for an aberrant Epo signal transduction in MDS. As well as analyze intrinsic erythroid Epo expression to determine whether it differs between normal controls and patients with MDS and perform a microarray analysis of genes associated with Epo signal transduction to determine if MDS patients have abnormal expression of signal transduction proteins.
Conditions
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Keywords
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Study Design
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CASE_CONTROL
PROSPECTIVE
Study Groups
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Affected Group
Adult subjects with the diagnosis of MDS based on the French-American-British classification system.
No interventions assigned to this group
Healthy Controls
Control subjects will be selected using frequency matching on gender and age by decade. That is for each MDS patient a healthy volunteer of the same gender and decade (50-59, 60-69, 70-79, etc) will be selected
No interventions assigned to this group
Eligibility Criteria
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Inclusion Criteria
* Diagnosis of MDS based on the French-American-British classification system (including secondary causes of MDS)
Exclusion Criteria
18 Years
ALL
Yes
Sponsors
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National Institutes of Health (NIH)
NIH
University of Utah
OTHER
Responsible Party
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University of Utah
Principal Investigators
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Josef T Prchal, MD
Role: PRINCIPAL_INVESTIGATOR
University of Utah
Locations
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University of Utah
Salt Lake City, Utah, United States
VA Salt Lake City Health Care System
Salt Lake City, Utah, United States
Countries
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References
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Aul C, Arning M, Runde V, Schneider W. Serum erythropoietin concentrations in patients with myelodysplastic syndromes. Leuk Res. 1991;15(7):571-5. doi: 10.1016/0145-2126(91)90025-o.
Stasi R, Brunetti M, Terzoli E, Abruzzese E, Amadori S. Once-weekly dosing of recombinant human erythropoietin alpha in patients with myelodysplastic syndromes unresponsive to conventional dosing. Ann Oncol. 2004 Nov;15(11):1684-90. doi: 10.1093/annonc/mdh428.
Casadevall N, Durieux P, Dubois S, Hemery F, Lepage E, Quarre MC, Damaj G, Giraudier S, Guerci A, Laurent G, Dombret H, Chomienne C, Ribrag V, Stamatoullas A, Marie JP, Vekhoff A, Maloisel F, Navarro R, Dreyfus F, Fenaux P. Health, economic, and quality-of-life effects of erythropoietin and granulocyte colony-stimulating factor for the treatment of myelodysplastic syndromes: a randomized, controlled trial. Blood. 2004 Jul 15;104(2):321-7. doi: 10.1182/blood-2003-07-2252. Epub 2004 Mar 30.
Solignac M; European Hematology Association. [Epoetin beta, new strategies to optimise the management of anaemia in cancer patients]. Presse Med. 2003 Sep 13;32(29):1385-8. No abstract available. French.
Fontenay-Roupie M, Bouscary D, Guesnu M, Picard F, Melle J, Lacombe C, Gisselbrecht S, Mayeux P, Dreyfus F. Ineffective erythropoiesis in myelodysplastic syndromes: correlation with Fas expression but not with lack of erythropoietin receptor signal transduction. Br J Haematol. 1999 Aug;106(2):464-73. doi: 10.1046/j.1365-2141.1999.01539.x.
Takeshita A, Shinjo K, Naito K, Ohnishi K, Higuchi M, Ohno R. Erythropoietin receptor in myelodysplastic syndrome and leukemia. Leuk Lymphoma. 2002 Feb;43(2):261-4. doi: 10.1080/10428190290006026.
Shinjo K, Takeshita A, Higuchi M, Ohnishi K, Ohno R. Erythropoietin receptor expression on human bone marrow erythroid precursor cells by a newly-devised quantitative flow-cytometric assay. Br J Haematol. 1997 Mar;96(3):551-8. doi: 10.1046/j.1365-2141.1997.d01-2071.x.
McMullin MF, Percy MJ. Erythropoietin receptor and hematological disease. Am J Hematol. 1999 Jan;60(1):55-60. doi: 10.1002/(sici)1096-8652(199901)60:13.0.co;2-v.
Kralovics R, Sokol L, Broxson EH Jr, Prchal JT. The erythropoietin receptor gene is not linked with the polycythemia phenotype in a family with autosomal dominant primary polycythemia. Proc Assoc Am Physicians. 1997 Nov;109(6):580-5.
Kralovics R, Indrak K, Stopka T, Berman BW, Prchal JF, Prchal JT. Two new EPO receptor mutations: truncated EPO receptors are most frequently associated with primary familial and congenital polycythemias. Blood. 1997 Sep 1;90(5):2057-61.
Stopka T, Zivny JH, Stopkova P, Prchal JF, Prchal JT. Human hematopoietic progenitors express erythropoietin. Blood. 1998 May 15;91(10):3766-72.
Sato TN. A new role of lipid receptors in vascular and cardiac morphogenesis. J Clin Invest. 2000 Oct;106(8):939-40. doi: 10.1172/JCI11304. No abstract available.
Other Identifiers
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DK007115-31
Identifier Type: -
Identifier Source: secondary_id
20716
Identifier Type: -
Identifier Source: org_study_id