Diamond Blackfan Anemia Registry (DBAR) (DBAR)
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|ClinicalTrials.gov Identifier: NCT00106015|
Recruitment Status : Recruiting
First Posted : March 21, 2005
Last Update Posted : July 23, 2019
|Condition or disease|
|Anemia Blood Disease|
Diamond Blackfan anemia (DBA) is a heterogeneous genetic disorder characterized by pure red cell aplasia, congenital anomalies, a predisposition to pancytopenia and myelodysplasia as well as hematopoietic and non-hematopoietic cancer. Anemia usually presents in infancy or early childhood and greater than 40% of patients have at least one congenital anomaly. The actuarial cancer risk is, as of yet, undetermined. One DBA gene has been cloned and the existence of at least two other DBA genes has been inferred by linkage analysis. Penetrance and expressivity of DBA genes are highly variable. "Affected" individuals within the same family may vary dramatically as to the degree of anemia, response to corticosteroids, the presence of congenital anomalies and the development of cancer. Despite improvements in understanding of this disorder there are significant deficiencies in knowledge that inhibit the exploitation of this syndrome to increase both specific and general knowledge of mechanisms of hematopoietic failure, birth defects and cancer predisposition. Furthermore this disease will, in the near future, provide a valuable platform to study complex gene interactions. There are less than 1000 individuals in the United States and Canada estimated to have DBA, representing at least 11 genotypes. Thus, no single center follows sufficient numbers of well-characterized patients for meaningful clinical and laboratory investigations. Furthermore, clinicians require an accurate knowledge of the clinical and laboratory presentation, mode of inheritance, treatment response, outcomes and prognosis to make important diagnostic treatment and reproductive decisions. A comprehensive registry that captures this information and characterizes patients accurately is therefore essential to advance our understanding of DBA, and in the process, knowledge regarding hematopoietic cell differentiation, birth defects and cancer predisposition. The registry will be an essential component of clinical and laboratory DBA related research and patient care.
The Diamond Blackfan Anemia Registry (DBAR) was established in 1992, and families were asked to participate if a member was affected by the disorder. From this, the Diamond Blackfan Anemia Foundation (DBAF) was established, largely as a cooperating entity for families to share information. The registry attempts to establish contact with all affected individuals at the time of diagnosis, avoiding the pitfalls of reporting bias inherent to the study of many diseases for which extraordinary events prompt referral to specialized centers. The registry is already capturing a high percentage of the estimated number of new cases per year, and has facilitated genetic studies to define the gene(s) responsible for the disorder. Thus, the registry has an established track record based on funding from non-NIH sources.
The study is in response to RFA HL-04-008 on Molecular Mechanisms Underlying Diamond-Blackfan Anemia and Other Congenital Bone Marrow Failure Syndromes.
The objective of this study is to expand and update the DBAR in order to: 1) facilitate investigations into the epidemiology and biology of Diamond Blackfan anemia; 2) provide an accurate phenotype of DBA patients to facilitate genotype- phenotype correlations; 3) provide access of well characterized patients to treatment protocols; 4) provide patients to access to research studies; 5) provide patients with results of research studies; 6) serve as a resource to patients and their doctors to guide diagnostic, therapeutic, and reproductive decisions.
|Study Type :||Observational|
|Estimated Enrollment :||850 participants|
|Official Title:||Diamond Blackfan Anemia Registry (DBAR)|
|Actual Study Start Date :||September 2004|
|Estimated Primary Completion Date :||April 2021|
|Estimated Study Completion Date :||April 2021|
- Understanding the epidemiology and biology of Diamond Blackfan anemia [ Time Frame: yearly ]Epidemiology
Biospecimen Retention: Samples With DNA
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 ClinicalTrials.gov identifier (NCT number): NCT00106015
|Contact: Eva Atsidaftos, MAfirstname.lastname@example.org|
|United States, New York|
|Cohen Children's Medical Center of NY||Recruiting|
|New Hyde Park, New York, United States, 11040|
|Contact: Eva Atsidaftos, MA 518-562-1504 email@example.com|
|Principal Investigator: Jeffey M Lipton, MD, PhD|
|Sub-Investigator: Adrianna Vlachos, MD|
|Principal Investigator:||Jeffrey M Lipton, MD, PhD||Cohen Children's Medical Center of NY/Feinstein Institutute for Medical Research|
|Study Director:||Adrianna Vlachos, MD||Cohen Children's Medical Center of NY/Feinstein Institute for Medical Research|