Rheumatoid Arthritis Clinical Trial
Official title:
Genetics of Rheumatoid Arthritis: The North American Rheumatoid Arthritis Consortium
Verified date | June 20, 2014 |
Source | National Institutes of Health Clinical Center (CC) |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational |
This study attempts to identify the genes responsible for rheumatoid arthritis (RA), or
inflammation of the joints. It is known that genes play an important role in RA, but their
number and significance have not been determined. RA tends to run in families. This study
will examine the DNA (hereditary material) of patients with RA and their family members to
try to determine which chromosomes(s) contain the genes responsible for the disease.
Patients with rheumatoid arthritis and their family members may be eligible for this study.
Participants with RA who have a brother or sister with RA will undergo the following
procedures:
- Review of their medical records
- Medical history
- Examination of the joints
- Hand X-rays
- Blood tests
Participants who 1) do not have RA but who have a relative with the disease, or 2) have RA
and a relative other than a brother or sister who has the disease will provide a blood sample
or a buccal (cheek) cell sample. Cheek cells are obtained by swishing a small amount of
mouthwash in the mouth or by lightly bushing the inside of the cheek with a swab or brush.
The samples will be tested for rheumatoid factor, DNA studies, and HLA type (a blood type
found on white blood cells). Certain HLA types have been associated with an increased risk or
severity of RA.
Status | Completed |
Enrollment | 39 |
Est. completion date | June 20, 2014 |
Est. primary completion date | |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years and older |
Eligibility |
- INCLUSION CRITERIA: SIBLING PAIR: A diagnosis of rheumatoid arthritis in both sibs by the 1987 ACR criteria. Definite bony erosions in at least one affected sibling. Age of disease onset greater than 18 years and less than 60 years in at least one sibling. Neither sibling has psoriasis, inflammatory bowel disease, or systemic lupus erythematosus. BLOOD RELATIVES OF AFFECTED SIBLING PAIRS: Age greater than 18 years. Where possible, all other affected siblings will be invited to participate. Where possible, both parents of affected siblings will be invited to participate. Other relatives, both affected and unaffected, may be invited to participate if, in the opinion of the investigators, samples from these individuals would contribute important genetic information. Two cases in which this might happen are: a) extended families in which there are several affected individuals, where conventional linkage analysis might be applied; b) affected sibling pairs for which parents are unavailable, where additional siblings will provide information on parental alleles not transmitted to the affected siblings. EXCLUSION CRITERIA FOR AFFECTED SIBLINGS: Psoriasis, inflammatory bowel disease, systemic lupus erythematosus. Inability to provide infomed consent. The sole criterion for exclusion of adult blood relatives of affected sibling pairs would be inability to provide informed consent. |
Country | Name | City | State |
---|---|---|---|
United States | National Institutes of Health Clinical Center, 9000 Rockville Pike | Bethesda | Maryland |
Lead Sponsor | Collaborator |
---|---|
National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) | National Human Genome Research Institute (NHGRI) |
United States,
Harris ED Jr. Rheumatoid arthritis. Pathophysiology and implications for therapy. N Engl J Med. 1990 May 3;322(18):1277-89. Review. Erratum in: N Engl J Med 1990 Oct 4;323(14):996. — View Citation
Lawrence RC, Hochberg MC, Kelsey JL, McDuffie FC, Medsger TA Jr, Felts WR, Shulman LE. Estimates of the prevalence of selected arthritic and musculoskeletal diseases in the United States. J Rheumatol. 1989 Apr;16(4):427-41. — View Citation
Stastny P. Association of the B-cell alloantigen DRw4 with rheumatoid arthritis. N Engl J Med. 1978 Apr 20;298(16):869-71. — View Citation
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