Juvenile Rheumatoid Arthritis Research Registry

JRA is the most common chronic inflammatory pediatric rheumatic disease. JRA may be related
to a complex genetic trait. It is rare to have two or more affected siblings, or sibpairs,
within one family. The JRA ASP (Affected Sibpair) Registry is a nationwide effort and will
collect information and blood samples from JRA sibpairs and their families. Unaffected
family members (e.g., mother, father, and unaffected children) are also invited to
participate.

Patients and their families may enroll in the registry in one of two ways: patients may
contact the registry directly, or they may be referred to the registry through their
physician. Once the family has qualified to join the registry, the family will be asked to
complete a questionnaire on the medical history of their JRA-affected members. Physicians of
the JRA-affected members will be asked to complete questionnaires about their patients'
conditions. Family members will also be invited to provide a one-time blood sample.
Information collected through the registry will help researchers identify genes involved in
JRA susceptibility.

Inclusion Criteria for Patients and Their Families:

- At least two members of a family diagnosed with juvenile rheumatoid arthritis (JRA)

- Informed consent from the family indicating willingness to participate in the
registry