Feldman B M, Zabriskie J B, Silverman E D, Laxer R M
Department of Paediatrics, Hospital for Sick Children, Toronto, Ontario, Canada.
J Pediatr. 1993 Jul;123(1):84-6. doi: 10.1016/s0022-3476(05)81544-6.
Two unrelated patients with a family history of rheumatic fever had isolated, acquired chorea. Both index cases, as well as affected family members, had increased expression of the rheumatic B-cell alloantigen D8/17. This test may help differentiate Sydenham chorea from lupus chorea.