CD79A and systemic lupus erythematosus: This is in contrast toan earlier study on 198 patients who tested positive for IgA anti-β2GPIrecruited from three multi-ethnic cohorts where around 40% of participants wereAfrican Americans: the ‘Lupus in Minorities: Nature vs. Nurture’ (LUMINA) cohort,the Hopkins Lupus cohort and the Antiphospholipid Standardization laboratory cohort.In that study, isolated IgA antibodies were associated with arterial as well as any thromboses.43