The PREMIER GMR Core has a searchable database of patient samples from a variety of autoimmune disease cohorts, including RA, lupus, spondyloarthritis, and scleroderma. Biospecimens vary by cohort, but can include serum, plasma, PBMCs, DNA, and/or frozen whole blood. Each stored sample is linked to basic patient demographics and phenotype data. Some of the samples are also linked to previously generated data (e.g. GWAS, methylation, sequencing). Some of the cohorts include control samples.