Table 1 demonstrates demographic and clinical data by LN status. Notably, all subjects with LN were African-American females. Although significance was limited by small sample size, the point estimates for both serum hepcidin and measured PWV were higher in the subjects with LN. A post-hoc power calculation demonstrated 27% power to detect the observed differences in hepcidin and 45% power to detect the observed differences in PWV, confirming that small sample size limited our ability to detect significant differences. Fig 3 depicts serum hepcidin and PWV by nephritis status. The gene discussed is HAMP; the disease is nephritis.