Because BUN and creatinine (r=0.69), SAPS II and APS III (r=0.69) or OASIS (r=0.68), OASIS and APS III (r=0.62), age and CCI (r=0.59), and chloride and sodium (r=0.66), BUN, SAPS II, OASIS, age, and chloride were excluded in the next step. The gene discussed is SKAP2; the disease is autoimmune polyendocrinopathy.