Factors associated with hypokalemia in univariable logistic regression include age, CVA, COPD, DM, HTN, CHF, CKD, diarrhea, potassium-sparing diuretics, thiazides, sulfonamides, beta-2-adrenoreceptor agonists, xanthines, steroids, and laxatives. The gene discussed is ADRB2; the disease is Hypokalemia.