For lupus nephritis, the complicated findings include a small correlation between nephritis and several intronic MYH9 polymorphisms among European-Americans [15], a correlation with a different MYH9 polymorphism among the Gullah [15], and no correlation with lupus nephritis and polymorphisms in either MYH9 or APOL1 among African-Americans [15], [16]. The gene discussed is APOL1; the disease is lupus nephritis.