IgA Nephropathy. In many parts of the world, IgA nephropathy is the most common form of glomerulonephritis--a disease that damages the tiny filtering units of the kidney, called glomeruli.The damage caused by IgA nephropathy results from abnormal deposits of a protein called IgA in the glomeruli.gA Nephropathy. In many parts of the world, IgA nephropathy is the most common form of glomerulonephritis--a disease that damages the tiny filtering units of the kidney, called glomeruli.
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Fax or mail the form â Download a copy of the following form and fax or mail it to Humana. Grievance/Appeal Request Form Download PDF English. Fax Number: 1-855-251-7594. Mailing Address: Humana Grievances and Appeals P.O. Box 14165 Lexington, KY 40512-4165.