Body Systems Affected
The kidneys are the organs affected.
So the systems affected are the immune (because the antibodies of the immune system are affected) and the excretory system (the system for removing waste out of the body).
The connection between some of these systems that include this disorder is the relationship with the digestive system. One of the symptoms of is loss of appetite that affects the digestive and its distribution of vitamins and minerals. Another connection is the cardiovascular because if left untreated kidney disease can affect the heart.