IgA nephropathy, a type of chronic glomerulonephritis, does not transmit through sexual intercourse. This condition involves a sterile inflammatory response within the glomeruli of the kidneys, not caused by pathogens such as bacteria, viruses, or fungi. Instead, it results from an immune dysfunction, causing inflammation in the glomeruli without any infectious agents. Therefore, IgA nephropathy is not contagious, and sexual intercourse does not pose a risk of transmitting the condition to a sexual partner. As such, patients with IgA nephropathy can engage in sexual activities if their physical condition permits.