MYH9 and Thrombocytopenia: The specific type of renal pathological damage in MYH9-RD remains undefined, as the MYH9 gene can be expressed in glomerular podocytes and mesangial cells, capillary endothelial cells and renal tubules; therefore, MYH9 variants may cause various types of kidney damage, but due to the fact that patients with the disease often have thrombocytopenia and a high risk of kidney puncture, there are few reports on renal pathological manifestations.