A 17-year-old boy with deafness and near-blind vision is referred to a research nephrologist by his primary care doctor, who is concerned about the microscopic hematuria discovered during a routine...

A 17-year-old boy with deafness and near-blind vision is referred to a research nephrologist by his primary care doctor, who is concerned about the microscopic hematuria discovered during a routine physical exam. His father was also deaf but was adopted, so no other family history is available. This nephrologist has easy access to electron microscopy and finds splitting of a thick GBM. What is the likely diagnosis?

A. Good pasture syndrome

B. Alport syndrome

C. Berger syndrome (IgA nephropathy)

D. Type IV lupus GN

E. Type I membranoproliferative GN