The remaining findings (oligomeganephronia combined with atypical membranous nephropathy, and mesangial proliferative glomerulonephritis) may be due to the younger age at renal biopsy or the diversity of pathological results with PAX2 mutation, some of which have been reported (Okumura et al., 2015; Salomon et al., 2001). This evidence concerns the gene PAX2 and membranous glomerulonephritis.