FN1 and fibronectin glomerulopathy: Ohtsubo et al. subsequently identified six FN1 mutations in 12 families with fibronectin glomerulopathy, including five novel FN1 mutations (p.Pro969Leu, p.Pro1472del, p.Trp1925Cys, p.Lys1953_Ile1961del, and p.Leu1974Pro) [8].