 In this study, we investigated the prevalence of thin basement membrane nephropathy, TBMN, and its association with other glomerular diseases at St. Louis University Hospital. Over a seven-year period, 634 renal biopsies were reviewed, of which 47, 7.4 percent, were diagnosed with TBMN. Of these, 17, 36.2 percent had TBMN alone, while 30, 63.8 percent had TBMN in combination with other glomerular diseases such as IGN nephropathy, IGN, and focal segmental glomerulus sclerosis, FSGS. We found that the prevalence of IGN was significantly higher in patients with TBMN, 19.1 percent, when compared to all biopsies, 7.7 percent. Additionally, we observed that the majority of TBMN cases were associated with other glomerular diseases, suggesting that TBMN may be a marker of underlying glomerular disease. This article was authored by Rizwan Akhazi and Bahar Bestani. We are article.tv. Links in the description below.