IDH1 and urinary bladder cancer: In our study, we noted that NRBP1 expression levels were significantly correlated with age, WHO grade, IDH status, and 1p/19q co‐deletion in the univariate analysis, consistent with previous findings showing upregulated NRBP1 expression in diverse cancers, including prostate cancer, bladder cancers, and triple‐negative breast cancers.13, 14, 18