Click to increase image sizeClick to decrease image sizeKEYWORDS: Breast cancerdiagnosticglycosylationN-glycansO-glycans Declaration of interestThe authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties.Reviewers disclosurePeer reviewers on this manuscript have no relevant financial relationships or otherwise to disclose.Additional informationFundingThis work was supported by the National Science Foundation of China (No. 31971211, 82172828), Science Foundation for Distinguished Young Scholars of Shaanxi Province (2021JC-39), the Natural Science Foundation of Shaanxi Province (2021SF-294), and the Youth Innovation Team of Shaanxi Universities.