Finally, EGF‐containing fibulin‐like extracellular matrix protein 1 (EFEMP1), which binds to epidermal growth factor receptor (EGFR) to promote tumor growth, invasion, and metastasis (Yin et al, 2016), showed a threefold increase across seven O‐linked glycosylation sites in tumor tissue (Fig 3D and Appendix Table S1). Here, EGFR is linked to neoplasm.