Levels of tumor fucosylation and total and fucosylated HLA-DRB1 in tumor cells were generally higher in anti-PD1 responders than in non-responders from Massachusetts General Hospital (MGH; n = 31; Fig. 7c, top) and the MD Anderson Cancer Center (MDACC; n = 11; Fig. 7c, bottom). Here, HLA-DRB1 is linked to neoplasm.