HPGDS and diffuse large B-cell lymphoma: To elucidate the role of PGD2 on DLBCL progression, we analyzed the data from GSE31312 and GSE57611 dataset, and found that CRTH2 were closely associated with biological processes involved in DLBCL progression, including cell proliferation, apoptosis, cell cycle, and migration (Fig. 2A, Supplementary Fig. S2).