CXCL1 and plasma cell myeloma: In an analysis of transcriptomic profiles of mesenchymal stromal cells from healthy donors and myeloma patients before and after co-culture with myeloma cell line MM.1S, Garcia-Gomez et al. [44] found that CXCL1, CXCL5, and CXCL6 were activated by the myeloma cells.