In six ovarian cancer cell lines (SKOV-3, IGROV, OVCAR-3, CAOV-3, PEO1, and PEO14) the expression of CXCR4 mRNA was demonstrated, but no expression was detected for the other analyzed chemokine receptors (i.e., CCR1, CCR2a, CCR2b, CCR3, CCR4, CCR5, CCR7, CCR8, CXCR1, CXCR2, CXCR3, CXCR5, or CX3CR1) [121] (Figure 8). Here, CXCR4 is linked to ovarian carcinoma.