CXCR7, CXCR4, CXCL12, CXCL14 and CXCR4 isoforms are expressed in Ewing sarcoma.
CXCR4-1/CXCR4-2 isoform ratio and CXCL14 and CXCR7 associate with improved survival.
CXCR4 and CXCL12 mRNA expression are not associated with survival in Ewing sarcoma.
Factors mitigating CXCR4 activation predict better clinical outcomes.