The scarce data regarding other cancers have indicated a negative association of ACKR2 protein expression in tumors with TNM stage in breast [27] and gastric cancer [28], lymph node metastasis in breast cancer [27,29], tumor size in cervical cancer [26], histological grade in gastric cancer [28], and with the recurrence of cervical cancer [26]. This evidence concerns the gene ACKR2 and cancer.