By using an in vivo migration assay, the authors showed that ovarian cancer-derived LL-37 functions as a chemoattractant for the migration of MSCs into multiple metastatic tumors in the peritoneal cavity; by contrast, the neutralization of LL-37 significantly inhibits the recruitment of MSCs in ovarian cancer tissues, thus resulting in the suppression of metastatic tumor growth. This evidence concerns the gene CAMP and metastatic neoplasm.