FPR2 and astrocytoma (excluding glioblastoma): In fact, invasion of ovarian cancer cells requires FPR2 activation by the cathelicidin LL-37 [34], the Hp(2-20) peptide, that efficiently binds FPR2, promotes the migration and proliferation of gastric cancer cells [35] and ANXA1 stimulates the development and progression of astrocytoma [36].