CCL21 and neoplasm: Administration of Cisplatin and CCL21. Effective anticancer responses and a reduction in tumor size are evidenced by CCL21, cisplatin, and the CCL21-cisplatin combination polymer. Additionally, using cisplatin polymer in conjunction with radiation treatment potentially allows patients who have already administered the drug to undergo less radiotherapy. Histopathology revealed no inflammation or evidence of severe cytotoxicity following cisplatin-based polymer therapy and radiation