Block, expose, and immunize: triple attack on cancer.

Preventing metastasis remains a major challenge in cancer therapy. Effective strategies should combine immune activation with the inhibition of cancer cell migration and invasion. In this Opinion article, we propose a multimodal approach that integrates migrastatic agents with photodynamic therapy (PDT) and intratumoral immunotherapy (ITI). Migrastatics inhibit cell motility and may reduce the risk of tumor cell dissemination. PDT promotes immunogenic cell death and enhances immune recognition while minimizing damage to healthy tissues. ITI delivers immune stimulants directly into tumors to stimulate local immune responses. This therapeutic strategy could suppress cancer cell plasticity, limit metastasis, and activate antitumor immunity, potentially improving outcomes in cancers prone to early invasion. This comprehensive approach is discussed in the context of current clinical practice.