PHARMACEUTICAL COMPOSITION FOR TREATMENT OF TUMOR OR CANCER, AND APPLICATION THEREOF

Provided are a pharmaceutical composition for treatment of a tumor or cancer, and an application thereof. The pharmaceutical composition comprises an oncolytic rhabdovirus and a small molecule CD38 inhibitor such as rhein that are administered via direct local injection or systemic administration or intratumoral delivery. The oncolytic rhabdovirus has the characteristic of recognizing tumor cells and would not cause damage to normal cells. Meanwhile, the small molecule CD38 inhibitor has the activity of specifically inhibiting T-cell receptor molecules. The combined use of the oncolytic rhabdovirus and the small molecule CD38 inhibitor has significant advantages in safety and efficacy.