Drug glossary Immunotherapy

Toripalimab Tuoyi

A drug being studied in colorectal cancer trials. It appears in 23 clinical trials.

Intravenous PD-1
See its trials
United States Investigational
European Union Not submitted to the EMA
Spain Not available

What it is

Toripalimab is a humanized monoclonal antibody PD-1 inhibitor used in colorectal cancer treatment, particularly for patients with microsatellite instability-high (MSI-H) or mismatch repair deficient (dMMR) tumors. The drug has shown activity in CRC through combination approaches with other agents including cetuximab, irinotecan, regorafenib, and radiation therapy. Toripalimab targets the PD-1 checkpoint pathway to restore anti-tumor immune responses in colorectal malignancies. Clinical applications include both neoadjuvant settings for localized disease and treatment of metastatic colorectal cancer.

How it works

Toripalimab binds to the programmed death-1 (PD-1) receptor on T lymphocytes, blocking the interaction between PD-1 and its ligands PD-L1 and PD-L2. This blockade prevents the inhibitory signals that tumors use to evade immune surveillance, thereby reactivating cytotoxic T-cell responses against cancer cells.

Molecular targets

Common side effects

FatigueSkin rashPruritusDiarrheaDecreased appetiteNauseaHypothyroidismElevated liver enzymes

Not all are listed, and everyone experiences them differently. If you notice any, tell your care team.