The Study on the Mechanism of Radiotherapy-elicited Immune Response

Recruiting now

Conditions studied: Esophageal Carcinoma Salivary Gland Type, Radiotherapy

In brief

Radiotherapy plays an important role in multidisciplinary treatment of esophageal cancer. Data from many laboratories indicate that local radiation produces systemic, immune-mediated anti¬tumour and, potentially, antimetastatic effects. Additionally, the combination of local radiotherapy and immune-modulation can augment local tumour control and cause distant (abscopal) antitumour effects through increased tumour-antigen release and antigen-presenting cell (APC) cross-presentation, improved dendritic-cell (DC) function, and enhanced T cell priming. The generation of an effective antitumor immune response requires the presentation of tumor antigens to naïve CD8+ cells in tumor-draining lymph nodes (TDLN) . Tumor-draining lymph nodes, however, are often subject to the immunosuppressive activity of tumor-derived factors, such as cytokines and other bioactive molecules from tumor cells and their associated leukocytes in the primary tumor site that contribute to the overriding of effective rejection mechanisms. Thus, in TDLN a T cell tolerance rather than a T cell activation often occurs, thereby preventing immune attack and facilitating local tumor progression.

Key facts

Study ID

NCT06393140

Run by

Fudan University

People needed

200

Starts

2022-07-01

Expected to finish

2026-07-31

Last updated by the study team

2024-08-26

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• new diagnosis locoregional esophageal cancer;
• pathologic diagnosis is squamous carcinoma;
• Patients had received either neoadjuvant or definitive radiotherapy
• tumor and lymph node tissue can be collected and can be conducted with single cell RNA (scRNA)-sequencing and other sequencings.

You may not qualify if…

• Pregnant or lactating women.
• Unable or rejection to receive radiotherapy or unable to comply with study requirements or follow-up schedule.
• Inability to provide informed consent.

Where it is running

• Fudan University Shanghai cancer center — Shanghai, China (enrolling)

Full record on ClinicalTrials.gov

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