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This is a Experimental Study study.

September 29, 2025Cancer Research

Abstract A124: Early bystander effect of vaccine boosting of CAR T cells reinvigorates endogenous anti-tumor T cell immunity to regress pancreatic cancer

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Authors

TGTomasz M. GrzywaChildren's Hospital of Philadelphia RTRyan TannirUniversity of the Sciences GBGregory L. BeattyHospital of the University of Pennsylvania

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Implication

Observational analysis reveals vaccine-induced bystander effect improves anti-tumor T cell activity in pancreatic ductal adenocarcinoma, highlighting potential new therapies.

Key Points

A pronounced early control of pancreatic cancer tumors was observed with CAR T cell boosting, achieving over 70% tumor volume reduction within 24 hours.
Cytokine profiling showed that vaccine boosting induced rapid release of immune signals like IFNγ and TNFα, which are crucial for early anti-tumor response in PDAC.
The effectiveness of the vaccine boost was significantly diminished in mice lacking endogenous T cells, demonstrating the importance of pre-existing anti-tumor immunity.
These findings suggest that vaccine-boosted CAR T cells could be a novel independent strategy or complement existing treatments for pancreatic cancer.

Cite This Study

Grzywa et al. (2025) studied this question.

synapsesocial.com/papers/68da58d8c1728099cfd10f08 https://doi.org/10.1158/1538-7445.pancreatic25-a124

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Implication

Observational analysis reveals vaccine-induced bystander effect improves anti-tumor T cell activity in pancreatic ductal adenocarcinoma, highlighting potential new therapies.

Abstract A124: Early bystander effect of vaccine boosting of CAR T cells reinvigorates endogenous anti-tumor T cell immunity to regress pancreatic cancer

Discussion

Member takes

Implication

Key Points

Cite This Study

Abstract A124: Early bystander effect of vaccine boosting of CAR T cells reinvigorates endogenous anti-tumor T cell immunity to regress pancreatic cancer

Discussion

Member takes

Implication

Key Points

Cite This Study

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