**mRNA COVID-19 Shots May Bolster Effects of Cancer Treatments: Study**
*October 21, 2025 | 12:08 PM ET | Pfizer Inc.*
A new study has found that receiving messenger RNA (mRNA)-based COVID-19 vaccines, such as those from Pfizer/BioNTech and Moderna, could significantly improve the survival rates of patients undergoing a class of oncology drugs known as immunotherapies.
**Key Findings:**
– Receiving mRNA COVID-19 vaccines nearly doubles the survival rates of lung cancer patients who are undergoing immunotherapy, according to a retrospective analysis.
– No survival benefit was observed in patients on immunotherapy who received non-mRNA vaccines for pneumonia or flu.
– Combining mRNA COVID-19 vaccines with cancer immunotherapy could enhance overall survival rates. This approach may even render previously unresponsive tumors responsive to treatment, potentially leading to widespread clinical impact if further confirmed.
These findings highlight a promising intersection between COVID-19 vaccination and cancer treatment, suggesting that mRNA vaccines might play a valuable role beyond infectious disease prevention.
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