How personalized cancer vaccines could keep tumours from coming back
https://www.nature.com/articles/d41586-024-01717-x
NEWS FEATURE
11 June 2024
How personalized cancer vaccines could keep tumours from coming back
The same mRNA technology that quickly brought the world a vaccine for COVID-19 is now showing promise as a bespoke therapy for cancer.
By Elie Dolgin
Angela Evatt lay face down under anaesthesia as surgeons removed a malignant mole from her back and a lymph node from her left armpit. The purpose of the operation was not only to excise the cancerous tissue from her body, but also to begin the process of
crafting a personalized vaccine that would train Evatts immune system to attack any tumour cells left behind.
The
vaccine uses messenger RNA (mRNA), carefully constructed to encode the unique mutant proteins, known as neoantigens, that are found on the surface of Evatts melanoma skin cancer cells. She first received this bespoke vaccine, alongside a potent immune-stimulating drug known as a checkpoint inhibitor, as part of a clinical trial in March 2020, just months before
mRNA vaccines would become
household names in the fight against COVID-19.
Every three weeks, Evatt travelled from her home in Maryland to Georgetown Universitys Lombardi Comprehensive Cancer Center in Washington DC to get an injection in each arm. The mRNAs enter her healthy cells and then produce the neoantigens that educate her immune system.
Despite Evatt experiencing severe flu-like symptoms for a day or two after each injection fever, achiness, chills the treatment seems to have been beneficial. Now in her mid-40s, she has remained in remission for more than three years after completing her treatments.
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