Optimism about a potential breakthrough in personalised cancer treatment has sent shares in Moderna soaring by nearly 100%.
A late-stage trial of its experimental, vaccine-based treatment, called Intismeran, reduced skin cancer re-growth and stopped it spreading to other parts of the body.
Intismeran combines an immunotherapy drug created by German pharmaceutical company Merck with a Moderna mRNA vaccine, a type of shot authorised widely to treat COVID-19.
In this case, though, the vaccine is made-to-order, based on an analysis of mutations found in the patients' particular tumors.
In pre-market trading in the United States, shares in Moderna rose 99.6 per cent to $125 and those in Merck rallied more than 7 per cent to $145.40.
The therapy could generate about $3bn for treating melanoma by 2035, according to Barclays analysts last month.
The ongoing trial enrolled 1,137 high-risk patients with stage IIB-IV melanoma that had been surgically removed.
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Volunteers were randomised to receive up to nine doses of Keytruda plus the personalised vaccine or Keytruda alone for about one year.
Merk and Moderna announced results of a mid-stage trial in January showing that it reduced the risk of recurrence or death by 49% after five years.
Melanoma is the deadliest form of skin cancer. Some 2,600 people died with melanoma skin cancer from 2022 to 2024 in the UK, according to Cancer Research.
(c) Sky News 2026: Moderna's share price nearly doubles on hopes of cancer treatment breakthrough
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