Coverage dated August 18, 2026 to August 22, 2026

Experimental vaccine could prevent melanoma cancer from returning

Headline from KETK Tyler, from the development of Aug 20, 2026

Newest development Aug 21, 2026 · 2 reportsCancer vaccine breakthrough 'a monumental leap forward'

TYLER, Texas (KETK)-- Pharmaceutical companies Moderna and Merck have revealed an experimental vaccine that shows signs of preventing melanoma from returning in patients. The personalized vaccine uses genetic material from a patient's own cancer to train the immune system to target the disease bette…

KETK Tyler's own description from its feed. We collect headlines and these descriptions, not full articles; read the original reporting below.

Developments in this update

3 dated developments, oldest first, newest marked. Each is named by one outlet's own headline; open its reports to see every outlet that covered it.

  1. Moderna, Merck breakthrough could usher in cancer vaccines

    Headline from Omaha World-Herald ·

  2. Names this update

    Experimental vaccine could prevent melanoma cancer from returning

    Headline from KETK Tyler ·

  3. Newest

    Cancer vaccine breakthrough 'a monumental leap forward'

    Headline from Casper Star-Tribune ·

2 reports not tied to one development ·

Reports & sources

96 articles, oldest first.

  1. Just the News

    Cancer vaccine shows promise in preventing recurrance of melanoma, Merck and Moderna say (opens Just the News)

    Published

    Just the News's feed description

    Interim results from the trial show that the vaccine-drug combination appeared to increase the time before cancer returned in the high-risk patients, the companies said.

  2. NBC Los Angeles

    Merck and Moderna say cancer vaccine shows promise in preventing recurrence of melanoma (opens NBC Los Angeles)

    Published

    NBC Los Angeles's feed description

    A researcher works in the lab at the Moderna headquarters in Cambridge, Massachusetts.

  3. STAT

    STAT+: Moderna and Merck say mRNA cancer vaccine succeeded in late-stage melanoma trial (opens STAT)

    Published

    STAT's feed description

    A personalized mRNA cancer vaccine succeeded in a late-stage melanoma study, results that could herald a new, powerful approach in oncology.

  4. Union Leader

    Moderna, Merck vaccine cuts recurrence and spread of melanoma, raising new treatment hope (opens Union Leader)

    Published

    Union Leader's feed description

    Moderna and Merck said on Wednesday that a personalized mRNA cancer vaccine reduced the risk of recurrence and spread of melanoma in a late-stage trial, a major success in a new field of cancer treatment that sent Moderna’s shares surging…

  5. Investor's Business Daily

    Moderna Skyrockets 100%, Merck Jumps On Late-Stage Cancer Vaccine Trial Win (opens Investor's Business Daily)

    Published

    Investor's Business Daily's feed description

    Moderna skyrocketed and Merck jumped on strong late-stage trial results for their cancer vaccine in melanoma patients Wednesday.

  6. Quartz

    Moderna and Merck's personalized skin cancer vaccine cleared its first large-scale trial (opens Quartz)

    Published

    Quartz's feed description

    The mRNA-based vaccine combined with Keytruda reduced melanoma recurrence in more than 1,100 patients whose cancer had been surgically removed

  7. The Boston Globe

    Cancer vaccine using mRNA succeeded in late-stage melanoma trial, Moderna and Merck say (opens The Boston Globe)

    Published

    The Boston Globe's feed description

    Results could herald a new, powerful approach in other cancers.

  8. Forbes

    Moderna Shares Skyrocket 95% Toward Best Day Ever—On Success Of Cancer Drug Trial (opens Forbes)

    Published

    Forbes's feed description

    The trial marked the first successful final-stage study for any mRNA-based cancer therapy.

  9. Time

    Promising Results for mRNA Cancer Vaccine from Moderna and Merck (opens Time)

    Published

    Time's feed description

    Combining a vaccine and immunotherapy approach could open new ways to treat cancer.

  10. MedicalXpress

    Merck, Moderna claim 'promising' skin cancer vaccine results in key trial (opens MedicalXpress)

    Published

    MedicalXpress's feed description

    U.S. pharmaceutical firms Merck and Moderna announced Wednesday encouraging results from a trial of their experimental vaccine against melanoma, potentially clearing the way for approval.

  11. Fast Company

    Moderna stock price is skyrocketing on mRNA cancer vaccine trial news: Here’s what’s happening (opens Fast Company)

    Published

    Fast Company's feed description

    Moderna and Merck announced today that their personalized mRNA-based cancer vaccine, combined with Merck’s immunotherapy medication Keytruda, met initial goals in a late-stage trial. The ongoing mRNA cancer vaccine study involves 1,137 patients with high-risk melanoma that has been surgically remove…

  12. Washington Examiner

    Moderna stock prices double on claimed mRNA cancer vaccine breakthrough (opens Washington Examiner)

    Published

    Washington Examiner's feed description

    Stock prices for the American vaccine manufacturer Moderna more than doubled on Wednesday after the company reported successful results from its messenger RNA melanoma cancer vaccine. The mRNA shot, in combination with Merck’s immunotherapy drug Keytruda, met critical benchmarks in a global late-sta…

  13. The Hill

    Moderna, Merck mRNA cancer vaccine prevents melanoma from returning (opens The Hill)

    Published

    The Hill's feed description

    An experimental personalized mRNA-based cancer vaccine from Merck and Moderna was successful at preventing melanoma from returning or spreading in a late-stage trial of high risk patients, the companies announced Wednesday.

  14. CBS News

    Moderna stock surges as melanoma vaccine trial shows "landmark moment" (opens CBS News)

    Published

    CBS News's feed description

    Moderna and Merck announced study results that reflect a "landmark moment" in treatment for one of the deadliest forms of skin cancer.

  15. News Nation Now

    Cancer vaccine shows promise in late- stage melanoma trial; stocks soar (opens News Nation Now)

    Published

    News Nation Now's feed description

    A mRNA cancer vaccine showed positive results in a late-stage melanoma trial, Moderna and Merck announced Wednesday.

  16. UPI

    Moderna, Merck say cancer vaccine trial marks ‘landmark moment’ (opens UPI)

    Published

    UPI's feed description

    A cancer vaccine developed by Merck and Moderna treating patients with melanoma showed positive and promising late-stage testing results.

  17. KOB 4

    Moderna shares surge after it says its experimental mRNA cancer treatment passed a key test (opens KOB 4)

    Published

    KOB 4's feed description

    Moderna shares more than doubled after announcing initial results from a study of an experimental cancer treatment. Moderna and Merck are developing an mRNA-based cancer vaccine designed to be tailored to individual patients based on unique mutations within their tumors.

  18. Next Big Future

    Major Progress to Curing Cancer From Moderna Melanoma Vaccine (opens Next Big Future)

    Published

    Next Big Future's feed description

    Moderna is up 130% today with success of a phase 3 trial on AI Assisted personalized MRNA cancer treatment. Major Progress to Curing Cancer From Moderna Melanoma Vaccine. Phase 2 showed 50-60% reduction in cancer deaths, but pathway to personalized AI cancer treatments.

  19. Phl17

    Moderna, Merck mRNA cancer vaccine prevents melanoma from returning in trial (opens Phl17)

    Published

    Phl17's feed description

    The study also met a secondary goal of preventing cancer from spreading to different parts of the body.

  20. Honolulu Star-Advertiser

    New mRNA vaccine could prevent melanoma from returning (opens Honolulu Star-Advertiser)

    Published

    Honolulu Star-Advertiser's feed description

    An experimental mRNA vaccine allowed people with high-risk melanoma to live longer, cancer-free, in a large, closely watched trial, pharmaceutical companies Moderna and Merck announced today.

  21. NBC News

    Merck and Moderna say cancer vaccine shows signs of preventing recurrence of melanoma (opens NBC News)

    Published

    NBC News's feed description

    Pharmaceutical giants Moderna and Merck said that an experimental vaccine treatment has shown signs of preventing cancer from returning or spreading in a study of high-risk melanoma patients. NBC News health reporter Aria Bendix explains what happens next.

  22. The Boston Globe

    A ‘paradigm shift’: Moderna cancer vaccine results could herald new world of treatment (opens The Boston Globe)

    Published

    The Boston Globe's feed description

    The vaccine, tailor-made to the genetic sequence of a patient’s cancer and paired with existing treatment, has the potential to be a game-changer.

  23. ABC 30 Fresno

    Personalized mRNA cancer vaccine shows promise in extending life span in melanoma trial (opens ABC 30 Fresno)

    Published

    ABC 30 Fresno's feed description

    Merck and Moderna announced Wednesday that a personalized mRNA-based cancer vaccine succeeded in a large, late-stage trial among high-risk patients with melanoma.

  24. KRDO

    Moderna and Merck say melanoma vaccine succeeded in large trial (opens KRDO)

    Published

    KRDO's feed description

    By Meg Tirrell, Jamie Gumbrecht, and Reuters (CNN) — A personalized mRNA cancer vaccine combined with the immunotherapy Keytruda succeeded in a late-stage trial for the deadly skin cancer melanoma, its makers said Wednesday, potentially opening up a new way of treating the disease.

  25. Cheddar

    Moderna’s Personalized Cancer Vaccine Scores Late-Stage Win (opens Cheddar)

    Published

    Cheddar's feed description

    Moderna and Merck say their personalized mRNA cancer vaccine significantly reduced the risk of melanoma returning or spreading.

Showing the first 25 of 55 headlines. ·

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Separate coverage close to this update in time and subject.

Experimental vaccine could prevent melanoma cancer from returning | Since Then