Blood Clots in People Treated for Melanoma
Original title: Incidence, Risk factors, and Outcomes of Thromboembolism in Patients with Melanoma Receiving Immune Checkpoint Inhibitors, Chemotherapy, or Targeted Therapy: a SEER-Medicare Analysis.
How far along is this research?
- Lab cells
- Animals
- Review
- Tested in people
This was tested in people. That is the most reliable kind of research we share.
This looked at records of people already treated and did not test anything new.
The short version
This study looked at how often people getting melanoma treatment got blood clots.
What was studied. Researchers looked at health records from 6,218 people treated for melanoma from 2008 to 2019. They counted blood clots within two years of starting immune drugs, chemotherapy, or targeted drugs.
What they found. After 12 months, clots in the veins happened in 7.4% to 8.4% of people, no matter the treatment. People who had a clot before, or whose cancer had spread to the brain, had a higher risk of a vein clot. People who got a clot had a much higher risk of dying.
What this means, and what it doesn't
What it could mean: Blood clots are a real risk to know about during melanoma treatment. You can ask your care team about it. This may matter most if you had a clot before, or if the cancer has spread to the brain.
What it doesn't mean: This study only looked back at past records. It does not prove these drugs cause clots. It does not mean you should stop or change your treatment. It did not test a way to prevent clots, and it is not a cure.
Source: PubMed, September 12, 2026 · Read the original
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