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  "path": "/news/2026-02-virus-specific-cells-immunotherapy-success.html",
  "publishedAt": "2026-02-10T17:16:31.000Z",
  "site": "https://medicalxpress.com",
  "tags": [
    "Neuroscience"
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  "textContent": "Progressive multifocal leukoencephalopathy (PML) is a rare but serious brain infection. It gradually destroys brain tissue and often leads to death within a few weeks. It is triggered by human polyomavirus 2, also known as John Cunningham (JC) virus. PML primarily affects people with weakened immune cells, especially T lymphocytes.",
  "title": "Virus-specific T cells may predict immunotherapy success for a rare brain infection"
}