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Oncology

PD-L1

A protein on cancer cells that helps them evade the immune system; a key marker for immunotherapy.

PD-L1 expression on cancer cells indicates likely response to immunotherapy (pembrolizumab, nivolumab). Tested as a percentage of cells.

What this means for you: confirm PD-L1 testing. High PD-L1 makes immunotherapy a strong option, often as first-line therapy.

General information, not medical advice

What a term means for you depends on your own reports. Ask your treating doctor, or send your reports for a free review.

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