Analysis of tumor-infiltrating lymphocyte (TIL) functional states, particularly tumor-reactive PD-1T TILs, within specific spatial context, can serve as a biologically informed predictive marker of immunotherapy that may be superior to standard clinical biomarkers. High-plex quantitative immune cell phenotyping within their spatial context has tremendous potential in immuno-oncology.

See related article by Hummelink et al., p. 4893

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