The abstract is read at the publisher; the summary is JClub's.
Across 2,161 high-grade serous ovarian carcinoma tumors, tumor cellular composition predicts transcriptomic subtype in held-out cohorts with ROC-AUC 0.817–0.963.
- Why it matters: Although HGSC has four reproducible bulk transcriptomic subtypes, it was unclear whether they reflect tumor microenvironment composition or intrinsic tumor programs that could guide treatment.
- What they did: The study used single-cell–constructed tumor models holding epithelial cells constant while varying one cell type, and then tested composition’s ability to predict subtype across ten cohorts.
- The result: In primary tumors, adjusting for composition largely attenuated subtype–survival associations, while fibroblast content remained prognostic, implying subtype biology and prognosis largely reflect microenvironment composition.
The findingWhy it mattersWhat they didThe result
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