Determinants of late metastases in renal cell carcinoma
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View abstract on PubMed
Summary
This summary is machine-generated.Late-metastatic renal cell carcinoma (RCC) exhibits distinct tumor biology, characterized by less aggressive features and improved survival. Understanding these differences is crucial for recognizing late-onset RCC and its unique prognostic implications.
Area Of Science
- Urology
- Oncology
- Cancer Biology
Background
- Metastatic latency mechanisms in renal cell carcinoma (RCC) are not well understood.
- Distinguishing early versus late-onset metastases is critical for understanding RCC progression.
Purpose Of The Study
- To investigate the differences in tumor biology between early- and late-onset metastatic RCC.
- To identify key molecular and histopathological features differentiating late-metastatic RCC (late-mRCC).
Main Methods
- Comparative analysis of two independent cohorts (n=161 and n=307) of RCC patients.
- Evaluation of histopathological features, tumor biology (angiogenesis, inflammation), and genomic alterations (BAP1, PBRM1, SETD2).
- Assessment of tumor engraftment in murine models and patient survival outcomes.
Main Results
- Late-mRCC showed favorable histology (clear cell, lower stage, low grade, less necrosis, less sarcomatoid features) compared to early-mRCC.
- Late-mRCC tumors had increased angiogenesis and reduced inflammation; BAP1 loss was less common.
- Late-mRCC demonstrated a less aggressive phenotype, with lower murine engraftment rates and significantly longer survival post-metastasis.
Conclusions
- Late-mRCC possesses a distinct biological profile, characterized by a less aggressive phenotype and better prognosis.
- BAP1/PBRM1/SETD2 status and tumor necrosis are key discriminators of late-mRCC.
- Shared features between late-mRCC and pancreatic-metastasizing RCC suggest common underlying biology influencing metastatic latency and tropism.
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