Towards Personalized Sampling in Clear Cell Renal Cell Carcinomas
Por:
Manini C, López-Fernández E and López JI
Publicada:
1 jul 2022
Ahead of Print:
12 jul 2022
Resumen:
Simple Summary Intratumor heterogeneity (ITH) is a constant event in malignant tumors and the cause of most therapeutic failures in modern oncology. Since clear cell renal cell carcinoma (CCRCC) is a paradigm of ITH, an appropriate tumor sampling is mandatory to unveil its histological and genomic complexity. Several strategies have been developed for such a purpose, trading-off cost and benefit. Here, we propose an evolution of the previous multisite tumor sampling (MSTS) strategy based on the last findings in the spatial distribution of metastasizing clones. This new personalized MSTS pays special attention to sample by sectors peripheral zones of the tumor, where ITH is high. Intratumor heterogeneity (ITH) is a constant evolutionary event in all malignant tumors, and clear cell renal cell carcinoma (CCRCC) is a paradigmatic example. ITH is responsible for most therapeutic failures in the era of precision oncology, so its precise detection remains a must in modern medicine. Unfortunately, classic sampling protocols do not resolve the problem as expected and several strategies have been being implemented in recent years to improve such detection. Basically, multisite tumor sampling (MSTS) and the homogenization of the residual tumor tissue are on display. A next step of the MSTS strategy considering the recently discovered patterns of ITH regionalization is presented here, the so-called personalized MSTS (pMSTS). This modification consists of paying more attention to sample the tumor periphery since it is this area with maximum levels of ITH.
Filiaciones:
Manini C:
Department of Pathology, San Giovanni Bosco Hospital, 10154 Turin, Italy
Department of Sciences of Public Health and Pediatrics, University of Turin, 10124 Turin, Italy
:
FISABIO Foundation, 46020 Valencia, Spain
Faculty of Health Sciences, European University of Valencia, 46023 Valencia, Spain
López JI:
Biocruces-Bizkaia Health Research Institute, 48903 Barakaldo, Spain
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