The genomic and epigenomic evolutionary history of papillary renal cell carcinomas
By
Bin Zhu,
Maria Luana Poeta,
Manuela Costantini,
Tongwu Zhang,
Jianxin Shi,
Steno Sentinelli,
Wei Zhao,
Vincenzo Pompeo,
Maurizio Cardelli,
Boian S. Alexandrov,
Burcak Otlu,
Xing Hua,
Kristine Jones,
Seth Brodie,
Jorge R Toro,
Meredith Yeager,
Mingyi Wang,
Belynda Hicks,
Ludmil Alexandrov,
Kevin M. Brown,
David C Wedge,
Stephen Chanock,
Vito Michele Fazio,
Michele Gallucci,
Maria Teresa Landi
Posted 27 Nov 2018
bioRxiv DOI: 10.1101/478156
(published DOI: 10.1038/s41467-020-16546-5)
Intratumor heterogeneity (ITH) and tumor evolution have been well described for clear cell renal cell carcinomas (ccRCC), but they are less studied for other kidney cancer subtypes. Here we investigate ITH and clonal evolution of papillary renal cell carcinoma (pRCC) and rarer kidney cancer subtypes, integrating whole-genome sequencing and DNA methylation data. In 29 tumors, up to 10 samples from the center to the periphery of each tumor, and metastatic samples in 2 cases, enable phylogenetic analysis of spatial features of clonal expansion, which shows congruent patterns of genomic and epigenomic evolution. In contrast to previous studies of ccRCC, in pRCC driver gene mutations and most arm-level somatic copy number alterations (SCNAs) are clonal. These findings suggest that a single biopsy would be sufficient to identify the important genetic drivers and targeting large-scale SCNAs may improve pRCC treatment, which is currently poor. While type 1 pRCC displays near absence of structural variants (SVs), the more aggressive type 2 pRCC and the rarer subtypes have numerous SVs, which should be pursued for prognostic significance. ### Competing Interest Statement The authors have declared no competing interest.
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