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- W4385455729 abstract "<ns4:p><ns4:bold>Background:</ns4:bold> The risk of recurrence after nephrectomy for primary clear cell renal cell carcinoma (ccRCC) is estimated in daily practice solely based on clinical criteria. The aim of this study was to assess the prognostic relevance of common somatic mutations with respect to tumor aggressiveness and outcomes of ccRCC patients after definitive treatment.</ns4:p><ns4:p> <ns4:bold>Methods:</ns4:bold> Primary tumors from 37 patients with ccRCC who underwent radical nephrectomy were analyzed for presence of somatic mutations using a 15-gene targeted next-generation sequencing (NGS) panel. Associations to histopathologic characteristics and outcomes were investigated in the study cohort (n=37) and validated in The Cancer Genome Atlas (TCGA) ccRCC cohort (n=451).</ns4:p><ns4:p> <ns4:bold>Results:</ns4:bold> <ns4:italic>VHL</ns4:italic> was the most frequently mutated gene (51%), followed by <ns4:italic>PBRM1</ns4:italic> (27%), <ns4:italic>BAP1</ns4:italic> (13%), <ns4:italic>SETD2</ns4:italic> (13%), <ns4:italic>KDM5C </ns4:italic>(5%), <ns4:italic>ATM </ns4:italic>(5%), <ns4:italic>MTOR</ns4:italic> (5%), and <ns4:italic>PTEN</ns4:italic> (3%). One-third of patients did not have any somatic mutations within the 15-gene panel. The vast majority of tumors harboring no mutations at all or VHL-only mutations (51%) were more frequently of smaller size (pT1-2) and earlier stage (I/II), whereas presence of any other gene mutations in various combinations with or without <ns4:italic>VHL</ns4:italic> was enriched in larger (pT3) and higher stage tumors (III) (p=0.02). No recurrences were noted in patients with unmutated tumors or <ns4:italic>VHL</ns4:italic>-only mutations as opposed to three relapses in patients with non-<ns4:italic>VHL</ns4:italic> somatic mutations (p=0.06). Presence of somatic mutations in <ns4:italic>PBRM1, BAP1, SETD2, KDM5C, ATM, MTOR</ns4:italic>, or <ns4:italic>PTEN</ns4:italic> genes in 451 TCGA ccRCC patients was associated with a significantly shorter disease-free survival (DFS) compared to those with unaltered tumors (q=0.01).</ns4:p><ns4:p> <ns4:bold>Conclusions:</ns4:bold> Preliminary findings from this ongoing study support the prognostic value of non-<ns4:italic>VHL</ns4:italic> mutations including <ns4:italic>PBRM1, BAP1, SETD2, KDM5C, ATM, MTOR</ns4:italic>, and <ns4:italic>PTEN</ns4:italic> in primary ccRCC tumors as surrogates of earlier recurrence and potential selection for adjuvant immune checkpoint inhibition.</ns4:p>" @default.
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- W4385455729 date "2023-08-01" @default.
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- W4385455729 title "Mutational profile of primary clear cell renal cell carcinoma predicts recurrence and potential candidacy for adjuvant immune checkpoint inhibition" @default.
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- W4385455729 doi "https://doi.org/10.12688/f1000research.136087.1" @default.
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