{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,25]],"date-time":"2026-07-25T04:03:59Z","timestamp":1784952239320,"version":"3.55.0"},"reference-count":55,"publisher":"Public Library of Science (PLoS)","issue":"12","license":[{"start":{"date-parts":[[2022,12,1]],"date-time":"2022-12-01T00:00:00Z","timestamp":1669852800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/publicdomain\/zero\/1.0\/"}],"funder":[{"name":"Intramural Research Program of the NIH, National Cancer Institute, Center for Cancer Research","award":["ZIA BC011028"],"award-info":[{"award-number":["ZIA BC011028"]}]},{"name":"Intramural Research Program of the NIH, National Cancer Institute, Center for Cancer Research","award":["ZIA BC011038"],"award-info":[{"award-number":["ZIA BC011038"]}]},{"name":"Intramural Research Program of the NIH, National Cancer Institute, Center for Cancer Research","award":["ZID BC011089"],"award-info":[{"award-number":["ZID BC011089"]}]},{"name":"Intramural Research Program of the NIH, National Cancer Institute, Center for Cancer Research","award":["ZIC BC011044"],"award-info":[{"award-number":["ZIC BC011044"]}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:p>Germline mutations within the Krebs cycle enzyme genes fumarate hydratase (<jats:italic>FH<\/jats:italic>) or succinate dehydrogenase (<jats:italic>SDHB<\/jats:italic>, <jats:italic>SDHC<\/jats:italic>, <jats:italic>SDHD<\/jats:italic>) are associated with an increased risk of aggressive and early metastasizing variants of renal cell carcinoma (RCC). These RCCs express significantly increased levels of intracellular fumarate or succinate that inhibit 2-oxoglutarate-dependent dioxygenases, such as the TET enzymes that regulate DNA methylation. This study evaluated the genome-wide methylation profiles of 34 RCCs from patients with RCC susceptibility syndromes and 11 associated normal samples using the Illumina HumanMethylation450 BeadChip. All the HLRCC (<jats:italic>FH<\/jats:italic> mutated) and SDHB-RCC (<jats:italic>SDHB<\/jats:italic> mutated) tumors demonstrated a distinct CpG island methylator phenotype (CIMP). HLRCC tumors demonstrated an extensive and relatively uniform level of hypermethylation that showed some correlation with tumor size. SDHB-RCC demonstrated a lesser and more varied pattern of hypermethylation that overlapped in part with the HLRCC hypermethylation. Combined methylation and mRNA expression analysis of the HLRCC tumors demonstrated hypermethylation and transcription downregulation of genes associated with the HIF pathway, <jats:italic>HIF3A<\/jats:italic> and <jats:italic>CITED4<\/jats:italic>, the WNT pathway, <jats:italic>SFRP1<\/jats:italic>, and epithelial-to-mesenchymal transition and MYC expression, <jats:italic>OVOL1<\/jats:italic>. These observations were confirmed in the TCGA CIMP-RCC tumors. A selected panel of probes could identify the CIMP tumors and differentiate between HLRCC and SDHB-RCC tumors. This panel accurately detected all CIMP-RCC tumors within the TCGA RCC cohort, identifying them as HLRCC -like, and could potentially be used to create a liquid biopsy-based screening tool. The CIMP signature in these aggressive tumors could provide both a useful biomarker for diagnosis and a target for novel therapies.<\/jats:p>","DOI":"10.1371\/journal.pone.0278108","type":"journal-article","created":{"date-parts":[[2022,12,1]],"date-time":"2022-12-01T20:04:29Z","timestamp":1669925069000},"page":"e0278108","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":18,"title":["Kidney tumors associated with germline mutations of FH and SDHB show a CpG island methylator phenotype (CIMP)"],"prefix":"10.1371","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4814-7207","authenticated-orcid":true,"given":"Christopher J.","family":"Ricketts","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. 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