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Defining the origin, evolution, and immune composition of SDH-deficient renal cell carcinoma
oleh: Joana B. Neves, Kirsty Roberts, Janani Sivakumaran Nguyen, Soha El Sheikh, My-Anh Tran-Dang, Catherine Horsfield, Faiz Mumtaz, Peter Campbell, Hans Stauss, Maxine G.B. Tran, Thomas Mitchell
Format: | Article |
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Diterbitkan: | Elsevier 2022-11-01 |
Deskripsi
Summary: Succinate dehydrogenase (SDH)-deficient renal cell carcinoma represents a rare subtype of hereditary kidney cancer. Clinical diagnosis can be challenging and there is little evidence to guide systemic therapeutic options. We performed genomic profiling of a cohort of tumors through the analysis of whole genomes, transcriptomes, as well as flow cytometry and immunohistochemistry in order to gain a deeper understanding of their molecular biology. We find neutral evolution after early tumor activation with a lack of secondary driver events. We show that these tumors have epithelial derivation, possibly from the macula densa, a specialized paracrine cell of the renal juxtaglomerular apparatus. They subsequently develop into immune excluded tumors. We provide transcriptomic and protein expression evidence of a highly specific tumor marker, PAPPA2. These translational findings have implications for the diagnosis and treatment for this rare tumor subtype.