Genomic correlates of response to immune checkpoint therapies in clear cell renal cell carcinoma.

Genomic correlates of response to immune checkpoint therapies in clear cell renal cell carcinoma.
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DOI:
10.1126/science.aan5951
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发表时间:
2018-02-16
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Van Allen EM
Van Allen EM
中科院分区:
其他
文献类型:
--
作者:
Miao D;Margolis CA;Gao W;Voss MH;Li W;Martini DJ;Norton C;Bossé D;Wankowicz SM;Cullen D;Horak C;Wind-Rotolo M;Tracy A;Giannakis M;Hodi FS;Drake CG;Ball MW;Allaf ME;Snyder A;Hellmann MD;Ho T;Motzer RJ;Signoretti S;Kaelin WG Jr;Choueiri TK;Van Allen EM

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Immune checkpoint inhibitors targeting the programmed cell death-1 receptor (PD-1) improve survival in a subset of patients with clear cell renal cell carcinoma (ccRCC). To identify genomic alterations in ccRCC that correlate with response to anti-PD-1 monotherapy, we performed whole exome sequencing of metastatic ccRCC from 35 patients. We found that clinical benefit was associated with loss-of-function mutations in the PBRM1 gene (p=0.012), which encodes a subunit of a SWI/SNF chromatin remodeling complex (the PBAF subtype). We confirmed this finding in an independent validation cohort of 63 ccRCC patients treated with PD-(L)1 blockade therapy alone or in combination with anti-CTLA-4 therapies (p=0.0071). Gene expression analysis of PBAF-deficient ccRCC cell lines and PBRM1-deficient tumors revealed altered transcriptional output in JAK/STAT, hypoxia, and immune signaling pathways. PBRM1 loss in ccRCC may alter global tumor cell expression profiles to influence responsiveness to immune checkpoint therapy.
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