TY - JOUR
T1 - Resistance to checkpoint blockade therapy through inactivation of antigen presentation
AU - Sade-Feldman, Moshe
AU - Jiao, Yunxin J.
AU - Chen, Jonathan H.
AU - Rooney, Michael S.
AU - Barzily-Rokni, Michal
AU - Eliane, Jean Pierre
AU - Bjorgaard, Stacey L.
AU - Hammond, Marc R.
AU - Vitzthum, Hans
AU - Blackmon, Shauna M.
AU - Frederick, Dennie T.
AU - Hazar-Rethinam, Mehlika
AU - Nadres, Brandon A.
AU - Van Seventer, Emily E.
AU - Shukla, Sachet A.
AU - Yizhak, Keren
AU - Ray, John P.
AU - Rosebrock, Daniel
AU - Livitz, Dimitri
AU - Adalsteinsson, Viktor
AU - Getz, Gad
AU - Duncan, Lyn M.
AU - Li, Bo
AU - Corcoran, Ryan B.
AU - Lawrence, Donald P.
AU - Stemmer-Rachamimov, Anat
AU - Boland, Genevieve M.
AU - Landau, Dan A.
AU - Flaherty, Keith T.
AU - Sullivan, Ryan J.
AU - Hacohen, Nir
N1 - Funding Information:
We thank the Genomics Platform of the Broad Institute of Harvard and MIT for the whole exome and RNA sequencing performed in this study. The research was supported by grants from Melanoma Research Alliance (Sullivan), Broad Next-10 (Hacohen), Cancer Research Institute (Clinic and Laboratory Integration Program, Hacohen), Adelson Medical Research Foundation (Flaherty; Sullivan, Hacohen), NIH/NCI (1R01CA208756, Hacohen), and NIH/NHGRI (5U54HG003067; PIs: Stacey Gabriel, Eric S. Lander). We also thank the following grants for their support: Wellcome Fund Career Award for Medical Scientists (Landau), Stand Up to Cancer Innovative Research Grant (Landau), NIH Big Data to Knowledge initiative (1K01ES025431-0, Landau), Institute for Medical Research Israel-Canada (Sade-Feldman), Tosteson & Fund for Medical Discovery fellowships (Sade-Feldman), and National Science Foundation Graduate Research Fellowship (Jiao).
Publisher Copyright:
© 2017 The Author(s).
PY - 2017/12/1
Y1 - 2017/12/1
N2 - Treatment with immune checkpoint blockade (CPB) therapies often leads to prolonged responses in patients with metastatic melanoma, but the common mechanisms of primary and acquired resistance to these agents remain incompletely characterized and have yet to be validated in large cohorts. By analyzing longitudinal tumor biopsies from 17 metastatic melanoma patients treated with CPB therapies, we observed point mutations, deletions or loss of heterozygosity (LOH) in beta-2-microglobulin (B2M), an essential component of MHC class I antigen presentation, in 29.4% of patients with progressing disease. In two independent cohorts of melanoma patients treated with anti-CTLA4 and anti-PD1, respectively, we find that B2M LOH is enriched threefold in non-responders (~30%) compared to responders (~10%) and associated with poorer overall survival. Loss of both copies of B2M is found only in non-responders. B2M loss is likely a common mechanism of resistance to therapies targeting CTLA4 or PD1.
AB - Treatment with immune checkpoint blockade (CPB) therapies often leads to prolonged responses in patients with metastatic melanoma, but the common mechanisms of primary and acquired resistance to these agents remain incompletely characterized and have yet to be validated in large cohorts. By analyzing longitudinal tumor biopsies from 17 metastatic melanoma patients treated with CPB therapies, we observed point mutations, deletions or loss of heterozygosity (LOH) in beta-2-microglobulin (B2M), an essential component of MHC class I antigen presentation, in 29.4% of patients with progressing disease. In two independent cohorts of melanoma patients treated with anti-CTLA4 and anti-PD1, respectively, we find that B2M LOH is enriched threefold in non-responders (~30%) compared to responders (~10%) and associated with poorer overall survival. Loss of both copies of B2M is found only in non-responders. B2M loss is likely a common mechanism of resistance to therapies targeting CTLA4 or PD1.
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U2 - 10.1038/s41467-017-01062-w
DO - 10.1038/s41467-017-01062-w
M3 - Article
C2 - 29070816
AN - SCOPUS:85032288210
SN - 2041-1723
VL - 8
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 1136
ER -