The DOI matches its Crossref record; 55 of the 55 references it cites were found in a registry or an index.
Development of combination therapies to maximize the impact of KRAS-G12C inhibitors in lung cancer
Open accessAbstract
Combined targeting of KRAS-G12C, mTOR, and IGF1R enhances and extends the response to recently developed KRAS-G12C inhibitors in lung cancer models.
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“Still, in all cases, combination therapies to suppress adaptive feedback proved key to optimizing the frequency and durability of response in each tumor type (34,50,51).”
From Vertical Pathway Inhibition Overcomes Adaptive Feedback Resistance to KRASG12C Inhibition (2020) · cites this paper as [51]
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“other combinatorial partners including PI3K, mTOR, and Aurora Kinase inhibitors have been shown to have higher efficacy than EGFR inhibition in combination with KRAS G12C inhibition in lung cancer(10, 12, 13).”
From EGFR Blockade Reverts Resistance to KRASG12C Inhibition in Colorectal Cancer. (2020) · cites this paper as [12]
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“Interestingly, the restoration of flux through the ERK pathway was similarly observed after ARS-1620 treatment, and the feedback activation of Ras upstream RTKs has been raised as one of the key mechanisms of resistance to ARS-1620.12,15”
From Overcoming Resistance to Drugs Targeting KRAS Mutation (2020) · cites this paper as [15]
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“These experiments have identified receptor tyrosine kinase (RTK) signaling to PI3K and mTOR (23, 37–40), as well as the autophagy pathway (30) as collateral dependencies with KRAS and MAPK pathway inhibitors.”
From KRAS mutation in pancreatic cancer (2021) · cites this paper as [38]
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Citations
Cites
Comprehensive molecular profiling of lung adenocarcinoma
The Cancer Genome Atlas Research Network (2014) · Nature · doi:10.1038/nature13385 · Cited by 5,732
Targeting RAS signalling pathways in cancer therapy
Downward, J. (2003) · Nature reviews. Cancer · doi:10.1038/nrc969 · Cited by 3,354
Self-citationThe Rag GTPases Bind Raptor and Mediate Amino Acid Signaling to mTORC1
Sancak, Y., Peterson, T. R., Shaul, Y. D., Lindquist, R. A., Thoreen, C. C., Bar-Peled, L., & Sabatini, D. M. (2008) · Science · doi:10.1126/science.1157535 · Cited by 2,773
K-Ras(G12C) inhibitors allosterically control GTP affinity and effector interactions
Ostrem, J. M., Peters, U., Sos, M. L., Wells, J. A., & Shokat, K. M. (2013) · Nature · doi:10.1038/nature12796 · Cited by 2,557
RAS Proteins and Their Regulators in Human Disease
Simanshu, D. K., Nissley, D. V., & McCormick, F. (2017) · Cell · doi:10.1016/j.cell.2017.06.009 · Cited by 1,943
Clinical efficacy of a RAF inhibitor needs broad target blockade in BRAF-mutant melanoma
Bollag, G. E., Hirth, P., Tsai, J. Y., Zhang, J., Ibrahim, P. N., Cho, H., Spevak, W. R., Zhang, C., Zhang, Y., Habets, G. G. M., et al. (2010) · Nature · doi:10.1038/nature09454 · Cited by 1,875
RAS oncogenes: weaving a tumorigenic web
Pylayeva-Gupta, Y., Grabocka, E., & Bar-Sagi, D. (2011) · Nature Reviews Cancer · doi:10.1038/nrc3106 · Cited by 1,789
Carracedo, A., Ma, L., Teruya-Feldstein, J., Rojo, F., Salmena, L., Alimonti, A., Egia, A., Sasaki, A. T., Thomas, G., Kozma, S. C., et al. (2008) · Journal of Clinical Investigation · doi:10.1172/jci34739 · Cited by 1,381
Engelman, J. A., Chen, L., Tan, X., Crosby, K., Guimaraes, A. R., Upadhyay, R., Maira, M., McNamara, K., Perera, S. A., Song, Y., et al. (2008) · Nature Medicine · doi:10.1038/nm.1890 · Cited by 1,330
Targeting KRAS mutant cancers with a covalent G12C-specific inhibitor
Janes, M. R., Zhang, J., Li, L.-S., Hansen, R., Peters, U., Guo, X., Chen, Y., Babbar, A., Firdaus, S. J., Darjania, L., et al. (2018) · Cell · doi:10.1016/j.cell.2018.01.006 · Cited by 1,172 · cited 5×
“To avoid toxicities associated with the presence of a MEK inhibitor in this triple combination, we substituted a KRAS-G12C inhibitor, ARS-1620 (20), for the MEK inhibitor.”
BackgroundMethodInfluentialSelf-citationTargeting the PI3K pathway in cancer: are we making headway?
Janku, F., Yap, T. A., & Meric-Bernstam, F. (2018) · Nature Reviews Clinical Oncology · doi:10.1038/nrclinonc.2018.28 · Cited by 1,033
Skoulidis, F., Byers, L. A., Diao, L., Papadimitrakopoulou, V. A., Tong, P., Izzo, J., Behrens, C., Kadara, H., Parra, E. R., Canales, J. R., et al. (2015) · Cancer Discovery · doi:10.1158/2159-8290.cd-14-1236 · Cited by 936
Singh, A., Greninger, P., Rhodes, D., Koopman, L., Violette, S., Bardeesy, N., & Settleman, J. (2009) · Cancer Cell · doi:10.1016/j.ccr.2009.03.022 · Cited by 841
Selective inhibition of oncogenic KRAS output with small molecules targeting the inactive state
Patricelli, M. P., Janes, M. R., Li, L.-S., Hansen, R., Peters, U., Kessler, L. V., Chen, Y., Kucharski, J. M., Feng, J., Ely, T., et al. (2016) · Cancer Discovery · doi:10.1158/2159-8290.cd-15-1105 · Cited by 759
Self-citationAllele-specific inhibitors inactivate mutant KRAS G12C by a trapping mechanism
Lito, P., Solomon, M., Li, L.-S., Hansen, R., & Rosen, N. (2016) · Science · doi:10.1126/science.aad6204 · Cited by 691
Self-citationJänne, P. A., Shaw, A. T., Pereira, J. R., Jeannin, G., Vansteenkiste, J., Barrios, C., Franke, F. A., Grinsted, L., Zazulina, V., Smith, P., et al. (2013) · The Lancet Oncology · doi:10.1016/s1470-2045(12)70489-8 · Cited by 655
Combined BRAF, EGFR, and MEK Inhibition in Patients with BRAF V600E-Mutant Colorectal Cancer
Corcoran, R. B., André, T., Atreya, C. E., Schellens, J. H. M., Yoshino, T., Bendell, J. C., Hollebecque, A., McRee, A. J., Siena, S., Middleton, G., et al. (2018) · Cancer Discovery · doi:10.1158/2159-8290.cd-17-1226 · Cited by 592
A murine lung cancer co-clinical trial identifies genetic modifiers of therapeutic response
Chen, Z., Cheng, K., Walton, Z., Wang, Y., Ebi, H., Shimamura, T., Liu, Y., Tupper, T., Ouyang, J., Li, J., et al. (2012) · Nature · doi:10.1038/nature10937 · Cited by 446
mTOR Kinase Inhibition Causes Feedback-Dependent Biphasic Regulation of AKT Signaling
Rodrik-Outmezguine, V. S., Chandarlapaty, S., Pagano, N. C., Poulikakos, P. I., Scaltriti, M., Moskatel, E., Baselga, J., Guichard, S., & Rosen, N. (2011) · Cancer Discovery · doi:10.1158/2159-8290.cd-11-0085 · Cited by 442
Rational Selection of Syngeneic Preclinical Tumor Models for Immunotherapeutic Drug Discovery
Mosely, S. I. S., Prime, J. E., Sainson, R. C. A., Koopmann, J., Wang, D. Y. Q., Greenawalt, D. M., Ahdesmaki, M. J., Leyland, R., Mullins, S., Pacelli, L., et al. (2016) · Cancer Immunology Research · doi:10.1158/2326-6066.cir-16-0114 · Cited by 422
A combinatorial strategy for treating KRAS-mutant lung cancer
Manchado, E., Weissmueller, S., Morris, J. P., Chen, C.-C., Wullenkord, R., Lujambio, A., de Stanchina, E., Poirier, J. T., Gainor, J. F., Corcoran, R. B., et al. (2016) · Nature · doi:10.1038/nature18600 · Cited by 403
Restraining PI3K: mTOR signalling goes back to the membrane
Harrington, L. S., Findlay, G. M., & Lamb, R. F. (2004) · Trends in Biochemical Sciences · doi:10.1016/j.tibs.2004.11.003 · Cited by 369
The mutational landscapes of genetic and chemical models of Kras-driven lung cancer
Westcott, P. M. K., Halliwill, K. D., To, M. D., Rashid, M., Rust, A. G., Keane, T., Delrosario, R., Jen, K., Gurley, K. E., Kemp, C. J., et al. (2014) · Nature · doi:10.1038/nature13898 · Cited by 338
Jänne, P. A., van den Heuvel, M. M., Barlesi, F., Cobo, M., Mazieres, J., Crinò, L., Orlov, S., Blackhall, F., Wolf, J., Garrido, P., et al. (2017) · JAMA · doi:10.1001/jama.2017.3438 · Cited by 335
Elkabets, M., Vora, S., Juric, D., Morse, N., Mino-Kenudson, M., Muranen, T., Tao, J., Campos, A. B., Rodon, J., Ibrahim, Y. H., et al. (2013) · Science Translational Medicine · doi:10.1126/scitranslmed.3005747 · Cited by 332
SHP2 is required for growth of KRAS-mutant non-small-cell lung cancer in vivo
Mainardi, S., Mulero-Sánchez, A., Prahallad, A., Germano, G., Bosma, A., Krimpenfort, P., Lieftink, C., Steinberg, J. D., de Wit, N., Gonçalves-Ribeiro, S., et al. (2018) · Nature Medicine · doi:10.1038/s41591-018-0023-9 · Cited by 320 · cited 1×
“In addition, targeting Src homology region 2–containing protein tyrosine phosphatase 2 (SHP2) may provide another approach to shutting off RTK signaling input to RAS and may show beneficial combination effects with MEK inhibition in RAS-mutant cancers (15).”
BackgroundSun, C., Hobor, S., Bertotti, A., Zecchin, D., Huang, S., Galimi, F., Cottino, F., Prahallad, A., Grernrum, W., Tzani, A., et al. (2014) · Cell Reports · doi:10.1016/j.celrep.2014.02.045 · Cited by 304
Current treatment strategies for inhibiting mTOR in cancer
Chiarini, F., Evangelisti, C., McCubrey, J. A., & Martelli, A. M. (2014) · Trends in Pharmacological Sciences · doi:10.1016/j.tips.2014.11.004 · Cited by 279
KRAS G12C NSCLC Models Are Sensitive to Direct Targeting of KRAS in Combination with PI3K Inhibition
Misale, S., Fatherree, J. P., Cortez, E., Li, C., Bilton, S., Timonina, D., Myers, D. T., Lee, D., Gomez-Caraballo, M., Greenberg, M., et al. (2019) · Clinical Cancer Research · doi:10.1158/1078-0432.ccr-18-0368 · Cited by 259
Self-citationOncogene addiction as a foundational rationale for targeted anti‐cancer therapy: promises and perils
Torti, D., & Trusolino, L. (2011) · EMBO Molecular Medicine · doi:10.1002/emmm.201100176 · Cited by 257
Takano, A., Usui, I., Haruta, T., Kawahara, J., Uno, T., Iwata, M., & Kobayashi, M. (2001) · Molecular and Cellular Biology · doi:10.1128/mcb.21.15.5050-5062.2001 · Cited by 257
PI3K and MEK inhibitor combinations: examining the evidence in selected tumor types
Britten, C. D. (2013) · Cancer Chemotherapy and Pharmacology · doi:10.1007/s00280-013-2121-1 · Cited by 215
Ebi, H., Corcoran, R. B., Singh, A., Chen, Z., Song, Y., Lifshits, E., Ryan, D. P., Meyerhardt, J. A., Benes, C., Settleman, J., et al. (2011) · Journal of Clinical Investigation · doi:10.1172/jci57909 · Cited by 210
Trametinib: a MEK inhibitor for management of metastatic melanoma
Rutkowski, P. L., Ługowska, I., Koseła-Paterczyk, H., & Kozak, K. (2015) · OncoTargets and Therapy · doi:10.2147/ott.s72951 · Cited by 178
An approach to suppress the evolution of resistance in BRAFV600E-mutant cancer
Xue, Y., Martelotto, L., Baslan, T., Vides, A., Solomon, M., Mai, T. T., Chaudhary, N., Riely, G. J., Li, B. T., Scott, K., et al. (2017) · Nature Medicine · doi:10.1038/nm.4369 · Cited by 174
Kitai, H., Ebi, H., Tomida, S., Floros, K. V., Kotani, H., Adachi, Y., Oizumi, S., Nishimura, M., Faber, A. C., & Yano, S. (2016) · Cancer Discovery · doi:10.1158/2159-8290.cd-15-1377 · Cited by 162
Requirement for Interaction of PI3-Kinase p110α with RAS in Lung Tumor Maintenance
Castellano, E., Sheridan, C., Thin, M. Z., Nye, E., Spencer-Dene, B., Diefenbacher, M., Moore, C., Kumar, M., Murillo, M., Grönroos, E., et al. (2013) · Cancer Cell · doi:10.1016/j.ccr.2013.09.012 · Cited by 161
Self-citationMolina-Arcas, M., Hancock, D. C., Sheridan, C., Kumar, M. S., & Downward, J. (2013) · Cancer Discovery · doi:10.1158/2159-8290.cd-12-0446 · Cited by 157
Self-citationDifferential effector engagement by oncogenic KRAS
Yuan, T. L., Amzallag, A., Bagni, R., Yi, M., Afghani, S., Burgan, W., Fer, N., Strathern, L. A., Powell, K., Smith, B., et al. (2018) · Cell Reports · doi:10.1016/j.celrep.2018.01.051 · Cited by 150
TORC1 Suppression Predicts Responsiveness to RAF and MEK Inhibition in BRAF- Mutant Melanoma
Corcoran, R. B., Rothenberg, S. M., Hata, A. N., Faber, A. C., Piris, A., Nazarian, R. M., Brown, R. D., Godfrey, J. T., Winokur, D., Walsh, J., et al. (2013) · Science Translational Medicine · doi:10.1126/scitranslmed.3005753 · Cited by 140
Tolcher, A. W., Bendell, J. C., Papadopoulos, K. P., Burris, H. A., Patnaik, A., Jones, S. F., Rasco, D. W., Cox, D. S., Durante, M., Bellew, K. M., et al. (2014) · Annals of Oncology · doi:10.1093/annonc/mdu482 · Cited by 132
RAF suppression synergizes with MEK inhibition in KRAS mutant cancer cells
Lamba, S., Russo, M., Sun, C., Lazzari, L., Cancelliere, C., Grernrum, W., Lieftink, C., Bernards, R., Di Nicolantonio, F., & Bardelli, A. (2014) · Cell Reports · doi:10.1016/j.celrep.2014.07.033 · Cited by 110
Everolimus: side effect profile and management of toxicities in breast cancer
Paplomata, E., Zelnak, A. B., & O’Regan, R. M. (2013) · Breast Cancer Research and Treatment · doi:10.1007/s10549-013-2630-y · Cited by 94
Wang, C., Jin, H., Gao, D., Lieftink, C., Evers, B., Jin, G., Zheng, X., Wang, L., Beijersbergen, R. L., Qin, W., et al. (2018) · Journal of Hepatology · doi:10.1016/j.jhep.2018.07.004 · Cited by 93
Combined MEK and ERK inhibition overcomes therapy-mediated pathway reactivation in RAS mutant tumors
Merchant, M. A., Moffat, J. G., Schaefer, G., Chan, J., Wang, X., Orr, C., Cheng, J. H., Hunsaker, T., Shao, L., Wang, S. J., et al. (2017) · PLoS ONE · doi:10.1371/journal.pone.0185862 · Cited by 91
Direct inhibition of RAS: Quest for the Holy Grail?
Spencer-Smith, R., & O’Bryan, J. P. (2017) · Seminars in Cancer Biology · doi:10.1016/j.semcancer.2017.12.005 · Cited by 90
Grilley-Olson, J. E., Bedard, P. L., Fasolo, A., Cornfeld, M., Cartee, L., Razak, A. R. A., Stayner, L.-A., Wu, Y., Greenwood, R., Singh, R., et al. (2016) · Investigational New Drugs · doi:10.1007/s10637-016-0377-0 · Cited by 81
mTOR Signaling Confers Resistance to Targeted Cancer Drugs
Guri, Y., & Hall, M. N. (2016) · Trends in cancer · doi:10.1016/j.trecan.2016.10.006 · Cited by 81
Anderson, G. R., Winter, P. S., Lin, K. H., Nussbaum, D. P., Cakir, M., Stein, E. M., Soderquist, R. S., Crawford, L., Leeds, J. C., Newcomb, R., et al. (2017) · Cell Reports · doi:10.1016/j.celrep.2017.07.006 · Cited by 80
Inhibition by Interferon Preparations of a Solid Malignant Tumour and Pulmonary Metastases in Mice
Gresser, I., & Maury, C. (1972) · Nature New Biology · doi:10.1038/newbio236078a0 · Cited by 68
Assessing Therapeutic Efficacy of MEK Inhibition in a KRASG12C-Driven Mouse Model of Lung Cancer
Li, S., Liu, S., Deng, J., Akbay, E. A., Hai, J., Ambrogio, C., Zhang, L., Zhou, F., Jenkins, R. W., Adeegbe, D. O., et al. (2018) · Clinical Cancer Research · doi:10.1158/1078-0432.ccr-17-3438 · Cited by 67
Pender, A., García-Murillas, I., Rana, S., Cutts, R. J., Kelly, G. P., Fenwick, K., Kozarewa, I., de Castro, D. G., Bhosle, J., O'Brien, M. E. R., et al. (2015) · PLoS ONE · doi:10.1371/journal.pone.0139074 · Cited by 60
Self-citationDosing Three-Drug Combinations That Include Targeted Anti-Cancer Agents: Analysis of 37,763 Patients
Nikanjam, M., Liu, S., Yang, J., & Kurzrock, R. (2017) · The Oncologist · doi:10.1634/theoncologist.2016-0357 · Cited by 48
Bendell, J. C., Jones, S. F., Hart, L. L., Spigel, D. R., Lane, C. M., Earwood, C., Infante, J. R., Barton, J. H., & Burris, H. A. (2014) · Investigational New Drugs · doi:10.1007/s10637-014-0177-3 · Cited by 46
Lewis, K. D., & Medina, T. M. (2016) · OncoTargets and Therapy · doi:10.2147/ott.s86774 · Cited by 15
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KRAS Mutation: From Undruggable to Druggable in Cancer
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Moore, A. R., Rosenberg, S. C., McCormick, F., & Malek, S. (2020) · Nature Reviews Drug Discovery · doi:10.1038/s41573-020-0068-6 · Cited by 1,103
EGFR Blockade Reverts Resistance to KRASG12C Inhibition in Colorectal Cancer.
Amodio, V., Yaeger, R., Arcella, P., Cancelliere, C., Lamba, S., Lorenzato, A., Arena, S., Montone, M., Mussolin, B., Bian, Y., et al. (2020) · Cancer Discovery · doi:10.1158/2159-8290.cd-20-0187 · Cited by 504
“Besides RTK inhibition, several other combinatorial strategies have already been proposed, with the goal of potentiating the effects of these inhibitors(10-13).”
BackgroundVertical Pathway Inhibition Overcomes Adaptive Feedback Resistance to KRASG12C Inhibition
Ryan, M. B., Fece de la Cruz, F., Phat, S., Myers, D. T., Wong, E., Shahzade, H. A., Hong, C. B., & Corcoran, R. B. (2020) · Clinical Cancer Research · doi:10.1158/1078-0432.ccr-19-3523 · Cited by 496
KRAS mutation in pancreatic cancer
Luo, J. (2021) · Seminars in Oncology · doi:10.1053/j.seminoncol.2021.02.003 · Cited by 360
Metadata
- Authors
- Molina-Arcas, M., Moore, C., Rana, S., van Maldegem, F., Mugarza, E., Romero-Clavijo, P., Herbert, E., Horswell, S., Li, L.-S., Janes, M. R., Hancock, D. C., & Downward, J.
- Affiliations
- Oncogene Biology, Francis Crick Institute, London NW1 1AT, UK.
- The Francis Crick Institute (GB)
- Institute of Cancer Research (GB)
- Royal Veterinary College (GB)
- Wellspring Biosciences (United States) (US)
- Corresponding author
- Downward, Julian
- ORCID
- Venue
- Science Translational Medicine
- Published
- 2019-09-18
- Volume
- 11
- Issue
- 510
- ISSN
- 1946-6234 (ISSN-L)
- 1946-6242
- PMC
- PMC6764843
- OpenAlex
- W2973796265
- Semantic Scholar
- dca6223aaab20972c7583a0426e8b63dfc81d7f3
- Cited by
- 203
- References
- 55
- Citations by year
- 2026: 8 · 2025: 22 · 2024: 27 · 2023: 32 · 2022: 36 · 2021: 51 · 2020: 24 · 2019: 3
- FWCI
- 20.96
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Science Translational Medicine (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- RVC Research Online (Royal Veterinary College) (submittedVersion, cc-by)
- Data Archiving and Networked Services (DANS) (submittedVersion)
- Funders
- Wellcome (103799/Z/14/Z, FC001070)
- H2020 European Research Council (RASTARGET)
- Medical Research Council (FC001070)
- Cancer Research UK (FC001070)
- Topics
- Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Melanoma and MAPK Pathways
- Keywords
- KRAS G12C inhibitors, KRAS-mutant lung cancer, lung adenocarcinoma, combination therapy, MEK inhibition, IGF1R inhibition, mTOR inhibition, MAPK signaling, IGF1R signaling, tumor regression, mouse model
- MeSH terms
- Animals, Antineoplastic Combined Chemotherapy Protocols, Carcinoma, Non-Small-Cell Lung, Cell Survival, Imidazoles, Lung Neoplasms, Mice, Nude, Mutation, Pyrazines, Pyridones, Pyrimidinones, Signal Transduction, Proto-Oncogene Proteins p21(ras), Receptor, IGF Type 1, Phosphatidylinositol 3-Kinases, Mitogen-Activated Protein Kinase Kinases, RNA, Small Interfering, Protein Kinase Inhibitors, Proto-Oncogene Proteins c-akt, TOR Serine-Threonine Kinases
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