Identification of Actionable Fusions as an Anti-EGFR Resistance Mechanism Using a Circulating Tumor DNA Assay.

Gene fusions are established oncogenic drivers and emerging therapeutic targets in advanced colorectal cancer. This study aimed to detail the frequencies and clinicopathological features of gene fusions in colorectal cancer using a circulating tumor DNA assay. Circulating tumor DNA samples in patients with advanced colorectal cancer were analyzed at 4,581 unique time points using a validated plasma-based multigene assay that includes assessment of fusions in Forty-four unique fusions were identified in 40 (1.1%) of the 3,808 patients with circulating tumor DNA detected: Diverse and potentially actionable fusions can be detected using a circulating tumor DNA assay in patients with advanced colorectal cancer. Distribution of coexisting subclonal mutations in

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© 2019 by American Society of Clinical Oncology.

Déclaration de conflit d'intérêts

The following represents disclosure information provided by authors of this manuscript. All relationships are considered compensated unless otherwise noted. Relationships are self-held unless noted. I = Immediate Family Member, Inst = My Institution. Relationships may not relate to the subject matter of this manuscript. For more information about ASCO's conflict of interest policy, please refer to www.asco.org/rwc or ascopubs.org/po/author-center. Open Payments is a public database containing information reported by companies about payments made to US-licensed physicians (Open Payments). Katherine CliftonEmployment: WellCare (I) Stock and Other Ownership Interests: WellCare (I)Thereasa A. RichEmployment: Guardant Health Stock and Other Ownership Interests: Guardant Health, Myriad GeneticsVictoria M. RaymondEmployment: TrovaGene, Guardant Health Stock and Other Ownership Interests: TrovaGene, Guardant HealthArvind DasariConsulting or Advisory Role: Ipsen, AbbVie/Stemcentrx, Novartis, Voluntis, Lexicon Research Funding: Novartis, eFFECTOR Therapeutics, Eisai, Hutchison MediPharma, Merck, Guardant HealthJonathan M. LoreeConsulting or Advisory Role: Taiho Pharma Canada, Ipsen, Novartis, Bayer, AmgenTodd M. BauerEmployment: Tennessee Oncology Consulting or Advisory Role: Ignyta (Inst), Guardant Health, Loxo, Pfizer, Moderna Therapeutics (Inst), Pfizer (Inst), Exelixis Speakers' Bureau: Bayer Research Funding: Daiichi Sankyo (Inst), MedPacto (Inst), Incyte (Inst), Mirati Therapeutics (Inst), MedImmune (Inst), AbbVie (Inst), AstraZeneca (Inst), Leap Therapeutics (Inst), MabVax Therapeutics (Inst), Stemline Therapeutics (Inst), Merck (Inst), Eli Lilly (Inst), GlaxoSmithKline (Inst), Novartis (Inst), Pfizer (Inst), Genentech (Inst), Deciphera Pharmaceuticals (Inst), Merrimack (Inst), Immunogen (Inst), Millennium (Inst), Ignyta (Inst), Calithera Biosciences (Inst), Kolltan Pharmaceutical (Inst), Principia Biopharma (Inst), Peleton (Inst), Immunocore (Inst), Roche (Inst), Aileron Therapeutics (Inst), Bristol-Myers Squibb (Inst), Amgen (Inst), Moderna Therapeutics (Inst), Sanofi (Inst), Boehringer Ingelheim (Inst), Astellas Pharma (Inst), Five Prime Therapeutics (Inst), Jacobio Pharmaceuticals (Inst), Top Alliance BioSciences (Inst), Loxo (Inst), Janssen (Inst), Clovis Oncology (Inst), Takeda (Inst), Karyopharm Therapeutics (Inst), Onyx (Inst), Phosplatin Therapeutics (Inst), Foundation Medicine (Inst), ARMO BioSciences (Inst) Travel, Accommodations, Expenses: Astellas Pharma, AstraZeneca, Celgene, Clovis Oncology, EMD Serono, Genentech, Eli Lilly, Merck, Novartis, Pharmacyclics, SysmexYoung Kwang ChaeConsulting or Advisory Role: Foundation Medicine, Boehringer Ingelheim, Biodesix, Counsyl, AstraZeneca, Guardant Health, Takeda, Genentech, ImmuneOncia, Hanmi Speakers' Bureau: Genentech, Merck, AstraZeneca, Eli Lilly Research Funding: AbbVie, Bristol-Myers Squibb, Lexent Bio, Freenome, Biodesix Travel, Accommodations, Expenses: HanmiAxel GrotheyHonoraria: Elsevier, Aptitude Health, Imedex Consulting or Advisory Role: Genentech (Inst), Bayer (Inst), Bristol-Myers Squibb (Inst), Eli Lilly (Inst), Boston Biomedical (Inst), Amgen (Inst), Array BioPharma (Inst), Guardant Health (Inst), Daiichi Sankyo (Inst) Research Funding, Genentech (Inst), Bayer (Inst), Pfizer (Inst), Eisai (Inst), Eli Lilly (Inst), Boston Biomedical (Inst), Daiichi Sankyo (Inst), Array BioPharma (Inst) Travel, Accommodations, Expenses: Genentech, Bayer, Bristol-Myers Squibb, Boston Biomedical, Amgen, Boehringer Ingelheim, Merck Sharp & DohmeAndrew HendifarConsulting or Advisory Role: Novartis, Ipsen, Perthera, Celgene, AbbVie Research Funding: Ipsen Travel, Accommodations, Expenses: HalozymeDavid HenryHonoraria: Amgen, AMAG Pharmaceuticals Consulting or Advisory Role: AMAG Pharmaceuticals, Amgen Research Funding: Amgen Travel, Accommodations, Expenses: Amgen, AMAG PharmaceuticalsDaruka MahadevanHonoraria: Guardant Health, Caris Life Sciences Speakers' Bureau: Guardant Health, Caris Life Sciences Travel, Accommodations, Expenses: Guardant Health, Caris Life SciencesMohammad NezamiEmployment: Orange Coast Medical Center of Hope Stock and Other Ownership Interests: Sahel OncologyBenjamin TanConsulting or Advisory Role: Genentech Research Funding: Genentech, Eli Lilly, Pfizer, Bayer, Eisai, Exelixis, Merck Serono, Tyrogenex, SillaJen, Boehringer IngelheimZev A. WainbergConsulting or Advisory Role: Array BioPharma, Five Prime Therapeutics, Novartis, Eli Lilly, Merck, Merck KGaA, Bristol-Myers Squibb, Genentech, Bayer Research Funding: Novartis (Inst), Plexxikon (Inst), Pfizer (Inst), Merck (Inst), Five Prime Therapeutics (Inst) Travel, Accommodations, Expenses: GenentechRichard LanmanEmployment: Guardant Health, Veracyte Leadership: Guardant Health, Biolase Stock and Other Ownership Interests: Guardant Health, Biolase, Forward Medical Research Funding: Guardant HealthScott KopetzStock and Other Ownership Interests: MolecularMatch, Navire Consulting or Advisory Role: Roche, Genentech, EMD Serono, Merck, Karyopharm Therapeutics, Amal Therapeutics, Navire Pharma, Symphogen, Holy Stone, Biocartis, Amgen, Novartis, Eli Lilly, Boehringer Ingelheim, Boston Biomedical, AstraZeneca/MedImmune, Bayer Health, Pierre Fabre, EMD Serono Research Funding: Amgen (Inst), Sanofi (Inst), Biocartis (Inst), Guardant Health (Inst), Array BioPharma (Inst), Genentech (Inst), EMD Serono (Inst), MedImmune (Inst), Novartis (Inst), Eli Lilly (Inst)Van MorrisConsulting or Advisory Role: Clinical Genomics, Array Biopharma Research Funding: Bristol-Myers Squibb (Inst), Array BioPharma (Inst), EMD Serono (Inst) Travel, Accommodations, Expenses: Array BioPharma No other potential conflicts of interest were reported.