The following represents disclosure information provided by authors of this abstract. The program committee has reviewed all presenting author disclosure reports, identified potential conflicts of interest, and implemented strategies to manage those areas of conflict, where appropriate. All relationships are considered compensated. Relationships are self-held unless otherwise noted. I = Immediate Family Member, Inst = My Institution
 
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Circulating tumor DNA (ctDNA)-based minimal residual disease (MRD) measured by Guardant Reveal in patients (pts) with HER2-positive (HER2+) metastatic breast cancer (mBC) with long-term disease control on first-line trastuzumab-pertuzumab.
 
Antonio Llombart-Cussac
Honoraria - AstraZeneca Spain; Daiichi Sankyo Europe GmbH; Gilead Sciences; Lilly; Novartis; Pfizer; Roche
Consulting or Advisory Role - Agendia; AstraZeneca Spain; Gilead Sciences; Guardant Health; Lilly; Menarini; MSD Oncology; Novartis; Pfizer; Roche
Speakers' Bureau - AstraZeneca; Gilead Sciences
Research Funding - Novartis (Inst); Roche/Genentech (Inst)
Expert Testimony - Menarini
Travel, Accommodations, Expenses - Daiichi Sankyo/Astra Zeneca; Lilly; MSD Oncology; Pfizer; Roche
 
Leonor Fernandez-Murga
No Relationships to Disclose
 
Eduardo Martinez
Honoraria - AstraZeneca; Daiichi Sankyo; MSD; Pfizer; Roche
Travel, Accommodations, Expenses - AstraZeneca; Roche
 
Ana Santaballa
Consulting or Advisory Role - AstraZeneca; Eisai; GlaxoSmithKline; HOLOGIC IBERICA; Lilly; MSD; Pharma&
Speakers' Bureau - AstraZeneca; Eisai; Gilead Sciences; MSD; Pfizer; Pierre Fabre; SEAGEN
Travel, Accommodations, Expenses - AstraZeneca; PFIZER
 
Begoña Bermejo
Consulting or Advisory Role - AstraZeneca; Lilly; MSD; Novartis; Pfizer; Roche
Travel, Accommodations, Expenses - AstraZeneca; Pfizer; Roche
 
Álvaro Rodríguez-Lescure
Consulting or Advisory Role - AstraZeneca Spain; DAICHII-SANKYO; Lilly; MSD; Novartis; Pfizer; Pierre Fabre; Roche; SEAGEN
Speakers' Bureau - AstraZeneca Spain; DAICHII-SANKYO; Lilly; Novartis; Pfizer; Roche; SEAGEN
Research Funding - AstraZeneca Spain (Inst); BRISTOL-MYERS SQUIBB (Inst); Lilly (Inst); Novartis (Inst); Pfizer (Inst); Radius Health (Inst); Roche (Inst); Zymeworks (Inst)
Travel, Accommodations, Expenses - Pfizer; Roche
 
Vega Iranzo
Consulting or Advisory Role - AstraZeneca; MSD Oncology
Travel, Accommodations, Expenses - AstraZeneca; Gilead Sciences; Novartis; Pfizer; Roche
 
Pilar de la Morena
No Relationships to Disclose
 
Jorge Iranzo-Barreira
No Relationships to Disclose
 
Javier Cortes
Stock and Other Ownership Interests - Leuko (I); MAJ3 Capital
Honoraria - AstraZeneca; Celgene; Daiichi Sankyo; Eisai; Gilead Sciences; Lilly; Merck Sharp & Dohme; Novartis; Pfizer; Roche; Samsung; Steamline Therapeutics
Consulting or Advisory Role - Abbvie; AstraZeneca; Athenex; Bioasis; Biocon; Bioinvent; BioNTech SE; Boehringer Ingelheim; Bridgebio; Celgene; Cellestia Biotech; Circle Pharma; Clovis Oncology; Daiichi Sankyo; Delcath Systems; Ellipses Pharma; ERYTECH Pharma; Expres2ion Biotechnologies; GEMoaB; Gilead Sciences; GlaxoSmithKline; Hexagon Bio; HiberCell; Jazz Pharmaceuticals; Leuko; Lilly; Menarini; Merck Sharp & Dohme; Polyphor; Reveal Genomics; Roche; Seagen; SERVIER; Zymeworks
Research Funding - ARIAD (Inst); Astrazeneca (Inst); Baxalta (Inst); Bayer (Inst); Eisai (Inst); Guardant Health (Inst); Merck Sharp & Dohme (Inst); Pfizer (Inst); Piqur (Inst); Puma Biotechnology (Inst); Queen Mary university of London (Inst); Roche (Inst)
Patents, Royalties, Other Intellectual Property - Her2 as a predictor of response to dual HER2 blockade in the absence of cytotoxic therapy.Aleix Prat, Antonio Llombart, Javier Cortés.US 2019/ 0338368 A1; Pharmaceutical Combinations of A Pi3k Inhibitor And A Microtubule Destabilizing Agent. Javier Cortés Castán, Alejandro Piris Giménez, Violeta Serra Elizalde. WO 2014/199294 A.
Travel, Accommodations, Expenses - AstraZeneca; Daiichi Sankyo; Eisai; Gilead Sciences; Merck Sharp&Dhome; Novartis; Pfizer; Roche; Steamline Therapeutics
 
Francois Riva
Employment - Guardant-Health employee
 
José Manuel Pérez García
Consulting or Advisory Role - AstraZeneca; Daiichi Sankyo/Lilly; Eisai; Gilead Sciences; Lilly; MSD Oncology; Roche; Seattle Genetics/Astellas
Other Relationship - MEDSIR
 
Derek Dustin
Employment - Guardant Health employee
 
Jose Vidal-Martinez
No Relationships to Disclose
 
Sara Marín Liébana
Speakers' Bureau - Lilly
Travel, Accommodations, Expenses - Pfizer
 
Lucia Serrano-Garcia
No Relationships to Disclose
 
Juan Miguel Cejalvo
No Relationships to Disclose