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
 
Open Payments is a public database containing information reported by companies about payments made to US-licensed physicians (Open Payments)
Trastuzumab deruxtecan (T-DXd) versus trastuzumab emtansine (T-DM1) in patients (pts) with HER2-positive (HER2+) unresectable and/or metastatic breast cancer (mBC): Safety follow-up of the randomized, phase 3 study DESTINY-Breast03.
 
Erika P. Hamilton
Consulting or Advisory Role - Arcus Biosciences (Inst); Arvinas (Inst); AstraZeneca (Inst); Black Diamond Therapeutics (Inst); Boehringer Ingelheim (Inst); CytomX Therapeutics (Inst); Daiichi Sankyo (Inst); Dantari (Inst); Deciphera (Inst); Eisai (Inst); Genentech/Roche (Inst); H3 Biomedicine (Inst); ITeos Therapeutics (Inst); Janssen (Inst); Lilly (Inst); Loxo (Inst); Merck (Inst); Mersana (Inst); Novartis (Inst); Pfizer (Inst); Puma Biotechnology (Inst); Relay Therapeutics (Inst); Seagen (Inst); Silverback Therapeutics (Inst)
Research Funding - Abbvie (Inst); Acerta Pharma (Inst); ADC Therapeutics (Inst); Akeso Biopharma (Inst); Amgen (Inst); Aravive (Inst); ArQule (Inst); Arvinas (Inst); AstraZeneca (Inst); AtlasMedx (Inst); Black Diamond Therapeutics (Inst); Boehringer Ingelheim (Inst); Clovis Oncology (Inst); Compugen (Inst); Curis (Inst); CytomX Therapeutics (Inst); Daiichi Sankyo (Inst); Dana Farber Cancer Hospital (Inst); Deciphera (Inst); eFFECTOR Therapeutics (Inst); Ellipses Pharma (Inst); EMD Serono (Inst); Fochon Pharmaceuticals (Inst); Fujifilm (Inst); G1 Therapeutics (Inst); Genentech/Roche (Inst); H3 Biomedicine (Inst); Harpoon (Inst); Hutchison MediPharma (Inst); Immunogen (Inst); Immunomedics (Inst); Incyte (Inst); InventisBio (Inst); Jacobio (Inst); Karyopharm Therapeutics (Inst); Leap Therapeutics (Inst); Lilly (Inst); Lycera (Inst); MabSpace Biosciences (Inst); Macrogenics (Inst); MedImmune (Inst); Merck (Inst); Mersana (Inst); Merus (Inst); Millennium (Inst); Molecular Templates (Inst); Myriad Genetics (Inst); Novartis (Inst); Nucana (Inst); Olema Pharmaceuticals (Inst); OncoMed (Inst); Onconova Therapeutics (Inst); ORIC Pharmaceuticals (Inst); Orinove (Inst); Pfizer (Inst); PharmaMar (Inst); Pieris Pharmaceuticals (Inst); Pionyr (Inst); Plexxikon (Inst); Radius Health (Inst); Regeneron (Inst); Repertoire Immune Medicines (Inst); Rgenix (Inst); Seagen (Inst); Sermonix Pharmaceuticals (Inst); Shattuck Labs (Inst); Silverback Therapeutics (Inst); Stem CentRx (Inst); Sutro Biopharma (Inst); Syndax (Inst); Syros Pharmaceuticals (Inst); Taiho Pharmaceutical (Inst); TapImmune Inc. (Inst); Tesaro (Inst); Treadwell Therapeutics (Inst); Verastem (Inst); Vincerx Pharma (Inst); Zenith Epigenetics (Inst); Zymeworks (Inst)
 
Vanessa PETRY HELENA Bragaia
Honoraria - Daiichi Sankyo; Novartis; Pfizer
Consulting or Advisory Role - Daiichi Sankyo
Speakers' Bureau - AstraZeneca; Daiichi Sankyo; Novartis; Pfizer
Expert Testimony - AstraZeneca
Travel, Accommodations, Expenses - Daiichi Sankyo; Mundipharma; Pfizer
 
Winnie Yeo
Honoraria - Amgen; AstraZeneca; Bristol-Myers Squibb; Daiichi Sankyo; Eisai; Lilly; Merck; MSD; Novartis; Sanofi; Taiho Pharmaceutical; Zai Lab
Consulting or Advisory Role - Amgen; AstraZeneca; Bristol-Myers Squibb; Daiichi Sankyo; Eisai; Lilly; Merck; MSD; Novartis; Pfizer; Taiho Pharmaceutical; Zai Lab
Speakers' Bureau - Amgen; Bristol-Myers Squibb; Daiichi Sankyo; Eisai; Lilly; Merck; MSD; Novartis; Pfizer; Taiho Pharmaceutical; Zai Lab
 
Sung-Bae Kim
Stock and Other Ownership Interests - Neogene TC Corp, Genopeak; Neogene TC Corp, Genopeak
Honoraria - DAEHWA Pharmaceutical; ISU ABXIS
Consulting or Advisory Role - AstraZeneca; BeiGene; DAEHWA Pharmaceutical; Daiichi Sankyo/Astra Zeneca; ISU Abxis; Lilly (Inst)
Research Funding - Dongkook Pharma (Inst); Genzyme (Inst); Novartis (Inst)
 
Giampaolo Bianchini
Honoraria - AstraZeneca/Daiichi Sankyo; Eisai; Exact Sciences; Gilead Sciences; Lilly; MSD; Novartis; Pfizer; Roche
Consulting or Advisory Role - AstraZeneca/Daiichi Sankyo; Eisai; Exact Sciences; Gilead Sciences; Lilly; MSD; Novartis; Pfizer; Roche; Roche Molecular Diagnostics; Seagan
Travel, Accommodations, Expenses - AstraZeneca/Daiichi Sankyo; Novartis; Pfizer; Roche
 
Toshinari Yamashita
Honoraria - AstraZeneca; Chugai Pharma; Daiichi Sankyo; Eisai; Kyowa Hakko Kirin; Lilly; Nippon Kayaku; Novartis; Pfizer; Taiho Pharmaceutical
Research Funding - Chugai Pharma (Inst); Kyowa Hakko Kirin (Inst); Nihonkayaku (Inst); Taiho Pharmaceutical (Inst)
 
Kan Yonemori
Honoraria - AstraZeneca; Chugai Pharma; Daiichi Sankyo/Astra Zeneca; Eisai; Fujifilm; Lilly Japan; Novartis; Ono Pharmaceutical; Pfizer; Taiho Pharmaceutical; Takeda
Consulting or Advisory Role - Chugai Pharma; Eisai; Novartis; OncXerna Therapeutics; Ono Pharmaceutical
Research Funding - AstraZeneca/MedImmune (Inst); Boehringer Ingelheim (Inst); Chugai Pharma (Inst); Daiichi Sankyo/Astra Zeneca (Inst); Eisai (Inst); Genmab (Inst); Haihe Pharmaceutical (Inst); Kyowa Hakko Kirrin (Inst); Lilly (Inst); MSD (Inst); Nihonkayaku (Inst); Novartis (Inst); Ono Pharmaceutical (Inst); Pfizer (Inst); Sanofi (Inst); Seagen (Inst); Taiho Pharmaceutical (Inst); Takeda (Inst); Takeda (Inst); Takeda (Inst)
 
Kenichi Inoue
Honoraria - Chugai Pharma
Research Funding - Astellas Pharma (Inst); Bayer (Inst); Chugai Pharma (Inst); Daiichi Sankyo (Inst); Eisai (Inst); Lilly (Inst); MSD (Inst); Novartis (Inst); Ono Pharmaceutical (Inst); Pfizer (Inst); Sanofi (Inst); Taiho Pharmaceutical (Inst)
 
Giuseppe Curigliano
Honoraria - Ellipses Pharma
Consulting or Advisory Role - AstraZeneca; Boehringer Ingelheim; Bristol-Myers Squibb; Daichi-Sankyo; Foundation Medicine; GlaxoSmithKline; Guardant Health; Lilly; Novartis; Pfizer; Roche/Genentech; Samsung; Seagen
Speakers' Bureau - Daiichi Sankyo; Foundation Medicine; Lilly; Novartis; Pfizer; Roche/Genentech; Samsung; Seagen
Research Funding - Merck (Inst)
Travel, Accommodations, Expenses - Pfizer; Roche/Genentech
 
Sara A. Hurvitz
Stock and Other Ownership Interests - Ideal Implant (I); ROM Tech (I)
Research Funding - Ambryx (Inst); Amgen (Inst); Arvinas (Inst); Bayer (Inst); Biomarin (Inst); Cascadian Therapeutics (Inst); CytomX Therapeutics (Inst); Daiichi Sankyo (Inst); Dignitana (Inst); Genentech/Roche (Inst); Gilead Sciences (Inst); GlaxoSmithKline (Inst); Immunomedics (Inst); Lilly (Inst); Macrogenics (Inst); Merrimack (Inst); Novartis (Inst); OBI Pharma (Inst); Pfizer (Inst); Phoenix Molecular Designs (Inst); Pieris Pharmaceuticals (Inst); Puma Biotechnology (Inst); Radius Health (Inst); Samumed (Inst); sanofi (Inst); Seagen (Inst); Zymeworks (Inst)
Travel, Accommodations, Expenses - Lilly
Other Relationship - Pfizer; Roche
 
Javier Cortes
Stock and Other Ownership Interests - Leuko (I); MedSIR; Nektar
Honoraria - Celgene; Daiichi Sankyo; Eisai; Lilly; Merck Sharp & Dohme; Novartis; Pfizer; Roche; Samsung
Consulting or Advisory Role - AstraZeneca; Athenex; Bioasis; Bioinvent; Boehringer Ingelheim; Celgene; Cellestia Biotech; Clovis Oncology; Daiichi Sankyo; Ellipses Pharma; ERYTECH Pharma; GEMoaB; Gilead Sciences; GlaxoSmithKline; HiberCell; 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 - Daiichi Sankyo; Eisai; Gilead Sciences; Novartis; Pfizer; Roche
 
Hiroji Iwata
Honoraria - AstraZeneca; Chugai Pharma; Daiichi Sankyo; Eisai; Kyowa Hakko Kirin; Lilly Japan; MSD; Pfizer; Taiho Pharmaceutical
Consulting or Advisory Role - AstraZeneca; Chugai Pharma; Daiichi Sankyo; Kyowa Hakko Kirin; Lilly Japan; MSD; Novartis; Pfizer; Sanofi
Research Funding - Amgen (Inst); AstraZeneca (Inst); Bayer (Inst); Boehringer Ingelheim (Inst); Chugai Pharma (Inst); Daiichi Sankyo (Inst); Kyowa Hakko Kirin (Inst); Lilly Japan (Inst); MSD (Inst); Nihonkayaku (Inst); Novartis (Inst); Pfizer (Inst); Sanofi (Inst)
 
Jillian Cathcart
Employment - Daiichi Sankyo
 
Yali Liu
Employment - Daiichi Sankyo
Stock and Other Ownership Interests - Daiichi Sankyo
 
Caleb C. Lee
Employment - Daiichi Sankyo, Inc.
 
Emarjola Bako
Employment - Daiichi Sankyo
 
Rachel Kim
Stock and Other Ownership Interests - Daiichi Sankyo Inc.
Travel, Accommodations, Expenses - Daiichi Sankyo Inc.
 
Seock-Ah Im
Consulting or Advisory Role - Amgen; AstraZeneca; Daiichi Sankyo; Eisai; GlaxoSmithKline; Hanmi; Lilly; MSD; Novartis; Pfizer; Roche/Genentech
Research Funding - AstraZeneca (Inst); Daewoong Pharmaceutical (Inst); Eisai (Inst); Pfizer (Inst); Roche/Genentech (Inst)
Other Relationship - Roche