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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ESR1 F404 mutations and acquired resistance to fulvestrant in the plasmaMATCH study.
 
Belinda Kingston
Honoraria - Guardant Health
 
Alex Pearson
No Relationships to Disclose
 
Maria Teresa Herrera-Abreu
No Relationships to Disclose
 
Ros Cutts
No Relationships to Disclose
 
Laura Moretti
No Relationships to Disclose
 
Lucy Kilburn
No Relationships to Disclose
 
Hannah Johnson
No Relationships to Disclose
 
Iain R. MacPherson
Consulting or Advisory Role - AstraZeneca; Daiichi Sankyo; Gilead Sciences; In3Bio; Merck Sharp & Dohme (UK) Limited; Pfizer; Roche
Speakers' Bureau - Daiichi Sankyo UK Ltd
Research Funding - Allarity Therapeutics (Inst); AstraZeneca (Inst); Byondis (Inst); Celldex (Inst); MSD (Inst); Novartis (Inst); Pfizer (Inst); Roche (Inst); Sanofi/Aventis (Inst); Tesaro (Inst)
Travel, Accommodations, Expenses - Daiichi Sankyo; Gilead Sciences; Novartis Pharmaceuticals UK Ltd.
 
Alistair E. Ring
Consulting or Advisory Role - AstraZeneca/Daiichi Sankyo; Lilly; MSD Oncology; Novartis; Pfizer; Roche UK; Seagen
 
Judith Bliss
Research Funding - AstraZeneca (Inst); Clovis Oncology (Inst); GlaxoSmithKline/Novartis (Inst); Janssen-Cilag (Inst); Lilly (Inst); Merck Sharp & Dohme (Inst); Pfizer (Inst); Puma Biotechnology (Inst); Roche (Inst)
Travel, Accommodations, Expenses - Pfizer
 
John A. Katzenellenbogen
Stock and Other Ownership Interests - Gilead Sciences; Lilly; Pfizer; Radius Health
Patents, Royalties, Other Intellectual Property - Patent pending, ERbeta; Patent pending, FOXM1
 
Nicholas C. Turner
Consulting or Advisory Role - AstraZeneca; Bristol-Myers Squibb; Lilly; Merck Sharp & Dohme; Novartis; Pfizer; Repare Therapeutics; Roche; Taiho Pharmaceutical; Zeno pharmaceuticals
Research Funding - AstraZeneca (Inst); Bio-Rad (Inst); Clovis Oncology (Inst); Guardant Health (Inst); Inivata (Inst); InVitae (Inst); Natera (Inst); Personalis (Inst); Pfizer (Inst); Roche (Inst)