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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Use of real-world data (RWD) to assess the utility of cell-free circulating tumor DNA (cfDNA) in identifying resistance to early treatment in advanced breast cancer (aBC).

Seth Andrew  Wander

Consulting or Advisory Role - Biovica; Foundation Medicine; Hologic; Lilly; Pfizer; Puma Biotechnology; Veracyte

Research Funding - Genentech

Caroline  Weipert

Employment - Guardant Health

Stock and Other Ownership Interests  - Guardant Health

Jiemin  Liao

Employment - Genentech (I); Guardant Health

Stock and Other Ownership Interests  - Guardant Health; Roche

Patents, Royalties, Other Intellectual Property - Guardant Health

Nicole  Zhang

Employment - Guardant Health

Stock and Other Ownership Interests  - Guardant Health

Patents, Royalties, Other Intellectual Property - Guardant Health

Pedram  Razavi

Honoraria - Daiichi Sankyo/Lilly; Epic Sciences; Guardant Health; Inivata; Pfizer

Consulting or Advisory Role - AstraZeneca; bioTheranostics; Epic Sciences; Foundation Medicine; Guardant Health; Inivata; Natera; Novartis; Tempus

Research Funding - Archer (Inst); AstraZeneca (Inst); Epic Sciences (Inst); GRAIL (Inst); Guardant Health (Inst); Illumina (Inst); Novartis (Inst); Tempus (Inst)