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Monday, July 20, 2026

ESMO 2026 oral slot for XmAb819 Phase 1 data lifts Xencor

 


  • Xencor announced proffered paper oral presentation at ESMO 2026 for XmAb819 in advanced ccRCC.
  • XmAb819 is first-in-class ENPP3 x CD3 T-cell engaging bispecific antibody.
  • Announcement on July 17 drove shares up ~17% to close at $17.47.
  • Builds on 2025 data showing 25% ORR and 70% disease control in target doses.
  • Confirms expansion cohort results presentation in second half of 2026.
  • Supports planned recommended Phase 3 dose selection in 2026 and pivotal study in 2027.
  • Oral slot at major oncology conference viewed as highly positive signal by investors.

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