A Study of Dato-DXd in Inoperable or Metastatic Hormone Receptor-positive, HER2 IHC 0 Breast Cancer

PHASE3Not yet recruitingINTERVENTIONAL
Enrollment

100

Participants

Timeline

Start Date

September 30, 2025

Primary Completion Date

February 2, 2028

Study Completion Date

February 2, 2028

Conditions
Breast Cancer
Interventions
DRUG

Dato-DXd

All participants will receive Dato-DXd (6 mg/kg IV on Day 1, Q3W; up to a maximum of 540 mg Q3W for participants ≥ 90 kg) until investigator-defined disease progression according to RECIST 1.1 or until unacceptable toxicity, withdrawal of consent, or another criterion for discontinuation is met. Continued treatment with the same study drug post-progression may be allowed, based on prior discussion with sponsor/sponsor representative/study physician on a case-by-case basis following written investigator's confirmation of continuing clinical benefit to the patient post progression. The study is anticipated to enrol for an 18-month period, and DCO is expected to occur approximately 6 months after the last participant has been dosed.

Trial Locations (37)

3722

Research Site, Seoul

5505

Research Site, Seoul

10021

Research Site, New York

15006

Research Site, A Coruña

18007

Research Site, Granada

20141

Research Site, Milan

28033

Research Site, Madrid

28040

Research Site, Madrid

33081

Research Site, Aviano

33770

Research Site, Largo

34070

Research Site, Montpellier

41009

Research Site, Seville

41404

Research Site, Bukgu

46009

Research Site, Valencia

46825

Research Site, Fort Wayne

47014

Research Site, Meldola

50134

Research Site, Florence

63050

Research Site, Clermont-Ferrand

69310

Research Site, Pierre-Bénite

75005

Research Site, Paris

77024

Research Site, Houston

80131

Research Site, Napoli

85925

Research Site, La Roche-sur-Yon

98373

Research Site, Puyallup

136705

Research Site, Seoul

250117

Research Site, Shandong

276001

Research Site, Linyi

410013

Research Site, Changsha

430071

Research Site, Wuhan

450008

Research Site, Zhengzhou

510060

Research Site, Guangzhou

00168

Research Site, Roma

410-769

Research Site, Goyang-si

03080

Research Site, Seoul

06273

Research Site, Seoul

06351

Research Site, Seoul

08035

Research Site, Barcelona

Sponsors

Lead Sponsor

Collaborators (1)

All Listed Sponsors
collaborator

Daiichi Sankyo

INDUSTRY

lead

AstraZeneca

INDUSTRY