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Phase III Study of Trastuzumab Deruxtecan (T-DXd) with or without Pertuzumab versus Taxane, Trastuzumab and Pertuzumab in HER2-positive, First-line Metastatic Breast Cancer (DESTINY-Breast09)

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-505249-24-00
Acronym
D967UC00001
Enrollment
143
Registered
2024-05-16
Start date
2021-05-27
Completion date
Unknown
Last updated
2025-07-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

HER2-positive metastatic breast cancer

Brief summary

PFS is defined as the time from date of randomisation until the date of objective radiological disease progression according to BICR using RECIST 1.1 or death by any cause.

Detailed description

PFS is defined as the time from date of randomisation until the date of objective radiological disease progression according to investigator assessment using RECIST 1.1 or death by any cause., OS is defined as the time from randomisation until the date of death due to any cause., ORR is defined as the proportion of participants who have a CR or PR, as determined by BICR and investigator assessment per RECIST 1.1. DoR is defined as the time from date of first detection of objective response until the date of objective radiological disease progression according to BICR and investigator assessment using RECIST 1.1 or death in the absence of progression., Time to second progression or death (PFS2) by Investigator assessment, Health related quality of life (HRQoL) using the European Organisation for Research and Treatment of Cancer (EORTC), Serum concentration of trastuzumab deruxtecan and pertuzumab, Immunogenicity of trastuzumab deruxtecan, alone or with pertuzumab., Safety and tolerability of trastuzumab deruxtecan, alone or with pertuzumab

Interventions

DRUGPERTUZUMAB
DRUGPlacebo (Saline 0.9% (weight per volume; w/v)) for Pertuzumab
DRUGDS-8201a
DRUGPACLITAXEL
DRUGTRASTUZUMAB
DRUGDOCETAXEL

Sponsors

AstraZeneca AB
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
PFS is defined as the time from date of randomisation until the date of objective radiological disease progression according to BICR using RECIST 1.1 or death by any cause.

Secondary

MeasureTime frame
PFS is defined as the time from date of randomisation until the date of objective radiological disease progression according to investigator assessment using RECIST 1.1 or death by any cause., OS is defined as the time from randomisation until the date of death due to any cause., ORR is defined as the proportion of participants who have a CR or PR, as determined by BICR and investigator assessment per RECIST 1.1. DoR is defined as the time from date of first detection of objective response until the date of objective radiological disease progression according to BICR and investigator assessment using RECIST 1.1 or death in the absence of progression., Time to second progression or death (PFS2) by Investigator assessment, Health related quality of life (HRQoL) using the European Organisation for Research and Treatment of Cancer (EORTC), Serum concentration of trastuzumab deruxtecan and pertuzumab, Immunogenicity of trastuzumab deruxtecan, alone or with pertuzumab., Safety and tolerabili

Countries

Belgium, Denmark, France, Germany, Hungary, Italy, Romania, Spain, Sweden

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026