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A Study to Evaluate the Safety and Effectiveness of Trastuzumab Emtansine (T-DM1) as Therapy in Chinese Participants With HER2 Positive Advanced Breast Cancer

An Observational Study to Evaluate the Safety and Effectiveness of Trastuzumab Emtansine (T-DM1) as Second- or Later-Line Therapy in Chinese Patients With HER2 Positive Advanced Breast Cancer

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05945927
Enrollment
178
Registered
2023-07-14
Start date
2023-09-13
Completion date
2025-08-30
Last updated
2025-10-10

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

Conditions

Breast Cancer

Brief summary

This study is a post-marketing, observational, multicenter, prospective study. It will investigate the the safety and effectiveness of T-DM1 in the Chinese population in real-world clinical practice.

Interventions

DRUGTrastuzumab emtansine

Trastuzumab emtansine will be administered as per local clinical practice and local labeling.

Sponsors

Hoffmann-La Roche
Lead SponsorINDUSTRY

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Diagnosed with HER2-positive, unresectable locally advanced or metastatic breast cancer before the start of T-DM1 treatment * Had prior treatment for breast cancer which must contain a taxane and trastuzumab * Get the treatment of T-DM1 for the first time after diagnosis of breast cancer

Exclusion criteria

* Patients not receiving treatment for HER2-positive breast cancer with T-DM1 according to standard of care and in line with the current summary of product characteristics (SPC)/local labeling * Has been previously treated with T-DM1 before current clinical visit * Currently participating in any clinical trials * Previously participated in any clinical trials investigating anti-HER2 drug within 1 year of the initiation of T-DM1

Design outcomes

Primary

MeasureTime frame
Percentage of Participants with Adverse EventsUp to approximately 1 year from index date

Secondary

MeasureTime frame
Time-to-treatment Discontinuation (TTD)Up to approximately 1 year from index date
Percentage of Participants Exposed to T-DM1 by Line of TherapyUp to approximately 1 year from index date
Percentage of Participants Exposed to T-DM1 by DosageUp to approximately 1 year from index date
Real-world Progression Free Survival (rwPFS)From the index date to the date of first progression of disease as recorded in rwTR or death due to any reason, whichever occurs first (up to approximately 1 year from index date)
Percentage of Participants Exposed to T-DM1 by DurationUp to approximately 1 year from index date
Percentage of Participants Exposed to Prior and Concomitant Medication by WHODrug Anatomical Therapeutic Chemical (ATC) Classification SystemUp to approximately 1 year from index date
Percentage of Participants Exposed to Prior and Concomitant Surgery/Procedure by Medical Dictionary for Regulatory Activities (MedDRA)Up to approximately 1 year from index date
Percentage of Participants Exposed to T-DM1 by Dose IntensityUp to approximately 1 year from index date

Countries

China

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026