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Study identifier: NCT07134153 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Phase I/II Study of Intrathecal/Ommaya T-DXd in HER2-Expressing Breast Cancer With Leptomeningeal/Brain Metastases

Condition: Breast Cancer  ·  Sponsor: Fudan University

PhasePhase 1/Phase 2
Planned participants139
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

Multiple trials confirm systemic T-DXd efficacy in HER2+ breast cancer with leptomeningeal/brain metastases, yet median LM survival remains 3-4 months, highlighting unmet needs. While systemic therapies improve survival, intracranial disease control remains limited due to poor BBB penetration. Preclinical data show no detectable T-DXd/DXd in CSF, though intrathecal trastuzumab demonstrates preliminary safety/efficacy in HER2+ LM. This study evaluates intrathecal/intra-Ommaya T-DXd plus systemic therapy in active HER2+ meningeal/brain metastases, assessing safety, intracranial efficacy, and CSF/peripheral blood T-DXd distribution to clarify BBB penetration potential. Findings may guide novel therapeutic strategies for this high-need population.

This description comes directly from the study's public registry record.

Talk to the study team

Jian Zhang, MD, PhD  ·  +8664175590  ·  syner2000@163.com

Yanchun Meng, MD  ·  +8664175590  ·  ycmclinicaltrials@126.com

Always discuss trial participation with your own doctor first.

Locations (2)

Fudan University Shanghai Cancer CenterShanghai, Shanghai Municipality, ChinaRecruiting
Fudan University Shanghai Cancer CancerShanghai, Shanghai Municipality, ChinaRecruiting

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Source record: clinicaltrials.gov/study/NCT07134153