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QuantifyHER evaluates more precise ways to measure HER2 in tumors. It asks whether these measurements help distinguish people who respond to trastuzumab deruxtecan from those who do not.
QuantifyHER evaluates more precise ways to measure HER2 in tumors. It asks whether these measurements help distinguish people who respond to trastuzumab deruxtecan from those who do not.
Observational study registered as NCT06551116, sponsored by Abramson Cancer Center at Penn Medicine. Registry enrollment is 200 participants (estimated). Registry status checked October 10, 2026: recruiting. UCSF lists this study as open to eligible people; local availability and overall registry status are separate. See the registry for full eligibility and current sites.
The full inclusion and exclusion criteria are on the registry record. Read 2026-10-10. Recruiting overall does not mean a particular site is open; ask the study team.
ClinicalTrials.gov data courtesy of the US National Library of Medicine.
Shares UCSF Helen Diller Family Comprehensive Cancer Center, Breast cancer (all types) and the tags ucsf-breast-coverage, observational.
Shares UCSF Helen Diller Family Comprehensive Cancer Center, Breast cancer (all types) and the tags ucsf-breast-coverage, observational.
Shares UCSF Helen Diller Family Comprehensive Cancer Center, Breast cancer (all types) and the tags ucsf-breast-coverage, observational.
Shares UCSF Helen Diller Family Comprehensive Cancer Center, Breast cancer (all types) and the tags ucsf-breast-coverage, observational.
Shares UCSF Helen Diller Family Comprehensive Cancer Center, Breast cancer (all types) and the tags ucsf-breast-coverage, observational.
Shares UCSF Helen Diller Family Comprehensive Cancer Center, Breast cancer (all types) and the tags ucsf-breast-coverage, observational.
Shares UCSF Helen Diller Family Comprehensive Cancer Center, Breast cancer (all types) and the tags ucsf-breast-coverage, observational.
Shares UCSF Helen Diller Family Comprehensive Cancer Center, Breast cancer (all types) and the tags ucsf-breast-coverage, observational.
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