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Priya Life Science Clinical trial register
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Trackers› Clinical trials› ER-Positive HER2-Negative Breast Cancer
Clinical trial register · United Kingdom · industry-sponsored

ER-Positive HER2-Negative Breast Cancer Trials in the UK

Every industry-sponsored study on the ClinicalTrials.gov registry that lists a UK site and is open, about to open, active-but-closed, or enrolling by invitation. This deliberately excludes academic and other non-industry sponsors — the full UK registry across all sponsors is far larger. UK studies may also be registered separately on ISRCTN.

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Source: ClinicalTrials.gov. Complete coverage of the industry-sponsored slice — all 2852 matching records are in this view (non-industry sponsors are out of scope by design, not truncated). Synced 17 Sep 2026, 08:23 UTC
2852
Studies in scope
industry-sponsored, all four open statuses
1378
Recruiting now
open to new participants
540
Lead sponsors
across recruiting studies
Top sites
Cambridge 2 Nottingham 2 Colchester 1 Leeds 1 Surrey 1
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Recruitment status
Phase
Lead sponsor
AstraZeneca2
Site city
Cambridge2 Nottingham2 Colchester1 Leeds1 Surrey1
All 11 cities
Target enrolment
to
2 of 2852 studies
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Status
Study
Lead sponsor
Phase
Enrol
UK sites
Start
Active, closed
Phase III Study to Assess AZD9833+ CDK4/6 Inhibitor in HR+/HER2-MBC With Detectable ESR1m Before Progression (SERENA-6)
NCT04964934ER-Positive HER2-Negative Breast Cancer
AstraZeneca
Phase 3
315
Blackpool, Cambridge, London, Manchester, Newport, Nottingham, Portsmouth, Reading
2021-06-30
Active, closed
A Comparative Study of AZD9833 Plus Palbociclib Versus Anastrozole Plus Palbociclib in Patients With ER-Positive HER2 Negative Breast Cancer Who Have Not Received Any Systemic Treatment for Advanced Disease
NCT04711252ER-Positive HER2-Negative Breast Cancer
AstraZeneca
Phase 3
1,370
Cambridge, Colchester, Leeds, Nottingham, Surrey
2021-01-28
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1
Cite this view

Priya Life Science (2026). Clinical trial register: industry-sponsored studies with a UK investigative site, filtered. Derived from ClinicalTrials.gov. Retrieved 17 September 2026. https://priyalifescience.com/clinical-trials-uk/condition/er-positive-her2-negative-breast-cancer

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Listing here is informational and not medical advice; eligibility is determined by each study team. Compare pay for the teams running these studies in the UK Pharma Salary Guide, or see the Ireland, EU and USA registers.