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CAMBRIA-2: A Phase III, Open-Label, Randomised Study to Assess the Efficacy and Safety of Camizestrant (AZD9833, a Next Generation, Oral Selective Estrogen Receptor Degrader) vs Standard Endocrine Therapy (Aromatase Inhibitor or Tamoxifen) as Adjuvant Treatment for Patients With ER+/HER2- Early Breast Cancer and an Intermediate-High or High Risk of Recurrence Who Have Completed Definitive Locoregional Treatment and Have No Evidence of Disease

This is a Phase III open-label study to assess if camizestrant improves outcomes compared to standard adjuvant endocrine therapy for patients with ER+/HER2- early breast cancer with intermediate-high or high risk for disease recurrence who completed definitive locoregional therapy (with or without chemotherapy). The planned duration of treatment in either arm within the study will be 7 years. - CAMBRIA-2

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2061230074
Enrollment
550
Registered
2023-11-11
Start date
2024-03-06
Completion date
Unknown
Last updated
2026-05-25

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

Conditions

Breast Cancer, Early Breast Cancer

Interventions

arm A: continue with SoC ET as directed by investigator +- abemaciclib until treatment discontinuation. Pre- and peri-menopausal women and men will be treated with either an AI or tamoxifen per invest

Sponsors

Hibi Kazushige
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: - Women and Men; 18 years or more at the time of screening (or per national guidelines) - Histologically confirmed ER+/HER2- early-stage resected invasive breast cancer with absence of any evidence of metastatic disease as defined in the protocol. - Completed adequate (definitive) locoregional therapy (surgery with or without radiotherapy) for the -primary breast tumour(s), with or without (neo)adjuvant chemotherapy. - Patients must be randomised within 12 months of definitive breast surgery. - Patients may have received up to 12 weeks of endocrine therapy prior to randomisation. - Eastern Cooperative Oncology Group (ECOG) performance status of 1 or less - Adequate organ and bone marrow function

Exclusion criteria

Exclusion criteria: - Inoperable locally advanced or metastatic breast cancer - Pathological complete response following treatment with neoadjuvant therapy - History of any other cancer (except non-melanoma skin cancer or carcinoma in situ of the cervix or considered a very low risk of recurrence per investigator judgement) unless in complete remission with no therapy for a minimum of 5 years from the date of randomisation - Any evidence of severe or uncontrolled systemic diseases which, in the investigator's opinion precludes participation in the study or compliance - Known LVEF 480 ms at screening - Concurrent exogenous reproductive hormone therapy or non topical hormonal therapy for non-cancer-related conditions - Any concurrent anti-cancer treatment not specified in the protocol with the exception of bisphosphonates (e.g. zoledronic acid) or RANKL inhibitors ( eg, denosumab) - Previous treatment with camizestrant, investigational SERDs/investigational ER targeting agents, or fulvestrant - Currently pregnant (confirmed with positive serum pregnancy test) or breastfeeding. - Patients with known hypersensitivity to active or inactive excipients of camizestrant or drugs with a similar chemical structure or class to camizestrant. In pre-/peri-menopausal female and male patients, known hypersensitivity or intolerance to LHRH agonists that would preclude the patient from receiving any LHRH agonist.

Design outcomes

Primary

MeasureTime frame
Invasive breast cancer-free survival (IBCFS) [ Time Frame: Up to 14 years ] IBCFS is defined as time from randomisation until date of first occurrence of: Invasive ipsilateral breast tumour recurrence Locoregional invasive breast cancer recurrence Distant recurrence Contralateral invasive breast cancer Death attributable to any cause.

Countries

Argentina, Australia, Austria, Belgium, Brazil, Bulgaria, Canada, Chile, China, Colombia, Croatia, Czech Republic, Estonia, France, Georgia, Germany, Hellenic Republic, Hungary, India, Ireland, Italy, Japan, Malaysia, Mexico, New Zealand, Peru, Philippines, Poland, Portuguese Republic, Romania, State of Israel

Contacts

Public ContactKazushige Hibi

Astrazeneca K.K

RD-clinical-information-Japan@astrazeneca.com+81-6-4802-3533

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: May 30, 2026