NCT06764186

Brief Summary

The purpose of this study is to evaluate the effectiveness and safety of capivasertib + fulvestrant treatment administration in patients with locally advanced (inoperable) or metastatic HR+ / HER2- breast cancer with PIK3CA/AKT1/PTEN-altered following recurrence or progression on or after endocrine therapy and CDK4/6 inhibitor.

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
101

participants targeted

Target at P25-P50 for phase_3

Timeline
20mo left

Started Jan 2025

Typical duration for phase_3

Geographic Reach
1 country

17 active sites

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress45%
Jan 2025Dec 2027

First Submitted

Initial submission to the registry

November 28, 2024

Completed
1 month until next milestone

Study Start

First participant enrolled

January 7, 2025

Completed
1 day until next milestone

First Posted

Study publicly available on registry

January 8, 2025

Completed
3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2027

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2027

Last Updated

April 8, 2026

Status Verified

April 1, 2026

Enrollment Period

3 years

First QC Date

November 28, 2024

Last Update Submit

April 7, 2026

Conditions

Keywords

LuminalPIK3CA/AKT1/PTENPI3K/AKT pathwaycapivasertibHR+ / HER2-fulvestrant

Outcome Measures

Primary Outcomes (1)

  • Time to next treatment (TTNT)

    Time to next treatment (TTNT1 is defined as the time from the date of first dose of capivasertib+fulvestrant until the first subsequent anti-cancer therapy after discontinuation of study treatment or death due to any cause).

    From start of date of first dose of capivasertib+fulvestrant treatment to date of the first subsequent anti-cancer therapy or death or up to within approximately 12 months after Last Subject Inclusion

Secondary Outcomes (11)

  • Number of patients with AEs.

    From enrollment up to at least 30 days (+7 days) after last dose of capivasertib + fulvestrant treatment

  • Time to first Subsequent Chemotherapy (TFSC)

    From start of capivasertib+fulvestrant treatment to the first Subsequent Chemotherapy, death, withdrawal of consent or the end of study (approximately 24 months)

  • Progression-free survival (PFS)

    From date of first dose of Capivasertib + fulvestrant until date of disease progression, death, withdrawal of consent or the end of study (approximately 24 months)

  • Objective Response Rate (ORR)

    From start of capivasertib+fulvestrant treatment to progression/death or up to 6 months after Last Subject Inclusion

  • Overall survival (OS)

    From date of first dose of capivasertib + fulvestrant treatment until death, withdrawal of consent, or the end of the study (approximately 24 months).

  • +6 more secondary outcomes

Study Arms (1)

Capivasertib + fulvestrant

EXPERIMENTAL

Fulvestrant: 2 intramuscular injections of 500 mg given on Day 1 of Weeks 1 and 3 of cycle 1, and then on Day 1, Week 1 of each cycle thereafter. Capivasertib: 400 mg (2 oral tablets) BD given on an intermittent weekly dosing schedule. Dosed on Days 1 to 4 in each week of a 28-day treatment cycle.

Drug: FulvestrantDrug: Capivasertib

Interventions

2 intramuscular injections of 500 mg given on Day 1 of Weeks 1 and 3 of cycle 1, and then on Day 1, Week 1 of each cycle thereafter.

Capivasertib + fulvestrant

400 mg (2 oral tablets) BD given on an intermittent weekly dosing schedule. Dosed on Days 1 to 4 in each week of a 28-day treatment cycle

Capivasertib + fulvestrant

Eligibility Criteria

Age18 Years - 130 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Histologically confirmed HR+/HER2- breast cancer (primary or metastatic):
  • HR+ defined as ER+ with or without PRg+
  • HER2- defined as IHC 0 or 1+, or IHC 2+/ISH-
  • Patient with tumours harbouring at least one PIK3CA/AKT1/PTEN qualifying alteration detected by a validated test (including NGS on tissue, cell block, or if tissue/cell block is not available, on ctDNA, as per protocol requirements. If alteration is initially detected by a method other than NGS, NGS on tissue/cell block must be performed within 45 days unless not available, which must be documented.)
  • Metastatic or locally advanced disease with radiological or objective evidence of recurrence or progression.
  • Patients must have received treatment with an ET in combination with CDK4/6i and have:
  • Radiological evidence of breast cancer recurrence or progression while on, or within 12 months of the end of (neo)adjuvant treatment with an ET with CDK4/6i, OR
  • Radiological evidence of progression while on prior ET with CDK4/6i administered as a treatment line for locally advanced or metastatic breast cancer.
  • Informed consent
  • Eastern Cooperative Oncology Group (ECOG)/ World Health Organisation (WHO) performance status ≤ 2 at enrollment (not more than 20% of patients with ECOG PS2 will be allowed).
  • Reproduction:
  • Women of childbearing potential (WOCBP) patients with ovarian suppression induced by LHRH agonist should agree to use 2 forms of highly effective methods of accepted contraception to prevent pregnancy.
  • Male patients should use barrier contraception.

You may not qualify if:

  • History of another primary malignancy except for malignancy treated with curative intent with no known active disease ≥2 years before the first dose of study intervention and of low potential risk for recurrence.
  • Disease burden making the patient ineligible for endocrine therapy per the investigator judgement.
  • Unresolved toxicities from prior therapy greater than CTCAE grade 1.
  • Leptomeningeal metastases or symptomatic, unstable, or steroid-dependent brain metastases.
  • HbA1c ≥8.0% (63.9 mmol/mol).
  • Inadequate bone marrow reserve or organ function.
  • Severe or uncontrolled systemic diseases, uncontrolled hypertension, active infections including hepatitis B, hepatitis C, HIV, and confirmed COVID-19.
  • Known abnormalities in coagulation.
  • Refractory nausea, vomiting, malabsorption syndrome, chronic gastrointestinal diseases, inability to swallow formulated product, or significant bowel resection.
  • Previous allogenic bone marrow or solid organ transplant.
  • Known immunodeficiency syndrome.
  • Unknown or non-altered PIK3CA/AKT1/PTEN-status.
  • Evidence of dementia altered mental status or any psychiatric condition.
  • Pregnant women.
  • Participants with significant QT interval prolongation or a history of related cardiac conditions, including arrhythmias or recent cardiac procedures.
  • +6 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (17)

Research Site

Alicante, 03010, Spain

Location

Research Site

Barcelona, 08003, Spain

Location

Research Site

Barcelona, 08035, Spain

Location

Research Site

Barcelona, 08036, Spain

Location

Research Site

Bilbao (Vizcaya), 48013, Spain

Location

Research Site

Córdoba, 14004, Spain

Location

Research Site

Donostia / San Sebastian, 20014, Spain

Location

Research Site

El Palmar, 30120, Spain

Location

Research Site

Girona, 17007, Spain

Location

Research Site

Madrid, 28041, Spain

Location

Research Site

Oviedo, 33011, Spain

Location

Research Site

Palma deMallorca, 07010, Spain

Location

Research Site

Salamanca, 37007, Spain

Location

Research Site

Santander, 39008, Spain

Location

Research Site

Seville, 41073, Spain

Location

Research Site

Valencia, 46026, Spain

Location

Research Site

Zaragoza, 50009, Spain

Location

MeSH Terms

Conditions

Breast Neoplasms

Interventions

Fulvestrantcapivasertib

Condition Hierarchy (Ancestors)

Neoplasms by SiteNeoplasmsBreast DiseasesSkin DiseasesSkin and Connective Tissue Diseases

Intervention Hierarchy (Ancestors)

EstradiolEstrenesEstranesSteroidsFused-Ring CompoundsPolycyclic CompoundsEstradiol CongenersGonadal Steroid HormonesGonadal HormonesHormonesHormones, Hormone Substitutes, and Hormone Antagonists

Study Design

Study Type
interventional
Phase
phase 3
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

November 28, 2024

First Posted

January 8, 2025

Study Start

January 7, 2025

Primary Completion (Estimated)

December 31, 2027

Study Completion (Estimated)

December 31, 2027

Last Updated

April 8, 2026

Record last verified: 2026-04

Data Sharing

IPD Sharing
Will share

Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal Vivli.org. All requests will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure. Yes, indicates that AZ are accepting requests for IPD, but this does not mean all requests will be shared.

Shared Documents
STUDY PROTOCOL, SAP
Time Frame
AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA PhRMA Data Sharing Principles. For details of our timelines, please rerefer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.
Access Criteria
When a request has been approved AstraZeneca will provide access to the anonymized individual patient-level data via secure research environment Vivli.org. Signed Data Usage Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information.
More information

Locations