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Breast CancerPhase 2EPIK-B4NCT04899349

Study of Safety and Efficacy of Dapagliflozin + Metformin XR Versus Metformin XR in Participants With HR+, HER2-, Advanced Breast Cancer While on Treatment With Alpelisib and Fulvestrant

A Phase 2 study testing Alpelisib, Fulvestrant and Metformin XR in people with Breast Cancer, run by Novartis Pharmaceuticals at 2 sites in 2 countries.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

This study was designed to assess the safety and efficacy of the combination of dapagliflozin plus metformin extended release (XR) compared with metformin XR during treatment with alpelisib plus fulvestrant in participants with Hormone Receptor (HR)-positive, Human Epidermal growth factor Receptor-2 (HER2)-negative… Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Breast Cancer
What is being tested?
Alpelisib, Fulvestrant and Metformin XR
Could I receive a placebo?
No, everyone receives an active treatment
How many people
2 participants
Where
2 sitesin 2 countries
Study dates
6 Apr 2022to 10 May 2023
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Participant had a histologically and/or cytologically confirmed diagnosis of estrogen receptor positive (ER+) and/or progesterone receptor positive (PgR+) breast cancer by a local laboratory.
  • Participant had a PIK3CA mutation(s) present in the tumor prior to enrollment.
  • Participant had prior treatment with an endocrine-based treatment (e.g. letrozole, anastrozole, exemestane, fulvestrant, or oral SERD) and may have fallen into one of the following categories:
  • Relapsed with documented evidence of progression while on (neo) adjuvant endocrine-based therapy or within 12 months from completion of (neo) adjuvant endocrine-based therapy with no treatment for metastatic disease.
  • Relapsed with documented evidence of progression more than 12 months from completion of (neo) adjuvant endocrine-based therapy and then subsequently progressed with documented evidence of progression while on or after only one line of endocrine-based therapy for metastatic disease.
  • Newly diagnosed advanced breast cancer, then relapsed with documented evidence of progression while on or after only one line of endocrine-based therapy.
Show all 11Show fewer
  • Note: Participants with newly diagnosed endocrine-based treatment naïve advanced breast cancer were NOT included in the study.
  • Participants might or might not have received prior CDK4/6i therapy. If prior CDK4/6i therapy was administered, it may have been in the adjuvant or metastatic setting.
  • If female, the participant was postmenopausal.
  • Participant had an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
  • Participant had adequate bone marrow and organ function.

Who cannot join

  • Participant relapsed with documented evidence of progression more than 12 months from completion of (neo) adjuvant endocrine therapy with no treatment for metastatic disease.
  • Participant had more than 1 line of prior treatment in the metastatic setting.
  • Participant had received prior treatment with chemotherapy (except for neoadjuvant/adjuvant chemotherapy), any PI3K, Mammalian Target of Rapamycin (mTOR) or Protein Kinase B (Akt) inhibitor.
  • Participant had inflammatory breast cancer at screening.
  • Participants with an established diagnosis of diabetes mellitus type I or participants with type II diabetes mellitus requiring antihyperglycemic therapy.
  • Participant had a history of acute pancreatitis within 1 year of screening or a past medical history of chronic pancreatitis.
  • Participant had currently documented pneumonitis/interstitial lung disease.
  • Participant had a history of severe cutaneous reaction, such as Steven-Johnson Syndrome (SJS), erythema multiforme (EM), Toxic Epidermal Necrolysis (TEN) or Drug Reaction with Eosinophilia and Systemic Syndrome (DRESS).

Trial locations and contacts

2 sites in 2 countries.

2 sites in 2 countries

United States1 site
  • Washington Uni School of Med Siteman Cancer Center

    St Louis, Missouri, 63110

Other trials in United States

Malaysia1 site
  • Novartis Investigative Site

    Kuala Lumpur, 59100

Other trials in Malaysia

About this study

Official title: EPIK-B4: A Phase II, Multicenter, Randomized, Open-label, Active-controlled Study to Assess the Safety and Efficacy of Dapagliflozin + Metformin XR Versus Metformin XR During Treatment With Alpelisib (BYL719) in Combination With Fulvestrant in Participants With HR+, HER2-, Advanced Breast Cancer With a PIK3CA Mutation Following Progression on/After Endocrine-based Therapy

This study was designed to assess the safety and efficacy of the combination of dapagliflozin plus metformin extended release (XR) compared with metformin XR during treatment with alpelisib plus fulvestrant in participants with Hormone Receptor (HR)-positive, Human Epidermal growth factor Receptor-2 (HER2)-negative advanced breast cancer with a Phosphoinositide-3-Kinase Catalytic subunit Alpha (PIK3CA) mutation following progression on or after endocrine-based therapy.

Read the detailed description

This was a multicenter, randomized, open-label, active-controlled trial, stratified by diabetic status at baseline (i.e., normal vs prediabetic/diabetic based on fasting plasma glucose (FPG) and/or Hemoglobin A1c (HbA1c) laboratory values). The study included only participants with at least one baseline risk factor for the development of severe hyperglycemia which were diabetes (FPG ≥ 126 milligram (mg)/deciliter (dL) or ≥ 7.0 millimole (mmol)/liter (L) and/or HbA1c ≥ 6.5%), prediabetes (FPG ≥ 100 mg/dL to < 126 mg/dL or 5.6 to < 7.0 mmol/L and/or HbA1c 5.7 to < 6.5%), obesity (body mass index [BMI] ≥ 30) and age (≥ 75 years).

The planned duration of treatment with alpelisib and fulvestrant was 12 cycles (28 days in each cycle) or until disease progression, unacceptable toxicity, or discontinuation from study treatment for any other reason, whichever came first.

Approximately 66 participants in each treatment arm were planned to be randomized to receive the combination of alpelisib and fulvestrant with either dapagliflozin plus metformin extended release (XR) or metformin XR alone. As a result of the early termination of the study due to emerging data demonstrating the impact of prophylactic metformin and slow recruitment, only 2 participants were enrolled in the study.

Conditions
Breast Cancer
Being tested
Alpelisib, Fulvestrant, Metformin XR, Dapagliflozin + metformin XR, Dapagliflozin
Keywords
Alpelisib, Fulvestrant, Metformin XR, Dapagliflozin + metformin XR, Advanced breast cancer, Phase II, HR+, HER2-, PIK3CA, Hyperglycemia
Medical subject headings
Breast Neoplasms, Hereditary Sensory and Autonomic Neuropathies, Hyperglycemia

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • AlpelisibDrug

    Alpelisib (tablets) administered at 300mg orally once daily on a continuous dosing schedule starting on Cycle 1 Day 8 in a 28 days cycle.

  • FulvestrantDrug

    Fulvestrant (prefilled syringe) 500mg administered intramuscularly at Cycle 1 Day 1 and 15 after randomization and then at Day 1 of each subsequent cycle during the randomized treatment phase.

  • Metformin XRDrug

    Metformin XR (tablets) administered at a starting dose of 500mg orally once daily on a continuous dosing schedule starting on Cycle 1 Day 1 in a 28 days cycle. Dose titration from 500 mg once a day to 2000 mg once a day.

  • Dapagliflozin + metformin XRDrug

    Dapagliflozin + metformin XR administered as a single tablet combination at a starting dose of 5 mg dapagliflozin + 500 mg metformin XR orally once daily on a continuous dosing schedule starting on Cycle 1 Day 1 in a 28 days cycle. Dose titration from 5 mg dapagliflozin + 500 mg metformin XR orally once daily to 10 mg dapagliflozin + 2000 mg metformin XR once daily

  • DapagliflozinDrug

    Dapagliflozin (tablet) at a starting dose of 5mg orally once daily on a continuous dosing schedule starting on Cycle 1 Day 1 in a 28 days cycle. Dose titration from 5 mg to 10 mg once daily

Study groups in NCT04899349
Study groupRoleWhat they receive
Alpelisib + Fulvestrant + Dapagliflozin + Metformin XRExperimentalAlpelisib 300mg administered orally once daily starting at Cycle 1 Day 8 in combination with fulvestrant 500mg intramuscular at Cycle 1 Day 1 and 15 and then at Day 1 of each subsequent cycle. Participants also received a combination treatment of dapagliflozin+metformin XR (as a single tablet or as two separate tablets, at the discretion of the investigator) at a starting dose of 5 mg dapagliflozin + 500 mg metformin XR orally once daily which could be titrated to a maximum dose of 10 mg dapagliflozin + 2000 mg metformin XR once daily.
Receives: Drug: Alpelisib; Drug: Fulvestrant; Drug: Metformin XR; Drug: Dapagliflozin + metformin XR; Drug: Dapagliflozin
Alpelisib + Fulvestrant + Metformin XRActive comparatorAlpelisib 300mg administered orally once daily starting at cycle 1 Day 8 in combination with fulvestrant 500mg intramuscular at Cycle 1 Day 1 and 15 and then at Day 1 of each subsequent cycle. Participants also received metformin XR 500mg orally once daily which could be titrated to a maximum dose of 2000 mg once daily.
Receives: Drug: Alpelisib; Drug: Fulvestrant; Drug: Metformin XR

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants With Hyperglycemia Grade ≥ 3 Over the First Eight Weeks of Alpelisib Plus Fulvestrant Treatment

    Number of participants with severe hyperglycemia over the first eight weeks of alpelisib plus fulvestrant treatment. Severe hyperglycemia (Grade ≥ 3) is defined as any glucose laboratory values > 250 milligram (mg)/ deciliter (dL) (> 13.9 millimole (mmol)/ liter (L))

    Measured: From Cycle 1 Day 8 to Cycle 3 Day 8 (first eight weeks of treatment with alpelisib). Cycle = 28 days.

Secondary outcomes (4)
  1. Progression-free Survival (PFS) Based on Local Investigator Assessment

    PFS was defined as the time from the date of randomization to the date of the first documented progression or death due to any cause. PFS was assessed via a local investigator assessment according to RECIST 1.1. If a subject did not have an event, PFS was censored at the date of last adequate tumor assessment.

    The PFS distribution was using the Kaplan-Meier method, and the Kaplan-Meier median and 95% confidence intervals of the medians was presented.

    Measured: From the date of randomization to the date of the first documented progression or death due to any cause, whichever comes first, assessed up to a maximum duration of 7.4 months

  2. Overall Response Rate (ORR) With Confirmed Response Based on Local Investigator Assessment as Per RECIST 1.1.

    ORR with confirmed response was defined as the percentage of participants with best overall response of confirmed complete response (CR) or confirmed partial response (PR) based on local investigator's assessment according to RECIST 1.1.

    CR: Disappearance of all non-nodal target lesions and all non-target lesions. In addition, any pathological lymph nodes assigned as target lesions and all lymph nodes assigned as non-target lesions must have a reduction in short axis to < 10 mm.

    PR: At least a 30% decrease in the sum of diameter of all target lesions, taking as reference the baseline sum of diameters.

    Measured: Up to 7.4 months

  3. Clinical Benefit Rate (CBR) With Confirmed Response Based on Local Investigator Assessment as Per RECIST 1.1

    Clinical benefit rate with confirmed response was defined as the percentage of participants with a best overall response of confirmed CR or confirmed PR or stable disease (SD) or Non-CR/Non-progressive disease (PD) lasting more than 24 weeks based on local investigator assessment as per RECIST 1.1.

    CR: Disappearance of all non-nodal target lesions and all non-target lesions. In addition, any pathological lymph nodes assigned as target lesions and all lymph nodes assigned as non-target lesions must have a reduction in short axis to < 10 mm.

    PR: At least a 30% decrease in the sum of diameter of all target lesions, taking as reference the baseline sum of diameters.

    SD: Neither sufficient shrinkage to qualify for PR or CR nor an increase in lesions which would qualify for progressive disease.

    Measured: Up to 7.4 months

  4. Number of Participants With Dose Modifications

    Number of participants with dose interruptions and dose reductions

    Measured: From first dose of study medication up to 30 days after last dose of study medication, assessed up to 7.4 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted24 May 2021
  2. Study start6 Apr 2022
  3. Primary completion10 May 2023
  4. Study completion10 May 2023

Why it stopped: Study was early terminated due to slow recruitment and emerging data showing that prophylactic use of metformin may prevent or reduce the incidence of all-grades alpelisib-related hyperglycemia. The decision was not driven by safety concerns

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
2 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04899349
Sponsor's protocol ID
CBYL719C2202
Acronym
EPIK-B4
Status last verified
Oct 2024
First submitted
21 May 2021
Last updated
9 Oct 2024
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: Novartis is committed to sharing with qualified external researchers, access to patient-level data and supporting clinical documents from eligible studies. These requests are reviewed and approved by an independent review panel on the basis of scientific merit. All data provided is anonymized to respect the privacy of patients who have participated in the trial in line with applicable laws and regulations. This trial data availability is according to the criteria and process described on www.clinicalstudydatarequest.com

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Alpelisib, Fulvestrant and Metformin XR in people with Breast Cancer, run by Novartis Pharmaceuticals at 2 sites in 2 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 11 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 9 Oct 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in United States, Malaysia. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 12 Dec 2023). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants With Hyperglycemia Grade ≥ 3 Over the First Eight Weeks of Alpelisib Plus Fulvestrant Treatment (time frame: From Cycle 1 Day 8 to Cycle 3 Day 8 (first eight weeks of treatment with alpelisib). Cycle = 28 days.). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Oct 2024.

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