Status:

ACTIVE_NOT_RECRUITING

SEQUence of Endocrine Therapy in Advanced Luminal Breast Cancer (SEQUEL-Breast)

Lead Sponsor:

Borstkanker Onderzoek Groep

Collaborating Sponsors:

Novartis Pharma B.V.

BOOG Study Center

Conditions:

Neoplasm, Breast

Congenital, Familial and Genetic Disorders

Eligibility:

All Genders

18+ years

Phase:

PHASE2

Brief Summary

The study is a nationwide, multicenter single-arm phase 2 study. The current phase 2 study investigates the efficacy of the combination of fulvestrant and alpelisib directly after progression on fulve...

Eligibility Criteria

Inclusion

  • Adult women and men (≥ 18 years of age) with proven diagnosis of adenocarcino-ma of the breast withlocoregional recurrent or metastatic disease not amenable to resection or radiation therapy with curative intent andfor whom chemotherapy is not clinically indicated
  • Estrogen receptor (ER) expression \>10% and/or progesterone receptor (PR) expression \>10% breast cancerbased on local la-boratory results. Tumor must be HER2- as defined by ASCO-CAP guidelines
  • Patients must have progressed on fulvestrant as a preceding treatment line (as first or second line therapy)
  • Previous treatment with a CDK4/6 inhibitor in the advanced setting
  • The presence of an activating PIK3CA mutation
  • Evaluable disease\* as defined per RECIST v.1.1
  • Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0, 1 or 2

Exclusion

  • Patients with advanced, symptomatic, visceral spread, who are at risk of life-threatening complications in theshort term
  • Known active uncontrolled or symptomatic CNS metastases, carcinomatous meningitis, or leptomeningealdisease as indicated by clinical symptoms, cerebral edema, and/or progressive growth
  • Prior treatment with a PI3K /AKT/mTOR inhibitor
  • Type 1 diabetes or uncontrolled type 2 diabetes (Hba1C \> 68 mmol/mol)
  • Clinically significant, uncontrolled heart disease and/or recent cardiac events

Key Trial Info

Start Date :

June 2 2022

Trial Type :

INTERVENTIONAL

Allocation :

ESTIMATED

End Date :

March 1 2028

Estimated Enrollment :

130 Patients enrolled

Trial Details

Trial ID

NCT05392608

Start Date

June 2 2022

End Date

March 1 2028

Last Update

September 17 2025

Active Locations (25)

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Page 1 of 7 (25 locations)

1

Jeroen Bosch Ziekenhuis

's-Hertogenbosch, Netherlands

2

Noordwest Ziekenhuisgroep

Alkmaar, Netherlands

3

Ziekenhuisgroep Twente

Almelo, Netherlands

4

Meander Medisch Centrum

Amersfoort, Netherlands