A Study of Taselisib + Fulvestrant Versus Placebo + Fulvestrant in Participants With Advanced or Metastatic Breast Cancer Who Have Disease Recurrence or Progression During or After Aromatase Inhibitor Therapy (SANDPIPER)
Breast Cancer

About this trial
This is an interventional treatment trial for Breast Cancer
Eligibility Criteria
Inclusion Criteria:
- Postmenopausal women with histologically or cytologically confirmed locally advanced or metastatic estrogen receptor (ER) positive breast cancer
- Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
- Participants for whom endocrine therapy (example [e.g.], fulvestrant) is recommended and treatment with cytotoxic chemotherapy is not indicated at time of entry into the study
- Radiologic/objective evidence of recurrence or progression to the most recent systemic therapy for breast cancer
- Radiologic/objective evidence of breast cancer recurrence or progression while on or within 12 months of the end of adjuvant treatment with an aromatase inhibitor (AI), or progression while on or within 1 month of the end of prior AI treatment for locally advanced or metastatic breast cancer
- Measurable disease via Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1 (v1.1) or non-measurable, evaluable disease with at least one evaluable bone lesion via RECIST v1.1
- Consent to provide a formalin-fixed, paraffin-embedded (FFPE) tumor tissue block (preferred) or a minimum of 20 (25 preferred) freshly cut unstained tumor slides from the most recently collected, available tumor tissue for oncogene that encodes for phosphatidylinositol-4,5-bisphosphate 3-kinase (PIK3CA)-mutation testing
- A valid cobas PIK3CA mutation result by central testing is required
- Adequate hematologic and end-organ function within 28 days prior to treatment initiation
Exclusion Criteria:
- Human epidermal growth factor receptor 2 (HER2)-positive disease by local laboratory testing (immunohistochemistry 3 positive [IHC 3+] staining or in situ hybridization positive)
- Prior treatment with fulvestrant
- Prior treatment with a phosphatidylinositol 3-kinase (PI3K) inhibitor, mammalian target of rapamycin (mTOR) inhibitor (e.g. everolimus), or protein kinase B (AKT) inhibitor
- Prior anti-cancer therapy within 2 weeks prior to Day 1 of Cycle 1
- Prior radiation therapy within 2 weeks prior to Day 1 of Cycle 1
- All acute treatment-related toxicity must have resolved to Grade less than or equal to (</=) 1 or be deemed stable by the Investigator
- Prior treatment with greater than (>) 1 cytotoxic chemotherapy regimen for metastatic breast cancer
- Concurrent hormone replacement therapy
- Known untreated or active central nervous system (CNS) metastases
- Type 1 or Type 2 diabetes mellitus requiring anti-hyperglycemic medications
- History of inflammatory bowel disease or active bowel inflammation
- Clinically significant cardiac or pulmonary dysfunction
- Clinically significant history of liver disease, including cirrhosis, current alcohol abuse, or current known active infection with human immunodeficiency virus (HIV), hepatitis B or C virus
Sites / Locations
- Arizona Oncology
- Arizona Oncology Associates, P.C.
- Georgia Cancer Specialists - Northside
- Northwest Georgia Oncology Centers, a Service of WellStar Cobb Hospital
- Ingalls Hospital
- Maryland Oncology Hematology
- Dana Farber Can Ins
- Mercy Hospitals East Communities d/b/a Mercy Hospital St. Louis
- MSKCC at Basking Ridge
- John Theurer Cancer Ctr at Hackensack Univ Medical Ctr
- Memorial Sloan-Kettering; Cancer Center
- Memorial Sloan Kettering Cancer Center; Memorial Sloan Kettering; at Westchester
- Memorial Sloan Kettering Cancer Center
- Memorial Sloan Kettering Nassau
- Oregon Health & Science University; Knight Cancer Institute, Community Hematology Oncology
- Pinnacle Health
- Liverpool Hospital; Cancer Therapy Centre
- Macquarie University Hospital
- Newcastle Mater Misericordiae Hospital; Oncology
- Mater Hospital; Oncology
- Austin Hospital; Medical Oncology
- Sunshine Hospital; Oncology Research
- St John of God Murdoch Hospital; Oncology West
- Lkh-Univ. Klinikum Graz; Klinik Für Innere Medizin I
- Tiroler Landeskrankenanstalten Ges.M.B.H.; Abt. Für Gynäkologie
- Ordensklinikum Linz Barmherzige Schwestern; Abt. fur Innere Medizin 1
- Medizinische Universität Wien; Univ.Klinik für Innere Medizin I
- University Clinical Center of the Republic of Srpska
- Clinic of Oncology, University Clinical Center Sarajevo
- Complex Oncological Center - Plovdiv, EOOD
- MHAT Nadezhda
- SHATO - Sofia
- SHATOD Dr. Marko Antonov Markov-Varna, EOOD
- Cross Cancer Institute
- British Columbia Cancer Agency (Bcca) - Vancouver Cancer Centre
- Grand River Hospital
- The Ottawa Hospital Cancer Centre; Oncology
- Sunnybrook Health Science Centre
- McGill University; Sir Mortimer B Davis Jewish General Hospital; Oncology
- Hospital Du Saint-Sacrement
- the First Hospital of Jilin University
- Jilin Cancer Hospital
- Jiangsu Cancer Hospital
- Fudan University Shanghai Cancer Center
- Zhejiang Cancer Hospital
- Clinica del Country
- Oncomedica S.A.
- University Hospital; Oncology and Radiotherapy
- Fakultni nemocnice Olomouc; Onkologicka klinika
- Vseobecna fakultni nemocnice v Praze
- KYS Sadesairaala; Syopatautien poliklinikka
- Turku Uni Central Hospital; Oncology Clinics
- Centre Jean Perrin; Hopital De Semaine
- Centre Georges François Leclerc; Service Pharmacie, Bp 77980
- Hopital Prive Drome Ardeche; Chir 2A 2B
- CHD Vendée
- Hopital Dupuytren; Oncologie Medicale
- Institut régional du Cancer Montpellier
- Institut Curie; Oncologie Medicale
- Ch Lyon Sud; Onco Secteur Jules Courmont
- Pole de Cancerologie Prive Strasbourgeois
- Centre Alexis Vautrin; Oncologie Medicale
- Hochwaldkrankenhaus; Abt.Gynäkologie Geburtshilfe u.Senologie
- Praxisklinik Krebsheilkunde für Frauen / Brustzentrum (Dres. Kittel/Klare)
- Onkologische Schwerpunktpraxis Kurfürstendamm
- Universitätsklinikum Essen; Zentrum Für Frauenheilkunde
- Kooperatives Mammazentrum Hamburg Krankenhaus Jerusalem
- Klinikum der Universität München; Frauenklinik - Onkologie II
- Klinikum Mutterhaus der Borromäerinnen, Innere Medizin I
- Alexandras General Hospital of Athens; Oncology Department
- IASO General Hospital of Athens
- Univ General Hosp Heraklion; Medical Oncology
- University Hospital of Patras Medical Oncology
- Euromedical General Clinic of Thessaloniki; Oncology Department
- Papageorgiou General Hospital; Medical Oncology
- Istituto Nazionale Tumori Irccs Fondazione g. PASCALE;U.O.C. Oncologia Medica Senologica
- ARCISPEDALE S. MARIA NUOVA - REGGIO EMILIA; Struttura Semplice Coordinamento Breast Unit Integrata
- A.O. Universitaria S. Maria Della Misericordia Di Udine; Oncologia
- IRCCS Istituto Nazionale Per La Ricerca Sul Cancro (IST); Oncologia Medica A
- Istituto Europeo Di Oncologia
- Centro Catanese Di Oncologia; Oncologia Medica
- Azienda Ospedaliero-Universitaria Careggi; SOD Radioterapia
- Azienda USL 9 Grosseto; Dipartimento Politiche del Farmaco
- Azienda usl 5 Di Pisa-Ospedale Di Pontedera;U.O. Oncologia
- AZ. Usll12 Veneziana-Ospedale Dell'angelo;Oncologia Medica
- Inje university Haeundae Paik Hospital
- Chungbuk National University Hospital
- National Cancer Center
- Korea University Anam Hospital
- Seoul National University Hospital
- Severance Hospital, Yonsei University Health System
- Asan Medical Center
- Samsung Medical Center
- Ulsan University Hosiptal
- Iem-Fucam
- Instituto Nacional De Cancerologia; Oncology; Tumores Mamarios
- Consultorio de Medicina Especializada; Dentro de Condominio San Francisco
- Hospital San Jose Del Tec. de Monterrey; Oncology
- Oaxaca Site Management Organization
- Medisch Centrum Alkmaar
- Ziekenhuis Rijnstate
- Instituto Nacional de Enfermedades Neoplasicas
- Clinica Internacional, Sede San Borja; Unidad de Investigacion de Clínica Internacional
- Oncocenter Peru S.A.C.; Oncosalud
- Instituto Regional de Enfermedades Neoplasicas - IREN Norte
- Bialostockie Centrum Onkologii; Oddzial Onkologii Klinicznej
- Centrum Onkologii w Bydgoszczy; Oddzial Kliniczny Onkologii
- Uniwersyteckie Centrum Kliniczne, Klinika Onkologii i Radioterapii
- Przychodnia Lekarska KOMED, Roman Karaszewski
- Szpital Uniwersytecki w Krakowie, Oddział Kliniczny Kliniki Onkologii
- Woj.Wielospecjalistyczne Centrum Onkologii i Traumatologii; Oddz.Hematologii Pododz.Chemioterapii
- Centrum Onkologii Ziemi LUBELSKIEJ im. Sw Jana z Dukli, I oddz. Chemioterapii
- Zachodniopomorskie Centrum Onkologii, Osrodek Innowacyjnosci, Rozwoju i Badan Klinicznych
- Centrum Onkologii - Instytut im. Marii Skłodowskiej-Curie Klinika Nowotworów Piersi i Chirurgii
- Wojewodzki Szpital Specjalistyczny; Osrodek Badawczo-Rozwojowy, Oddzial Chemioterapii
- Hospital Garcia de Orta; Servico de Oncologia Medica
- IPO de Lisboa; Servico de Oncologia Medica
- Hospital da Luz; Departamento de Oncologia Medica
- Hospital de Santa Maria; Servico de Oncologia Medica
- IPO do Porto; Servico de Oncologia Medica
- Institut of Oncology Al. Trestioreanu Bucharest; Oncology Department
- Prof. Dr. I. Chiricuta Institute of Oncology
- Oncology Center Sf. Nectarie
- Euroclinic Center of Oncology SRL
- Moscow City Oncology Hospital #62
- Regional Clinical Oncology Dispensary; Surgery Dept, Thoracic
- Ivanovo Regional Oncology Dispensary
- Clinical Oncology Dispensary of Ministry of Health of Tatarstan
- State Inst. Of Healthcare Orenburg Regional Clinical Oncology Dis
- S-Pb clinical scientific practical center of specialized kinds of medical care (oncological)
- Institute for Onc/Rad Serbia
- Complejo Hospitalario Universitario de Santiago (CHUS) ; Servicio de Oncologia
- Hospital Universitario Puerta de Hierro; Servicio de Oncologia
- Hospital Universitario de Canarias;servicio de Oncologia
- Hospital de Cruces; Servicio de Oncologia
- Hospital Universitari Vall d'Hebron
- Hospital Clínic i Provincial; Servicio de Hematología y Oncología
- Centro Oncologico MD Anderson Internacional; Servicio de Oncologia
- Hospital Ramon y Cajal; Servicio de Oncologia
- HOSPITAL DE MADRID NORTE SANCHINARRO- CENTRO INTEGRAL ONCOLOGICO CLARA CAMPAL; Servicio de Oncologia
- Fundación IVO
- Hospital Universitario Miguel Servet; Servicio Oncologia
- Uni Hospital Linkoeping; Dept. of Oncology
- Sodersjukhuset; Onkologkliniken
- Akademiska sjukhuset, Onkologkliniken
- Koo Foundation Sun Yat-Sen Cancer Center; Hemato-Oncology
- VETERANS GENERAL HOSPITAL; Department of General Surgery
- National Taiwan Uni Hospital; General Surgery
- Mackay Memorial Hospital; Dept of Surgery
- Department of Surgery, King Chulalongkorn Memorial Hospital
- Ramathibodi Hospital; Dept of Med.-Div. of Med. Onc
- Maharaj Nakorn Chiang Mai Hospital; Department of Surgery/Head Neck and Breast Unit; Clinical Trial
- Baskent University Adana Dr. Turgut Noyan Practice and Research Hospital; Medical Oncology
- Trakya University Medical Faculty Research And Practice Hospital Medical Oncology Department
- Istanbul Uni Cerrahpasa Medical Faculty Hospital; Medical Oncology
- Ege Uni Medical Faculty; Oncology Dept
- Hacettepe Uni Medical Faculty Hospital; Oncology Dept
Arms of the Study
Arm 1
Arm 2
Experimental
Placebo Comparator
Taselisib + Fulvestrant
Placebo + Fulvestrant
Participants received taselisib 4 milligrams (mg) taken orally QD beginning at Cycle 1, Day 1 and fulvestrant 500 mg by IM injection at Cycle 1, Days 1 and 15, and then on Day 1 of each subsequent 28-day cycle until disease progression, unacceptable toxicity, or study termination by the Sponsor.
Participants received placebo taken orally once daily (QD) beginning at Cycle 1, Day 1, and fulvestrant 500 mg administered by intramuscular (IM) injection at Cycle 1, Days 1 and 15, and then on Day 1 of each subsequent 28-day cycle until disease progression, unacceptable toxicity, or study termination by the Sponsor.