Advanced Breast CancerPhase 3VERITAC-2NCT05654623
A Study to Learn About a New Medicine Called Vepdegestrant (ARV-471, PF-07850327) in People Who Have Advanced Metastatic Breast Cancer
A Phase 3 study testing ARV-471 and Fulvestrant in people with Advanced Breast Cancer, run by Pfizer at 312 sites in 31 countries.
Trial summary
A study to learn about a new medicine called ARV-471 (PF-07850327) in people who have advanced metastatic breast cancer. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Advanced Breast Cancer
- What is being tested?
- ARV-471 and Fulvestrant
- Type of treatment
- Pill or oral medicine, Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 624 participants
- Where
- 312 sitesin 31 countries
- Study dates
- 3 Mar 2023to 15 May 2028
- Phase
- Phase 3
- 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
- Adult participants with loco-regional recurrent or metastatic breast disease not amenable to surgical resection or radiation therapy
- Confirmed diagnosis of ER+/HER2- breast cancer
- Prior therapies for locoregional recurrent or metastatic disease must fulfill all the following criteria:
- One line of CDK4/6 inhibitor therapy in combination with endocrine therapy. Only one line of CDK4/6 inhibitor is allowed in any setting.
- ≤ 1 endocrine therapy in addition to CDK4/6 inhibitor with ET
- Most recent endocrine treatment duration must have been given for ≥6 months prior to disease progression. This may be the endocrine treatment component of the CDK4/6 inhibitor line of therapy.
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- Radiological progression during or after the last line of therapy.
- Measurable disease evaluable per Response Evaluation Criterion in Solid Tumors (RECIST) v.1.1 or non-measurable bone-only disease
- Eastern Cooperative Oncology Group (ECOG) performance status 0-1
- Participants should be willing to provide blood and tumor tissue
Who cannot join
- Participants with advanced, symptomatic visceral spread, that are at risk of life-threatening complications in the short term
- Prior treatment with:
- ARV-471, fulvestrant, elacestrant, mTOR, PI3K, AKT pathway inhibitors, PARP inhibitor for any setting
- other investigational agents (including novel endocrine therapy any SERDs, SERCAs, CERANs) for any setting
- prior chemotherapy for advanced/metastatic disease
- Inadequate liver, kidney and bone marrow function
- Active brain metastases
- Participants with significant concomitant illness
Trial locations and contacts
312 sites in 31 countries.
312 sites in 31 countries
United States87 sites
Providence Regional Cancer System - Aberdeen
Aberdeen, Washington, 98520
Florida Cancer Specialists
Altamonte Springs, Florida, 32701
Mercy Clinic Oncology and Hematology
Ballwin, Missouri, 63011
MSK Basking Ridge
Basking Ridge, New Jersey, 07920
Florida Cancer Specialists BON
Bonita Springs, Florida, 34135
Florida Cancer Specialists BCC
Bradenton, Florida, 34205
Florida Cancer Specialists LRS
Bradenton, Florida, 34211
Florida Cancer Specialists
Brandon, Florida, 33511
Hematology Oncology Associates of CNY
Camillus, New York, 13031
Florida Cancer Specialists NFM
Cape Coral, Florida, 33909
Providence Regional Cancer System- Centralia
Centralia, Washington, 98531
University of Virginia Cancer Center
Charlottesville, Virginia, 22903
University of Virginia Health System
Charlottesville, Virginia, 22908
UVA Breast Care Center
Charlottesville, Virginia, 22911
Morton Plant Hospital - BayCare Health System
Clearwater, Florida, 33756
Florida Cancer Specialists
Clearwater, Florida, 33761
MSK Commack
Commack, New York, 11725
Florida Cancer Specialists
Daytona Beach, Florida, 32117
Hematology-Oncology Associates of Central New York, PC
East Syracuse, New York, 13057
California Cancer Associates for Research and Excellence, Inc. (cCARE)
Encinitas, California, 92024
Smilow Cancer Hospital Care Center at Fairfield
Fairfield, Connecticut, 06824
Florida Cancer Specialists COL
Fort Myers, Florida, 33905
Florida Cancer Specialists GLO
Fort Myers, Florida, 33908
Orange Coast Memorial Medical Center
Fountain Valley, California, 92708
California Cancer Associates for Research and Excellence
Fresno, California, 93720
Florida Cancer Specialists
Gainesville, Florida, 32605
MSK Westchester
Harrison, New York, 10604
Hattiesburg Clinic Hematology/Oncology
Hattiesburg, Mississippi, 39401
Hope and Healing Cancer Services
Hinsdale, Illinois, 60521
Saint Luke's Cancer Institute
Kansas City, Missouri, 64111
Providence Regional Cancer System - Lacey
Lacey, Washington, 98503
R.J. Zuckerberg Cancer Center
Lake Success, New York, 11042
Lakeland Regional Cancer Center
Lakeland, Florida, 33805
Florida Cancer Specialists
Largo, Florida, 33770
Cancer Centers of Southwest Oklahoma
Lawton, Oklahoma, 73505
Dartmouth-Hitchcock Medical Center
Lebanon, New Hampshire, 03756
Florida Cancer Specialists
Lecanto, Florida, 34461
Norton Cancer Institute - Downtown
Louisville, Kentucky, 40202
Norton Cancer Institute, Downtown
Louisville, Kentucky, 40202
Norton Hospital
Louisville, Kentucky, 40202
Norton Cancer Institute, St Matthews Campus
Louisville, Kentucky, 40207
Norton Women's & Children's Hospital
Louisville, Kentucky, 40207
Norton Brownsboro Hospital
Louisville, Kentucky, 40241
Norton Cancer Institute, Brownsboro Hospital Campus
Louisville, Kentucky, 40241
Bon Secours Memorial Regional Medical Center
Mechanicsville, Virginia, 23116
MSK Monmouth
Middletown, New Jersey, 07748
Bon Secours St. Francis Medical Center
Midlothian, Virginia, 23114
Memorial Sloan Kettering - Bergen
Montvale, New Jersey, 07645
Northern Westchester Hospital
Mount Kisco, New York, 10549
Florida Cancer Specialist And Research Institute
N. Venice, Florida, 34275
Providence Queen of the Valley Medical Center
Napa, California, 94558
Florida Cancer Specialists NGD
Naples, Florida, 34102
Smilow Cancer Hospital at Yale-New Haven
New Haven, Connecticut, 06510
Yale-New Haven Hospital
New Haven, Connecticut, 06510
University Medical Center New Orleans
New Orleans, Louisiana, 70112
Memorial Sloan Kettering Cancer Center
New York, New York, 10065
MSK Evelyn H. Lauder Breast and Imaging Center
New York, New York, 10065
Smilow Cancer Hospital Care Center at North Haven
North Haven, Connecticut, 06473
Florida Cnacer Specialists
North Port, Florida, 34286
Hematology Oncology Associates of Rockland
Nyack, New York, 10960
Florida Cancer Specialists
Ocala, Florida, 34474
Florida Cancer Specialists
Orange City, Florida, 32763
Florida Cancer Specialists
Orlando, Florida, 32806
Florida Cancer Specialists PCH
Port Charlotte, Florida, 33980
Providence Cancer Institute Franz Clinic
Portland, Oregon, 97213
Providence Portland Medical Center
Portland, Oregon, 97213
UW Medicine Valley Medical Center
Renton, Washington, 98055
Bon Secours St. Mary's Hospital
Richmond, Virginia, 23226
California Cancer Associates for Research and Excellence
San Marcos, California, 92069
Florida Cancer Specialists SAC
Sarasota, Florida, 34232
Florida Cancer Specialists SAD
Sarasota, Florida, 34236
Louisiana State University Health Sciences Shreveport
Shreveport, Louisiana, 71103
Phelps Hospital
Sleepy Hollow, New York, 10591
Mercy Research - David C. Pratt Cancer Center
St Louis, Missouri, 63141
Florida Cancer Specialists
St. Petersburg, Florida, 33705
Florida Cancer Specialists
Stuart, Florida, 34994
Olive View-UCLA Medical Center
Sylmar, California, 91342
Florida Cancer Specialists
Tampa, Florida, 33607
Florida Cancer Specialists
Tavares, Florida, 32778
Florida Cancer Specialists
The Villages, Florida, 32159
Florida Cancer Specialist
Trinity, Florida, 34655
Smilow Cancer Hospital Care Center at Trumbull
Trumbull, Connecticut, 06611
MSK Nassau
Uniondale, New York, 11553
Florida Cancer Specialists
Vero Beach, Florida, 32960
Florida Cancer Specialists
Wellington, Florida, 33414
Florida Cancer Specialists
West Palm Beach, Florida, 33401
Florida Cancer Specialists
Winter Park, Florida, 32789
China33 sites
Beijing Hospital
Beijing, Beijing Municipality, 100005
Cancer Hospital Chinese Academy of Medical Science
Beijing, Beijing Municipality, 100021
The First Hospital of Jilin University
Changchun, Jilin, 130021
The 2nd Affiliated Hospital of Dalian Medical University
Dalian, Liaoning, 116023
The First People's Hospital of Foshan
Foshan, Guangdong, 528041
Fujian Medical University Union Hospital
Fuzhou Fujian, Fujian, 350001
Sun Yat-sen University Cancer Center
Guangzhou, Guangdong, 510060
Sun Yat-sen University Cancer Center
Guangzhou, Guangdong, 510555
Sir Run Run Shaw Hospital of Zhejiang University School of Medicine
Hangzhou, Zhejiang, 310016
Zhejiang Cancer Hospital
Hangzhou, Zhejiang, 310022
The Second Affiliated hospital of Zhejiang University school of medicine
Hangzhou, Zhejiang, 310052
Harbin Medical University Cancer Hospital
Harbin, Heilongjiang, 150081
Anhui Provincial Hospital
Hefei, Anhui, 230001
Anhui Provincial Cancer Hospital
Hefei, Anhui, 230031
Shandong Cancer Hospital
Jinan, Shandong, 250117
Yunnan Province Cancer Hospital
Kunming, Yunnan, 650106
The First Affiliated Hospital of Henan University of Science &Technology
Luoyang, Henan, 471003
The First Affiliated Hospital of Nanchang University
Nanchang, Jiangxi, 330006
Nanchang People's Hospital
Nanchang, Jiangxi, 330009
Nanjing Drum Tower Hospital The Affiliated Hospital of Nanjing University Medical School
Nanjing, Jiangsu, 210031
Guangxi Medical University Affiliated Tumor Hospital
Nanning, Guangxi, 530201
Ruijin Hospital Shanghai Jiaotong University School of Medicine
Shanghai, Shanghai Municipality, 200025
Fudan University Shanghai Cancer Center
Shanghai, Shanghai Municipality, 200032
The First Hospital of China Medical University
Shenyang, Liaoning, 110001
Liaoning Cancer Hospital
Shenyang, Liaoning, 110042
Tianjin Medical University Cancer Institute & Hospital
Tianjin, Tianjin Municipality, 300060
Union Hospital Tongji Medical College Huazhong University of Science and Technology
Wuhan, Hubei, 430022
Wuhan Union Hospital Cancer Center
Wuhan, Hubei, 430022
Jinyinhu Branch of Tongji Medical College Affiliated Union Hospital, Huazhong University of Science
Wuhan, Hubei, 430040
Hubei Cancer Hospital
Wuhan, Hubei, 430079
The Second Affiliated Hospital of Xi'an Jiaotong University
Xi'an, Shaanxi, 710004
The First Affiliated Hospital of Xi'an Jiaotong University
Xi'an, Shaanxi, 710061
Henan Cancer Hospital
Zhengzhou, 450008
Spain19 sites
CHUAC-Hospital Teresa Herrera
A Coruña, A Coruña [LA Coruña], 15006
Institut Català d'Oncologia (ICO) - Badalona
Badalona, Barcelona [barcelona], 08916
Parc de Salut Mar - Hospital del Mar
Barcelona, Barcelona [barcelona], 08003
Hospital Universitari Vall d'Hebron
Barcelona, Barcelona [barcelona], 08035
Osi Bilbao-Basurto
Bilbao, Basque Country, 48013
Hospital Universitario Donostia
Donostia / San Sebastian, Gipuzkoa, 20014
Hospital General Universitario de Elche
Elche, Alicante, 03203
Hospital Universitario Virgen Nieves
Granada, 18012
Hospital Universitario San Cecilio
Granada, 18016
Institut Català d'Oncologia - L'Hospitalet
L'Hospitalet de Llobregat, Catalunya [cataluña], 08908
Hospital Universitario Arnau de Vilanova de Lleida
Lleida, Lleida [lérida], 25198
Hospital Universitario 12 de Octubre
Madrid, Madrid, Comunidad de, 28041
Hospital Universitario La Paz
Madrid, 28046
Hospital Universitario HM Sanchinarro
Madrid, 28050
Hospital Universitario Virgen de la Victoria
Málaga, Málaga, 29010
Althaia, Xarxa Assistencial Universitària de Manresa
Manresa, 8423
Salut Sant Joan de Reus-Baix Camp (Edp)
Reus, Tarragona [tarragona], 43204
Hospital Universitario Virgen Macarena
Seville, 41009
Hospital General Universitario de Valencia
Valencia, 46014
Japan18 sites
Juntendo University Hospital
Bunkyo-ku, Tokyo, 113-8431
Tokyo Metropolitan Komagome Hospital, Department of Breast Surgery
Bunkyo-ku, Tokyo, 113-8677
Chiba cancer center
Chiba, Chiba, 260-8717
National Hospital Organization Kyushu Cancer Center
Fukuoka, 811-1395
Saitama Prefectural Cancer Center
Ina-machi, Saitama, 362-0806
Sagara Hospital
Kagoshima, 892-0833
National Cancer Center Hospital East
Kashiwa, Chiba, 277-8577
Japanese Foundation for Cancer Research
Koto, Tokyo, 135-8550
Cancer Institute Hospital of JFCR
Koto-ku, Tokyo, 135-8550
Aichi Cancer Center Hospital
Nagoya, Aichi-ken, 464-8681
Nagoya University Hospital
Nagoya, Aichi-ken, 466-8560
Nagoya City University Hospital
Nagoya, Aichi-ken, 467-8602
Okayama University Hospital
Okayama, 700-8558
National Hospital Organization Hokkaido Cancer Center
Sapporo, Hokkaido, 003-0804
National Center for Global Health and Medicine
Shinjuku, Tokyo, 162-8655
Center Hospital of the National Center for Global Health and Medicine
Shinjuku-ku, Tokyo, 162-8655
Osaka University Hospital
Suita, Osaka, 565-0871
Kanagawa cancer center
Yokohama, Kanagawa, 2418515
Brazil12 sites
ONCOSITE - Centro de Pesquisa Clinica em Oncologia
Ijuí, Rio Grande do Sul, 98700-000
ANIMI - Unidade de Tratamento Oncologico
Lages, Santa Catarina, 88501001
Centro Gaucho Integrado De Oncologia, Hematologia, Ensino E Pesquisa
Porto Alegre, Rio Grande do Sul, 90110-270
Hospital Moinhos de Vento
Porto Alegre, Rio Grande do Sul, 90560032
Hospital São Lucas da PUCRS
Porto Alegre, Rio Grande do Sul, 90610-000
Centro de Pesquisa Clínica - Área Administrativa
Porto Alegre, Rio Grande do Sul, 90850-170
Hospital Mae de Deus
Porto Alegre, Rio Grande do Sul, 90880-480
Faculdade de Medicina do ABC
Santo André, São Paulo, 09060-650
A. C. Camargo Cancer Center
São Paulo, São Paulo, 01509-010
IBCC - Instituto Brasileiro de Controle do Câncer
São Paulo, 03102002
IBCC - Núcleo de Pesquisa e Ensino
São Paulo, 04014-002
Hospital Santa Rita de Cassia
Vitória, Espírito Santo, 29043-260
South Korea12 sites
National Cancer Center
Goyang-si, Kyǒnggi-do, 10408
Gachon University Gil Medical Center
Namdong-gu, Incheon-gwangyeoksi [incheon], 21565
Seoul National University Bundang Hospital
Seongnam, Kyǒnggi-do, 13620
Korea University Anam Hospital
Seoul, Seoul-teukbyeolsi [seoul], 02841
Seoul National University Hospital
Seoul, Seoul-teukbyeolsi [seoul], 03080
Severance Hospital, Yonsei University Health System
Seoul, Seoul-teukbyeolsi [seoul], 03722
Asan Medical Center
Seoul, Seoul-teukbyeolsi [seoul], 05505
Gangnam Severance Hospital, Yonsei University Health System
Seoul, Seoul-teukbyeolsi [seoul], 06273
Samsung Medical Center
Seoul, Seoul-teukbyeolsi [seoul], 06351
The Catholic Univ. of Korea Seoul St. Mary's Hospital
Seoul, Seoul-teukbyeolsi [seoul], 06591
Ewha Womans University Mokdong Hospital
Seoul, Seoul-teukbyeolsi [seoul]
Ajou University Hospital
Suwon, Kyǒnggi-do, 16499
Taiwan12 sites
Kaohsiung Medical University Chung-Ho Memorial Hospital
Kaohsiung City, 80756
Chang Gung Memorial Hospital at Kaohsiung
Kaohsiung Niao Sung Dist, Kaohsiung, 83301
China Medical University Hospital
Taichung, 40447
Chi Mei Medical Center
Tainan, Tainan, 71004
Chi Mei Hospital - Liouying Branch
Tainan, Tainan, 73657
National Cheng Kung University Hospital
Tainan, 704
National Taiwan University Hospital
Taipei, 10002
Mackay Memorial Hospital
Taipei, 10449
Taipei Veterans General Hospital
Taipei, 11217
Koo Foundation Sun Yat-Sen Cancer Center
Taipei, 112
Taipei Municipal Wan Fang Hospital
Taipei, 116
Chang Gung Medical Foundation-Linkou Branch
Taoyuan, 333
Turkey (Türkiye)12 sites
Adana Medical Park Seyhan Hastanesi
Adana, 01140
Adana Sehir Egitim ve Arastirma Hastanesi
Adana, 01370
Hacettepe Universite Hastaneleri
Altindağ, Ankara, 06230
Gulhane Egitim Arastirma Hastanesi
Ankara, 06010
Memorial Ankara Hastanesi
Ankara, 06520
Ankara Bilkent Şehir Hastanesi
Ankara, 06800
Akdeniz Universitesi Hastanesi
Antalya, 07059
Trakya University Medical Faculty Hospital
Edirne, 22030
TC Saglik Bakanligi Goztepe Prof. Dr. Suleyman Yalcin Sehir Hastanesi
Istanbul, İ̇stanbul, 34722
Acibadem Altunizade Hospital
Istanbul, İ̇stanbul, 34752
I.E.U. Medical Point Hastanesi
Izmir, İ̇zmir, 35575
Samsun Medical Park Hastanesi
Samsun, 55200
Italy11 sites
Azienda Ospedaliero Universitaria delle Marche
Ancona, The Marches, 60126
IRCCS Azienda Ospedaliero-Universitaria di Bologna, Policlinico di Sant'Orsola
Bologna, Emilia-Romagna, 40138
Azienda Ospedaliero Universitaria di Ferrara
Cona, Ferrara, 44124
Istituto Europeo di Oncologia IRCCS
Milan, 20141
Humanitas Istituto Clinico Catanese
Misterbianco, Catania, 95045
Fondazione IRCCS San Gerardo dei Tintori
Monza, Lombardy, 20900
Istituto Nazionale Tumori IRCCS Fondazione Pascale
Naples, Campania, 80131
Istituto Oncologico Veneto IRCCS
Padova, 35128
Azienda Ospedaliero Universitaria Pisana
Pisa, Tuscany, 56126
Ospedale Generale Provinciale Macerata
Province of Macerata, 62100
Fondazione Policlinico Universitario Agostino Gemelli IRCCS - Università Cattolica del Sacro Cuore
Rome, Lazio, 00168
Argentina10 sites
Centro de Oncología e Investigación de Buenos Aires
Berazategui, Buenos Aires, B1884BBF
Centro Oncologico Korben
Buenos Aires, 1426
Centro de Educación Médica e Investigaciones clínicas "Dr. Norberto Quirno" (CEMIC)
Buenos Aires, 1431
Fundación Respirar
Buenos Aires, C1426ABP
Instituto de Oncología Angel H. Roffo
CABA, Buenos Aires, 1417
Fundación Cenit Para La Investigación En Neurociencias
CABA, Buenos Aires F.D., 1125
Stat Research S.A.
Ciudad Autónoma de Buenos Aires, Buenos Aires, C1023AAB
Clínica Universitaria Reina Fabiola
Córdoba, X5004FHP
Fundacion Estudios Clinicos
Rosario, Santa Fe Province, 2000
Sanatorio de La Mujer
Rosario, Santa Fe Province, S2000ORE
Australia8 sites
Sunshine Coast University Private Hospital
Birtinya, Queensland, 4575
Cabrini Hospital -Brighton
Brighton, Victoria, 3186
Coffs Harbour Health Campus
Coffs Harbour, New South Wales, 2450
Barwon Health
Geelong, Victoria, 3220
Icon Cancer Centre Hobart
Hobart, Tasmania, 7000
ICON Cancer Centre - Kurralta Park
Kurralta Park, South Australia, 5037
Cabrini Hospital - Malvern
Malvern, Victoria, 3144
Princess Alexandra Hospital
Woolloongabba, Queensland, 4102
Canada8 sites
Cross Cancer Institute
Edmonton, Alberta, T6G 1Z2
Waterloo Regional Health Network
Kitchener, Ontario, N2G 1G3
The Moncton Hospital
Moncton, New Brunswick, E1C 6Z8
Centre de Services Ambulatoires de St-Jerome
Saint-Jérôme, Quebec, J7Y 0L1
Unité de Recherche Clinique du CISSS des Laurentides
Saint-Jérôme, Quebec, J7Z 2V4
BC Cancer Surrey
Surrey, British Columbia, V3V 1Z2
Sunnybrook Research Institute
Toronto, Ontario, M4N 3M5
Unity Health Toronto, St. Michael's Hospital
Toronto, Ontario, M5B 1W8
France8 sites
Institut de Cancérologie de l'Ouest
Angers, Maine-et-loire, 49055
Sainte Catherine Institut du Cancer Avignon Provence
Avignon, Vaucluse, 84918
Centre Jean Perrin - Centre Régional de Lutte contre le Cancer d'Auvergne
Clermont-Ferrand, Puy-de-dôme, 63011
Henri Mondor Hospital
Créteil, Île-de-France Region, 94000
Centre Georges François Leclerc
Dijon, Côte-d'or, 21079
Centre de Cancérologie du Grand Montpellier
Montpellier, Languedoc-roussillon, 34070
Centre Hospitalier Universitaire de Poitiers
Poitiers, Vienne, 86021
Institut de Cancérologie de l'Ouest
Saint-Herblain, Loire-atlantique, 44805
India8 sites
Artemis hospital
Gurgaon, Haryana, 122001
Institute of Post Graduate Medical Education and Research and Seth Sukhlal Karnani Memorial Hospital
Kolkata, West Bengal, 700020
Tata Memorial Hospital
Mumbai, Maharashtra, 400012
HCG Manavata Cancer Centre
Nashik, Maharashtra, 422002
Apex Wellness Hospital
Nashik, Maharashtra, 422009
Venkateshwar Hospital
New Delhi, National Capital Territory of Delhi, 110075
Rajiv Gandhi Cancer Institute And Research Centre
New Delhi, National Capital Territory of Delhi, 110085
Bhakti Vedanta Hospital and Research Institute
Thane, Maharashtra, 401107
Belgium5 sites
Antwerp University Hospital
Edegem, Antwerpen, 2650
Grand Hôpital de Charleroi
Gilly, Hainaut, 6060
UZ Leuven
Leuven, Vlaams-brabant, 3000
Clinical Chc Montlégia
Liège, 4000
Cliniques universitaires Saint-Luc
Woluwe-Saint-Lambert, Bruxelles-capitale, Région de, 1200
Greece5 sites
Alexandra General Hospital of Athens
Athens, Attikí, 115 28
Attikon General University Hospital
Chaidari/Athens, Attikí, 12462
University General Hospital of Heraklion
Heraklion, Irakleío, 715 00
University General Hospital of Larissa
Larissa, Thessalía, 41110
University Hospital of Patras
Pátrai, Achaḯa, 26504
Poland5 sites
COPERNICUS PL, Wojewodzkie Centrum Onkologii
Gdansk, Pomeranian Voivodeship, 80-219
Centrum Badań Klinicznych Jagiellońskie Centrum Innowacji sp. z o.o.
Krakow, Lesser Poland Voivodeship, 30-348
SP ZOZ Szpital Uniwersytecki w Krakowie
Krakow, Lesser Poland Voivodeship, 31-501
Centrum Terapii Wspolczesnej J. M. Jasnorzewska Spolka Komandytowo-Akcyjna
Lodz, Łódź Voivodeship, 90-338
Narodowy Instytut Onkologii im. Marii Sklodowskiej-Curie - Panstwowy Instytut Badawczy w Warszawie
Warsaw, Masovian Voivodeship, 02-781
Slovakia5 sites
Onkologicky ustav sv. Alzbety, s.r.o.
Bratislava, 812 50
Narodny onkologicky ustav
Bratislava, 833 10
Vychodoslovensky onkologicky ustav, a.s.
Košice, 04191
Nemocnica na okraji mesta n o
Partizánske, 95801
Fakultna nemocnica Trnava
Trnava, 917 75
Puerto Rico4 sites
Puerto Rico Medical Research Center
Hato Rey, Puerto RICO, 00917
Hospital Oncológico Dr. Isaac González-Martinez
Rio Piedras, 00935
Pan American Center for Oncology Trials, LLC
Rio Piedras, 00935
FDI Clinical Research
San Juan, 00927
South Africa4 sites
Iatros International
Bloemfontein, Free State, 9301
Charlotte Maxeke Johannesburg Academic Hospital
Johannesburg, Gauteng, 2193
WCR Office
Johannesburg, Gauteng, 2193
Wits Clinical Research
Johannesburg, Gauteng, 2193
United Kingdom4 sites
Royal Blackburn Hospital
Blackburn, BB2 3HH
The Beatson West of Scotland Cancer Centre
Glasgow, G12 0YN
St Bartholomew's Hospital
London, London, CITY of, EC1A 7BE
The Christie Hospital NHS Foundation Trust
Manchester, M20 4GJ
Czechia3 sites
Fakultní nemocnice Brno Bohunice
Brno, Brno-město, 625 00
Fakultni Thomayerova nemocnice
Prague, Praha 4, 14059
Fakultni nemocnice Kralovske Vinohrady
Prague, 10034
Finland3 sites
Satakunnan Keskussairaala
Pori, 28500
Tampereen yliopistollinen sairaala
Tampere, Pirkanmaa, 33520
Vaasan Keskussairaala
Vaasa, Pohjanmaa, 65130
Mexico3 sites
Cryptex Investigación Clínica S.A. de C.V.
Cuauhtémoc, Mexico City, 06100
Boca Clinical Trials Mexico S.C.
Guadajalara, Jalisco, 44600
Centro de Investigacion Clinica de Oaxaca
Oaxaca City, 68020
Switzerland3 sites
Tumor Zentrum Aarau
Aarau, Canton of Aargau, 5000
Kantonsspital Frauenfeld - Spital Thurgau AG
Frauenfeld, Thurgau, 8500
Kantonsspital Münsterlingen - Spital Thurgau AG
Münsterlingen, Thurgau, CH8596
Austria2 sites
Medizinische Universität Graz
Graz, Styria, 8036
Uniklinikum Salzburg
Salzburg, 5020
Bulgaria2 sites
Complex Oncology Center - Burgas
Burgas, 8000
Complex Oncology Center - Plovdiv EOOD
Plovdiv, 4004
Hungary2 sites
Budapesti Uzsoki Utcai Kórház
Budapest, 1145
Petz Aladar Egyetemi Oktato Korhaz
Győr, Győr-Moson-Sopron, 9024
Israel2 sites
Rabin Medical Center
Petah Tikva, Central District, 4941492
Kaplan Medical Center
Rehovot, Central District, 7610001
About this study
Official title: A PHASE 3, RANDOMIZED, OPEN-LABEL, MULTICENTER TRIAL OF ARV-471 (PF-07850327) VS FULVESTRANT IN PARTICIPANTS WITH ESTROGEN RECEPTOR-POSITIVE, HER2-NEGATIVE ADVANCED BREAST CANCER WHOSE DISEASE PROGRESSED AFTER PRIOR ENDOCRINE BASED TREATMENT FOR ADVANCED DISEASE (VERITAC-2)
A study to learn about a new medicine called ARV-471 (PF-07850327) in people who have advanced metastatic breast cancer.
Read the detailed description
The purpose of this study is to learn about the safety and effects of the study medicine ARV-471 (PF-07850327, vepdegestrant) compared to fulvestrant (FUL) in participants with advanced breast cancer. Advanced breast cancer is difficult to cure or control with treatment. The cancer may have spread from where it first started to nearby tissue, lymph nodes, or distant parts of the body, i.e. bones, lungs, brain, or liver. FUL is a medicine already used for treatment of breast cancer while ARV-471 is a new medicine.
This study is seeking participants with breast cancer who:
- have cancer that has come back in the place where it started or spread to nearby tissue, lymph nodes, or distant parts of the body.
- cannot be fully cured by surgery or radiation therapy. Radiation therapy is the use of high-energy radiation such as x-rays, gamma rays and other sources to kill cancer cells and shrink tumors.
- respond to hormonal or endocrine therapy (which target hormones and/or activity of hormone receptors) such as tamoxifen or aromatase inhibitors (this is called estrogen receptor positive disease)
- have received one line of CDK4/6 inhibitor therapy (for example palbociclib, ribociclib or abemaciclib) in combination with endocrine therapy (for example letrozole) for advanced cancer.
- are allowed up to one other endocrine therapy (for example exemestane) for advanced cancer.
Half of the participants will be given ARV-471 while the other half of the participants will be given FUL.
Participants who get ARV-471 will take ARV-471 by mouth with food, one time a day. During the first treatment cycle participants who will get FUL will be given FUL by shots into the muscles on Day 1 and again 2 weeks later. After the first month, FUL shots will be given on the first day of each new treatment cycle. One treatment cycle is 28 days.
Participants will receive the study medicine until their breast cancer worsens or side effects become too severe. Participants will have visits at the study clinic about every 4 weeks.
- Conditions
- Advanced Breast Cancer
- Being tested
- ARV-471, Fulvestrant
- Keywords
- ER(+)/HER2(-) Advanced Breast Cancer, Advanced cancer of the breast, Breast neoplasm, Breast tumor, Breast cancer, Fulvestrant, Estrogen receptor positive, Metastatic breast cancer, ER degrader, PROTAC, Hormone Therapy, Hormone positive breast cancer, Endocrine therapy, Recurrent breast cancer, HR+, HER2-negative, Vepdegestrant
- Medical subject headings
- Breast Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
ARV-471Drug
Also called PF-07850327
orally, once daily on a 28-day continuous dosing schedule
FulvestrantDrug
intramuscularly on Days 1 and 15 of Cycle 1 and then on Day 1 of each cycle starting from C2D1 (28-day cycle)
| Study group | Role | What they receive |
|---|---|---|
| ARV-471 | Experimental | Not described Receives: Drug: ARV-471 |
| Fulvestrant | Active comparator | Not described Receives: Drug: Fulvestrant |
What is being measured
The primary outcome is the main question the study is designed to answer.
Progression Free Survival (PFS) by Blinded Independent Central Review (BICR) Assessment Per Response Evaluation Criteria in Solid Tumors (RECIST) Version (v) 1.1- All Randomized Participants
PFS assessed by BICR was defined as the time from the date of randomization to the date of the first documentation of objective progression of disease (PD) per RECIST v1.1, or death due to any cause, whichever occurred first. PD as per RECIST v1.1 was defined as at least a 20% increase in the sum of diameters of target measurable lesions above nadir (smallest sum observed considering baseline and all assessments prior to the timepoint under evaluation), with a minimum absolute increase of 5 millimeters (mm) relative to nadir or unequivocal progression of existing non-target lesions or the presence of new lesions. PFS was censored on the date of last adequate disease assessment for those who did not have a PFS event, discontinued the study treatment due to withdrawal of consent prior to an event, started a new anticancer therapy prior to an event, had an event after a gap of 2 or more missing disease assessments, or lost to follow-up. Kaplan-Meier method was used.
Measured: From date of randomization to date of first documentation of objective PD or death (any cause) or censoring date, whichever occurred first (up to 18.56 months and 19.38 months of treatment exposure for vepdegestrant and fulvestrant arms respectively)
PFS by BICR Assessment Per RECIST v1.1-Participants With ESR1 Mutation
PFS assessed by BICR was defined as the time from the date of randomization to the date of the first documentation of objective PD per RECIST v1.1, or death due to any cause, whichever occurred first. PD as per RECIST v1.1 was defined as at least a 20% increase in the sum of diameters of target measurable lesions above nadir (smallest sum observed considering baseline and all assessments prior to the timepoint under evaluation), with a minimum absolute increase of 5 mm relative to nadir or unequivocal progression of existing non-target lesions or the presence of new lesions. PFS was censored on the date of last adequate disease assessment for those who did not have a PFS event, discontinued the study treatment due to withdrawal of consent prior to an event, started a new anticancer therapy prior to an event, had an event after a gap of 2 or more missing disease assessments, or lost to follow-up. Kaplan-Meier method was used.
Measured: From date of randomization to date of first documentation of objective PD or death (any cause) or censoring date, whichever occurred first (up to 18.56 months and 19.38 months of treatment exposure for vepdegestrant and fulvestrant arms respectively)
Secondary outcomes (16)
Overall Survival (OS)-All Randomized Participants
OS was defined as the time from date of randomization to date of death due to any cause. In case of no death, OS time would be censored on the date participant was last known to be alive.
Measured: From date of randomization to the date of death due to any cause or censoring date
OS-Participants With ESR1 Mutation
OS was defined as the time from date of randomization to date of death due to any cause. In case of no death, OS time would be censored on the date participant was last known to be alive.
Measured: From date of randomization to the date of death due to any cause or censoring date
Percentage of Participants With Objective Response (OR) by BICR Assessment- Participants With Measurable Disease at Baseline
OR was defined as the best overall response of confirmed complete response (CR) or partial response (PR) by BICR assessment as per RECIST v1.1 criteria. As per RECIST v1.1, CR was defined as complete disappearance of all target lesions, with the exception of nodal disease, complete disappearance of all non-target lesions and no new lesions. All nodes decreased to normal (short axis <10 mm); all target lesions and disease sites were assessed. PR was defined as at least a 30% decrease from baseline in the sum of diameters of all target lesions, non-PD/not evaluated for the non-target lesions and no new lesions. The short diameter was used in the sum for nodal target lesions, while the longest diameter was used in the sum for non-nodal target lesions, all target lesions were assessed.
Measured: From randomization until PD, death or start of new anticancer therapy, whichever occurred first (up to 18.56 months and 19.38 months of treatment exposure for vepdegestrant and fulvestrant arms respectively)
Clinical Benefit Rate (CBR) by BICR Assessment
CBR: percentage of participants with clinical benefit response. Clinical benefit response: confirmed CR or PR at any time, or stable disease (SD) >=24 weeks per RECIST v1.1. CR: complete disappearance of all target lesions, of all non-target lesions and no new lesions; except for nodal disease, all nodes decreased to normal (short axis <10 mm); all disease sites, all target lesions assessed. PR: >=30% decrease from baseline in sum of diameters of all target lesions, non-PD/not evaluated for non-target lesions and no new lesions; all target lesions assessed. SD: did not qualify for CR, PR, PD. All target lesions assessed. PD per RECIST v1.1: at least 20% increased sum of diameters of target measurable lesions above nadir (smallest sum observed considering baseline and all assessments prior to timepoint under evaluation), with minimum absolute increase of 5mm relative to nadir or unequivocal progression of existing non-target lesions, or new lesions.
Measured: From randomization until PD, death due to any cause or start of new anticancer therapy, whichever occurred first (up to 18.56 months and 19.38 months of treatment exposure for vepdegestrant and fulvestrant arms respectively)
Duration of Response (DOR) by BICR Assessment
DOR was defined as time from first documentation of objective tumor response (CR or PR) to first documentation of PD, or death due to any cause, whichever occurred first. CR: complete disappearance of all target lesions, of all non-target lesions and no new lesions; except for nodal disease, all nodes decreased to normal (short axis <10 mm); all disease sites, all target lesions assessed. PR: >=30% decrease from baseline in sum of diameters of all target lesions, non-PD/not evaluated for non-target lesions and no new lesions; all target lesions were assessed. The short diameter is used in the sum for nodal target lesions, while longest diameter is used in sum for non-nodal target lesions, all target lesions were assessed. DOR was analyzed in participants with an OR. PD: at least 20% increase in sum of diameters of target measurable lesions above nadir, with minimum absolute increase of 5 mm relative to nadir or unequivocal progression of existing non-target lesions, or new lesions.
Measured: From first documentation of objective tumor response until confirmed PD or death, whichever occurred first (up to 18.56 months and 19.38 months of treatment exposure for vepdegestrant and fulvestrant arms respectively)
Number of Participants With Treatment Emergent Adverse Events (TEAEs), Treatment Emergent Serious Adverse Events (TESAEs), Treatment Related TEAEs, Grade 3 or 4 and Grade 5 TEAEs as Assessed by NCI CTCAE v5.0
Adverse event (AE): any untoward medical occurrence in clinical study participant, temporally associated with use of study treatment, whether or not considered related to study treatment. AEs included both SAEs and all other (non-SAEs) AEs. SAE: any untoward medical occurrence, at any dose met one or more of following criteria: death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability/incapacity, congenital anomaly/birth defect or other important medical events. TEAEs: AEs that occur on or after first dose of study treatment up to 28 days after last dose of study treatment. Relatedness to study drug were judged by investigator. As per National Cancer Institute Common Terminology Criteria for AE (NCI CTCAE) severity of AEs were graded as following, Grade 1: mild, Grade 2: moderate, Grade 3: severe, Grade 4: life-threatening; urgent treatment indicated, Grade 5: death related to AE.
Measured: From the first dose of study treatment up to 28 days after last dose of study treatment
Number of Participants With Grade Shift From Baseline to Maximum Post-Baseline in Hematology Parameters Assessed by NCI CTCAE v5.0
Hematological parameters including neutrophil count decreased, white blood cell decreased, anemia, platelet count decreased, hemoglobin increased and leukocytosis were assessed. Baseline was defined as the last assessment on or prior to the date of the first dose of study treatment. As per NCI CTCAE v5.0, severity was graded as, Grade 1: mild, Grade 2: moderate, Grade 3: severe and Grade 4: life-threatening; urgent treatment indicated. Grade 0: Non-missing laboratory value that fell outside the grading range for the corresponding laboratory parameter. Categories with at least 1 non-zero values showing any shift in Grade from baseline to post-baseline were reported.
Measured: From baseline up to 28 days after last dose of study treatment (up to 19.56 months and 20.38 months for vepdegestrant and fulvestrant arms respectively)
Number of Participants With Grade Shift From Baseline to Maximum Post-Baseline in Serum Chemistry Laboratory Abnormalities Assessed by NCI CTCAE v5.0
Serum chemistry parameters including alanine aminotransferase increased, alkaline phosphatase increased, aspartate aminotransferase increased, blood bilirubin increased, cholesterol high, creatinine increased, hypercalcemia, hyperkalemia, hypermagnesemia, hypernatremia, hypertriglyceridemia, hypoalbuminemia, hypocalcemia, hypoglycemia, hypokalemia, hypomagnesemia, hyponatremia were assessed. Baseline was defined as the last assessment on or prior to the date of the first dose of study treatment. As per NCI CTCAE v5.0 severity was graded as, Grade 1: mild, Grade 2: moderate, Grade 3: severe and Grade 4: life-threatening; urgent treatment indicated. Grade 0: Non-missing laboratory value that falls outside the grading range for the corresponding laboratory parameter. Categories with at least 1 non-zero values showing any shift in Grade from baseline to post-baseline were reported.
Measured: From baseline up to 28 days after last dose of study treatment (up to 19.56 months and 20.38 months for vepdegestrant and fulvestrant arms respectively)
Number of Participants According to Categorization of Electrocardiogram (ECG) Parameters
Twelve lead ECGs were collected using an automated ECG machine that calculated heart rate and measured corrected QT (QTc interval, QT interval, PR interval and QRS complex). Criteria for heart rate was as follows, <= 50 beats/minute (min), >=100 beats/min, increase from baseline >= 20 beats/min, decrease from baseline >= 20 beats/min. Criteria for PR interval was >= 220 millisecond (msec). Criteria for QRS interval was >= 120 msec. Criteria for QT interval was as follows, <=450 msec, > 450 to <= 480 msec, >480 to <=500 msec, >500 msec, increase from baseline <= 30 msec, increase from baseline > 30 to <= 60 msec. Criteria for QTCF interval was as follows, <=450 msec, > 450 to <= 480 msec, > 480 to <= 500 msec, > 500 msec, increase from baseline <= 30 msec, increase from baseline > 30 to <= 60 msec, increase from baseline > 60 msec. Baseline was defined as the last assessment on or prior to the date of the first dose of study treatment.
Measured: From baseline up to 28 days after last dose of study treatment (up to 19.56 months and 20.38 months for vepdegestrant and fulvestrant arms respectively)
Number of Participants According to Categorization of QT Interval Corrected Using Fridericia's Formula (QTcF) Results-QTc Substudy Analysis Set
Criteria for QTcF interval for single beat were as follows, <= 450 msec, > 450 to <= 480 msec, > 480 to <=500 msec, > 500 msec, increase from baseline <= 30 msec, increase from baseline > 30 to <= 60 msec, increase from baseline > 60 msec. Baseline was defined as the last assessment on or prior to the date of the first dose of study treatment.
Measured: Baseline and from the first dose of study treatment up to the end of treatment (EOT) i.e., 28 days after last dose of study treatment (approximately up to 19.56 months)
Change From Baseline in European Organization for the Research and Treatment of Cancer and Quality of Life Questionnaire (EORTC QLQ-C30) Score
The EORTC QLQ-C30 contains 30 items and is composed of 5 multi-item functional scales (physical functioning, role functioning, emotional functioning, cognitive functioning and social functioning), 3 multi-item symptom scales (fatigue, pain and nausea/vomiting), 6 single item symptom scales (dyspnea, insomnia, appetite loss, constipation, diarrhea, and financial impact), and one global quality of life scale. This questionnaire contained 30 questions organized into 5 multi-item functional scales, 3 multi-item symptom scales, 6 single item symptom scales, and one global quality of life scale. All the scales and single-item measures range in score from 0 to 100. Higher scores on the functional scales represent higher levels of functioning. Higher scores on the global health status/quality of life scale represent higher health status/quality of life. Higher scores on symptom scales/items represent a greater presence of symptoms.
Measured: From baseline up to 28 days after last dose of study treatment
Change From Baseline in European Organization for the Research and Treatment of Cancer and Quality of Life Questionnaire-Breast Cancer Specific (EORTC QLQ-BR23) Score
The EORTC QLQ-BR23 was a 23-item breast cancer-specific companion module to the EORTC-QLQ-C30 and consisted of four functional scales (body image, sexual functioning, sexual enjoyment, future perspective) and four symptom scales (systemic side-effects, breast symptoms, arm symptoms, upset by hair loss). Each item was rated by choosing 1 of 4 possible responses that record the level of intensity (1= not at all, 2= a little, 3= quite a bit, and 4= very much) within each scale. All scores are converted to a 0 to 100 scale. For functional scales, higher scores represent a better level of functioning. For symptom-oriented scales, higher scores represented greater symptom severity.
Measured: From baseline up to 28 days after last dose of study treatment
Change From Baseline in EuroQol 5 Dimensions 5 Level (EQ-5D-5L) Index and Visual Analogue Scale (VAS) Scores
The EQ-5D-5L was a 5-item participant-completed questionnaire designed to assess health status in terms of a single index value or utility score. There were 2 components, a Health State Profile where participants rated their level of problems (1=none, 2=slight, 3=moderate, 4=severe, 5=extreme/unable) in 5 dimensions (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression), and a visual analogue scale (VAS) in which participants rated their overall health status from 0 (worst imaginable) to 100 (best imaginable). Responses to 5 dimensions comprised health state/ single utility index value. E.g. if a participant responds "no problems" for each 5 dimensions, then health state was coded as "11111" with a predefined index value to it. Every health state (coded as combination of responses) had a unique predefined utility index value assigned to it per US value sets, Overall index scores ranged from 0 to 1, with lower scores representing a higher level of dysfunction.
Measured: From baseline up to 28 days after last dose of study treatment
Change From Baseline in Pain Severity and Pain Interference as Assessed by Brief Pain Inventory Short Form (BPI-SF) Score
The BPI-SF consisted of items to measure participant perceptions of pain severity (item 3), assess degree of interference of pain on daily functioning, body diagrams on which participants indicate location of pain, record pain medication usage, VAS assessed degree of pain relief in last 24 hours (item 9a). Items in pain severity scale evaluated pain "at its worst", "at its least", and "on average" over previous 24 hours, as well as "pain now" (at time of assessment). Participants responded on 10- point numerical rating scale, where 0 = "no pain" and 10 = "pain as bad as you can imagine". Pain interference scale asked participants to rate how their pain interferes with "enjoyment of life", "general activity", "walking ability", "mood", "sleep", "normal work" and "relations with other people." Responses for interference scale were also based on 10-points scale, where 0 = "does not interfere" and 10 = "interferes completely". Higher scores=high levels of pain, impact attributed to pain.
Measured: From baseline up to 28 days after last dose of study treatment
Plasma Concentration of ARV-471 and Its Epimer ARV-473
Plasma concentrations of ARV-471 and its epimer ARV-473 were reported in this outcome measure.
Measured: Anytime between -4 to 0 hours on Day 1 of Cycle 2, Cycle 3, Cycle 5 and Cycle 7 and anytime between 5 to 7 hours on Day 1 of Cycle 2 and Cycle 3
Change in Plasma Circulating Tumor DNA (ctDNA) From Baseline
Quantitative change in plasma ctDNA levels from baseline to each protocol specified time point (up to EOT), as assessed using a validated assay.
Measured: Baseline and up to EOT
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Dec 2022
- Study start3 Mar 2023
- Primary completion31 Jan 2025
- Study completion15 May 2028 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Advanced Breast CancerStudies of the same condition, open and under way.
- More trials run by PfizerThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 624 participants (actual)
Sponsor and investigators
- Lead sponsor
- Pfizer
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- Arvinas Estrogen Receptor, Inc.
- Responsible party
- Sponsor
- Investigators
- Pfizer CT.gov Call Center, Study director, Pfizer
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05654623
- Sponsor's protocol ID
- C4891001
- Other IDs
- 2022-500544-38-00
- Acronym
- VERITAC-2
- Status last verified
- Feb 2026
- First submitted
- 16 Nov 2022
- Last updated
- 18 Mar 2026
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Yes: Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical\_trials/trial\_data\_and\_results/data\_requests.
Publications
Campone M, De Laurentiis M, Jhaveri K, Hu X, Ladoire S, Patsouris A, Zamagni C, Cui J, Cazzaniga M, Cil T, Jerzak KJ, Fuentes C, Yoshinami T, Rodriguez-Lescure A, Sezer A, Fontana A, Guarneri V, Molckovsky A, Mouret-Reynier MA, Demirci U, Zhang Y, Valota O, Lu DR, Martignoni M, Parameswaran J, Zhi X, Hamilton EP; VERITAC-2 Study Group. Vepdegestrant, a PROTAC Estrogen Receptor Degrader, in Advanced Breast Cancer. N Engl J Med. 2025 Aug 7;393(6):556-568. doi: 10.1056/NEJMoa2505725. Epub 2025 May 31.
PubMed 40454645Hamilton EP, Ma C, De Laurentiis M, Iwata H, Hurvitz SA, Wander SA, Danso M, Lu DR, Perkins Smith J, Liu Y, Tran L, Anderson S, Campone M. VERITAC-2: a Phase III study of vepdegestrant, a PROTAC ER degrader, versus fulvestrant in ER+/HER2- advanced breast cancer. Future Oncol. 2024;20(32):2447-2455. doi: 10.1080/14796694.2024.2377530. Epub 2024 Jul 29.
PubMed 39072356
Study at a glance
From the registry record, last updated by the sponsor on 18 Mar 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A PHASE 3, RANDOMIZED, OPEN-LABEL, MULTICENTER TRIAL OF ARV-471 (PF-07850327) VS FULVESTRANT IN PARTICIPANTS WITH ESTROGEN RECEPTOR-POSITIVE, HER2-NEGATIVE ADVANCED BREAST CANCER WHOSE DISEASE PROGRESSED AFTER PRIOR ENDOCRINE BASED TREATMENT FOR ADVANCED DISEASE (VERITAC-2)
- ClinicalTrials.gov ID
- NCT05654623
- Acronym / sponsor ID
- VERITAC-2 / C4891001
- Conditions
- Advanced Breast Cancer
- Keywords
- ER(+)/HER2(-) Advanced Breast Cancer, Advanced cancer of the breast, Breast neoplasm, Breast tumor, Breast cancer, Fulvestrant, Estrogen receptor positive, Metastatic breast cancer
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Active, not recruiting
- Enrolment
- 624 participants (actual)
- Lead sponsor
- PfizerIndustry (pharma, biotech, devices)
- Collaborators
- Arvinas Estrogen Receptor, Inc.
- Study start
- 3 Mar 2023 (actual)
- Primary completion
- 31 Jan 2025 (actual)
- Study completion
- 15 May 2028 (estimated)
- First posted
- 16 Dec 2022 (actual)
- Results
- Posted 3 Feb 2026
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
A study to learn about a new medicine called ARV-471 (PF-07850327) in people who have advanced metastatic breast cancer.
Detailed description
The purpose of this study is to learn about the safety and effects of the study medicine ARV-471 (PF-07850327, vepdegestrant) compared to fulvestrant (FUL) in participants with advanced breast cancer. Advanced breast cancer is difficult to cure or control with treatment. The cancer may have spread from where it first started to nearby tissue, lymph nodes, or distant parts of the body, i.e. bones, lungs, brain, or liver. FUL is a medicine already used for treatment of breast cancer while ARV-471 is a new medicine.
This study is seeking participants with breast cancer who:
- have cancer that has come back in the place where it started or spread to nearby tissue, lymph nodes, or distant parts of the body.
- cannot be fully cured by surgery or radiation therapy. Radiation therapy is the use of high-energy radiation such as x-rays, gamma rays and other sources to kill cancer cells and shrink tumors.
- respond to hormonal or endocrine therapy (which target hormones and/or activity of hormone receptors) such as tamoxifen or aromatase inhibitors (this is called estrogen receptor positive disease)
- have received one line of CDK4/6 inhibitor therapy (for example palbociclib, ribociclib or abemaciclib) in combination with endocrine therapy (for example letrozole) for advanced cancer.
- are allowed up to one other endocrine therapy (for example exemestane) for advanced cancer.
Half of the participants will be given ARV-471 while the other half of the participants will be given FUL.
Participants who get ARV-471 will take ARV-471 by mouth with food, one time a day. During the first treatment cycle participants who will get FUL will be given FUL by shots into the muscles on Day 1 and again 2 weeks later. After the first month, FUL shots will be given on the first day of each new treatment cycle. One treatment cycle is 28 days.
Participants will receive the study medicine until their breast cancer worsens or side effects become too severe. Participants will have visits at the study clinic about every 4 weeks.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| ARV-471 | Experimental | Drug: ARV-471 |
| Fulvestrant | Active comparator | Drug: Fulvestrant |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (10 listed)
- Adult participants with loco-regional recurrent or metastatic breast disease not amenable to surgical resection or radiation therapy
- Confirmed diagnosis of ER+/HER2- breast cancer
- Prior therapies for locoregional recurrent or metastatic disease must fulfill all the following criteria:
- One line of CDK4/6 inhibitor therapy in combination with endocrine therapy. Only one line of CDK4/6 inhibitor is allowed in any setting.
- ≤ 1 endocrine therapy in addition to CDK4/6 inhibitor with ET
Key exclusion criteria (8 listed)
- Participants with advanced, symptomatic visceral spread, that are at risk of life-threatening complications in the short term
- Prior treatment with:
- ARV-471, fulvestrant, elacestrant, mTOR, PI3K, AKT pathway inhibitors, PARP inhibitor for any setting
- other investigational agents (including novel endocrine therapy any SERDs, SERCAs, CERANs) for any setting
- prior chemotherapy for advanced/metastatic disease
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| ARV-471Also: PF-07850327orally, once daily on a 28-day continuous dosing schedule | Drug | ARV-471 |
| Fulvestrantintramuscularly on Days 1 and 15 of Cycle 1 and then on Day 1 of each cycle starting from C2D1 (28-day cycle) | Drug | Fulvestrant |
Primary outcome
Progression Free Survival (PFS) by Blinded Independent Central Review (BICR) Assessment Per Response Evaluation Criteria in Solid Tumors (RECIST) Version (v) 1.1- All Randomized Participants
Time frame: From date of randomization to date of first documentation of objective PD or death (any cause) or censoring date, whichever occurred first (up to 18.56 months and 19.38 months of treatment exposure for vepdegestrant and fulvestrant arms respectively)
PFS assessed by BICR was defined as the time from the date of randomization to the date of the first documentation of objective progression of disease (PD) per RECIST v1.1, or death due to any cause, whichever occurred first. PD as per RECIST v1.1 was defined as at least a 20% increase in the sum of diameters of target measurable lesions above nadir (smallest sum observed considering baseline and all assessments prior to the timepoint under evaluation), with a minimum absolute increase of 5 millimeters (mm) relative to nadir or unequivocal progression of existing non-target lesions or the presence of new lesions. PFS was censored on the date of last adequate disease assessment for those who did not have a PFS event, discontinued the study treatment due to withdrawal of consent prior to an event, started a new anticancer therapy prior to an event, had an event after a gap of 2 or more missing disease assessments, or lost to follow-up. Kaplan-Meier method was used.
PFS by BICR Assessment Per RECIST v1.1-Participants With ESR1 Mutation
Time frame: From date of randomization to date of first documentation of objective PD or death (any cause) or censoring date, whichever occurred first (up to 18.56 months and 19.38 months of treatment exposure for vepdegestrant and fulvestrant arms respectively)
PFS assessed by BICR was defined as the time from the date of randomization to the date of the first documentation of objective PD per RECIST v1.1, or death due to any cause, whichever occurred first. PD as per RECIST v1.1 was defined as at least a 20% increase in the sum of diameters of target measurable lesions above nadir (smallest sum observed considering baseline and all assessments prior to the timepoint under evaluation), with a minimum absolute increase of 5 mm relative to nadir or unequivocal progression of existing non-target lesions or the presence of new lesions. PFS was censored on the date of last adequate disease assessment for those who did not have a PFS event, discontinued the study treatment due to withdrawal of consent prior to an event, started a new anticancer therapy prior to an event, had an event after a gap of 2 or more missing disease assessments, or lost to follow-up. Kaplan-Meier method was used.
16 secondary outcomes
Overall Survival (OS)-All Randomized Participants
Time frame: From date of randomization to the date of death due to any cause or censoring date
OS-Participants With ESR1 Mutation
Time frame: From date of randomization to the date of death due to any cause or censoring date
Percentage of Participants With Objective Response (OR) by BICR Assessment- Participants With Measurable Disease at Baseline
Time frame: From randomization until PD, death or start of new anticancer therapy, whichever occurred first (up to 18.56 months and 19.38 months of treatment exposure for vepdegestrant and fulvestrant arms respectively)
Clinical Benefit Rate (CBR) by BICR Assessment
Time frame: From randomization until PD, death due to any cause or start of new anticancer therapy, whichever occurred first (up to 18.56 months and 19.38 months of treatment exposure for vepdegestrant and fulvestrant arms respectively)
Duration of Response (DOR) by BICR Assessment
Time frame: From first documentation of objective tumor response until confirmed PD or death, whichever occurred first (up to 18.56 months and 19.38 months of treatment exposure for vepdegestrant and fulvestrant arms respectively)
Number of Participants With Treatment Emergent Adverse Events (TEAEs), Treatment Emergent Serious Adverse Events (TESAEs), Treatment Related TEAEs, Grade 3 or 4 and Grade 5 TEAEs as Assessed by NCI CTCAE v5.0
Time frame: From the first dose of study treatment up to 28 days after last dose of study treatment
Number of Participants With Grade Shift From Baseline to Maximum Post-Baseline in Hematology Parameters Assessed by NCI CTCAE v5.0
Time frame: From baseline up to 28 days after last dose of study treatment (up to 19.56 months and 20.38 months for vepdegestrant and fulvestrant arms respectively)
Number of Participants With Grade Shift From Baseline to Maximum Post-Baseline in Serum Chemistry Laboratory Abnormalities Assessed by NCI CTCAE v5.0
Time frame: From baseline up to 28 days after last dose of study treatment (up to 19.56 months and 20.38 months for vepdegestrant and fulvestrant arms respectively)
Number of Participants According to Categorization of Electrocardiogram (ECG) Parameters
Time frame: From baseline up to 28 days after last dose of study treatment (up to 19.56 months and 20.38 months for vepdegestrant and fulvestrant arms respectively)
Number of Participants According to Categorization of QT Interval Corrected Using Fridericia's Formula (QTcF) Results-QTc Substudy Analysis Set
Time frame: Baseline and from the first dose of study treatment up to the end of treatment (EOT) i.e., 28 days after last dose of study treatment (approximately up to 19.56 months)
Change From Baseline in European Organization for the Research and Treatment of Cancer and Quality of Life Questionnaire (EORTC QLQ-C30) Score
Time frame: From baseline up to 28 days after last dose of study treatment
Change From Baseline in European Organization for the Research and Treatment of Cancer and Quality of Life Questionnaire-Breast Cancer Specific (EORTC QLQ-BR23) Score
Time frame: From baseline up to 28 days after last dose of study treatment
Change From Baseline in EuroQol 5 Dimensions 5 Level (EQ-5D-5L) Index and Visual Analogue Scale (VAS) Scores
Time frame: From baseline up to 28 days after last dose of study treatment
Change From Baseline in Pain Severity and Pain Interference as Assessed by Brief Pain Inventory Short Form (BPI-SF) Score
Time frame: From baseline up to 28 days after last dose of study treatment
Plasma Concentration of ARV-471 and Its Epimer ARV-473
Time frame: Anytime between -4 to 0 hours on Day 1 of Cycle 2, Cycle 3, Cycle 5 and Cycle 7 and anytime between 5 to 7 hours on Day 1 of Cycle 2 and Cycle 3
Change in Plasma Circulating Tumor DNA (ctDNA) From Baseline
Time frame: Baseline and up to EOT
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 Mar 2026.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 40454645Campone M, De Laurentiis M, Jhaveri K, Hu X, Ladoire S, Patsouris A, Zamagni C, Cui J, Cazzaniga M, Cil T, Jerzak KJ, Fuentes C, Yoshinami T, Rodriguez-Lescure A, Sezer A, Fontana A, Guarneri V, Molckovsky A, Mouret-Reynier MA, Demirci U, Zhang Y, Valota O, Lu DR, Martignoni M, Parameswaran J, Zhi X, Hamilton EP; VERITAC-2 Study Group. Vepdegestrant, a PROTAC Estrogen Receptor Degrader, in Advanced Breast Cancer. N Engl J Med. 2025 Aug 7;393(6):556-568. doi: 10.1056/NEJMoa2505725. Epub 2025 May 31.
- Derived from this study: PubMed 39072356Hamilton EP, Ma C, De Laurentiis M, Iwata H, Hurvitz SA, Wander SA, Danso M, Lu DR, Perkins Smith J, Liu Y, Tran L, Anderson S, Campone M. VERITAC-2: a Phase III study of vepdegestrant, a PROTAC ER degrader, versus fulvestrant in ER+/HER2- advanced breast cancer. Future Oncol. 2024;20(32):2447-2455. doi: 10.1080/14796694.2024.2377530. Epub 2024 Jul 29.
- To obtain contact information for a study center near you, click here.Link provided by the sponsor.
- Individual participant dataSharing planned: Yes. Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Pfizer CT.gov Call Center study director
Pfizer
312 sites in 31 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing ARV-471 and Fulvestrant in people with Advanced Breast Cancer, run by Pfizer at 312 sites in 31 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 10 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: under way, not looking for participants, as of the sponsor's last update on 18 Mar 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 312 sites in United States, China, Spain, Japan, Brazil and 26 more countries. 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 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
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 3 Feb 2026). 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?
Progression Free Survival (PFS) by Blinded Independent Central Review (BICR) Assessment Per Response Evaluation Criteria in Solid Tumors (RECIST) Version (v) 1.1- All Randomized Participants (time frame: From date of randomization to date of first documentation of objective PD or death (any cause) or censoring date, whichever occurred first (up to 18.56 months and 19.38 months of treatment exposure for vepdegestrant and fulvestrant arms respectively)). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT05654623, which also lists 2 linked publications.
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 18 Mar 2026; AzTrials last refreshed its copy on 1 Nov 2026.