Major breast cancer drug trial halted early

NCT ID NCT04478266

Summary

This study aimed to see if a new drug combination (amcenestrant plus palbociclib) could better control advanced breast cancer compared to the standard treatment (letrozole plus palbociclib). It involved over 1,000 adults with a specific type of breast cancer (ER+/HER2-) that had spread or returned and had not yet been treated for advanced disease. The trial was designed to measure which combination kept the cancer from worsening longer, but the study was terminated early.

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes NO responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for BREAST CANCER are added.

Our safety recommendation!

By submitting, you agree to our Terms of use

Contacts and locations

Locations

  • Investigational Site Number :0320001

    CABA, Buenos Aires, C1012AAR, Argentina

  • Investigational Site Number :0320002

    Rosario, Santa Fe Province, 2000, Argentina

  • Investigational Site Number :0320003

    La Rioja, 5300, Argentina

  • Investigational Site Number :0320004

    Buenos Aires, C1125ABD, Argentina

  • Investigational Site Number :0320005

    CABA, Buenos Aires, C1019ABS, Argentina

  • Investigational Site Number :0320006

    Pergamino, Buenos Aires, B2700CPM, Argentina

  • Investigational Site Number :0320007

    Salta, 4400, Argentina

  • Investigational Site Number :0320008

    Capital Federal, Buenos Aires, C1417DTB, Argentina

  • Investigational Site Number :0320009

    Mar del Plata, B7600FYK, Argentina

  • Investigational Site Number :0320010

    Córdoba, Córdoba Province, 5000, Argentina

  • Investigational Site Number :0360001

    Nedlands, Western Australia, 6009, Australia

  • Investigational Site Number :0360002

    Richmond, Victoria, 3121, Australia

  • Investigational Site Number :0360003

    Wahroonga, New South Wales, 2076, Australia

  • Investigational Site Number :0360004

    Macquarie Park, New South Wales, 2109, Australia

  • Investigational Site Number :0360005

    Randwick, New South Wales, 2031, Australia

  • Investigational Site Number :0400001

    Graz, 8036, Austria

  • Investigational Site Number :0560001

    Leuven, 3000, Belgium

  • Investigational Site Number :0560002

    Namur, 5000, Belgium

  • Investigational Site Number :0560003

    Brussels, BE-1200, Belgium

  • Investigational Site Number :0560004

    Charleroi, B-6000, Belgium

  • Investigational Site Number :0760003

    São Paulo, São Paulo, 04014-002, Brazil

  • Investigational Site Number :0760004

    Rio de Janeiro, 20230-130, Brazil

  • Investigational Site Number :0760005

    Porto Alegre, Rio Grande do Sul, 90035 003, Brazil

  • Investigational Site Number :0760006

    Porto Alegre, Rio Grande do Sul, 91350-250, Brazil

  • Investigational Site Number :0760007

    São Paulo, São Paulo, 01509-900, Brazil

  • Investigational Site Number :0760008

    São Paulo, 04321-120, Brazil

  • Investigational Site Number :1000001

    Sofia, 1797, Bulgaria

  • Investigational Site Number :1000004

    Burgas, 8000, Bulgaria

  • Investigational Site Number :1000005

    Dobrich, Bulgaria

  • Investigational Site Number :1000008

    Rousse, 7002, Bulgaria

  • Investigational Site Number :1240002

    Toronto, Ontario, M4N 3M5, Canada

  • Investigational Site Number :1240004

    Kingston, Ontario, K7L 2V7, Canada

  • Investigational Site Number :1240005

    Montreal, Quebec, H4A 3J1, Canada

  • Investigational Site Number :1240007

    Greenfield Park, Quebec, J4V 2H1, Canada

  • Investigational Site Number :1240014

    Montreal, Quebec, H3T 1S6, Canada

  • Investigational Site Number :1520001

    Viña del Mar, Región de Valparaíso, 2520598, Chile

  • Investigational Site Number :1520002

    Santiago, Reg Metropolitana de Santiago, 8420383, Chile

  • Investigational Site Number :1520003

    Santiago, Chile

  • Investigational Site Number :1520004

    Temuco, La Araucanía, 4810561, Chile

  • Investigational Site Number :1520005

    La Serena, Coquimbo Region, 1720430, Chile

  • Investigational Site Number :1520006

    Santiago, Reg Metropolitana de Santiago, 7650568, Chile

  • Investigational Site Number :1520007

    Santiago, 7500921, Chile

  • Investigational Site Number :1520009

    Talca, Maule Region, Chile

  • Investigational Site Number :1520011

    Santaigo, Reg Metropolitana de Santiago, 8241470, Chile

  • Investigational Site Number :1560001

    Shanghai, 200032, China

  • Investigational Site Number :1560002

    Hangzhou, 310016, China

  • Investigational Site Number :1560003

    Changchun, 130021, China

  • Investigational Site Number :1560005

    Hangzhou, 310022, China

  • Investigational Site Number :1560006

    Hangzhou, 310003, China

  • Investigational Site Number :1560007

    Hangzhou, 310009, China

  • Investigational Site Number :1560008

    Beijing, 100142, China

  • Investigational Site Number :1560011

    Harbin, 150081, China

  • Investigational Site Number :1560013

    Chengdu, 610041, China

  • Investigational Site Number :1560017

    Linyi, 276000, China

  • Investigational Site Number :1560018

    Jinan, 250013, China

  • Investigational Site Number :1560019

    Chongqing, 400030, China

  • Investigational Site Number :1560021

    Dalian, 116027, China

  • Investigational Site Number :1560022

    Zhengzhou, 450008, China

  • Investigational Site Number :1560024

    Wuhan, 430079, China

  • Investigational Site Number :1560025

    Guangzhou, 510080, China

  • Investigational Site Number :1560027

    Xuzhou, 221009, China

  • Investigational Site Number :1560028

    Tianjin, 300060, China

  • Investigational Site Number :1560031

    Dalian, 116011, China

  • Investigational Site Number :1560033

    Wuhan, 430060, China

  • Investigational Site Number :1560035

    Beijing, 100730, China

  • Investigational Site Number :1560036

    Changchun, 130041, China

  • Investigational Site Number :1560037

    Shaoguan, 512025, China

  • Investigational Site Number :1560038

    Baoding, 071000, China

  • Investigational Site Number :1560041

    Hefei, 233004, China

  • Investigational Site Number :1560043

    Fuzhou, 354200, China

  • Investigational Site Number :1560044

    Xi'an, 710061, China

  • Investigational Site Number :1560045

    Xi'an, 710004, China

  • Investigational Site Number :1560046

    Jinan, 250117, China

  • Investigational Site Number :1560048

    Neijiang, 641003, China

  • Investigational Site Number :1560049

    Yantai, 264000, China

  • Investigational Site Number :1560051

    Jining, China

  • Investigational Site Number :1560054

    Deyang, 618000, China

  • Investigational Site Number :1560055

    Luoyang, 471003, China

  • Investigational Site Number :1580001

    Taipei, 100, Taiwan

  • Investigational Site Number :1580002

    Tainan, Taiwan

  • Investigational Site Number :1580003

    Taipei, 10449, Taiwan

  • Investigational Site Number :1580007

    Kaohsiung City, 807, Taiwan

  • Investigational Site Number :2030001

    Brno, 65653, Czechia

  • Investigational Site Number :2030002

    Prague, 12808, Czechia

  • Investigational Site Number :2460001

    Helsinki, 00029, Finland

  • Investigational Site Number :2460002

    Tampere, 33520, Finland

  • Investigational Site Number :2460003

    Turku, FIN-20520, Finland

  • Investigational Site Number :2500001

    Paris, 75248, France

  • Investigational Site Number :2500002

    Saint-Herblain, 44805, France

  • Investigational Site Number :2500003

    Paris, 75010, France

  • Investigational Site Number :2500004

    Villejuif, 94800, France

  • Investigational Site Number :2500005

    Toulouse, 31059, France

  • Investigational Site Number :2500006

    Poitiers, 86021, France

  • Investigational Site Number :2500007

    Saint-Cloud, 92210, France

  • Investigational Site Number :2500009

    Nice, 06189, France

  • Investigational Site Number :2500010

    Strasbourg, 67033, France

  • Investigational Site Number :2680001

    Tbilisi, 0112, Georgia

  • Investigational Site Number :2680002

    Tbilisi, 0144, Georgia

  • Investigational Site Number :2680003

    Tbilisi, 0168, Georgia

  • Investigational Site Number :2680004

    Tbilisi, 0159, Georgia

  • Investigational Site Number :2680005

    Batumi, 6000, Georgia

  • Investigational Site Number :2680006

    Kutaisi, 4600, Georgia

  • Investigational Site Number :2680007

    Tbilisi, 0159, Georgia

  • Investigational Site Number :2760001

    Ulm, 89075, Germany

  • Investigational Site Number :2760003

    Münster, 48149, Germany

  • Investigational Site Number :2760006

    Bottrop, 46236, Germany

  • Investigational Site Number :2760007

    Oldenburg in Holstein, 23758, Germany

  • Investigational Site Number :3480001

    Nyíregyháza, 4400, Hungary

  • Investigational Site Number :3480003

    Kaposvár, 7400, Hungary

  • Investigational Site Number :3480005

    Győr, 9023, Hungary

  • Investigational Site Number :3480008

    Budapest, 1115, Hungary

  • Investigational Site Number :3480009

    Kecskemét, 6000, Hungary

  • Investigational Site Number :3480010

    Miskolc, 3526, Hungary

  • Investigational Site Number :3480011

    Gyula, 5700, Hungary

  • Investigational Site Number :3800002

    Milan, 20141, Italy

  • Investigational Site Number :3800003

    Rozzano, Milano, 20089, Italy

  • Investigational Site Number :3800004

    Milan, 20132, Italy

  • Investigational Site Number :3800005

    Prato, 59100, Italy

  • Investigational Site Number :3800006

    Naples, 80131, Italy

  • Investigational Site Number :3800007

    Monza, Monza E Brianza, 20052, Italy

  • Investigational Site Number :3800008

    Meldola (FC), Emilia-Romagna, 47014, Italy

  • Investigational Site Number :3800010

    Bologna, 40138, Italy

  • Investigational Site Number :3920001

    Sapporo, Hokkaido, 003-0804, Japan

  • Investigational Site Number :3920002

    Kashiwa-shi, Chiba, 277-8577, Japan

  • Investigational Site Number :3920003

    Koto-ku, Tokyo, 135-8550, Japan

  • Investigational Site Number :3920005

    Shinagawa-ku, Tokyo, 142-8666, Japan

  • Investigational Site Number :3920006

    Yokohama, Kanagawa, 241-8515, Japan

  • Investigational Site Number :3920007

    Nagoya, Aichi-ken, 464-8681, Japan

  • Investigational Site Number :3920008

    Osaka, Osaka, 540-0006, Japan

  • Investigational Site Number :3920009

    Matsuyama, Ehime, 791-0280, Japan

  • Investigational Site Number :3920010

    Hiroshima, Hiroshima, 730-8518, Japan

  • Investigational Site Number :3920012

    Kagoshima, Kagoshima-ken, 892-0833, Japan

  • Investigational Site Number :3920013

    Hidaka-shi, Saitama, 350-1241, Japan

  • Investigational Site Number :3920014

    Yokohama, Kanagawa, 222-0036, Japan

  • Investigational Site Number :3920015

    Meguro-ku, Tokyo, 152-8902, Japan

  • Investigational Site Number :3920016

    Nagoya, Aichi-ken, 460-0001, Japan

  • Investigational Site Number :3920017

    Takasaki-shi, Gunma, 370-0829, Japan

  • Investigational Site Number :3920018

    Osaka, Osaka, 553-0003, Japan

  • Investigational Site Number :3920019

    Kurume-shi, Fukuoka, 830-0013, Japan

  • Investigational Site Number :3920020

    Sendai, Miyagi, 980-0803, Japan

  • Investigational Site Number :3920021

    Shizuoka, Shizuoka, 420-8527, Japan

  • Investigational Site Number :3920022

    Miyazaki, Miyazaki, 880-8510, Japan

  • Investigational Site Number :4100001

    Seoul, Seoul-teukbyeolsi, 138-878, South Korea

  • Investigational Site Number :4100002

    Seoul, Seoul-teukbyeolsi, 135-710, South Korea

  • Investigational Site Number :4100003

    Seoul, Seoul-teukbyeolsi, 110-744, South Korea

  • Investigational Site Number :4100004

    Seoul, Seoul-teukbyeolsi, 03722, South Korea

  • Investigational Site Number :4100005

    Seongnam-si, Gyeonggi-do, 463-707, South Korea

  • Investigational Site Number :4100006

    Goyang-si, Gyeonggi-do, 10408, South Korea

  • Investigational Site Number :4100007

    Seoul, Seoul-teukbyeolsi, 02841, South Korea

  • Investigational Site Number :4100008

    Seongnam-si, Gyeonggi-do, 13496, South Korea

  • Investigational Site Number :4100009

    Seochogu, 6591, South Korea

  • Investigational Site Number :5280001

    Maastricht, 6229 HX, Netherlands

  • Investigational Site Number :5280005

    Delft, 2625 AD, Netherlands

  • Investigational Site Number :5280006

    Arnhem, 6815 AD, Netherlands

  • Investigational Site Number :6160002

    Tomaszów Mazowiecki, Lódzkie, 97-200, Poland

  • Investigational Site Number :6160007

    Poznan, Greater Poland Voivodeship, 61-866, Poland

  • Investigational Site Number :6200001

    Lisbon, 1649-035, Portugal

  • Investigational Site Number :6200002

    Porto, 4200-319, Portugal

  • Investigational Site Number :6200005

    Almada, 2801-951, Portugal

  • Investigational Site Number :6430001

    Saint Petersburg, 197758, Russia

  • Investigational Site Number :6430003

    Moscow, 117186, Russia

  • Investigational Site Number :6430004

    Krasnogorskiy District, 143423, Russia

  • Investigational Site Number :6430005

    Moscow, 117997, Russia

  • Investigational Site Number :6430006

    Moscow, 129090, Russia

  • Investigational Site Number :6430007

    Arkhangelsk, 163045, Russia

  • Investigational Site Number :6430008

    Moscow, 115478, Russia

  • Investigational Site Number :6430009

    Moscow Region, 143442, Russia

  • Investigational Site Number :6430010

    Saint Petersburg, 199034, Russia

  • Investigational Site Number :7020001

    Singapore, 329563, Singapore

  • Investigational Site Number :7020002

    Singapore, 119228, Singapore

  • Investigational Site Number :7020004

    Singapore, 169610, Singapore

  • Investigational Site Number :7100004

    Cape Town, 7570, South Africa

  • Investigational Site Number :7100006

    Johannesburg, 1709, South Africa

  • Investigational Site Number :7240001

    Madrid, 28041, Spain

  • Investigational Site Number :7240002

    Madrid / Madrid, Madrid, Comunidad de, 28050, Spain

  • Investigational Site Number :7240003

    Santiago de Compostela, Galicia [Galicia], 15706, Spain

  • Investigational Site Number :7240004

    Madrid, Madrid, Comunidad de, 28046, Spain

  • Investigational Site Number :7240005

    Valencia, Valenciana, Comunidad, 46010, Spain

  • Investigational Site Number :7240006

    Madrid / Madrid, Madrid, Comunidad de, 28007, Spain

  • Investigational Site Number :7240007

    Málaga, 29010, Spain

  • Investigational Site Number :7240008

    Barcelona / Sabadell, Castille and León, 08208, Spain

  • Investigational Site Number :7240009

    Valencia, 46015, Spain

  • Investigational Site Number :7240011

    Barcelona, Barcelona [Barcelona], 08017, Spain

  • Investigational Site Number :7920001

    Istanbul, 34214, Turkey (Türkiye)

  • Investigational Site Number :7920002

    Malatya, 44280, Turkey (Türkiye)

  • Investigational Site Number :7920003

    Edirne, 22030, Turkey (Türkiye)

  • Investigational Site Number :7920004

    Istanbul, 34722, Turkey (Türkiye)

  • Investigational Site Number :7920005

    Bornova, 35100, Turkey (Türkiye)

  • Investigational Site Number :7920006

    Adana, 01120, Turkey (Türkiye)

  • Investigational Site Number :7920007

    Antalya, 07070, Turkey (Türkiye)

  • Investigational Site Number :7920008

    Ankara, 06100, Turkey (Türkiye)

  • Investigational Site Number :7920009

    Ankara, 06200, Turkey (Türkiye)

  • Investigational Site Number :7920010

    Kocaeli, 41380, Turkey (Türkiye)

  • Investigational Site Number :7920011

    Istanbul, 34457, Turkey (Türkiye)

  • Investigational Site Number :7920012

    Izmir, 0000, Turkey (Türkiye)

  • Investigational Site Number :7920013

    Diyarbakır, 21100, Turkey (Türkiye)

  • Investigational Site Number :8040001

    Kryvyi Rih, 50048, Ukraine

  • Investigational Site Number :8040002

    Odesa, 65025, Ukraine

  • Investigational Site Number :8040004

    Kharkiv, 61103, Ukraine

  • Investigational Site Number :8040007

    Vinnytsia, 21029, Ukraine

  • Investigational Site Number :8040010

    Kharkiv, 61166, Ukraine

  • Investigational Site Number :8260001

    Glasgow, Central Bedfordshire, G12 0YN, United Kingdom

  • Investigational Site Number :8260002

    Edinburgh, Edinburgh, City of, EH4 2XU, United Kingdom

  • Investigational Site Number :8260005

    Blackburn, Lancashire, BB2 3HH, United Kingdom

  • Investigational Site Number :8400001

    Pittsburgh, Pennsylvania, 15232, United States

  • Investigational Site Number :8400002

    Ann Arbor, Michigan, 48109, United States

  • Investigational Site Number :8400004

    St Louis, Missouri, 63141, United States

  • Investigational Site Number :8400005

    Kansas City, Missouri, 64111, United States

  • Investigational Site Number :8400006

    Iowa City, Iowa, 52242, United States

  • Investigational Site Number :8400008

    Fort Wayne, Indiana, 46804, United States

  • Investigational Site Number :8400009

    Winston-Salem, North Carolina, 27157, United States

  • Investigational Site Number :8400010

    New York, New York, 10016, United States

  • Investigational Site Number :8400013

    Westwood, Kansas, 66205-2003, United States

  • Investigational Site Number :8400015

    New Brunswick, New Jersey, 08901-1914, United States

  • Investigational Site Number :8400016

    Atlanta, Georgia, 30342, United States

  • Investigational Site Number :8400017

    Boston, Massachusetts, 02114, United States

  • Investigational Site Number :8400023

    Stony Brook, New York, 11794-8121, United States

  • Investigational Site Number :8400024

    Paramus, New Jersey, 00000, United States

  • Investigational Site Number :8400025

    Denver, Colorado, 80262, United States

  • Investigational Site Number :8400028

    Scarborough, Maine, 04074-9308, United States

  • Investigational Site Number :8400029

    Santa Monica, California, 90404, United States

  • Investigational Site Number :8400034

    Savannah, Georgia, 31405, United States

  • Investigational Site Number :8400035

    Thomasville, Georgia, 31792, United States

  • Investigational Site Number :8400038

    Fullerton, California, 92835, United States

  • Investigational Site Number :8400039

    Chicago, Illinois, 60612, United States

  • Investigational Site Number :8400053

    Orlando, Florida, 32804, United States

  • Investigational Site Number :8400055

    Athens, Georgia, 30607, United States

  • Investigational Site Number :8400056

    Los Alamitos, California, 90720, United States

  • Investigational Site Number :8400058

    Las Vegas, Nevada, 89102, United States

  • Investigational Site Number :8400059

    Lakeland, Florida, 33805, United States

  • Investigational Site Number :8400061

    Houston, Texas, 77024, United States

  • Investigational Site Number :8400066

    Tucson, Arizona, 85712, United States

  • Investigational Site Number :8400067

    Tigard, Oregon, 97223, United States

  • Investigational Site Number :8400068

    Houston, Texas, 77024, United States

  • Investigational Site Number :8400069

    Winchester, Virginia, 22601, United States

  • Investigational Site Number :8400070

    Dallas, Texas, 75246, United States

  • Investigational Site Number :8400072

    Dallas, Texas, 75231, United States

  • Investigational Site Number :8400073

    Austin, Texas, 78745, United States

  • Investigational Site Number :8400075

    Daphne, Alabama, 36526, United States

  • Investigational Site Number :8400076

    Danvers, Massachusetts, 01923, United States

  • Investigational Site Number :8400077

    Newton, Massachusetts, 02463, United States

  • Investigational Site Number :8400078

    Waco, Texas, 76712, United States

  • Investigational Site Number :8400080

    Denton, Texas, 76021, United States

  • Investigational Site Number :8400081

    Palm Bay, Florida, 32901, United States

  • Investigational Site Number :8400082

    Webster, Texas, 77598, United States

  • Investigational Site Number :8400083

    Glendale, Arizona, 85308, United States

  • Investigational Site Number :8400084

    Plano, Texas, 75093, United States

  • Investigational Site Number :8400085

    Blacksburg, Virginia, 24060, United States

  • Investigational Site Number :8400086

    The Woodlands, Texas, 77380, United States

Conditions

Explore the condition pages connected to this study.