Cancer clot study halted: new drug vs standard care
NCT ID NCT05171049
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested a new blood thinner, abelacimab, against the standard drug apixaban in about 1,150 people with cancer who had a blood clot. The goal was to see which drug better prevented new clots and caused less bleeding. The study was stopped early, but the results may still help doctors choose safer treatments for cancer patients at risk of dangerous clots.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
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1,150 people
The number who actually took part.
- Started
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May 2022
- Finished
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Feb 2026
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Male or female subjects ≥18 years old or other legal maturity age according to the country of residence * Confirmed diagnosis of cancer (by histology, adequate imaging modality), other than basal-cell or squamous-cell carcinoma of the skin alone with one of the following: * Active cancer, defined as either locally active, regionally invasive, or metastatic cancer at the time of randomization and/or * Currently receiving or having received anticancer therapy (radiotherapy, chemotherapy, hormonal therapy, any kind of targeted therapy or any other anticancer therapy) in the last 6 months. * Confirmed symptomatic or incidental proximal lower limb deep vein thrombosis (DVT) (i.e., popliteal, femoral, iliac, and/or inferior vena cava \[IVC\] thrombosis) and/or a confirmed symptomatic pulmonary embolism (PE), or an incidental PE in a segmental, or larger pulmonary artery. Patients are eligible within 120 hours from diagnosis of the qualifying VTE * Anticoagulation therapy with a therapeutic dose of DOAC for at least 6 months is indicated * Able to provide written informed consent Exclusion Criteria: * Thrombectomy, insertion of a caval filter or use of a fibrinolytic agent to treat the current (index) DVT and/or PE * More than 120 hours of pre-treatment with therapeutic doses of UFH, LMWH, fondaparinux, DOAC, or other anticoagulants * An indication to continue treatment with therapeutic doses of an anticoagulant other than that VTE treatment prior to randomization (e.g., atrial fibrillation \[AF\], mechanical heart valve, prior VTE) * Platelet count \<50,000/mm3 at the screening visit * PE leading to hemodynamic instability (blood pressure \[BP\] \<90 mmHg or shock) * Acute ischemic or hemorrhagic stroke or intracranial hemorrhage within the 4 weeks preceding screening * Brain trauma or a cerebral or spinal cord surgery or spinal procedures such as lumbar puncture or epidural/spinal anesthesia within 4 weeks of screening * Need for aspirin in a dosage of \>100 mg/day or any other antiplatelet agent alone or in combination with aspirin * Primary brain cancer or untreated intracranial metastases at baseline * Acute myeloid or lymphoid leukemia * Bleeding requiring medical attention at the time of randomization or in the preceding 4 weeks * Planned brain, spinal cord, cardiac, vascular, major thoracic and/or major abdominal surgery in the 4 weeks following randomization * Eastern Cooperative Oncology Group (ECOG) performance status of 3 or 4 at screening * Life expectancy \<3 months at randomization * Calculated creatinine clearance (CrCl) \<30 mL/min (Cockcroft-Gault equation) at the screening visit * Hemoglobin \<8 g/dL at the screening visit * Acute hepatitis, chronic active hepatitis, liver cirrhosis; or an alanine aminotransferase (ALT) ≥3 x and/or bilirubin ≥2 x upper limit of normal (ULN) at the screening visit in absence of clinical explanation * Uncontrolled hypertension (systolic BP\>180 mm Hg or diastolic BP \>100 mm Hg despite antihypertensive treatment) * Women of child-bearing potential (WOCBP) who are unwilling or unable to use highly effective contraceptive measures during the study from screening up to 3 days after last treatment of apixaban or 100 days after administration of abelacimab (See Section 5.3.6. for highly effective contraceptive measures) * Sexually active males with sexual partners of childbearing potential must agree to use a condom or other reliable contraceptive measure up to 3 days after last treatment of apixaban or 100 days after administration of abelacimab * Pregnant or breast-feeding women * Patients known to be receiving strong dual inducers or inhibitors of both CYP3A4 and P gp * History of hypersensitivity to any of the study drugs (including apixaban) or excipients, to drugs of similar chemical classes, or any contraindication listed in the label for apixaban * Subjects with any condition that in the Investigator's judgement would place the subject at increased risk of harm if he/she participated in the study * Use of other investigational (not registered) drugs within 5 half-lives prior to enrollment or until the expected pharmacodynamic(s) (PD) effect has returned to baseline, whichever is longer. Participation in academic non-interventional studies or interventional studies, comprising testing different strategies or different combinations of registered drugs is permitted
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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1st Affiliate Hospital of Xi'an Jiao
Xi'an, 710061, China
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A.O.U. Policlinico di Modena
Modena, 41124, Italy
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Akershus Univeristy Hospital
Lørenskog, 1478, Norway
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Albert Schweitzer Ziekenhuis, Dordwijk
Dordrecht, 3317, Netherlands
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Amsterdam University Medical Center
Holland, 1105AZ, Netherlands
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Arcispedale S. Maria Nuova Azienda Ospedaliera di Reggio Emilia
Bologna, 40133, Italy
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Arcispedale S. Maria Nuova Azienda Ospedaliera di Reggio Emilia
Reggio Emilia, 42123, Italy
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Azienda Ospedale - Università Padova
Padova, 35128, Italy
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Azienda Ospedaliero Universitaria Pisana
Pisa, 56126, Italy
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Azienda Ospedaliero Universitaria San Martino
Genova, 16132, Italy
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Azienda Ospedaliero Universitaria di Parma
Parma, 43100, Italy
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Azienda Ospedaliero-Universitaria Santa Maria della Misericordia
Udine, 33100, Italy
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Azienda Socio Sanitaria Territoriale Papa Giovanni XXIII
Bergamo, 24127, Italy
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Azienda Socio Sanitaria Territoriale Santi Paolo e Carlo
Milan, 20142, Italy
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Bacs-Kiskun County Hospital
Kecskemét, 6000, Hungary
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Barts Health NHS Trust
London, ENG, E1 188, United Kingdom
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Beaumont Hospital
Dublin, V2N0, Ireland
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Beijing Shijitan Hosp.
Beijing, 100038, China
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Beth Israel Deaconess Medical Center
Boston, Massachusetts, 02215-5400, United States
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Blacktown Hospital
Blacktown, New South Wales, 2148, Australia
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Blood Center of Wisconsin
Milwaukee, Wisconsin, 53226, United States
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Bon Secour Hospital
Cork, Ireland
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Box Hill Hospital
Box Hill, Victoria, 3128, Australia
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Brigham and Women's Hospital
Boston, Massachusetts, 02115, United States
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CH Le Puy en Velay
Le Puy-en-Velay, 43000, France
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CHU Amiens - Hopital Nord
Amiens, 80057, France
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CHU Angers - Hôpital Hôtel Dieu
Angers, 49933, France
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CHU Clermont Ferrand - Hopital Gabriel Montpied
Clermont-Ferrand, 63003, France
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CHU Dijon - Hôpital Bocage Central
Dijon, 21079, France
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CHU Strasbourg - Nouvel Hôpital Civil
Strasbourg, 67091, France
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CHU de Brest - Hôpital de la Cavale Blanche
Brest, 29609, France
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CHU de Grenoble - Hôpital Albert Michallon
Grenoble, 38043, France
-
CHU de Limoges - Hôpital Dupuytren
Limoges, 87042, France
-
CHU de Nancy - Hôpital de Brabois Adultes
Vandœuvre-lès-Nancy, 54500, France
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CHU de Nancy - Hôpital de Brabois Adultes
Vandœuvre-lès-Nancy, 54511, France
-
CHU de Rouen - Hôpital de Bois Guillaume
Rouen, 76031, France
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CHU de Saint-Etienne - Hopital Nord
Saint-Etienne, 42000, France
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CHU de Toulouse - Hôpital Rangueil
Toulouse, 31059, France
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Castle Hill Hospital, Department of Oncology & Haematology
Cottingham, ENG, HU16 5JQ, United Kingdom
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Centre Hospitalier Intercommunal de Toulon
Toulon, 83000, France
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Centre Hospitalier Universitaire Vaudois
Lausanne, 1011, Switzerland
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Centre hospitalier des pays de Morlaix
Morlaix, 29600, France
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Chibaken Saiseikai Narashino Hospital
Chiba, 275-0006, Japan
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China Medical University Hospital
Taichung, 40447, Taiwan
-
Cleveland Clinic Foundation
Cleveland, Ohio, 44195, United States
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Clinica Universidad de Navarra
Madrid, 28027, Spain
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Clinica Universidad de Navarra
Pamplona, 31008, Spain
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Complejo Hospitalario Universitario de Orense
Ourense, 32005, Spain
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Complejo Hospitalario Universitario de Santiago
Santiago de Compostela, 15706, Spain
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Concord Repatriation General Hospital
Concord, New South Wales, 2139, Australia
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Cork University Hospital
Cork, Ireland
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Corporacio Sanitaria Parc Tauli
Sabadell, 8208, Spain
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Daegu Catholic University Medical Center
Daegu, 42472, South Korea
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Daugavpils Regional Hospital
Daugavpils, LV-5417, Latvia
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Debreceni Egyetem
Debrecen, H-4032, Hungary
-
Dong-A University Hospital
Seogu, 49201, South Korea
-
Duke University Medical Center
Durham, North Carolina, 27710, United States
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Ewha Womans University Mokdong Hospital
Yangcheon, 07985, South Korea
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Far Eastern Memorial Hospital
New Taipei City, 220, Taiwan
-
Fondazione Policlinico Universitario A. Gemelli IRCCS.
Roma, 168, Italy
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Groupe Hospitalier Pitie-Salpetriere
Paris, 75651, France
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Gundersen Health System
La Crosse, Wisconsin, 54601, United States
-
Haga Ziekenhuis
The Hague, 2545 AA, Netherlands
-
Hallym University Sacred Heart Hospital
Anyang, 14068, South Korea
-
Hamilton Health Sciences, Juravinski Hospital and Cancer Centre
Hamilton, Ontario, L8V 1C3, Canada
-
Henry Ford Health System
Detroit, Michigan, 48202, United States
-
Hopital Timone Adultes
Marseille, 13385, France
-
Hopital Universitaire Geneve
Geneva, 1205, Switzerland
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Hospices Civils de Lyon (HCL) - Centre Hospitalier Lyon-Sud
Pierre-Bénite, 69310, France
-
Hospital Clinic de Barcelona
Barcelona, 8036, Spain
-
Hospital General Universitario Gregorio Marañon
Madrid, 28007, Spain
-
Hospital General Universitario de Elche
Elche, 3203, Spain
-
Hospital Universitario Ciudad de Jaen
Jaén, 23007, Spain
-
Hospital Universitario Clinico San Carlos
Madrid, 28040, Spain
-
Hospital Universitario Del Vinalopo
Elche, 03001, Spain
-
Hospital Universitario Infanta Leonor
Madrid, 28031, Spain
-
Hospital Universitario Lucus Augusti
Lugo, 27003, Spain
-
Hospital Universitario Marques de Valdecilla
Santander, 39012, Spain
-
Hospital Universitario Puerta de Hierro Majadahonda
Majadahonda, 28220, Spain
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Hospital Universitario Virgen de las Nieves
Granada, 18014, Spain
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Hospital Universitario Virgen del Rocio
Seville, 41013, Spain
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Hospital de la Santa Creu I Sant Pau
Barcelona, 8041, Spain
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Huizhou Municipal Central Hospital
Huizhou, 516001, China
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Hôpital Européen Georges Pompidou
Paris, 75015, France
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Hôpital Louis Mourier
Colombes, 92700, France
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IRCCS Istituto Tumori Giovanni Paolo II
Bari, 70124, Italy
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Ikazia Ziekenhuis
Rotterdam, 3083 AN, Netherlands
-
International University of Health and Welfare MITA Hospital
Tokyo, 108-8329, Japan
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Istituto Clinico Humanitas
Rozzano, 20089, Italy
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Istituto Nazionale Tumori Fondazione G. Pascale
Naples, 80131, Italy
-
Jeonbuk National University Hospital
Jeonju, 54907, South Korea
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Jewish General Hospital
Montreal, Quebec, H3T-1E2, Canada
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Jiangsu Province Hospital
Nanjing, 210029, China
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Jilin Province Tumor Hospital
Ch’ang-ch’un, 130012, China
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Juntendo University Hospital
Tokyo, 113-8421, Japan
-
Kaohsiung Medical University Chung-Ho Memorial Hospital
Kaohsiung City, 807, Taiwan
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Klinikum der Universitaet Muenchen
München, 80336, Germany
-
Kobe University Hospital
Kobe, 650-0017, Japan
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Koo Foundation Sun Yat-Sen Cancer Center
Taipei, 112, Taiwan
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Kumamoto University Hospital
Kumamoto, 860-8556, Japan
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Kyorin University Hospital
Tokyo, 181-8611, Japan
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Kyoto University Hospital
Kyoto, 606-8507, Japan
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Kyushu University Hospital
Fukuoka, 812-8582, Japan
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LK Wiener Neustadt
Neustadt, 2700, Austria
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LKH - Universitätsklinikum Graz
Graz, 8010, Austria
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Leids Universitair Medisch Centrum
Leiden, 2333 ZA, Netherlands
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Liepaja Regional Hospital
Liepāja, LV3414, Latvia
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Lipson Cancer Institute
Rochester, New York, 14621, United States
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Länssjukhuset Sundsvall-Härnösand
Sundsvall, 85186, Sweden
-
MD Anderson Cancer Center
Houston, Texas, 77030, United States
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MD Anderson Cancer Centre
Madrid, 28033, Spain
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Markhot Ferenc Oktatokorhaz es Rendelointezet
Eger, H-3300, Hungary
-
Masarykuv onkologicky ustav
Brno, 65653, Czechia
-
McGill University Health Centre
Montreal, Quebec, H4A 3J1, Canada
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McGill University Health Centre
Québec, H4A 3J1, Canada
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Meander Medisch Centrum
Amersfoort, 1066 EC, Netherlands
-
Meander Medisch Centrum
Amersfoort, 3813, Netherlands
-
Medical University of Vienna
Vienna, 1090, Austria
-
Memorial Sloan Kettering Cancer Center
New York, New York, 10021-0005, United States
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Memorial Sloan Kettering Cancer Center-Commack
Commack, New York, 11725, United States
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Memorial Sloan Kettering Cancer Center-Middletown
Middletown, New Jersey, 07748, United States
-
Memorial Sloan Kettering Cancer Center-West Harrison
Harrison, New York, 10604, United States
-
Mie University Hospital
Mie, 514-8507, Japan
-
Monash Medical Centre Clayton
Clayton, Victoria, 3168, Australia
-
Msdyrt Midericordiae University Hospital
Dublin, Ireland
-
Myongji Hospital
Goyang-si, Gyeonggi-do, 10475, South Korea
-
Nanfang Hospital of Southern Medical University
Guangzhou, 510515, China
-
Nanjing First Hospital
Nanjing, 210006, China
-
National Cancer Center Hospital
Tsukiji, Tokyo, 104-0045, Japan
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National Cheng Kung University Hospital
Tainan, 70403, Taiwan
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National Taiwan University Hospital
Taipei, 100, Taiwan
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Nemocnice Na Pleši s.r.o.
Nová Ves pod Pleší, 26204, Czechia
-
Niagara Health System
Saint Catharines, Ontario, L2S 0A9, Canada
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NorthShore University Health System
Evanston, Illinois, 60201, United States
-
Northern Health
Epping, Victoria, 3076, Australia
-
Nouvel Hôpital Civil de Strasbourg
Strasbourg, 67091, France
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Okayama Medical Center
Okayama, 7011192, Japan
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Onkologická klinika VFN a 1. LF UK
Prague, 128 08, Czechia
-
Onze Lieve Vrouwe Gasthuis, Locatie Oost
Amsterdam, 1091 AC, Netherlands
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Onze Lieve Vrouwe Gasthuis, Locatie Oost
Amsterdam, 1091, Netherlands
-
Osaka International Cancer Institute
Osaka, 541-8567, Japan
-
Ospedale Civile Dell Annunziata
Cosenza, 87100, Italy
-
Ospedale Degli Infermi
Faenza, 48018, Italy
-
Ospedale SS. Giovanni e Paolo
Venezia, 30122, Italy
-
Ospedale San Bortolo di Vicenza
Vicenza, 36100, Italy
-
Ospedale Santa Maria di Cà Foncello
Treviso, 35128, Italy
-
Ospedalemichele e Pietro ferrer
Verduno, 12060, Italy
-
Ottawa Hospital
Ottawa, Ontario, K1H BL6, Canada
-
Pauls Stradins Clinical University Hospital
Riga, LV-1002, Latvia
-
Peking University Third Hospital
Beijing, 100191, China
-
Perth Blood Institute
Perth, 6005, Australia
-
Praxis für Gefäßmedizin
Görlitz, 2827, Germany
-
Presidio Ospedaliero di Castelfranco Veneto
Castelfranco Veneto, 31033, Italy
-
Queen Elizabeth II Health Sciences Centre
Nova Scotia, B3H 2Y9, Canada
-
Queen Elizabeth University Hospital Campus
Glasgow, SCO, G514TF, United Kingdom
-
Radboud Universitair Medisch Centrum
Nijmegen, 6525, Netherlands
-
Rode Kruis Ziekenhuis
Beverwijk, 1942, Netherlands
-
SS. ma Annunziata
Chieti, 66100, Italy
-
Sault Area Hospital
Sault Ste. Marie, Ontario, P6A 0A8, Canada
-
Seoul National University Bundang Hospital
Seongnam-si, Gyeonggi-do, 13620, South Korea
-
SoonChunHyang University Hospital Bucheon
Bucheon-si, 14584, South Korea
-
Soonchunhyang University Seoul Hospital
Seoul, 4401, South Korea
-
Soonchunhyang University Seoul Hospital
Yongsan, 04401, South Korea
-
Southern Medical University - Zhujiang Hospital
Guangdong, 510280, China
-
Spaarne Gasthuis (Kennemer Gasthuis) - Haarlem-Zuid
Hoofddorp, 2134TM, Netherlands
-
Staedtisches Klinikum Dresden Standort Dresden-Friedrichstadt
Dresden, 1067, Germany
-
Taichung Veterans General Hospital
Taichung, 40705, Taiwan
-
Tergooiziekenhuizen, Hilversum
Hilversum, 1213, Netherlands
-
The Alfred Hospital
Prahran, 3181, Australia
-
The First Affiliated Hospital of Wenzhou Medical University
Wenzhou, 325000, China
-
The Newcastle Upon Tyne Hospitals
Newcastle upon Tyne, ENG, NE7 7DN, United Kingdom
-
The Sixth Affiliated Hospital of Sun Yat-Sen University
Guangzhou, 510655, China
-
Thomayerova nemocnice
Prague, 14059, Czechia
-
Tohoku University Graduate School of Medicine
Miyagi, 980-8574, Japan
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Tokai University Hospital
Isehara, 259-1193, Japan
-
Tokyo Saiseikai Central Hospital
Minatoku, 108-0073, Japan
-
Tongji Hospital, Tongji Medical College
Wuhan, 430030, China
-
Toronto General Hospital
Toronto, Ontario, M5G 2C4, Canada
-
Tri-Service General Hospital
Taipei, 114, Taiwan
-
Union Hospital Tongji Medical College Huazhong University of Science &Technology
Wuhan, 430023, China
-
Universit degli Studi di Perugia - Azienda Ospedaliera di Perugia
Perugia, 6132, Italy
-
Universitaetsklinikum Carl Gustav Carus TU Dresden
Dresden, 1307, Germany
-
Universitaetsklinikum Hamburg-Eppendorf
Hamburg, 20246, Germany
-
Universitaetsklinikum Magdeburg A.oe.R
Magdeburg, 39120, Germany
-
Universitair Medisch Centrum Groningen
Groningen, 9713, Netherlands
-
University Hospital Hradec Kralove
Hradec Králové, 50005, Czechia
-
University Hospital of Wales
Cardiff, England, CF14 4XW, United Kingdom
-
University Hospital, Limerick
Limerick, V94 T9PX, Ireland
-
University Hospitals of North Midlands
Stafford, England, ST16 3SA, United Kingdom
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University Hospitals of North Midlands
Stoke-on-Trent, England, ST4 6QG, United Kingdom
-
University of Alberta Hospital
Edmonton, Alberta, T6G2V2, Canada
-
University of Calgary
Calgary, Alberta, T2N 1N4, Canada
-
University of Colorado Anschutz Medical Campus
Aurora, Colorado, 80045, United States
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University of Kentucky, Markey Cancer Center
Lexington, Kentucky, 40536-0093, United States
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University of Miami Health
Miami, Florida, 33136, United States
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University of Oklahoma Health Sciences Center
Oklahoma City, Oklahoma, 73104, United States
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University of Pennsylvania - Penn Blood Disorders Center
Philadelphia, Pennsylvania, 19104, United States
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University of Texas Mays Cancer Center
San Antonio, Texas, 78229, United States
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University of Zürich
Zurich, 8091, Switzerland
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Università dell'Insubria
Varese, 21100, Italy
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Universitätsklinik Leipzig
Leipzig, 4103, Germany
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Universitätsklinik der Christian-Albrechts-Universität
Kiel, 24105, Germany
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VA Connecticut Healthcare System
West Haven, Connecticut, 06516-5907, United States
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Washington DC VAMC
Washington D.C., District of Columbia, 20422, United States
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Washington University
St Louis, Missouri, 63110, United States
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Westmead Hospital
Westmead, New South Wales, 2145, Australia
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Yokohama Minami Kyosai Hospital
Kanagawa, 236-0037, Japan
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Yongin Severance Hospital, Yonsei University Health System
Yongin-si, Gyeonggi-do, 16995, South Korea
-
Østfold Hospital Kalnes
Fredrikstad, 1603, Norway
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