ClinicalTrials.gg
CompletedNCT03276143FOXTROTUpdated Mar 3, 2020

FactOr XIa inhibiTion for the pRevention of venOus Thromboembolism in Patients Undergoing Total Knee Arthroplasty

A Phase 2 interventional study of Enoxaparin and Apixaban in Knee Arthroplasty, Total, sponsored by Bayer. Completed at 54 sites in 13 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2020-03-03.

Sponsored by Bayer · Phase 2, Interventional, and Prevention

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Phase
Phase 2
Study type
Interventional
Enrollment
813
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 39 studies in Venous Thromboembolism by Bayer — 1 open to participants now, 2 under way, none of them phase 3. Venous Thromboembolism · Bayer.

Enrollment
9th of 16
813 · median 845
Started
2017
with 2 others
Phase 2
6 of 39
none open now
Registered
27th of 39
by date

Among the 39 studies in Venous Thromboembolism by Bayer, this one is the 9th largest by enrollment of the 16 interventional ones that give a count, is one of 3 that started in 2017, is one of 6 in phase 2, and was the 27th registered.

Venous Thromboembolism

713 studies on the registry are indexed under Venous Thromboembolism; 147 are open to participants now.

Browse Venous Thromboembolism studies →

Open to participants now

1 of the 39 studies in Venous Thromboembolism by Bayer is open now, in 4 countries. Recruiting first, the newest first:

By country, each count listing its studies:

Who these studies take

Of the 113 Venous Thromboembolism studies recruiting now, 90 (80%) set no upper age limit and 13 (12%) stop at 75 or younger; 9 take children under 18; 10 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 39 studies in Venous Thromboembolism by Bayer, or all of them as a file.
02

Study summary

This study was to compare the study drug BAY1213790 to existing therapies, i.e. enoxaparin or apixaban, for the prevention of blood clotting and safety in patients undergoing total knee arthroplasty (TKA). The study was open-label, but observer-blinded for the different doses of BAY1213790. This means that it was known which treatment was given, but it was not known which dose of BAY1213790 was administered.

03

Conditions studied

  • Knee Arthroplasty, Total

Keywords

  • Orthopedic surgery
  • Venous thromboembolism
  • Deep vein thrombosis (DVT)
  • Anticoagulation
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients aged ≥18 years and undergoing elective primary, unilateral Total Knee Arthroplasty (TKA)
  • Women of non-

Exclusion criteria

Exclusion Criteria:

  • High risk for bleeding
  • Prior deep vein thrombosis
  • Body weight above 135 kg
  • below 60 ml/min
  • Recent (\<6 months) myocardial infarction or ischemic stroke
  • listed in the local label of the comparator treatments
  • Requirement for full dose anticoagulation or dual antiplatelet therapy
Terms in these criteria, in plain language(4)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Phase 2
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
813 participants (actual)

Study arms

  • Active comparator
    Enoxaparin

    Adult patients who underwent Total Knee Arthroplasty (TKA) surgery and received enoxaparin for at least 10 days until venography was performed.

    Drug: Enoxaparin

  • Active comparator
    Apixaban

    Adult patients who underwent Total Knee Arthroplasty (TKA) surgery and received apixaban for at least 10 days until venography was performed.

    Drug: Apixaban

  • Experimental
    BAY1213790 0.3 mg/kg (post-surgery)

    Adult patients who underwent Total Knee Arthroplasty (TKA) surgery and received 0.3 mg BAY1213790 once post-surgery.

    Drug: BAY1213790

  • Experimental
    BAY1213790 0.6 mg/kg (post-surgery)

    Adult patients who underwent Total Knee Arthroplasty (TKA) surgery and received 0.6 mg BAY1213790 once post-surgery.

    Drug: BAY1213790

  • Experimental
    BAY1213790 1.2 mg/kg (post-surgery)

    Adult patients who underwent Total Knee Arthroplasty (TKA) surgery and received 1.2 mg BAY1213790 once post-surgery.

    Drug: BAY1213790

  • Experimental
    BAY1213790 1.8 mg/kg (post-surgery)

    Adult patients who underwent Total Knee Arthroplasty (TKA) surgery and received 1.8 mg BAY1213790 once post-surgery.

    Drug: BAY1213790

  • Experimental
    BAY1213790 0.3 mg/kg (pre-surgery)

    Adult patients who underwent Total Knee Arthroplasty (TKA) surgery and received 0.3 mg BAY1213790 once pre-surgery.

    Drug: BAY1213790

  • Experimental
    BAY1213790 1.8 mg/kg (pre-surgery)

    Adult patients who underwent Total Knee Arthroplasty (TKA) surgery and received 1.8 mg BAY1213790 once pre-surgery.

    Drug: BAY1213790

Interventions

  • 40 mg enoxaparin administered as subcutaneous injection once daily

  • 2.5 mg apixaban administered as tablet orally twice daily

  • Single dose of BAY1213790 administered as intravenous infusion

    Also known as: Osocimab

06

What researchers measure

Primary outcomes

  1. Incidence of composite endpoint consisting of asymptomatic DVT as detected by mandatory bilateral venography, objectively confirmed symptomatic DVT, non-fatal PE, fatal PE, unexplained death for which PE cannot be excluded

    DVT - Deep vein thrombosis / PE - Pulmonary embolism All suspected events were reviewed and classified by the Central Independent Adjudication Committee.

    Time frame: Up to 15 days

  2. Incidence of composite endpoint of major and clinically relevant non-major bleeding

    All suspected events were reviewed and classified by the Central Independent Adjudication Committee.

    Time frame: Up to 15 days

Secondary outcomes

  1. Incidence of composite endpoint of symptomatic DVT, non-fatal PE, fatal PE, unexplained death for which PE cannot be excluded up to Day 157 or objectively confirmed asymptomatic DVT up to Day 15

    All suspected events were reviewed and classified by the Central Independent Adjudication Committee.

    Time frame: Up to 157 days

  2. Incidence of composite endpoint of major and clinically relevant non-major bleeding

    All suspected events were reviewed and classified by the Central Independent Adjudication Committee.

    Time frame: Up to 157 days

07

Study locations

54 sites
  • UMHAT Sveti Georgi
    Plovdiv, 4002, Bulgaria
  • Acibadem City Clinic Multiprofile Hospital for Active Treatm
    Sofia, 1407, Bulgaria
  • UMHAT Tsaritsa Joanna-ISUL EAD Sofia
    Sofia, 1527, Bulgaria
  • Medical Investigative & Clinical Evaluation Inc.
    Windsor, Ontario N8W 1E6, Canada
  • Fakultni nemocnice u sv. Anny
    Brno, 656 91, Czechia
  • Nemocnice Ceske Budejovice, a.s.
    Ceske Budejovice, 370 87, Czechia
  • Okresni nemocnice Jindrichuv Hradec
    Jindrichuv Hradec, 377 38, Czechia
  • Regional Hospital Pardubice
    Pardubice, 530 03, Czechia
  • KAT General Hospital of Athens
    Kifisia, 14561, Greece
  • Konstantopoulio General Hospital of Nea Ionia - Agia Olga
    Nea Ionia, 14233, Greece
  • University General Hospital of Patras
    Patras, 265 04, Greece
  • Papageorgiou General Hospital of Thessaloniki
    Thessaloniki, 56403, Greece
  • Rambam Health Corporation
    Haifa, 3109601, Israel
  • Lady Davis Carmel Medical Center
    Haifa, 3436212, Israel
  • Meir Medical Center
    Kfar-Saba, 4428164, Israel
  • Clalit Health Services through Rabin Medical Center - Beilinson Campus
    Petah Tikva, 4941492, Israel
  • Kaplan Medical Center
    Rehovot, 7610001, Israel
  • Liepaja Regional Hospital
    Liepaja, LV-3414, Latvia
  • Riga 2nd City Hospital
    Riga, LV-1004, Latvia
  • Hospital of Traumatology and Orthopaedics
    Riga, LV-1005, Latvia
  • Valmiera Hospital
    Valmiera, LV-4201, Latvia
  • Kaunas clinical hospital (Laisves ave.)
    Kaunas, LT-44320, Lithuania
  • Lithuanian university of Health science
    Kaunas, LT-50009, Lithuania
  • PI Klaipedos University Hospital
    Klaipeda, LT-92288, Lithuania
  • Republican Vilnius University Hospital
    Vilnius, LT-04130, Lithuania
  • Vilnius University Hospital Santaros Klinikos
    Vilnius, LT-08661, Lithuania
  • Uniwersytecki Szpital Kliniczny w Bialymstoku
    Bialystok, 15-276, Poland
  • Wojewódzki Szpital Zespolony
    Kielce, Poland
  • Szpital Specjalistyczny im. Rydygiera
    Krakow, 31-826, Poland
  • Centralny Szpital Kliniczny Uniwersytetu Medycznego w Lodzi
    Lodz, 92-213, Poland
  • Wojewodzki Szpital Specjalistyczny im. S. Wyszynskiego SPZOZ
    Lublin, 20-718, Poland
  • Uniwersytecki Szpital Kliniczny UM we Wroclawiu
    Wroclaw, 50-556, Poland
  • Hospital de Cascais
    Alcabideche, Lisboa 2755-009, Portugal
  • CHS - Hospital Ortopedico Sant Iago do Outao
    Setubal, Setúbal 2900-182, Portugal
  • CHBV - Hospital Infante D. Pedro
    Aveiro, 3810-501, Portugal
  • CHL - Hospital Santo Andre
    Leiria, 2410-197, Portugal
  • ULSAM - Hospital Santa Luzia
    Viana do Castelo, 4901-858, Portugal
  • Russian Scientific Center n.a. acad. G.A. Ilizarov
    Kurgan, 640014, Russian Federation
  • Privolzhskiy Federal Medical Research Center
    Nizhny Novgorod, 603155, Russian Federation
  • City Hospital #2
    St. Petersburg, 194354, Russian Federation
  • Sci-Res. Institute of Traumatology and Orthopaedia
    St. Petersburg, 195427, Russian Federation
  • Clinical Hospital for Emergency Care n.a. N.V.Solovyov
    Yaroslavl, 150003, Russian Federation
  • Pretoria Academic Hospital New
    Pretoria, Gauteng 0084, South Africa
  • UCT Clinical Research Centre
    Cape Town, Western Cape, South Africa
  • Clinical Projects Research SA
    Worcester, Western Cape 6850, South Africa
  • Ciutat Sanitària i Universitària de Bellvitge
    L'Hospitalet de Llobregat, Barcelona 08907, Spain
  • Fundación Hospital Alcorcón
    Alcorcón, Madrid 28922, Spain
  • Ciutat Sanitària i Universitaria de la Vall d'Hebron
    Barcelona, 08035, Spain
  • Hospital Clínic i Provincial de Barcelona
    Barcelona, 08036, Spain
  • Complejo Hospitalario de Jaén
    Jaén, 23009, Spain
  • Hospital Clínico Universitario San Carlos
    Madrid, 28040, Spain
  • Cherkasy Reg Clinical Hospital of Cherkasy Reg Council
    Cherkasy, 18009, Ukraine
  • Ivano-Frankivsk Regional Clinical Hospital
    Ivano-Frankivsk, 76008, Ukraine
  • Kyiv Regional Clinical Hospital
    Kyiv, 4107, Ukraine
08

References and documents

Publications

  • Weitz JI, Bauersachs R, Becker B, Berkowitz SD, Freitas MCS, Lassen MR, Metzig C, Raskob GE. Effect of Osocimab in Preventing Venous Thromboembolism Among Patients Undergoing Knee Arthroplasty: The FOXTROT Randomized Clinical Trial. JAMA. 2020 Jan 14;323(2):130-139. doi: 10.1001/jama.2019.20687. PubMed 31935028 ↗
09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Sep 2017 to primary completion in Aug 2018, 10 months.

Of 27 phase 2 interventional studies under Venous Thromboembolism, half reached primary completion within 26 months of starting (the median), counting those still running; a quarter within 12 and three quarters within 50. This study's 10 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 7, 2017
First posted
Sep 8, 2017
StartActual
Sep 21, 2017
Primary completionActual
Aug 20, 2018
CompletionActual
Jan 2, 2019
Last update
Mar 3, 2020
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 3, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03276143
Lead sponsor
Bayer
Responsible party
Sponsor
First posted
Sep 8, 2017
Start date
Sep 21, 2017
Primary completion
Aug 20, 2018
Completion
Jan 2, 2019
Last update
Mar 3, 2020

Study contacts

Bayer Study Director
study director · Bayer

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Feb 2020. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Osocimab

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