ClinicalTrials.gg
WithdrawnNCT03393481Updated Oct 8, 2020

Prevention of Thromboembolic Events in Total Knee Replacement Patients

A Phase 2 interventional study of MAA868 and Enoxaparin in Thrombotic Disorders, sponsored by Novartis Pharmaceuticals. Withdrawn. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2020-10-08.

Sponsored by Novartis Pharmaceuticals (part of Novartis) · Phase 2, Interventional, and Prevention

Why this study was withdrawn
Trial cancelled before First Patient First Visit (no patient enrolled)
Phase
Phase 2
Study type
Interventional
Enrollment
0
Allocation
Not applicable
Ages
18 Years to 80 Years
Sex
All
01

Study summary

The purpose of the study is to find out whether MAA868, is able to prevent blood clots following your medical condition (surgery for knee replacement)

02

Conditions studied

  • Thrombotic Disorders

Keywords

  • biologic,
  • venous thromboembolism,
  • unilateral knee arthroplasty
03

In context

Venous Thromboembolism

712 studies on the registry are indexed under Venous Thromboembolism; 146 are open to participants now.

Browse Venous Thromboembolism studies →

Lead sponsor

Novartis Pharmaceuticals is the lead sponsor of 2,718 studies on the registry; 221 are open to participants now.

Of its 585 completed or terminated interventional studies of FDA-regulated products, 438 (75%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 80 Years
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

  • Scheduled to undergo elective unilateral total knee arthroplayts (TKA)
  • Willing to comply with study requirements including bilateral venography at Day 12 ± 2 days
  • Body weight between 50 kg and 130 kg inclusive.
  • Normal , PT, INR at screening

Exclusion criteria

Exclusion Criteria:

History of arterial or venous thromboembolism; abnormally extended primary or secondary bleeding after trauma or intervention, stroke, or traumatic or non-traumatic intracranial bleed; bleeding disorder; MI or unstable angina pectoris within 12 months of the screening; Uncontrolled hypertension (SBP/DBP ≥ 150/95 mmHg at the screening).

Medications that increase the risk of bleeding, including antiplatelet (such as aspirin), anticoagulant and fibrinolytic agents; \< 60 mL/min/1.73m2; Poorly controlled diabetes ( >10%); Liver dysfunction (/AST >3 xULN or TBL >2 x ); ≥ 40 kg/m2

Terms in these criteria, in plain language(7)

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.

INR, PT and aPTT (clotting tests)

Blood tests of how long blood takes to clot. The INR is the prothrombin time (PT) put on a common scale; about 1 is usual for someone not taking a blood thinner.

Criteria often make an exception for people on a blood thinner such as warfarin, whose INR is raised on purpose.

TIA (transient ischaemic attack)

A “mini-stroke”: temporary stroke-like symptoms caused by reduced blood flow to part of the brain, spinal cord or eye, without signs of a new stroke on a scan.

Stroke symptoms need emergency care at once, even if they go away.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

HbA1c

A blood test of average blood sugar over the past two to three months, given as a percentage or in mmol/mol. 6.5% (48 mmol/mol) or more is the usual threshold for diabetes, normally confirmed by a second test.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

05

Study design

Phase
Phase 2
Primary purpose
Prevention
Allocation
Not applicable
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
0 participants (actual)

Study arms

  • Experimental
    MAA868 dose 1

    MAA868 dose 1, single administration, subcutaneous

    Drug: MAA868

  • Experimental
    MAA868 dose 2

    MAA868 dose 2, single administration, subcutaneous

    Drug: MAA868

  • Active comparator
    Enoxaparin

    Enoxaparin 40mg, once daily (o.d.) for 10 days

    Drug: Enoxaparin

Interventions

  • DrugMAA868

    MAA868 dose 1 and dose 2, single administration, subcutaneous,

  • Enoxaparin 40 mg, o.d X 10 days

06

What researchers measure

Primary outcomes

  1. Number of patients with confirmed composite endpoint

    Occurrence of confirmed composite endpoint of asymptomatic deep vein thrombosis (DVT), confirmed symptomatic venous thromboembolic events (VTE), fatal pulmonary embolism (PE) or unexplained death

    Time frame: Day 14

Secondary outcomes

  1. Number of patients with composite bleeding

    Occurrence of confirmed composite endpoint of major bleeding and clinically relevant non-major (CRNM) bleeding events

    Time frame: Day 1 to Day 50

  2. Number of patients with composite venous thromboembolic events (VTE)

    Occurrence of confirmed composite endpoint of asymptomatic deep vein thrombosis (DVT), Confirmed symptomatic venous thromboembolic events (VTE), fatal pulmonary embolism (PE) or unexplained death

    Time frame: Day 1 to Day 110

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: Undecided — Novartis is committed to sharing with qualified external researchers, access to patient-level data and supporting clinical documents from eligible studies. These requests are reviewed and approved by an independent review panel on the basis of scientific merit. All data provided is anonymized to respect the privacy of patients who have participated in the trial in line with applicable laws and regulations. This trial data availability is according to the criteria and process described on www.clinicalstudydatarequest.com

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 8, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03393481
Responsible party
Sponsor
First posted
Jan 8, 2018
Start date
Oct 3, 2018 (estimated)
Primary completion
Jan 8, 2020 (estimated)
Completion
Apr 17, 2020 (estimated)
Last update
Oct 8, 2020

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 withdrawn, as verified in Oct 2020. You cannot join it, but the record below documents what was studied.

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