ClinicalTrials.gg
WithdrawnNCT03398434Updated Oct 8, 2020

Efficacy and Safety of MAA868 in Patients With Atrial Fibrillation

A Phase 2 interventional study of MAA868 and Apixaban in Atrial Fibrillation, sponsored by Novartis Pharmaceuticals. Withdrawn. Open to participants aged 55 Years to 85 Years. Per ClinicalTrials.gov, last updated 2020-10-08.

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

Why this study was withdrawn
Trial cancelled before First Patient First Visit (no patient enrolled)
Phase
Phase 2
Study type
Interventional
Enrollment
0
Allocation
Randomized
Ages
55 Years to 85 Years
Sex
All
01

Study summary

The purpose of this study is to evaluate the pharmacokinetics, pharmacodynamics, safety and tolerability of MAA868 compared to apixaban in patients with atrial fibrillation.

02

Conditions studied

  • Atrial Fibrillation

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Keywords

  • MAA868
  • apixaban
  • atrial fibrillation
  • anticoagulant
  • Factor XI
  • D-dimer
  • systemic thromboembolic events
03

In context

Atrial Fibrillation

4,009 studies on the registry are indexed under Atrial Fibrillation; 961 are open to participants now.

Browse Atrial Fibrillation 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
55 Years to 85 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

  • Male and female patients ≥ 55 and \< 85 years old
  • Body weight between 50 and 130 kg inclusive
  • Atrial fibrillation or atrial flutter, as documented by electrocardiography
  • CHA2DS2-VASc risk score ≥ 2 for male and female patients. Male patients with CHA2DS2VASc risk score of 1 can be included if anticoagulation therapy is warranted.
  • Either anticoagulant-naïve or receiving a stable treatment of a recommended dose of a new oral anticoagulant (NOAC) over the 8 weeks prior to screening.

Exclusion criteria

Exclusion Criteria:

  • History of stroke, or systemic embolism
  • History of major bleeding during treatment with an anticoagulant or antiplatelet therapy in the last 12 months
  • History of traumatic or non-traumatic intracranial, intraspinal or intra-ocular bleeding
  • Known bleeding diathesis or any known active bleeding site at screening or baseline
  • Family history of bleeding disorder
  • Known active GI lesions predisposing to bleeding events
  • Myocardial infarction, unstable angina pectoris or coronary artery bypass graft (CABG) surgery within 12 months prior to the screening period
  • Known hemodynamically significant valvular heart disease
  • Uncontrolled hypertension defined as SBP/DBP ≥ 160/100 mmHg at the screening visit
  • Heart failure class IV in the 3 months prior to the screening visit
  • Dual antiplatelet therapy. Treatment with a P2Y12 inhibitor or low dose aspirin (≤ 100 mg/d) is allowed but not both.
  • Severe renal impairment ( \< 30 mL/min) at the screening visit
Terms in these criteria, in plain language(3)

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.

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.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

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.

05

Study design

Phase
Phase 2
Primary purpose
Basic science
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
0 participants (actual)

Study arms

  • Experimental
    MAA868 low dose regimen

    patients receive dose monthly.

    Drug: MAA868

  • Experimental
    MAA868 middle dose regimen

    patients receive dose monthly.

    Drug: MAA868

  • Experimental
    MAA868 high dose regimen

    patients receive dose monthly.

    Drug: MAA868

  • Active comparator
    Apixaban

    Apixaban 5 mg b.i.d

    Drug: Apixaban

Interventions

  • DrugMAA868

    3 MAA868 doses, single administration, subcutaneous,

  • Apixaban 5 mg b.i.d

06

What researchers measure

Primary outcomes

  1. number of patients achieving FXI inhibition ≥ 80% at trough after monthly dosing at 3 dose levels of MAA868 inhibition

    Occurrence of achieving ≥ 80% inhibition of FXI (\< 20% free FXI) following 3 months of treatment.

    Time frame: month 3

Secondary outcomes

  1. number of patients achieving FXI inhibition ≥ 80% at trough after the first and second dose at 3 dose levels of MAA868

    Occurrence of achieving ≥ 80% inhibition of FXI (\< 20% free FXI) at trough on Month 1 and Month 2

    Time frame: Month 1 and 2

  2. Number of patients with incidence of major or clinically relevant non-major (CRNM) bleeding events during the treatment period.

    Incidence of major or clinically relevant non-major bleeding events

    Time frame: day 1 to day 91

  3. the effect of MAA868 on D dimer and other thrombogenesis biomarkers as indicators of efficacy compared to compotator

    Change from baseline to Day 31, Day 61 and Day 91 in thrombogenesis biomarkers (D-dimer, prothrombin fragment 1.2 (F1.2), thrombin-antithrombin III-complexes (TAT), fibrinogen).

    Time frame: Days 31, 61 and 91

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: Yes — 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

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Start is estimated for Oct 2018; primary completion for Nov 2019, 13 months later.

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

Registered
Jan 8, 2018
First posted
Jan 12, 2018
StartEst.
Oct 16, 2018
Primary completionEst.
Nov 28, 2019
CompletionEst.
Jan 30, 2020
Last update
Oct 8, 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 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
NCT03398434
Responsible party
Sponsor
First posted
Jan 12, 2018
Start date
Oct 16, 2018 (estimated)
Primary completion
Nov 28, 2019 (estimated)
Completion
Jan 30, 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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