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Antiphospholipid Syndrome in PregnancyEarly Phase 1APPLENCT03100123

AntiPhospholipid Syndrome Low-molecular-weight Heparin Pregnancy Loss Evaluation: The Pilot Study

A Early Phase 1 study testing Aspirin 81 mg and Low-molecular-weight heparin in people with Antiphospholipid Syndrome in Pregnancy and Pregnancy Loss, run by Ottawa Hospital Research Institute at 1 site in Canada.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

The APPLE pilot trial is a feasibility study that is a multicentre, open-label, randomized controlled trial. Pregnant women with antiphospholipid syndrome (APS) and a history of late (≥10 weeks gestation) or recurrent early (2 <10 weeks) pregnancy loss will be recruited. Read more about this study

Who is it for?
Ages 18 years and older, women only
What is being tested?
Aspirin 81 mg and Low-molecular-weight heparin
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
1 participants
Where
1 siteCanada
Study dates
6 Nov 2017to 7 Oct 2019
Phase
Early Phase 1
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • Women only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Confirmed pregnancy;
  • 18 years or older;
  • Two or more unexplained pregnancy loss before the 10th week of gestation, AND/OR one or more unexplained pregnancy loss at or beyond the 10th week of gestation;
  • One or more APS laboratory criteria present, according to the revised Sapporo criteria;

Who cannot join

  • Greater than 11 weeks +6 days gestational age at time of randomization;
  • Indication(s) for prophylactic or therapeutic-dose anticoagulation;
  • Contraindication to heparin or aspirin;
  • Received 7 or more doses of LMWH;
  • Previous participation in the trial;
  • Geographic inaccessibility;
  • Refused consent.

Trial locations and contacts

1 site in 1 country.

Canada1 site
  • Ottawa Hospital Research Institute

    Ottawa, Ontario

Other trials in Canada

About this study

Official title: A Pilot Study Assessing the Feasibility of a Randomized Controlled Trial Evaluating Aspirin Versus Low-molecular-weight Heparin (LMWH) and Aspirin in Women With Antiphospholipid Syndrome and Pregnancy Loss

The APPLE pilot trial is a feasibility study that is a multicentre, open-label, randomized controlled trial. Pregnant women with antiphospholipid syndrome (APS) and a history of late (≥10 weeks gestation) or recurrent early (2 <10 weeks) pregnancy loss will be recruited.

Eligible and consenting subjects will be assigned to one of two study arms: open-label low-molecular-weight heparin (LMWH) prophylaxis until 37 weeks gestation AND low-dose aspirin (ASA) daily until delivery, or open-label low-dose aspirin daily from randomization until delivery.

Read the detailed description

The purpose of this pilot trial is to determine the feasibility of conducting a multicenter randomized full trial evaluating antepartum prophylaxis with ASA versus LMWH/ASA in women with confirmed APS and a history of late or recurrent early pregnancy loss.

Given the large sample size needed to adequately power a large multicenter trial that assesses the efficacy of ASA alone versus LMWH/ASA, the investigators first need to determine if it is possible to meet minimum recruitment rates needed for a full multicenter trial. If the pilot feasibility trial is successful, then the secondary outcomes collected will be used in the analysis of the full multicenter trial.

Being tested
Aspirin 81 mg, Low-molecular-weight heparin

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Aspirin 81 mgDrug

    Also called Acetylsalicylic Acid

    Aspirin 81 mg po daily in tablet form.

  • Low-molecular-weight heparinDrug

    Also called Tinzaparin, Dalteparin, Enoxaparin, LMWH

    The LMWH regime will be at the discretion of the treating physician, with a suggested regime as follows: tinzaparin 4,500 IU sc daily until 20 weeks gestation, and then 4,500 IU sc twice daily until 37 weeks gestation.

Study groups in NCT03100123
Study groupRoleWhat they receive
Standard of Care ArmActive comparatorOpen-label low-molecular-weight heparin (LMWH) prophylaxis until 37 weeks gestation AND low-dose aspirin daily until delivery.
Receives: Drug: Low-molecular-weight heparin
Experimental ArmExperimentalOpen-label low-dose Aspirin 81 mg daily from randomization until delivery.
Receives: Drug: Aspirin 81 mg

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Study Feasibility: Mean Recruitment Rate Per Center Per Month

    The primary feasibility outcome of the pilot trial is the mean recruitment rate per center per month.

    Measured: 24 months

Secondary outcomes (6)
  1. Essential Documents

    Proportion of sites requiring >18 months to obtain all required approvals/contracts from time of delivery of all study documents.

    Measured: 18 months

  2. Eligibility

    Proportion of screened patients who meet eligibility criteria (i.e. patients who meet inclusion criteria and are also eligible based on exclusion criteria).

    Measured: 24 months

  3. Consent

    Proportion of eligible subjects who provide consent.

    Measured: 24 months

  4. Withdrawals/Loss to Follow-up

    Proportion of withdrawals/loss to follow-up among randomized patients.

    Measured: 24 months

  5. Crossover Rate

    Crossover rate between standard of care and experimental study arms.

    Measured: 52 weeks

  6. Study Drug Compliance

    Level of compliance with study drug through patient recall and patient medication diary.

    Measured: 52 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted4 Apr 2017
  2. Study start6 Nov 2017
  3. Primary completion7 Oct 2019
  4. Study completion7 Oct 2019

Why it stopped: Pilot deemed not feasible by Steering Committee due to recruitment rate.

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Early Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
Eligible and consenting subjects will be assigned to one of two study arms. Randomization is stratified by 'high-risk' or 'non-high risk' laboratory criteria and the timing of pregnancy loss (late loss or no late loss).
Masking
None (open label)
Enrolment
1 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03100123
Sponsor's protocol ID
CTO 0807
Acronym
APPLE
Status last verified
Mar 2020
First submitted
21 Feb 2017
Last updated
8 Apr 2020
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Hamulyak EN, Scheres LJ, Marijnen MC, Goddijn M, Middeldorp S. Aspirin or heparin or both for improving pregnancy outcomes in women with persistent antiphospholipid antibodies and recurrent pregnancy loss. Cochrane Database Syst Rev. 2020 May 2;5(5):CD012852. doi: 10.1002/14651858.CD012852.pub2.

    PubMed 32358837

Questions about this trial

What is this clinical trial studying?

A Early Phase 1 study testing Aspirin 81 mg and Low-molecular-weight heparin in people with Antiphospholipid Syndrome in Pregnancy and Pregnancy Loss, run by Ottawa Hospital Research Institute at 1 site in Canada.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 8 Apr 2020. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Canada. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Early Phase 1 (sometimes called Phase 0) studies give a very small amount of a treatment to a few people, mainly to see how the body handles it.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 8 Apr 2020). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Study Feasibility: Mean Recruitment Rate Per Center Per Month (time frame: 24 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03100123, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Apr 2020.

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