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.
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
- Conditions the study is for
- Antiphospholipid Syndrome in Pregnancy, Pregnancy Loss
- 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.
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 group | Role | What they receive |
|---|---|---|
| Standard of Care Arm | Active comparator | Open-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 Arm | Experimental | Open-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.
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)
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
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
Consent
Proportion of eligible subjects who provide consent.
Measured: 24 months
Withdrawals/Loss to Follow-up
Proportion of withdrawals/loss to follow-up among randomized patients.
Measured: 24 months
Crossover Rate
Crossover rate between standard of care and experimental study arms.
Measured: 52 weeks
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.
- First posted4 Apr 2017
- Study start6 Nov 2017
- Primary completion7 Oct 2019
- Study completion7 Oct 2019
Why it stopped: Pilot deemed not feasible by Steering Committee due to recruitment rate.
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Antiphospholipid Syndrome in PregnancyStudies of the same condition, open and under way.
- More trials run by Ottawa Hospital Research InstituteThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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)
Sponsor and investigators
- Lead sponsor
- Ottawa Hospital Research Institute
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Marc Rodger, MD, Principal investigator, Ottawa Hospital Research InstituteLeslie Skeith, MD, Principal investigator, Ottawa Hospital Research Institute
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
- Results posted
- Yes, on ClinicalTrials.gov
- 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
Study at a glance
From the registry record, last updated by the sponsor on 8 Apr 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- 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
- ClinicalTrials.gov ID
- NCT03100123
- Acronym / sponsor ID
- APPLE / CTO 0807
- Phase
- Early Phase 1
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: Pilot deemed not feasible by Steering Committee due to recruitment rate.
- Enrolment
- 1 participants (actual)
- Lead sponsor
- Ottawa Hospital Research InstituteUniversity, hospital or other
- Study start
- 6 Nov 2017 (actual)
- Primary completion
- 7 Oct 2019 (actual)
- Study completion
- 7 Oct 2019 (actual)
- First posted
- 4 Apr 2017 (actual)
- Results
- Posted 8 Apr 2020
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
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.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
- 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).
| Arm | Type | Receives |
|---|---|---|
| Standard of Care Arm | Active comparator | Drug: Low-molecular-weight heparinOpen-label low-molecular-weight heparin (LMWH) prophylaxis until 37 weeks gestation AND low-dose aspirin daily until delivery. |
| Experimental Arm | Experimental | Drug: Aspirin 81 mgOpen-label low-dose Aspirin 81 mg daily from randomization until delivery. |
Who may qualify
- Ages
- 18 years and older
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (4 listed)
- 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;
Key exclusion criteria (7 listed)
- 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;
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Aspirin 81 mgAlso: Acetylsalicylic AcidAspirin 81 mg po daily in tablet form. | Drug | Experimental Arm |
| Low-molecular-weight heparinAlso: Tinzaparin, Dalteparin, Enoxaparin, LMWHThe 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. | Drug | Standard of Care Arm |
Primary outcome
Study Feasibility: Mean Recruitment Rate Per Center Per Month
Time frame: 24 months
The primary feasibility outcome of the pilot trial is the mean recruitment rate per center per month.
6 secondary outcomes
Essential Documents
Time frame: 18 months
Eligibility
Time frame: 24 months
Consent
Time frame: 24 months
Withdrawals/Loss to Follow-up
Time frame: 24 months
Crossover Rate
Time frame: 52 weeks
Study Drug Compliance
Time frame: 52 weeks
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 8 Apr 2020.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 32358837Hamulyak 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.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Marc Rodger, MD principal investigator
Ottawa Hospital Research Institute
Leslie Skeith, MD principal investigator
Ottawa Hospital Research Institute
1 site in 1 country: see every site and its status.
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.