Antithrombin III DeficiencyPhase 4NCT02278575
Atenativ Effect on Uterine Blood Flow and Preeclampsia
A Phase 4 study testing Atenativ in people with Antithrombin III Deficiency, run by Vastra Gotaland Region at 1 site in Sweden.
Trial summary
The study will be an open controlled pilot study of 6 patients with early-onset severe preeclampsia. Patients will receive Atenativ in addition to conventional therapy The patients will be followed up within the study until three days after delivery. Read more about this study
- Who is it for?
- Ages 18 years and older, women only
- Conditions the study is for
- Antithrombin III Deficiency
- What is being tested?
- Atenativ
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 0 participants
- Where
- 1 siteSweden
- Study dates
- Jan 2016to May 2017
- Phase
- Phase 4
- Are there results?
- None posted in the registry
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
- Pregnant woman in gestational week 23+0 - 29+0
- Severe preeclampsia as defined by international criteria (1,2)
- Blood pressure >160/110 mmHg (measured twice 30 minutes apart). proteinuria (>5 .0 g/L per 24 hours or >3 + labstick in at least two random samples six hours apart) after 20th gestational week.
- Blood pressure >140/90 mmHg and proteinuria >5.0 g/24 h.
- preeclampsia ( blood pressure > 140/90 and proteinuria >0.3 g/24 h) with IUGR or subjective symptoms as epigastic pain (HELLP), headache, dizziness or visual disturbancies, oligouri < 600 ml/24 h, coagulation disturbancies.
- AT level <0.8 kIE/L
Show all 9Show fewer
- -
- Exclusion Criteria:1. History of congenital AT deficiency 2. Severe preeclampsia with demand on acute delivery within 24 hours according to the investigators judgments 3. Concomitant administration of anticoagulants and platelet inhibitors within 2 weeks 4. Chronic renal disease 5. Diabetes melittus or gestational diabetes 6. Intrauterine fetal death 7. Participation in another clinical study 8. Multiple pregnancies
- -
Who cannot join
None listed.
Trial locations and contacts
1 site in 1 country.
Sweden1 site
Dept Obstetrics, Sahlgrenska University Hospital
Gothenburg, 41685
About this study
Official title: Clinical Effect of Atenativ Treatment on Uterine Blood Flow and the Amount of Atenativ Needed to Maintain a Normal Antithrombin Lvels During Two Weeks in Early and Severe Preeclampsia
The study will be an open controlled pilot study of 6 patients with early-onset severe preeclampsia. Patients will receive Atenativ in addition to conventional therapy The patients will be followed up within the study until three days after delivery. Laboratory analyses and uterine and umbiliacal blood flow will be determined.
Read the detailed description
The study will be an open controlled pilot study of 6 patients with early-onset severe preeclampsia. Patients will receive Atenativ in addition to conventional therapy The patients will be followed up within the study until three days after delivery. In addition to conventional therapy, i.v. administration of Atenativ will be given in a dosage aimed to raise the plasma level of AT initially to 120% (1.2 kIU/L) The goal is to achieve and maintain plasma activity of about 100% during two weeks. The dose of Atenativ is based on the actual plasma level of AT measured 2 hours before the dose. During the first two days of treatment plasma samples will be drawn for the measurement of AT activity twice a day, once before and 12 hours after infusion in order to monitor the dosage. Thereafter and until study discontinuation AT will be measured once a day. The treatment will continue for two weeks if plasma AT III is below 100% (1.0 kIU/L).Uterine blood flow is measured before, during and after the AT infusion. Demographic data, medical history and other background data (age, weight, height, gestational week, smoker or not, gravidity, parity, previous hypertension, previous medication etc) will be recorded in order to ensure that the inclusion criteria are met and to verify patient identity and inclusion status. The week of gestation when the patient is included in the study as well as the week of gestation at delivery is recorded.
The type of delivery (vaginal or caesarean section as well as planned or acute) will also be recorded.. General haemostatic parameters are to be analyzed before start of treatment and then every day during treatment and thereafter at least twice a week. Special haemostatic parameters are Placental growth factor, S-Flt-1, VEGF and Syndecan-1. They will be sampled before start of treatment and during treatment once a week. The samples will be collected and frozen and not analyzed before the termination of the study.
- Conditions
- Antithrombin III Deficiency
- Being tested
- Atenativ
- Keywords
- antithrombin, Atenativ, preeclampsia, blood flow.
- Medical subject headings
- Antithrombin III Deficiency, Pre-Eclampsia
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
AtenativDrug
Also called antithrombin concentrate
intravenous transfusion
| Study group | Role | What they receive |
|---|---|---|
| Consisting of treatment with Atenativ | Other | During two weeks antithrombin concentrate(Atenativ) will be administered in order to maintain normal levels of antithrombin Receives: Drug: Atenativ |
What is being measured
The primary outcome is the main question the study is designed to answer.
Blood flow in uterin and umbilical artery
Measured: up to day 14
Secondary outcomes (2)
fetal outcome
CTG, blood flow, Apgar score, birthweight
Measured: at birth
bleeding complications
measurements of bleeding before and after placenta delivery
Measured: during pregnancy and at delivery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted30 Oct 2014 (estimated)
- Study startJan 2016
- Primary completionMay 2017
- Study completionMay 2017
Why it stopped: impossible to recruit participants due to organization changes
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (9)Papers the sponsor has linked to this study.
- Other trials for Antithrombin III DeficiencyStudies of the same condition, open and under way.
- More trials run by Vastra Gotaland RegionThe 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
- Phase 4
- Primary purpose
- Supportive care
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 0 participants (actual)
Sponsor and investigators
- Lead sponsor
- Vastra Gotaland Region
- Sponsor type
- Other government
- Collaborators
- Octapharma
- Responsible party
- Principal investigator, Margareta Hellgren, Vastra Gotaland Region
- Investigators
- Margareta Hellgren, MD,PhD,prof, Principal investigator, department Obstetrics, Sahlgrenska University Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02278575
- Sponsor's protocol ID
- EudraCT 2012-005770-57
- Status last verified
- Sep 2017
- First submitted
- 28 Oct 2014
- Last updated
- 26 Sep 2017
- Results posted
- No
- Data monitoring committee
- Yes
- Individual data sharing
- Yes: extern monitoring by Gothia Forum
Publications
Heilmann L, Rath W, Pollow K. Hemostatic abnormalities in patients with severe preeclampsia. Clin Appl Thromb Hemost. 2007 Jul;13(3):285-91. doi: 10.1177/1076029607299986.
PubMed 17636190Weenink GH, Treffers PE, Vijn P, Smorenberg-Schoorl ME, ten Cate JW. Plasma antithrombin III levels in pre-eclampsia. Clin Exp Hypertens B. 1983;2(1):145-62. doi: 10.3109/10641958309023467.
PubMed 6872275Aghai E, Brunstein J, Quitt M, Abramovici H, Froom P. Antithrombin III levels in preeclampsia. Isr J Med Sci. 1990 Mar;26(3):142-3.
PubMed 2329037Hellgren M, Hagnevik K, Robbe H, Bjork O, Blomback M, Eklund J. Severe acquired antithrombin III deficiency in relation to hepatic and renal insufficiency and intrauterine fetal death in late pregnancy. Gynecol Obstet Invest. 1983;16(2):107-18. doi: 10.1159/000299230.
PubMed 6618278Hellgren M, Javelin L, Hagnevik K, Blomback M. Antithrombin III concentrate as adjuvant in DIC treatment. A pilot study in 9 severely ill patients. Thromb Res. 1984 Aug 15;35(4):459-66. doi: 10.1016/0049-3848(84)90237-8. No abstract available.
PubMed 6484893Maki M, Kobayashi T, Terao T, Ikenoue T, Satoh K, Nakabayashi M, Sagara Y, Kajiwara Y, Urata M. Antithrombin therapy for severe preeclampsia: results of a double-blind, randomized, placebo-controlled trial. BI51.017 Study Group. Thromb Haemost. 2000 Oct;84(4):583-90.
PubMed 11057854Kobayashi T, Terao T, Ikenoue T, Sameshima H, Nakabayashi M, Kajiwara Y, Maki M; BI 51 017 Study Group. Treatment of severe preeclampsia with antithrombin concentrate: results of a prospective feasibility study. Semin Thromb Hemost. 2003 Dec;29(6):645-52. doi: 10.1055/s-2004-815632.
PubMed 14719181Paternoster DM, Fantinato S, Manganelli F, Nicolini U, Milani M, Girolami A. Recent progress in the therapeutic management of pre-eclampsia. Expert Opin Pharmacother. 2004 Nov;5(11):2233-9. doi: 10.1517/14656566.5.11.2233.
PubMed 15500369Sameshima H, Kodama Y, Ikenoue T, Kajiwara Y. Antithrombin improves fetal condition in women with severe pre-eclampsia before 32 weeks of gestation; a randomized, double-blind, placebo-controlled trial. J Obstet Gynaecol Res. 2008 Feb;34(1):34-9. doi: 10.1111/j.1447-0756.2007.00677.x.
PubMed 18226126
Study at a glance
From the registry record, last updated by the sponsor on 26 Sep 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Clinical Effect of Atenativ Treatment on Uterine Blood Flow and the Amount of Atenativ Needed to Maintain a Normal Antithrombin Lvels During Two Weeks in Early and Severe Preeclampsia
- ClinicalTrials.gov ID
- NCT02278575
- Acronym / sponsor ID
- EudraCT 2012-005770-57
- Conditions
- Antithrombin III Deficiency
- Keywords
- antithrombin, Atenativ, preeclampsia, blood flow.
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- WithdrawnReason stopped: impossible to recruit participants due to organization changes
- Enrolment
- 0 participants (actual)
- Lead sponsor
- Vastra Gotaland RegionOther government
- Collaborators
- Octapharma
- Study start
- Jan 2016
- Primary completion
- May 2017 (actual)
- Study completion
- May 2017 (actual)
- First posted
- 30 Oct 2014 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The study will be an open controlled pilot study of 6 patients with early-onset severe preeclampsia. Patients will receive Atenativ in addition to conventional therapy The patients will be followed up within the study until three days after delivery. Laboratory analyses and uterine and umbiliacal blood flow will be determined.
Detailed description
The study will be an open controlled pilot study of 6 patients with early-onset severe preeclampsia. Patients will receive Atenativ in addition to conventional therapy The patients will be followed up within the study until three days after delivery. In addition to conventional therapy, i.v. administration of Atenativ will be given in a dosage aimed to raise the plasma level of AT initially to 120% (1.2 kIU/L) The goal is to achieve and maintain plasma activity of about 100% during two weeks. The dose of Atenativ is based on the actual plasma level of AT measured 2 hours before the dose. During the first two days of treatment plasma samples will be drawn for the measurement of AT activity twice a day, once before and 12 hours after infusion in order to monitor the dosage. Thereafter and until study discontinuation AT will be measured once a day. The treatment will continue for two weeks if plasma AT III is below 100% (1.0 kIU/L).Uterine blood flow is measured before, during and after the AT infusion. Demographic data, medical history and other background data (age, weight, height, gestational week, smoker or not, gravidity, parity, previous hypertension, previous medication etc) will be recorded in order to ensure that the inclusion criteria are met and to verify patient identity and inclusion status. The week of gestation when the patient is included in the study as well as the week of gestation at delivery is recorded.
The type of delivery (vaginal or caesarean section as well as planned or acute) will also be recorded.. General haemostatic parameters are to be analyzed before start of treatment and then every day during treatment and thereafter at least twice a week. Special haemostatic parameters are Placental growth factor, S-Flt-1, VEGF and Syndecan-1. They will be sampled before start of treatment and during treatment once a week. The samples will be collected and frozen and not analyzed before the termination of the study.
Study design
- Primary purpose
- Supportive care
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Consisting of treatment with Atenativ | Other | Drug: AtenativDuring two weeks antithrombin concentrate(Atenativ) will be administered in order to maintain normal levels of antithrombin |
Who may qualify
- Ages
- 18 years and older
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (9 listed)
- Pregnant woman in gestational week 23+0 - 29+0
- Severe preeclampsia as defined by international criteria (1,2)
- AT level <0.8 kIE/L
- -
- Exclusion Criteria:1. History of congenital AT deficiency 2. Severe preeclampsia with demand on acute delivery within 24 hours according to the investigators judgments 3. Concomitant administration of anticoagulants and platelet inhibitors within 2 weeks 4. Chronic renal disease 5. Diabetes melittus or gestational diabetes 6. Intrauterine fetal death 7. Participation in another clinical study 8. Multiple pregnancies
Key exclusion criteria (0 listed)
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 |
|---|---|---|
| AtenativAlso: antithrombin concentrateintravenous transfusion | Drug | Consisting of treatment with Atenativ |
Primary outcome
Blood flow in uterin and umbilical artery
Time frame: up to day 14
2 secondary outcomes
fetal outcome
Time frame: at birth
bleeding complications
Time frame: during pregnancy and at delivery
Results and safety
The study was withdrawn before enrolling participants, so there are no results.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 26 Sep 2017.
- Results publication: PubMed 17636190Heilmann L, Rath W, Pollow K. Hemostatic abnormalities in patients with severe preeclampsia. Clin Appl Thromb Hemost. 2007 Jul;13(3):285-91. doi: 10.1177/1076029607299986.
- Results publication: PubMed 6872275Weenink GH, Treffers PE, Vijn P, Smorenberg-Schoorl ME, ten Cate JW. Plasma antithrombin III levels in pre-eclampsia. Clin Exp Hypertens B. 1983;2(1):145-62. doi: 10.3109/10641958309023467.
- Results publication: PubMed 2329037Aghai E, Brunstein J, Quitt M, Abramovici H, Froom P. Antithrombin III levels in preeclampsia. Isr J Med Sci. 1990 Mar;26(3):142-3.
- Results publication: PubMed 6618278Hellgren M, Hagnevik K, Robbe H, Bjork O, Blomback M, Eklund J. Severe acquired antithrombin III deficiency in relation to hepatic and renal insufficiency and intrauterine fetal death in late pregnancy. Gynecol Obstet Invest. 1983;16(2):107-18. doi: 10.1159/000299230.
- Results publication: PubMed 6484893Hellgren M, Javelin L, Hagnevik K, Blomback M. Antithrombin III concentrate as adjuvant in DIC treatment. A pilot study in 9 severely ill patients. Thromb Res. 1984 Aug 15;35(4):459-66. doi: 10.1016/0049-3848(84)90237-8. No abstract available.
- Results publication: PubMed 11057854Maki M, Kobayashi T, Terao T, Ikenoue T, Satoh K, Nakabayashi M, Sagara Y, Kajiwara Y, Urata M. Antithrombin therapy for severe preeclampsia: results of a double-blind, randomized, placebo-controlled trial. BI51.017 Study Group. Thromb Haemost. 2000 Oct;84(4):583-90.
- Results publication: PubMed 14719181Kobayashi T, Terao T, Ikenoue T, Sameshima H, Nakabayashi M, Kajiwara Y, Maki M; BI 51 017 Study Group. Treatment of severe preeclampsia with antithrombin concentrate: results of a prospective feasibility study. Semin Thromb Hemost. 2003 Dec;29(6):645-52. doi: 10.1055/s-2004-815632.
- Results publication: PubMed 15500369Paternoster DM, Fantinato S, Manganelli F, Nicolini U, Milani M, Girolami A. Recent progress in the therapeutic management of pre-eclampsia. Expert Opin Pharmacother. 2004 Nov;5(11):2233-9. doi: 10.1517/14656566.5.11.2233.
- Results publication: PubMed 18226126Sameshima H, Kodama Y, Ikenoue T, Kajiwara Y. Antithrombin improves fetal condition in women with severe pre-eclampsia before 32 weeks of gestation; a randomized, double-blind, placebo-controlled trial. J Obstet Gynaecol Res. 2008 Feb;34(1):34-9. doi: 10.1111/j.1447-0756.2007.00677.x.
- Individual participant dataSharing planned: Yes. extern monitoring by Gothia Forum
Related trials for Antithrombin III Deficiency
RecruitingPhase 3
Efficacy of Atenativ in Patients With Congenital Antithrombin Deficiency Undergoing Surgery or Delivery
Congenital Antithrombin Deficiency
RecruitingPhase 3
Phase 3 Study on the Efficacy and Safety of Human Plasma Derived Antithrombin (Atenativ) in Heparin-Resistant Patients Scheduled to Undergo Cardiac Surgery Necessitating Cardiopulmonary Bypass
Acquired Antithrombin Deficiency
Not yet recruitingObservational study
Belgian Antithrombin Deficiency Registry
Antithrombin III Deficiency
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.
Margareta Hellgren, MD,PhD,prof principal investigator
department Obstetrics, Sahlgrenska University Hospital
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing Atenativ in people with Antithrombin III Deficiency, run by Vastra Gotaland Region at 1 site in Sweden.
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 9 inclusion and 0 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: withdrawn, as of the sponsor's last update on 26 Sep 2017. 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 Sweden. 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?
Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study was withdrawn before enrolling participants, so there are no results.
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?
Blood flow in uterin and umbilical artery (time frame: up to day 14). 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 NCT02278575, which also lists 9 linked publications.
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 26 Sep 2017.