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ALIFE2 study : low-molecular-weight heparin for women with recurrent miscarriage and inherited thrombophilia : study protocol for a randomized controlled trial

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Jong, Paulien G. de, Quenby, Siobhan, Bloemenkamp, Kitty W. M., Braams-Lisman, Babette A. M., Bruin, Jan Peter de, Coomarasamy, Arri, David, Michele, DeSancho, Maria T., van der Heijden, Olivier W. H., Hoek, Annemieke et al.
(2015) ALIFE2 study : low-molecular-weight heparin for women with recurrent miscarriage and inherited thrombophilia : study protocol for a randomized controlled trial. Trials, Volume 16 (Number 1). Article number 208. doi:10.1186/s13063-015-0719-9

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Official URL: http://dx.doi.org/10.1186/s13063-015-0719-9

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Abstract

Background A large number of studies have shown an association between inherited thrombophilia and recurrent miscarriage. It has been hypothesized that anticoagulant therapy might reduce the number of miscarriages and stillbirth in these women. In the absence of randomized controlled trials evaluating the efficacy of anticoagulant therapy in women with inherited thrombophilia and recurrent miscarriage, a randomized trial with adequate power that addresses this question is needed. The objective of the ALIFE2 study is therefore to evaluate the efficacy of low-molecular-weight heparin (LMWH) in women with inherited thrombophilia and recurrent miscarriage, with live birth as the primary outcome. Methods/Design Randomized study of LMWH plus standard pregnancy surveillance versus standard pregnancy surveillance alone. Study population: pregnant women of less than 7 weeks’ gestation, and confirmed inherited thrombophilia with a history of 2 or more miscarriages or intra-uterine fetal deaths, or both. Setting: multi-center study in centers from the Dutch Consortium of Fertility studies; centers outside the Netherlands are currently preparing to participate. Intervention: LMWH enoxaparin 40 mg subcutaneously once daily started prior to 7 weeks gestational age plus standard pregnancy surveillance or standard pregnancy surveillance alone. Main study parameters/endpoints: the primary efficacy outcome is live birth. Secondary efficacy outcomes include adverse pregnancy outcomes, such as miscarriage, pre-eclampsia, syndrome of hemolysis, elevated liver enzymes and low platelets (HELLP syndrome), fetal growth restriction, placental abruption, premature delivery and congenital malformations. Safety outcomes include bleeding episodes, thrombocytopenia and skin reactions. Discussion After an initial period of slow recruitment, the recruitment rate for the study has increased. Improved awareness of the study and acknowledgement of the need for evidence are thought to be contributing to the improved recruitment rates. We aim to increase the number of recruiting centers in order to increase enrollment into the ALIFE2 study. The study website can be accessed via www.ALIFE2study.org. Trial registration The ALIFE2 study was registered on 19 March 2012 under registration number NTR3361

Item Type: Journal Article
Subjects: R Medicine > RG Gynecology and obstetrics
Divisions: Faculty of Medicine > Warwick Medical School > Biomedical Sciences > Translational & Experimental Medicine > Reproductive Health ( - until July 2016)
Faculty of Medicine > Warwick Medical School
Library of Congress Subject Headings (LCSH): Thrombosis—Complications, Pregnancy--Complications, Miscarriage, Heparin , Blood coagulation disorders in pregnancy
Journal or Publication Title: Trials
Publisher: Biomed Central
ISSN: 1745-6215
Official Date: 7 May 2015
Dates:
DateEvent
7 May 2015Published
13 April 2015Accepted
27 November 2014Submitted
Date of first compliant deposit: 29 December 2015
Volume: Volume 16
Number: Number 1
Article Number: Article number 208
DOI: 10.1186/s13063-015-0719-9
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
Funder: Netherlands Organization for Health Research and Development , National Institute for Health Research (Great Britain) (NIHR)
Grant number: ZonMw, 016.126.364

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