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The Role of Prothrombin Gene and Methylenetetrahydrofolate Reductase(MTHFR) Gene Polymorphisms as Risk Factors for Recurrent Miscarriage

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT03209063
Recruitment Status : Not yet recruiting
First Posted : July 6, 2017
Last Update Posted : December 19, 2019
Sponsor:
Information provided by (Responsible Party):
Ghada Mahran, Assiut University

Brief Summary:
Recurrent miscarriage is a pregnancy loss before 20 weeks of gestation. The recurrent pregnancy loss(RPL) usually occurring in the first trimester of gestation and its rate is quite high (15-20% even in full reproductive period) . In 2012, the American Society for Reproductive Medicine Practice Committee issued a statement that defined recurrent pregnancy loss as a disease distinct from infertility defined by two or more failed consecutive pregnancies.approximately 40% of couples will have an etiology identified that could be associated with their loss.

Condition or disease Intervention/treatment
Recurrent Miscarriage Diagnostic Test: polymerase chain reaction

Detailed Description:
Recurrent miscarriage is a pregnancy loss before 20 weeks of gestation. The recurrent pregnancy loss usually occurring in the first trimester of gestation and its rate is quite high (15-20% even in full reproductive period) . In 2012, the American Society for Reproductive Medicine Practice Committee issued a statement that defined recurrent pregnancy loss as a disease distinct from infertility defined by two or more failed consecutive pregnancies.approximately 40% of couples will have an etiology identified that could be associated with their loss.Thrombophilia is the tendency to develop thromboses due to inherited defects in the coagulation system.Thrombophilia was identified as a major cause of RPL,Because pregnancy is a hypercoagulable state, thromboembolism is the leading cause of antepartum and postpartum maternal mortality .The four most common genetic markers for thrombophilia are; prothrombin gene mutation(FII, G20210A), methylene tetra hydrofolate reductase mutations (MTHFR ,C677T and A1298C), factor V Leiden (FVL, G1691A) , and plasminogen activator inhibitor 1 (PAI-1) . Prothrombin G20210A refers to a human gene mutation that increases the risk of blood clots . Approximately 1 in 50 people in the white population in the United States and Europe has prothrombin thrombophilia. Study was conducted to evaluate the frequency of PT20210 among healthy Egyptians, (1.06%) had PT20210 G-A mutation.The variant causes elevated plasma prothrombin levels (hyperprothrombinemia), Prothrombin is the precursor to thrombin, which plays a key role in causing blood to clot (blood coagulation).Prothrombin G20210A can thus contribute to a state of hypercoagulability . Methylene tetra hydrofolate reductase (MTHFR) is the rate-limiting enzyme in the methyl cycle, and it is encoded by the Methylene tetra hydrofolate reductase gene. It was thought that deficient Methylene tetra hydrofolate reductase, by causing elevated homocysteine levels, led to an increased risk of venous thrombosis, coronary heart disease, and recurrent pregnancy loss . Previous studies suggested that percentage of PT20210 in patients with unexplained RPL is ( 10.9%),however searching literatures didn't find any estimation of this percentage in Egyptian population.

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Study Type : Observational
Estimated Enrollment : 180 participants
Observational Model: Case-Control
Time Perspective: Prospective
Official Title: The Role of Prothrombin Gene and Methylenetetrahydrofolate Reductase(MTHFR) Gene Polymorphisms as Risk Factors for Recurrent Miscarriage
Estimated Study Start Date : December 20, 2019
Estimated Primary Completion Date : August 1, 2020
Estimated Study Completion Date : December 30, 2020

Resource links provided by the National Library of Medicine

Drug Information available for: Prothrombin

Group/Cohort Intervention/treatment
Group 1
90 healthy controls less than 35 years with no history of miscarriage and at least one uncomplicated full-term pregnancy.
Diagnostic Test: polymerase chain reaction
diagnostic test as Polymerase chain reaction for detection of Prothrombin gene and methylenetetrahydrofolate reductase gene polymorphisms
Other Name: homocysteine assay

Group 2
90 Patients having history of two or more miscarriages.
Diagnostic Test: polymerase chain reaction
diagnostic test as Polymerase chain reaction for detection of Prothrombin gene and methylenetetrahydrofolate reductase gene polymorphisms
Other Name: homocysteine assay




Primary Outcome Measures :
  1. The study will compare the percentage of prothrombin gene and MTHFR gene polymorphisms in cases with recurrent miscarriage and healthy control group. [ Time Frame: 2 days ]
    using polymerase chain reaction Polymerase chain reaction



Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 35 Years   (Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
The study will be conducted at Clinical Pathology Department,Women's Health Hospital ,Assiut University Hospital, Faculty of Medicine, Assiut University
Criteria

Inclusion Criteria

  1. Age less than 35 years.
  2. History of two or more spontaneous miscarriages

Exclusion Criteria:

  1. Age more than 35 years.
  2. . Women with elevated level of TSH above (2.5 mIU/ml) or prolactin above( 19.5 ng/mL)and uncontrolled DM.
  3. Women with autoimmune disorder (antiphospholipid antibody syndrome)with LA1/LA2 ratio more than( 1.2).
  4. Women receiving oral contraceptive pills.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03209063


Contacts
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Contact: Hanan G Abdelazim, prof.doctor 01227370520 hanangalal2000@yahoo.com

Sponsors and Collaborators
Assiut University
Investigators
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Principal Investigator: Ghada M Mahran, MD Assiut University, Faculty of medicine
Publications:
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Responsible Party: Ghada Mahran, principal investigator, Assiut University
ClinicalTrials.gov Identifier: NCT03209063    
Other Study ID Numbers: TROPGP
First Posted: July 6, 2017    Key Record Dates
Last Update Posted: December 19, 2019
Last Verified: December 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Additional relevant MeSH terms:
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Abortion, Spontaneous
Abortion, Habitual
Pregnancy Complications