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The Effect of Low Dose Aspirin in Increasing the Chance of Pregnancy

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. Read our disclaimer for details. Identifier: NCT01633528
Recruitment Status : Completed
First Posted : July 4, 2012
Last Update Posted : January 18, 2017
Information provided by (Responsible Party):
Royan Institute

Brief Summary:
It has been reported that low-dose aspirin and Heparin would lead to an increased Pregnancy rate in patients undergoing IVF-ET. Low-dose aspirin may improve uterine and ovarian perfusion and that aspirin might enhance endometrial receptivity and ovarian responsiveness as well, which could result in better implantation and pregnancy rates after IVF or ICSI treatment. This study assesses potential effects of low-dose aspirin (100 mg daily) on pregnancy rate following frozen embryo transfer.

Condition or disease Intervention/treatment Phase
Infertility Drug: Asprin Drug: placebo Phase 3

Detailed Description:

In the present randomized double-blind prospective study, the patients will be randomly assigned to the study and control groups. With the onset of endometrial preparation and estrogen treatment, the study group will receive 100 mg of oral aspirin and the control group will be given placebo. When endometrial thickness will be found between 8-14 mm, therapy with progesterone (100 mg IM daily) will be started and embryo transfer will be performed 48 to 72 hours later. Doppler ultrasonography also is done to calculate Resistive Index (RI) and Pulsatility Index (PI), the day after progesterone administration.

βHCG will be assessed 14 days after ET. If a pregnancy will be achieved, the patients in study and control groups will be instructed to continue the aspirin or placebo through 5 weeks and if the pregnancy test result will be negative, the treatment with aspirin or placebo will be stopped. The patients will be followed until 20 weeks of gestation and the results of treatment cycle will be compared in two groups.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 60 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: To Evaluate the Effect of Low Dose Aspirin in Increasing the Chance of Pregnancy in Frozen Embryo Transfer Cycles
Study Start Date : May 2012
Actual Primary Completion Date : September 2012
Actual Study Completion Date : February 2015

Resource links provided by the National Library of Medicine

Drug Information available for: Aspirin

Arm Intervention/treatment
Experimental: Asprin
With the onset of endometrial preparation and estrogen treatment, the study group will receive 100 mg of oral aspirin.
Drug: Asprin
100 mg

Placebo Comparator: placebo
With the onset of endometrial preparation and estrogen treatment, the control group will receive placebo
Drug: placebo

Primary Outcome Measures :
  1. Pregnancy rate [ Time Frame: 6 weeks ]
    evaluation the clinical pregnancy rate 6 weeks after emberyo transfering.

Secondary Outcome Measures :
  1. Implantation rate [ Time Frame: 8 weeks ]
    Evaluation the implantation rate after emberyo transfer in women who use low dose of aspirin

  2. Miscarriage rate [ Time Frame: 12 weeks ]
    Evaluation the miscariage rate after emberyo transfer in women who use asprin.

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 40 Years   (Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients with "long or antagonist" protocol
  • Women who did not achieve a pregnancy following a fresh embryo transfer or women whom their embryos had not been transferred due to OHSS
  • The women who had frozen embryos available for another transfer no contraindications for aspirin

Exclusion Criteria:

  • The patients with history of recurrent abortion

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 identifier (NCT number): NCT01633528

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Iran, Islamic Republic of
Royan Institute
Tehran, Iran, Islamic Republic of
Sponsors and Collaborators
Royan Institute
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Study Chair: Hamid Gourabi, PhD Head of Royan institute
Study Director: Tahereh Madani, MD Endocrinology and Female Infertility Department
Principal Investigator: Firoozeh Ahmadi, MD Reproductive Imaging Department
Principal Investigator: Poopak Eftekhary, PhD Embryology Department

Additional Information:
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Responsible Party: Royan Institute Identifier: NCT01633528    
Other Study ID Numbers: Royan-Emb-014
First Posted: July 4, 2012    Key Record Dates
Last Update Posted: January 18, 2017
Last Verified: March 2012
Keywords provided by Royan Institute:
low dose aspirin endometrial thickness pregnancy rate ICSI IVF embryo transfer
Additional relevant MeSH terms:
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Genital Diseases, Male
Genital Diseases, Female
Anti-Inflammatory Agents, Non-Steroidal
Analgesics, Non-Narcotic
Sensory System Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs
Anti-Inflammatory Agents
Antirheumatic Agents
Fibrinolytic Agents
Fibrin Modulating Agents
Molecular Mechanisms of Pharmacological Action
Platelet Aggregation Inhibitors
Cyclooxygenase Inhibitors
Enzyme Inhibitors