CClinicalTrials.gg
CompletedNCT03862586Updated Mar 5, 2019

NAC Effect on Hox Genes Expressions in RIF

A Phase 3 interventional study of N-acetyl cysteine and Placebos in Female Infertility, sponsored by Royan Institute. Completed. Open to female participants aged 22 Years to 40 Years. Per ClinicalTrials.gov, last updated 2019-03-05.

Sponsored by Royan Institute · Phase 3, Interventional, and Treatment

From the registry’s dates

  • Registered 3 years 10 months after the study started (first participant enrolled Feb 2015, registered Dec 2018).
Phase
Phase 3
Study type
Interventional
Enrollment
40
Allocation
Randomized
Ages
22 Years to 40 Years
Sex
Female
01

Study summary

Comparison of the group treated with NAC-supplementation and placebo- administered groups showed elevations in HOXA cluster genes (all members) expression level in endometrium of women with RIF.

Read the detailed description

Despite significant developments in assistant reproductive technology (ART) that have overcome many underlying causes of infertility, pregnancy success rates remain relatively low, mainly due to implantation failure. Embryo quality and endometrial receptivity are two significant factors that believed to be the key points in implantation. Since recent studies that showed high expression of some HOXA genes affects on successful implantation rate, thus we examined the expression of HOXA genes in NAC supplementation during window of implantation (WOI) in women with (RIF). Also the effect of NAC on the improvement of implantation in RIF patients was investigated. Forty unfertile women with a diagnosis of RIF, referred to Royan Institute were included in the study. The study was of the type a single center, double blinded, placebo controlled, randomized trial. Expression of HOXA genes were assessed on the day of WOI (using Real Time PCR) biopsies from endometrium. Subjects randomly assigned to receive either NAC (A) or placebo (B) with both effervescent tablets having similar color, size and appearance. The patients were randomly categorized in two groups (A/B) to receive NAC 1200 mg/day or placebo, for at-least 6 weeks before starting ovarian stimulation. Pipelled-based biopsy from endometrium was done on specific day (19-21) of their cycle. Then patients were undergone ovarian stimulation (using NAC) ended to IVF treatment. RNA extraction and cDNA synthesis were performed from endometrium samples and then we evaluated expressions levels by Real-time PCR. Then we analyzed our data by independent Sample T-test and Mann-whitney U Test.

02

Conditions studied

  • Female Infertility

Keywords

  • Implantation
  • Recurrent implantation failure
  • N-acetyl cysteine
  • HOXA cluster genes
  • Window of implantation
03

In context

Infertility

2,506 studies on the registry are indexed under Infertility; 407 are open to participants now.

This study's enrollment of 40 is below the median of 120 across 1,698 interventional studies indexed under Infertility.

Browse Infertility studies →

Lead sponsor

Royan Institute is the lead sponsor of 92 studies on the registry; 3 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
22 Years to 40 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  1. Age between 20 and 40 years old
  2. At least two IVF failure
  3. BMI in the normal range

Exclusion criteria

Exclusion Criteria:

  1. Irregular menstrual cycle
  2. Taking hormonal drugs except thyroid medication
  3. Abnormal karyotype or chromosomal disorders
  4. Coagulation problems.
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
40 participants (actual)

Study arms

  • Experimental
    N-acetyl cysteine

    Twenty two infertile women with the onset of endometrial preparation for evaluating genes expression, received 1200 mg of oral N-acetyl cysteine for at-least six weeks before starting ovarian stimulation

    Drug: N-acetyl cysteine

  • Placebo comparator
    Placebos

    Eighteen infertile women with the onset of endometrial preparation for evaluating genes expression, received placebo effervescent tablet for at-least six weeks before starting ovarian stimulation

    Drug: Placebos

Interventions

  • DrugN-acetyl cysteine

    Also known as: NAC

  • DrugPlacebos

    Also known as: Placebo effervescent tablet

06

What researchers measure

Primary outcomes

  1. Expression of HOXA in endometrium

    mRNA expression by quantitative PCR for homeo box A

    Time frame: approximately 20 days after the first day of menstruation (each day is 28 days)

Secondary outcomes

  1. Positive pregnancy test

    Measurement of quantitative serum β-hCG

    Time frame: 16 days after embryo transfer

  2. Endometrium thickness

    Endometrium thickness

    Time frame: approximately 20 day after the first day of menstruation (each day is 28 days)

07

Study locations

No study locations are listed for this record.

08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 5, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT03862586
Lead sponsor
Royan Institute
Responsible party
Sponsor
First posted
Mar 5, 2019
Start date
Feb 1, 2015
Primary completion
May 1, 2017
Completion
Jul 1, 2017
Last update
Mar 5, 2019

Study contacts

Parvaneh Afsharian, PhD
study director · Royan Institute
Ashraf Moini, MD
study chair · Royan Institute
Seyed Mehdi Kalantar, PhD
study chair · Shahid Sadoughi University of Medical Sciences
Maryam Shahhoseini, PhD
study director · Royan Institute
Vida Mokhtari, MSc
principal investigator · Royan Institute

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2019. You cannot join it, but the record below documents what was studied.

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