Using immune cells from patients to improve IVF outcomes

Effects of Intrauterine Administration of Autologous Peripheral Blood Mononuclear Cells (PBMC) Immunomodulated With Interferon Tau (IFNt) Prior to Embryo Transfer on IVF Outcome

NA · Nadezhda Women's Health Hospital · NCT05775198

This study is testing if using a special type of immune cell from women with infertility can improve the success of in vitro fertilization (IVF) by increasing pregnancy rates.

Quick facts

PhaseNA
Study typeInterventional
Enrollment300 (estimated)
Ages18 Years to 50 Years
SexFemale
SponsorNadezhda Women's Health Hospital (other)
Locations1 site (Sofia, Sofia)
Trial IDNCT05775198 on ClinicalTrials.gov

What this trial studies

This clinical trial aims to evaluate the impact of administering autologous peripheral blood mononuclear cells (PBMC) that have been modulated with interferon tau (IFNt) on the outcomes of in vitro fertilization (IVF). Female patients with primary infertility, scheduled for embryo transfer, will have their blood drawn to isolate PBMC, which will then be treated with IFNt and introduced into the uterine cavity prior to embryo transfer. The study will compare reproductive outcomes, including implantation rates, clinical pregnancy rates, and live birth rates, between those receiving the treatment and a control group not receiving the intervention.

Who should consider this trial

Good fit: Ideal candidates are women with primary infertility who are scheduled for embryo transfer of euploid embryos and have regular menstrual cycles.

Not a fit: Patients with uterine pathologies, active infections, or certain autoimmune conditions may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could enhance implantation and pregnancy rates for women undergoing IVF.

How similar studies have performed: While the use of immunomodulation in reproductive medicine is being explored, this specific approach with autologous PBMC and IFNt is relatively novel and has not been widely tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Participating in Assisted Reproduction Treatment
* Having primary infertility
* Having regular menstrual cycles
* Scheduled to undergo embryo transfer of euploid embryos only

Exclusion Criteria:

* Uterine pathologies
* Endometrial bacterial infections
* Active endometrial inflammation
* Polycystic ovary syndrome
* Presence of auto antibodies such as anti-TPO (thyroid peroxidase), anti-TG (thyroglobulin), ACA (anticentromere antibodies), APA (antiphospholipid antibodies), ANA (antinuclear antibodies), and anti-dsDNA
* Presence of mutations involving the coagulation system such as deficiency of factor XII, Pro C, Pro S
* Oncological condition
* Positive HIV (human immunodeficiency virus), HCV (hepatitis C virus) or HBV (hepatitis B virus) tests

Where this trial is running

Sofia, Sofia

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Infertility, Female, IVF, intrauterine PBMC, interferon tau, implantation, clinical pregnancy, live birth rate

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.