Effects of Intrauterine Administration of Autologous PBMC Modulated With IFNt on Endometrial Cell Populations

NCT ID: NCT05775211

Last Updated: 2025-05-21

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

300 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-03-13

Study Completion Date

2026-04-28

Brief Summary

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The aim of this clinical trial is to investigate the change in endometrial composition during the window of implantation following intrauterine administration of PBMC immunomodulated with IFNt.

Patients seeking assisted reproductive therapy will be invited to participate. Two endometrial biopsies will be obtained from each patient during mid-secretory phase of two consecutive menstrual cycles. The first biopsy will be obtained one month before the intervention, and the second one - a day after intrauterine administration of the tested cell treatment which will take place the following month.

Immunohistochemistry analysis of the cell composition of the endometrium will be performed.

Detailed Description

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Female patients with no known uterine pathologies and good general health undergoing treatment for unexplained infertility will be identified and invited to participate in the study. Endometrial biopsy will be obtained seven days after luteinizing hormone (LH) surge during a natural cycle. The following month, 5 days after LH surge, peripheral blood mononuclear cells (PBMC) will be isolated from patients' peripheral blood by density gradient (1.077g/ml) centrifugation and suspended in culture medium. The obtained PBMC will be incubated with 500 IU IFNt at 37˚C for 24 hours. This cell suspension will be carefully introduced in the uterine cavity by catheter on day 6 post LH surge. A second biopsy will be obtained the following day (LH+7).

Immunohistochemistry evaluation of endometrial tissue will be performed in terms of quantities and spatial distribution of various cell types.

Conditions

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Infertility

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

All participants will undergo the same procedures.
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Data analysis will be performed by investigators blind to the biopsy group.

Study Groups

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Endometrial composition before and after autologous modulated PBMC administration

The endometrial cell composition in terms of cell quantities and spatial distribution will be compared before and after intrauterine administration of immunomodulated PBMC.

Group Type EXPERIMENTAL

Intrauterine administration of PBMC immunomodulated with IFNt

Intervention Type BIOLOGICAL

Standard density gradient centrifugation will be performed to obtain autologous PBMC from patients' peripheral blood (9 ml). Isolated cells will be suspended in RPMI 1640 supplemented with 10% HSA (human serum albumin) and incubated in the presence of 500 IU/ml IFNt for 24 h at 37˚C. The cultured cell suspension will be introduced into the uterine cavity via a catheter.

Interventions

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Intrauterine administration of PBMC immunomodulated with IFNt

Standard density gradient centrifugation will be performed to obtain autologous PBMC from patients' peripheral blood (9 ml). Isolated cells will be suspended in RPMI 1640 supplemented with 10% HSA (human serum albumin) and incubated in the presence of 500 IU/ml IFNt for 24 h at 37˚C. The cultured cell suspension will be introduced into the uterine cavity via a catheter.

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

* Participating in Assisted Reproduction Treatment
* Having primary infertility
* Having regular menstrual cycles
* Having signed informed consent

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
Minimum Eligible Age

18 Years

Maximum Eligible Age

50 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes

Sponsors

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Nadezhda Women's Health Hospital

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Nadezhda Women's Health Hospital

Sofia, Sofia, Bulgaria

Site Status RECRUITING

Countries

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Bulgaria

Central Contacts

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Dimitar Parvanov, PhD

Role: CONTACT

885944618 ext. 359

Facility Contacts

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Georgi Stamenov, MD

Role: primary

888269839 ext. 359

Margarita Ruseva, MSc

Role: backup

889150267 ext. 359

Other Identifiers

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7/28022023

Identifier Type: -

Identifier Source: org_study_id

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