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Is There a Correlation Between Endometrial CD56 Levels and the Unfavorable KIR AA Genotype in IVF Implantation Success?

Is There a Correlation Between Endometrial CD56 Levels and the Unfavorable KIR AA Genotype in IVF Implantation Success?

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT06795984
Enrollment
80
Registered
2025-01-28
Start date
2023-08-12
Completion date
2024-12-11
Last updated
2025-01-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Blastocyst IVF, Pregnancy Rate IVF

Brief summary

This prospective observational study was conducted over 12 months and involved 80 IVF patients aged 20-40 years. Patients were divided into two groups based on KIR genotype (KIR AA and non-KIR AA). Endometrial biopsies were collected during the mid-luteal phase for immunohistochemical analysis of CD56+ NK cell levels. Statistical analyses, including logistic regression and ROC curve evaluation, assessed the relationship between CD56 levels, KIR genotype, and implantation success.

Interventions

OTHEREstablishing the correlation between KIR AA and KIR non-AA and CD56 endometrial cells and IVF succes

The analysis aimed to compare CD56 levels between patients with the KIR AA genotype and those without. A multiple linear regression model was used to determine the predictive value of CD56+ levels, KIR genotype, and age on the number of blastocysts.

Sponsors

Calla IVF Center
Lead SponsorOTHER

Study design

Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
FEMALE
Age
21 Years to 40 Years

Inclusion criteria

* Female patients aged 20-40 years. * Normal uterine cavity confirmed by hysteroscopy or sonohysterography. * At least three previous failed IVF cycles or a history of recurrent pregnancy loss (RPL).

Exclusion criteria

* uterine abnormalities, * systemic autoimmune diseases, * severe male infertility factors.

Design outcomes

Primary

MeasureTime frameDescription
the relationship between endometrial CD56+ NK cells, KIR AA genotypes, and IVF success.12 monthsThe value of CD56 NK cell and KIR AA in patients undergoing IVF and pregnancy rate

Countries

Romania

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026