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GnRH Agonist Pretreatment in Persistent Chronic Endometritis Undergoing FET

10. juni 2026 opdateret af: Guoxia Yang

Association of GnRH Agonist Pretreatment With Pregnancy Outcomes in Women With Persistent Chronic Endometritis Undergoing Frozen Embryo Transfer

Women with PCE represent a treatment-resistant phenotype in whom the endometrial inflammatory and immune status remains abnormal despite antibiotic therapy. GnRH agonist pretreatment may be most beneficial in endometrial phenotypes marked by persistent or residual inflammatory impairment rather than in all frozen embryo transfer populations.We therefore conducted a single-center prospective cohort study to investigate whether GnRH-HRT, compared with non-GnRH-based preparations, improve clinical pregnancy and live birth in women with PCE undergoing FET,

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Undersøgelsestype

Observationel

Tilmelding (Anslået)

150

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen

Tager imod sunde frivillige

N/A

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

This prospective cohort study enrolls infertile patients diagnosed with persistent chronic endometritis who receive FET in reproductive center. Subjects are allocated into two groups: down-regulation endometrial preparation group and conventional artificial cycle or natural cycle group. We compare implantation, clinical pregnancy, miscarriage and live birth rates between two regimens.

Beskrivelse

Inclusion Criteria:

  • Aged 20-40 years; confirmed persistent chronic endometritis (PCE) via hysteroscopy plus CD138 immunohistochemistry, defined as positive endometrial pathology after two-course antibiotic treatment for CE.
  • Frozen-thawed embryo transfer (FET) with available transferable cleavage-stage or blastocyst embryos from IVF/ICSI cycles.
  • No acute pelvic infection at enrollment; ≥1 month elapsed after completion of last antibiotic therapy for endometritis.
  • Normal uterine cavity except for inflammatory changes of PCE; no severe uterine malformation or severe intrauterine adhesion requiring surgical intervention.
  • Voluntarily sign informed consent and complete full follow-up of pregnancy outcomes

Exclusion Criteria:

  • History of pelvic tuberculosis, intrauterine adhesions, submucous uterine myoma or endometrial polyp before FET
  • Uncontrolled systemic endocrine disorders, autoimmune diseases (APS, SLE), severe hepatic/renal/cardiopulmonary dysfunction.
  • Known allergy to GnRH agonist for down-regulation regimen; prior long-acting GnRH-a intolerance.
  • Recent use of immunosuppressant, long-term glucocorticoid or drugs interfering endometrial development within 3 months before enrollment.
  • Lost to follow-up or plan to abandon embryo transfer after enrollment.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Intervention / Behandling
GnRH/HRT
PCE patients with GnRH agonist pretreatment combined with hormone replacement therapy (GnRH-HRT) endometrial preparation
Medicin: GnRH agonist plus estrogen-progesterone for endometrial preparation
Long-acting GnRH agonist is administered on day 2-3 of menstruation for pituitary down-regulation. After satisfactory hormonal suppression, sequential oral estrogen and progesterone are used to prepare endometrium before frozen embryo transfer in patients with persistent chronic endometritis.
non-GnRH-HRT
PCE patients with non-GnRH-HRT regimens (HRT alone or natural cycle, NC),
Medicin: Conventional estrogen-progesterone artificial cycle for endometrial preparation
No GnRH-a down-regulation. Oral estrogen is initiated directly on early menstrual cycle, followed by progesterone transformation to prepare endometrium for FET in patients with persistent chronic endometritis.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Clinical pregnancy rate
Tidsramme: 6-7 weeks
Clinical pregnancy was defined as the visualization of at least one gestational sac on transvaginal ultrasonography at 6-7 weeks of gestation
6-7 weeks

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
miscarriage rate
Tidsramme: 24 weeks
Miscarriage rate was defined as the proportion of clinical pregnancies ending in spontaneous pregnancy loss before 24 gestational weeks. Early miscarriage was defined as pregnancy loss occurring before 12 weeks of gestation.
24 weeks
Live birth rate
Tidsramme: 37 weeks
Live birth was defined as the delivery of at least one live-born infant at ≥24 weeks of gestation.
37 weeks

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Guoxia Yang

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

1. juni 2026

Primær færdiggørelse (Anslået)

1. juni 2027

Studieafslutning (Anslået)

1. juni 2028

Datoer for studieregistrering

Først indsendt

4. juni 2026

Først indsendt, der opfyldte QC-kriterier

10. juni 2026

Først opslået (Faktiske)

11. juni 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

11. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

10. juni 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • PCE

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Kronisk Endometritis

Kliniske forsøg med GnRH agonist plus estrogen-progesterone for endometrial preparation

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Betingelser

Sjældne sygdomme

Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

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