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Effect of Intrauterine Insemination on Subsequent Pregnancy Outcomes in Couples With Unexplained Pregnancy Loss: A Multicenter, Open-label, Randomized Controlled Trial

6. august 2026 opdateret af: Fang Wang, Lanzhou University Second Hospital

Unexplained pregnancy loss remains a major reproductive challenge, and effective management strategies for affected couples are limited. Although intrauterine insemination (IUI) is widely used in reproductive medicine, its effectiveness in improving subsequent pregnancy outcomes among couples with unexplained pregnancy loss has not been well established.

This multicenter, open-label, randomized controlled trial aims to evaluate whether IUI improves subsequent pregnancy outcomes compared with natural conception in couples with unexplained pregnancy loss. A total of 558 eligible couples will be enrolled and randomly assigned to either an IUI group or a natural conception group. Participants will be followed to assess reproductive outcomes. The findings of this study are expected to provide high-quality evidence regarding the role of IUI in the management of unexplained pregnancy loss and to inform future clinical practice.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

558

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

  • Kina
    • Beijing Municipality
      • Beijing, Beijing Municipality, Kina
        • Ikke rekrutterer endnu
        • Beijing Amcare Beisanhuan Women's & Children's Hospital
        • Kontakt:
    • Gansu
      • Lanzhou, Gansu, Kina
        • Rekruttering
        • Lanzhou university second hosipital
        • Kontakt:
    • Hebei
      • Shijiazhuang, Hebei, Kina
        • Ikke rekrutterer endnu
        • Hebei Reproductive Health Hospital
        • Kontakt:

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

Ingen

Beskrivelse

Inclusion Criteria:

  • Female participants aged 20-37 years.
  • History of at least one ultrasound-confirmed pregnancy loss (excluding biochemical pregnancy, ectopic pregnancy, and hydatidiform mole), with the most recent pregnancy loss occurring within the previous 12 months.
  • Desire for pregnancy at the time of enrollment.
  • Basal follicle-stimulating hormone (FSH) <10 IU/L.
  • Anti-Müllerian hormone (AMH) >1.1 ng/mL.
  • Male partner's semen analysis meeting the criteria for intrauterine insemination (IUI), with a post-processing total progressive motile sperm count ≥5 × 10⁶.
  • Ability and willingness to provide written informed consent.

Exclusion Criteria:

  • Congenital or acquired uterine structural abnormalities.
  • Thyroid dysfunction, defined as thyroid-stimulating hormone (TSH) >4.0 mIU/L.
  • Positive antiphospholipid antibodies, including lupus anticoagulant, anticardiolipin antibodies, or anti-β2 glycoprotein I antibodies.
  • Parental chromosomal abnormalities or a history of fetal chromosomal abnormalities in a previous pregnancy.
  • Participation in another interventional clinical trial during the study period.

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Forebyggelse
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Ingen indgriben: Natural Conception
Participants attempt natural conception without intrauterine insemination.
Eksperimentel: Intrauterine Insemination (IUI)
Participants undergo intrauterine insemination after randomization to improve the probability of conception.
Procedure: Intrauterine Insemination (IUI)
Participants assigned to the intervention group undergo intrauterine insemination (IUI) according to the study protocol. Processed sperm is placed into the uterine cavity during the periovulatory period to improve the likelihood of conception.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Early Miscarriage Rate
Tidsramme: From randomization until 10 weeks of gestation
The proportion of women who experience pregnancy loss before 10 weeks of gestation among those achieving pregnancy.
From randomization until 10 weeks of gestation

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Clinical Pregnancy Rate
Tidsramme: From randomization until clinical pregnancy assessment (6-8 weeks of gestation)
Clinical pregnancy confirmed by ultrasonographic visualization of an intrauterine gestational sac.
From randomization until clinical pregnancy assessment (6-8 weeks of gestation)
Live Birth Rate
Tidsramme: From randomization until delivery (approximately 40 weeks of gestation)
Delivery of a live infant after 24 weeks of gestation.
From randomization until delivery (approximately 40 weeks of gestation)
Preterm Birth Rate
Tidsramme: From randomization until delivery (approximately 40 weeks of gestation)
Delivery occurring between 28 and 37 completed weeks of gestation.
From randomization until delivery (approximately 40 weeks of gestation)
Adverse Event Rate
Tidsramme: From enrollment until completion of study follow-up (approximately 40 weeks of gestation)
Occurrence of adverse events including ovarian hyperstimulation syndrome, infection, and other treatment-related complications.
From enrollment until completion of study follow-up (approximately 40 weeks of gestation)

Samarbejdspartnere og efterforskere

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

Sponsor

Lanzhou University Second Hospital

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 (Faktiske)

27. januar 2026

Primær færdiggørelse (Anslået)

1. december 2027

Studieafslutning (Anslået)

31. december 2027

Datoer for studieregistrering

Først indsendt

23. juli 2026

Først indsendt, der opfyldte QC-kriterier

6. august 2026

Først opslået (Faktiske)

12. august 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

12. august 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

6. august 2026

Sidst verificeret

1. januar 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 2025A-1361

Plan for individuelle deltagerdata (IPD)

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