Low dose hCG before IVF in women with diminished ovarian reserve
Tests hCG against placebo before IVF in women with diminished ovarian reserve.
Key facts
- Who runs it
- Kristine Loessl
- Where
- Denmark1 site in 1 countryChoose a country to see its sites
- Trial code
- Registry title
- hCG Priming in Women With Diminished Ovarian Reserve
- Status
- Recruiting
- Phase
- Phase 3
- People taking part
- 80 people, planned
- Started
- 25 Jan 2026
- Expected to end
- 31 Mar 2031
- Type of study
- Interventional, 2 groupsOne group gets a placebo (a dummy treatment), for comparison.
- Treatments tested
- Choriongonadotropin alfa (hCG)
- Isotonic NaCl (Placebo)
- Record updated
- 21 September 2026
Who can take part
AI summary
From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.
The trial is looking for women with a low egg reserve (diminished ovarian reserve) who are having IVF/ICSI. They get 8 weeks of low dose hCG or placebo before a second ICSI treatment.
- Age
- 18 to 40 years (both included)
- Sex
- Women only
- Disease stage
- Diminished ovarian reserve. Regular menstrual cycle of 23-35 days.
- Earlier treatment
- Must be in the 1st to 5th IVF/ICSI cycle when joining.
- Biomarker or test result
- AMH < 6.29 pmol/L (Elecsys® AMH assay)
Main reasons for not taking part
- Malformed womb, blocked fluid-filled tube (hydrosalpinx), fibroids inside the womb lining or womb polyps
- Endometriosis stage III-IV
- Planned genetic testing of embryos or sperm taken from the testicle
- Ovarian enlargement or cysts, or vaginal bleeding of unknown cause
- Known severe illness, such as diabetes, heart, lung, liver or kidney disease, HIV, Hepatitis B/C, or certain cancers
The registry criteria, word for word
Show all 14 criteriaShow less
Who can take part
- Age 18-40 (both inclusive)
- Regular menstrual cycle (23-35 days)
- 1.-5. IVF/ICSI cycle at inclusion
- AMH < 6.29 pmol/L (Elecsys® AMH assay)
Who cannot take part
- Allergy to standard IVF/ICSI medication
- Known severe comorbidity*; i.e., Insulin dependent diabetes mellitus, non-insulin dependent diabetes mellitus, gastrointestinal, cardiovascular, thromboembolic (including active thromboembolic disorders), pulmonary, liver or kidney diseases, HIV or Hepatitis B/C, dysregulated thyroid disease, tumors of the hypothalamus or pituitary gland or ovarian, uterine, or mammary carcinoma
- Uterine malformations or hydrosalpinx
- Submucosal uterine myomas
- Uterine polyps
- Endometriosis stage III-IV
- Preimplantation genetic testing
- Testicular sperm aspiration/extraction
- Ovarian enlargement or cysts (other than normally occurring corpora luteae)
- Gynaecological haemorrhages of unknown aetiology
Check if you might fit
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 18 and 40 years old?
This trial has no sites in United States.
It has sites in one country. Choose a country to see its sites.
About the trial
What the trial wants to find out
The aim of this randomized controlled trial is to further examine the possible effects of low dose human chorionic gonadotropin (hCG) priming for eight weeks in women with diminished ovarian reserve (DOR) undergoing in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI). The investigators want to retest the findings of our first study in an identical paired design (NCT04643925), as an increase of 1.5 in mean number of oocytes retrieved is clinically relevant. To incorporate the strengths of a randomized controlled trial design, women will be randomized after their first ICSI treatment to receive either hCG or placebo in a double-blinded design during an eight-week priming period preceding their second ICSI treatment. The primary outcome is the number of oocytes retrieved in the second ICSI treatment.
The 2 groups in the trial
- hCG PrimingTreatment being tested
Women in the experimental group will undergo the following treatment in order: A standard IVF/ICSI cycle (ICSI I): A standard IVF/ICSI cycle in the fixed GnRH-antagonist protocol using a daily dose of 300 IU rFSH initiated from cd 2-3 and a GnRH antagonist (Ganirelix 0.25 mg) from stimulation day 5-6 followed by blastocyst culture and a freeze-all strategy. Priming period: hCG priming 260 IU once daily for two menstrual cycles (approximately 8 weeks). A standard IVF/ICSI cycle (ICSI I): A standard IVF/ICSI cycle in the fixed GnRH-antagonist protocol using a daily dose of 300 IU rFSH initiated from cd 2-3 and a GnRH antagonist (Ganirelix 0.25 mg) from stimulation day 5-6 followed by blastocyst culture and a single blastocyst transfer at day 5.
Treatment: Choriongonadotropin alfa (hCG)
- PlaceboPlacebo, for comparison
Women in the placebo group will undergo the following treatment in order: A standard IVF/ICSI cycle (ICSI I): A standard IVF/ICSI cycle in the fixed GnRH-antagonist protocol using a daily dose of 300 IU rFSH initiated from cd 2-3 and a GnRH antagonist (Ganirelix 0.25 mg) from stimulation day 5-6 followed by blastocyst culture and a freeze-all strategy. Priming period: Placebo (isotone NaCl) injections once daily for two menstrual cycles (approximately 8 weeks). A standard IVF/ICSI cycle (ICSI I): A standard IVF/ICSI cycle in the fixed GnRH-antagonist protocol using a daily dose of 300 IU rFSH initiated from cd 2-3 and a GnRH antagonist (Ganirelix 0.25 mg) from stimulation day 5-6 followed by blastocyst culture and a single blastocyst transfer at day 5.
Treatment: Isotonic NaCl (Placebo)
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorData and sources
- Registry record
- Listed on ClinicalTrials.gov and on the EU's official list of trials (CTIS).
- Official title
- Eight Weeks of Low Dose hCG Priming in Women With Diminished Ovarian Reserve Undergoing IVF/ICSI - a Randomized Controlled Trial
- Plain-language title
- Low dose hCG before IVF in women with diminished ovarian reserveGenerated from the registry record. The registry title is the official one.
- AI summary
- From the trial's eligibility criteria. Read by machine on 15 November 2026.
- Fit questions
- Built from NCT07108621, who can take part
- Record updated
- 21 September 2026