NCT05873725

Brief Summary

Follitropin delta is a rFSH, uniquely expressed in a human fetal retinal cell line, which owing to differences in glycosylation profile has a lower clearance and induces a higher ovarian response in humans than existing rFSH preparations when administered at equal doses of biological activity. A noninferiority clinical trial (ESTHER-1) in which individualized dosage of follitropin delta according to each patient's profile (AMH and weight) was compared to conventional follitropin alfa dosing for IVF have demonstrated that an individualized follitropin delta dosing is noninferior to conventional follitropin alfa with respect to ongoing pregnancy rate, ongoing implantation rate, and also live births, with a concomitant reduction in iatrogenic complications, including OHSS

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
118

participants targeted

Target at P50-P75 for all trials

Timeline
Completed

Started May 2023

Shorter than P25 for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

May 15, 2023

Completed
5 days until next milestone

Study Start

First participant enrolled

May 20, 2023

Completed
4 days until next milestone

First Posted

Study publicly available on registry

May 24, 2023

Completed
4 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 30, 2023

Completed
6 months until next milestone

Study Completion

Last participant's last visit for all outcomes

March 19, 2024

Completed
Last Updated

December 9, 2025

Status Verified

December 1, 2025

Enrollment Period

4 months

First QC Date

May 15, 2023

Last Update Submit

December 3, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Number of good quality blastocysts

    Number of good quality oocytes fertilized

    Up to 6 day

Study Arms (2)

Follitropin delta + hCG

Combination of follitropin delta and serial hCG injections at individualized doses, where dosing regimen was determined according to AMH and weight in women undergoing an IVF antagonist cycle

Drug: Follitropin delta

Follitropin delta + HP-hMG

Combination of follitropin delta and highly-purified human menopausal gonadotropin (HP-hMG) where dosing regimen was determined according to AMH and weight in women undergoing an IVF antagonist cycle

Drug: Follitropin delta

Interventions

Evaluation of the IVF cycle using the prescribed medication

Follitropin delta + HP-hMGFollitropin delta + hCG

Eligibility Criteria

Age18 Years - 42 Years
Sexfemale
Age GroupsAdult (18-64)
Sampling MethodNon-Probability Sample
Study Population

Women consulting the clinic for fertility issues that require in vitro fertilization

You may qualify if:

  • Women 18 to 42 years of age undergoing IVF/ICSI cycle
  • IVF antagonist protocol
  • Regular menstrual cycles of 24-35 days
  • Presence of both ovaries

You may not qualify if:

  • Endometriosis stage III/IV
  • History of recurrent miscarriages, defined as ≥ 3 consecutive losses
  • Women undergoing ovarian stimulation for oncologic or elective fertility preservation
  • Women participating in any other research project
  • Hypersensitivity to follitropin delta and/or human chorionic gonadotropin
  • Use of Growth Hormone (GH) during the stimulation cycle

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Clinique Ovo

Montreal, Quebec, H4P 2S4, Canada

Location

MeSH Terms

Conditions

Infertility

Interventions

follitropin delta

Condition Hierarchy (Ancestors)

Genital DiseasesUrogenital Diseases

Study Officials

  • Jacques Kadoch, MD

    Clinique Ovo

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
RETROSPECTIVE
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 15, 2023

First Posted

May 24, 2023

Study Start

May 20, 2023

Primary Completion

September 30, 2023

Study Completion

March 19, 2024

Last Updated

December 9, 2025

Record last verified: 2025-12

Locations