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A Study to Investigate the Efficacy and Safety of a Single Injection of Corifollitropin Alfa (Organon 36286) for Ovarian Stimulation Using Daily Recombinant Follicle Stimulating Hormone (FSH) as Reference (P05787)

A Phase III, Randomized, Double-Blind, Active-Controlled, Non-Inferiority Clinical Trial to Investigate the Efficacy and Safety of a Single Injection of Org 36286 (Corifollitropin Alfa) to Induce Multifollicular Development for Controlled Ovarian Stimulation Using Daily Recombinant FSH as Reference

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00696800
Enrollment
1509
Registered
2008-06-13
Start date
2006-06-27
Completion date
2008-01-15
Last updated
2024-06-20

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

Conditions

In Vitro Fertilization

Keywords

Infertility, Pharmacological effect of drugs, Hormones, Hormone substitutes and hormone antagonists, Pharmacological actions, Randomized, Multi-center, Multi-national, Double-blind, Active-controlled, Non-inferiority

Brief summary

To investigate the efficacy and safety of a single injection of 150 μg Corifollitropin Alfa (Organon 36286) to induce multifollicular development for controlled ovarian stimulation using daily recombinant FSH (recFSH) as a reference. The primary hypothesis is that a single injection of Corifollitropin Alfa is non-inferior to daily treatment with recFSH in initiating multifollicular growth.

Detailed description

This is a randomized, double-blind, active-controlled, non-inferiority clinical trial investigating the efficacy and safety of a new treatment regimen with Corifollitropin Alfa, a recombinant gonadotropin applied to initiate and sustain follicular stimulation in controlled ovarian stimulation for Assisted Reproductive Technology (ART). For this regimen, participants receive a single injection of Corifollitropin Alfa and one week later, treatment is continued with daily recFSH up to the day of triggering final oocyte maturation. In the reference group participants receive daily injections of recFSH up to the day of triggering final oocyte maturation. Non-inferiority in ongoing pregnancy rates (assessed at least 10 weeks after embryo transfer) will be the primary endpoint for this trial. The number of oocytes retrieved will be analyzed as co-primary endpoint.

Interventions

DRUGCorifollitropin alfa

On the morning of day 2 or 3 of the menstrual cycle (Stimulation Day 1), a single SC injection of 150 μg (0.5 mL) Corifollitropin Alfa was administered in the abdominal wall.

BIOLOGICALRecFSH / Follitropin beta (Days 1 to 7)

Daily SC injections with 200 IU fixed dose recFSH were started on Stimulation Day 1 and continued up to and including Stimulation Day 7.

DRUGPlacebo Corifollitropin alfa

Pre-filled syringe containing an identical solution when compared to Corifollitropin Alfa. On the morning of day 2 or 3 of the menstrual cycle (Stimulation Day 1), a single SC injection was administered in the abdominal wall.

DRUGPlacebo RecFSH / follitropin beta

Identical ready-for-use solution, but without the active ingedient, supplied in cartridges for SC injection with the Follistim Pen. Daily SC injections were started on Stimulation Day 1 and continued up to and including Stimulation Day 7.

BIOLOGICALRecFSH / Follitropin beta (Days 8 to hCG)

From Stimulation Day 8 onwards a daily SC dose of 200 IU recFSH was administered up to and including the Day of hCG.

DRUGGanirelix

On Stimulation Day 5 a daily SC injection of 0.25 mg was started, which continued up to and including the day of hCG

BIOLOGICALhCG

When 3 follicles \>= 17 mm were observed by USS, a single dose of 10,000 IU/USP hCG was administered; or, for those at risk for Ovarian Hyperstimulation Syndrome (OHSS), a lower dose of 5,000 IU/USP

BIOLOGICALProgesterone

On the day of OPU, luteal phase support was started by administering micronized progesterone of at least 600 mg/day vaginally, or at least 50 mg/day intramuscular (IM), which continued for at least 6 weeks, or up to menses.

Sponsors

Organon and Co
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 36 Years
Healthy volunteers
No

Inclusion criteria

* Females of couples with an indication for Controlled Ovarian Stimulation (COS) and in-vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI); * \>=18 and \<=36 years of age at the time of signing informed consent; * Body weight \> 60 and \<=90 kg and body mass index (BMI) \>=18 and \<=32 kg/m\^2; * Normal menstrual cycle length: 24-35 days; * Availability of ejaculatory sperm (use of donated and/or cryopreserved sperm is allowed); * Willing and able to sign informed consent.

Exclusion criteria

* History of/or any current (treated) endocrine abnormality; * History of ovarian hyper-response or ovarian hyperstimulation syndrome (OHSS); * History of/or current polycystic ovary syndrome (PCOS); * More than 20 basal antral follicles \<11 mm (both ovaries combined) as measured on ultrasound scan (USS) in the early follicular phase (menstrual cycle day 2-5); * Less than 2 ovaries or any other ovarian abnormality (including endometrioma \> 10 mm; visible on USS); * Presence of unilateral or bilateral hydrosalphinx (visible on USS); * Presence of any clinically relevant pathology affecting the uterine cavity or fibroids \>=5 cm; * More than three unsuccessful IVF cycles since the last established ongoing pregnancy (if applicable); * History of non- or low ovarian response to FSH/ human menopausal gonadotropin (hMG) treatment; * History of recurrent miscarriage (3 or more, even when unexplained); * FSH \> 12 IU/L or LH \> 12 IU/L as measured by the local laboratory (sample taken during the early follicular phase: menstrual cycle day 2-5); * Any clinically relevant abnormal laboratory value based on a sample taken during the screening phase; * Contraindications for the use of gonadotropins (e.g. tumors, pregnancy/lactation, undiagnosed vaginal bleeding, hypersensitivity, ovarian cysts); * Recent history of/or current epilepsy, human immunodeficiency virus (HIV) infection, diabetes, cardiovascular, gastro-intestinal, hepatic, renal or pulmonary disease; * Abnormal karyotyping of the patient or her partner (if karyotyping is performed); * Smoking more than 5 cigarettes per day; * History or presence of alcohol or drug abuse within 12 months prior to signing informed consent; * Previous use of Org 36286; * Use of hormonal preparations within 1 month prior to randomization; * Hypersensitivity to any of the concomitant medication prescribed as part of the treatment regimen in this protocol; * Administration of investigational drugs within three months prior to signing informed consent.

Design outcomes

Primary

MeasureTime frameDescription
Mean Number of Oocytes RetrievedUp to 36 hours after administration of hCG (up to 1 year)Up to 36 hours after receiving hCG, cumulus-oocyte-complexes were retrieved. Mean numbers retrieved were calculated per attempt, meaning that if a participant did not reach this stage in In Vitro Fertilization (IVF) treatment, zero values were imputed.
Percentage of Participants With an Ongoing Pregnancy (Ongoing Pregnancy Rate)Assessed at least 10 weeks after embryo transfer (up to 1 year)An ongoing pregnancy is a fetus with heart activity at least 10 weeks after embryo transfer as assessed by Ultrasound Scan (USS) or Doppler or is confirmed by live birth. The ongoing pregnancy rate is 100 times the number of participants with an ongoing pregnancy after embryo transfer, divided by the total number of participants who started treatment. Calculations were made per attempt, meaning that participants who did not have embryo transfers were considered not pregnant.

Secondary

MeasureTime frameDescription
Serum FSH Levels During StimulationUp to day of hCG treatment (up to 1 year)Mean serum FSH are presented over one Controlled Ovarian Stimulation (COS) cycle: from Day 1 (Pre-dose) up to the day of hCG treatment.
Serum Luteinizing Hormone (LH) Levels During StimulationUp to day of hCG treatment (up to 1 year)Mean serum LH levels are presented over one COS cycle: from Day 1 (Pre-dose) up to the day of hCG treatment.
Serum Estradiol (E2) Levels During StimulationUp to day of hCG treatment (up to 1 year)Mean serum E2 levels are presented over one COS cycle: from Day 1 (Pre-dose) up to the day of hCG treatment.
Serum Progesterone (P) Levels During StimulationUp to day of hCG treatment (up to 1 year)Mean serum P levels are presented over one COS cycle: from Day 1 (Pre-dose) up to day of hCG treatment
Serum Inhibin-B Levels During StimulationUp to day of hCG treatment (up to 1 year)Mean serum Inhibin-B levels are presented over one COS cycle: from Day 1 (Pre-dose) up to day of hCG treatment
Number of Follicles Categorized by Size on Stimulation Day 1On Day 1 of treatment (up to 1 year)Ovaries were assessed during stimulation by ultrasonographic investigation (USS), and the mean number of follicles are categorized by their size.
Number of Follicles Categorized by Size on Stimulation Day 5On Day 5 of treatment (up to 1 year)Ovaries were assessed during stimulation by USS, and the mean number of follicles are categorized by their size.
Number of Follicles Categorized by Size on Stimulation Day 8On Day 8 of treatment (up to 1 year)Ovaries were assessed during stimulation by USS, and the mean number of follicles are categorized by their size.
Number of Follicles Categorized by Size on the Day of hCGDay of HCG treatment (up to 1 year)Ovaries were assessed during stimulation by USS, and the mean number of follicles are categorized by their size.
Median Amount of Recombinant FSH Needed to Induce Multifollicular Development Starting at Day 1From Day 1 to day of hCG treatment (up to 1 year)The amount of recFSH administered for a participant to reach 3 follicles \>= 17 mm, starting from treatment Day 1 onwards.
Number of Oocytes Assessed Prior to Intracytoplasmic Sperm Injection (ICSI)Up to 36 hours after administration of hCG (up to 1 year)The number of oocytes used for ICSI was assessed, and categorized based on their quality
Percentage of Fertilized Oocytes (Fertilization Rate)Up to 18 hours after start of fertilization (up to 1 year)The fertilization rate is 100 times the number of fertilized 2 pro-nuclei (2PN) oocytes obtained, divided by the number of oocytes fertilized by IVF or ICSI
Number of Embryos Obtained on Day 3 Categorized by QualityPost fertilization Day 3 (up to 1 year)Embryos obtained on Day 3 were categorized by their qualiity as follows: Grade 1: excellent: No fragmentation, 6-10 cells, and equal blastomere size taking the impact of cell division into account. Grade 2: good: \< 20% fragmentation, 6-10 cells, and equal blastomere size taking the impact of cell division into account. Grade 3: fair: 20-50% fragmentation and/or less than 6 cells and/or multinucleation (if observed). Other Grade: Embryos that do not qualify as Grades 1, 2 or 3. Grades 1 and 2 are considered good quality.
Number of Embryos Transferred on Day 3Post fertilization Day 3 (up to 1 year)After fertilization, the mean number of embryos transferred on Day 3 were assessed. Total and good quality embryos are presented, with good quality embryos, Grades 1 and 2, defined as the following: Grade 1: excellent: No fragmentation, 6-10 cells, and equal blastomere size taking the impact of cell division into account. Grade 2: good: \< 20% fragmentation, 6-10 cells, and equal blastomere size taking the impact of cell division into account.
Percentage of Gestational Sacs (Implantation Rate)Up to 6 weeks after embryo transfer (up to 1 year)The implantation rate is 100 times the number of gestational sacs assessed by USS after embryo transfer, divided by the number of embryos transferred.
Percentage of Participants With a Miscarriage (Miscarriage Rate) Per Clinical PregnancyUp to day of miscarriage (up to 1 year)The miscarriage rate is 100 times the number of miscarriages, divided by the number of clinical pregnancies assessed by USS. A clinical pregnancy is the presence of at least one gestational sac or confirmed by live birth.
Percentage of Participants With a Miscarriage (Miscarriage Rate) Per Vital PregnancyUp to day of miscarriage (up to 1 year)The miscarriage rate is 100 times the number of miscarriages, divided by the number of vital pregnancies assessed by USS. A vital pregnancy is the presence of at least one fetus with heart activity.
Percentage of Participants With a Biochemical Pregnancy (Pregnancy Rate) Per AttemptTwo weeks after embryo transfer (up to 1 year)Biochemical pregnancy was assessed by measuring serum or urinary hCG. Per attempt means that if a participant did not reach the stage of pregnancy assessment zero values were imputed. The pregnancy rate is 100 times the number of participants with pregnancies detected, divided by the number of participants assessed.
Percentage of Participants With a Biochemical Pregnancy (Pregnancy Rate) Per Embryo TransferTwo weeks after embryo transfer (up to 1 year)Biochemical pregnancy was assessed for participants who had embryo transfer by measuring serum or urinary hCG. The pregnancy rate is 100 times the number of participants with pregnancies detected, divided by the number of participants assessed.
Number of Cumulus-oocyte-complexesUp to 36 hours after administration of hCG (up to 1 year)Prior to IVF the mean number of cumulus-oocyte-complexes used for IVF was assessed
Median Amount of Recombinant FSH Needed to Induce Multifollicular Development Starting at Day 8From Day 8 to Day of hCG treatment (up to 1 year)The amount of recFSH administered for a participant to reach 3 follicles \>= 17 mm, starting from treatment Day 8 onwards.

Participant flow

Pre-assignment details

Of 1509 randomized participants, 1506 received treatment with either Corifollitropin Alfa or recFSH (Intent-to Treat population \[ITT\]).

Participants by arm

ArmCount
150 µg Corifollitropin Alfa
Participants received a single SC injection of 150 µg Corifollitropin Alfa on day 2 or 3 of the menstrual cycle (Stimulation Day 1); 7 daily SC injections from Stimulation Days 1 to 7 with placebo-recFSH; followed by daily SC injections with 200 IU recFSH up to the day of hCG; multiple daily SC injections of Ganirelix were given from Stimulation Day 5 to the day of hCG; a single dose of hCG was administered when 3 follicles \>= 17 mm were observed; and on the day of OPU daily doses of progesterone were started and continued for up to 6 weeks or menses.
756
200 IU recFSH
Participants received a single SC injection of placebo Corifollitropin Alfa on day 2 or 3 of the menstrual cycle (Stimulation Day 1); 7 daily SC injections with 200 IU recFSH from Stimulation Days 1 to 7; followed by daily SC injections with 200 IU recFSH up to the day of hCG; multiple daily SC injections of Ganirelix were given from Stimulation Day 5 to the day of hCG; single dose of hCG was administered when 3 follicles \>= 17 mm were observed; and on the day of OPU daily doses of progesterone were started and continued for up to 6 weeks or menses.
750
Total1,506

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event163
Overall StudyInsufficient compliance with medication21
Overall StudyInsufficient ovarian response41
Overall StudyInsufficient ovarian response on Day 841
Overall StudyNo/abnormal fertilization1113
Overall StudyNo/too few/bad quality embryos2418
Overall StudyNo/too few/bad quality oocytes43
Overall StudyNot treated12
Overall StudyOther Reasons53
Overall StudyRisk Ovarian Hyperstimulation Syndrome82
Overall StudyToo high ovarian response61

Baseline characteristics

Characteristic150 µg Corifollitropin Alfa200 IU recFSHTotal
Age, Continuous31.5 Years
STANDARD_DEVIATION 3.3
31.5 Years
STANDARD_DEVIATION 3.2
31.5 Years
STANDARD_DEVIATION 3.3
Sex: Female, Male
Female
756 Participants750 Participants1506 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
403 / 755383 / 751
serious
Total, serious adverse events
35 / 75530 / 751

Outcome results

Primary

Mean Number of Oocytes Retrieved

Up to 36 hours after receiving hCG, cumulus-oocyte-complexes were retrieved. Mean numbers retrieved were calculated per attempt, meaning that if a participant did not reach this stage in In Vitro Fertilization (IVF) treatment, zero values were imputed.

Time frame: Up to 36 hours after administration of hCG (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to.

ArmMeasureValue (MEAN)Dispersion
150 µg Corifollitropin AlfaMean Number of Oocytes Retrieved13.8 Number of oocytesStandard Deviation 8.3
200 IU recFSHMean Number of Oocytes Retrieved12.6 Number of oocytesStandard Deviation 6.8
p-value: 0.00195% CI: [0.5, 1.9]ANOVA
Primary

Percentage of Participants With an Ongoing Pregnancy (Ongoing Pregnancy Rate)

An ongoing pregnancy is a fetus with heart activity at least 10 weeks after embryo transfer as assessed by Ultrasound Scan (USS) or Doppler or is confirmed by live birth. The ongoing pregnancy rate is 100 times the number of participants with an ongoing pregnancy after embryo transfer, divided by the total number of participants who started treatment. Calculations were made per attempt, meaning that participants who did not have embryo transfers were considered not pregnant.

Time frame: Assessed at least 10 weeks after embryo transfer (up to 1 year)

Population: Intent to Treat (ITT) population consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to.

ArmMeasureValue (NUMBER)
150 µg Corifollitropin AlfaPercentage of Participants With an Ongoing Pregnancy (Ongoing Pregnancy Rate)39.0 Percentage of participants
200 IU recFSHPercentage of Participants With an Ongoing Pregnancy (Ongoing Pregnancy Rate)38.1 Percentage of participants
95% CI: [-3.8, 5.9]
Secondary

Median Amount of Recombinant FSH Needed to Induce Multifollicular Development Starting at Day 1

The amount of recFSH administered for a participant to reach 3 follicles \>= 17 mm, starting from treatment Day 1 onwards.

Time frame: From Day 1 to day of hCG treatment (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to. Restricted to participants with hCG injection.

ArmMeasureValue (MEDIAN)
150 µg Corifollitropin AlfaMedian Amount of Recombinant FSH Needed to Induce Multifollicular Development Starting at Day 1400 IU
200 IU recFSHMedian Amount of Recombinant FSH Needed to Induce Multifollicular Development Starting at Day 11800 IU
Secondary

Median Amount of Recombinant FSH Needed to Induce Multifollicular Development Starting at Day 8

The amount of recFSH administered for a participant to reach 3 follicles \>= 17 mm, starting from treatment Day 8 onwards.

Time frame: From Day 8 to Day of hCG treatment (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to. Restricted to participants with hCG injection.

ArmMeasureValue (MEDIAN)
150 µg Corifollitropin AlfaMedian Amount of Recombinant FSH Needed to Induce Multifollicular Development Starting at Day 8400 IU
200 IU recFSHMedian Amount of Recombinant FSH Needed to Induce Multifollicular Development Starting at Day 8400 IU
Secondary

Number of Cumulus-oocyte-complexes

Prior to IVF the mean number of cumulus-oocyte-complexes used for IVF was assessed

Time frame: Up to 36 hours after administration of hCG (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to. Restricted to participants who underwent IVF.

ArmMeasureValue (MEAN)Dispersion
150 µg Corifollitropin AlfaNumber of Cumulus-oocyte-complexes13.6 Number of cumulus-oocyte complexesStandard Deviation 8.2
200 IU recFSHNumber of Cumulus-oocyte-complexes12.8 Number of cumulus-oocyte complexesStandard Deviation 7
Secondary

Number of Embryos Obtained on Day 3 Categorized by Quality

Embryos obtained on Day 3 were categorized by their qualiity as follows: Grade 1: excellent: No fragmentation, 6-10 cells, and equal blastomere size taking the impact of cell division into account. Grade 2: good: \< 20% fragmentation, 6-10 cells, and equal blastomere size taking the impact of cell division into account. Grade 3: fair: 20-50% fragmentation and/or less than 6 cells and/or multinucleation (if observed). Other Grade: Embryos that do not qualify as Grades 1, 2 or 3. Grades 1 and 2 are considered good quality.

Time frame: Post fertilization Day 3 (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to. Restricted to participants with IVF and/or ICSI, and excludes those who had embryos transferred or cryopreserved before Day 3.

ArmMeasureGroupValue (MEAN)Dispersion
150 µg Corifollitropin AlfaNumber of Embryos Obtained on Day 3 Categorized by QualityTotal8.4 Number of embryosStandard Deviation 5.5
150 µg Corifollitropin AlfaNumber of Embryos Obtained on Day 3 Categorized by QualityGood Quality4.7 Number of embryosStandard Deviation 4.3
150 µg Corifollitropin AlfaNumber of Embryos Obtained on Day 3 Categorized by QualityGrade 12.6 Number of embryosStandard Deviation 3.4
150 µg Corifollitropin AlfaNumber of Embryos Obtained on Day 3 Categorized by QualityGrade 22.1 Number of embryosStandard Deviation 2.5
150 µg Corifollitropin AlfaNumber of Embryos Obtained on Day 3 Categorized by QualityGrade 32.4 Number of embryosStandard Deviation 2.6
150 µg Corifollitropin AlfaNumber of Embryos Obtained on Day 3 Categorized by QualityOther Grade1.4 Number of embryosStandard Deviation 2.2
200 IU recFSHNumber of Embryos Obtained on Day 3 Categorized by QualityGrade 32.0 Number of embryosStandard Deviation 2.3
200 IU recFSHNumber of Embryos Obtained on Day 3 Categorized by QualityTotal7.5 Number of embryosStandard Deviation 4.8
200 IU recFSHNumber of Embryos Obtained on Day 3 Categorized by QualityGrade 22.0 Number of embryosStandard Deviation 2.3
200 IU recFSHNumber of Embryos Obtained on Day 3 Categorized by QualityGood Quality4.5 Number of embryosStandard Deviation 3.9
200 IU recFSHNumber of Embryos Obtained on Day 3 Categorized by QualityOther Grade1.1 Number of embryosStandard Deviation 2.1
200 IU recFSHNumber of Embryos Obtained on Day 3 Categorized by QualityGrade 12.5 Number of embryosStandard Deviation 3.4
Secondary

Number of Embryos Transferred on Day 3

After fertilization, the mean number of embryos transferred on Day 3 were assessed. Total and good quality embryos are presented, with good quality embryos, Grades 1 and 2, defined as the following: Grade 1: excellent: No fragmentation, 6-10 cells, and equal blastomere size taking the impact of cell division into account. Grade 2: good: \< 20% fragmentation, 6-10 cells, and equal blastomere size taking the impact of cell division into account.

Time frame: Post fertilization Day 3 (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to. Restricted to participants with embryo transfer.

ArmMeasureGroupValue (MEAN)Dispersion
150 µg Corifollitropin AlfaNumber of Embryos Transferred on Day 3Total1.7 Number of embryosStandard Deviation 0.4
150 µg Corifollitropin AlfaNumber of Embryos Transferred on Day 3Good Quality1.4 Number of embryosStandard Deviation 0.7
200 IU recFSHNumber of Embryos Transferred on Day 3Total1.7 Number of embryosStandard Deviation 0.4
200 IU recFSHNumber of Embryos Transferred on Day 3Good Quality1.4 Number of embryosStandard Deviation 0.7
Secondary

Number of Follicles Categorized by Size on Stimulation Day 1

Ovaries were assessed during stimulation by ultrasonographic investigation (USS), and the mean number of follicles are categorized by their size.

Time frame: On Day 1 of treatment (up to 1 year)

Population: ITT population (consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to) with USS data available on Stimulation Day 1.

ArmMeasureGroupValue (MEAN)Dispersion
150 µg Corifollitropin AlfaNumber of Follicles Categorized by Size on Stimulation Day 1>=17 mm0.0 Number of folliclesStandard Deviation 0.2
150 µg Corifollitropin AlfaNumber of Follicles Categorized by Size on Stimulation Day 1>=11 mm0.1 Number of folliclesStandard Deviation 0.3
150 µg Corifollitropin AlfaNumber of Follicles Categorized by Size on Stimulation Day 1>=15 mm0.0 Number of folliclesStandard Deviation 0.2
200 IU recFSHNumber of Follicles Categorized by Size on Stimulation Day 1>=17 mm0.0 Number of folliclesStandard Deviation 0.2
200 IU recFSHNumber of Follicles Categorized by Size on Stimulation Day 1>=11 mm0.1 Number of folliclesStandard Deviation 0.4
200 IU recFSHNumber of Follicles Categorized by Size on Stimulation Day 1>=15 mm0.0 Number of folliclesStandard Deviation 0.2
Secondary

Number of Follicles Categorized by Size on Stimulation Day 5

Ovaries were assessed during stimulation by USS, and the mean number of follicles are categorized by their size.

Time frame: On Day 5 of treatment (up to 1 year)

Population: ITT population (consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to) with USS data available on Stimulation Day 5.

ArmMeasureGroupValue (MEAN)Dispersion
150 µg Corifollitropin AlfaNumber of Follicles Categorized by Size on Stimulation Day 5>=11 mm4.4 Number of folliclesStandard Deviation 3.8
150 µg Corifollitropin AlfaNumber of Follicles Categorized by Size on Stimulation Day 5>=15 mm0.3 Number of folliclesStandard Deviation 0.7
150 µg Corifollitropin AlfaNumber of Follicles Categorized by Size on Stimulation Day 5>=17 mm0.1 Number of folliclesStandard Deviation 0.3
200 IU recFSHNumber of Follicles Categorized by Size on Stimulation Day 5>=11 mm4.7 Number of folliclesStandard Deviation 3.9
200 IU recFSHNumber of Follicles Categorized by Size on Stimulation Day 5>=15 mm0.4 Number of folliclesStandard Deviation 0.9
200 IU recFSHNumber of Follicles Categorized by Size on Stimulation Day 5>=17 mm0.1 Number of folliclesStandard Deviation 0.4
Secondary

Number of Follicles Categorized by Size on Stimulation Day 8

Ovaries were assessed during stimulation by USS, and the mean number of follicles are categorized by their size.

Time frame: On Day 8 of treatment (up to 1 year)

Population: ITT population (consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to) with USS data available on Stimulation Day 8.

ArmMeasureGroupValue (MEAN)Dispersion
150 µg Corifollitropin AlfaNumber of Follicles Categorized by Size on Stimulation Day 8>=17 mm2.1 Number of folliclesStandard Deviation 2.9
150 µg Corifollitropin AlfaNumber of Follicles Categorized by Size on Stimulation Day 8>=11 mm12.8 Number of folliclesStandard Deviation 6.7
150 µg Corifollitropin AlfaNumber of Follicles Categorized by Size on Stimulation Day 8>=15 mm5.0 Number of folliclesStandard Deviation 4.6
200 IU recFSHNumber of Follicles Categorized by Size on Stimulation Day 8>=11 mm11.6 Number of folliclesStandard Deviation 6
200 IU recFSHNumber of Follicles Categorized by Size on Stimulation Day 8>=15 mm5.2 Number of folliclesStandard Deviation 4.1
200 IU recFSHNumber of Follicles Categorized by Size on Stimulation Day 8>=17 mm2.5 Number of folliclesStandard Deviation 2.8
Secondary

Number of Follicles Categorized by Size on the Day of hCG

Ovaries were assessed during stimulation by USS, and the mean number of follicles are categorized by their size.

Time frame: Day of HCG treatment (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to. Restricted to participants with hCG injection and with USS data available.

ArmMeasureGroupValue (MEAN)Dispersion
150 µg Corifollitropin AlfaNumber of Follicles Categorized by Size on the Day of hCG>=11 mm16.0 Number of folliclesStandard Deviation 7
150 µg Corifollitropin AlfaNumber of Follicles Categorized by Size on the Day of hCG>=15 mm9.6 Number of folliclesStandard Deviation 4.8
150 µg Corifollitropin AlfaNumber of Follicles Categorized by Size on the Day of hCG>=17 mm5.7 Number of folliclesStandard Deviation 3.2
200 IU recFSHNumber of Follicles Categorized by Size on the Day of hCG>=11 mm13.9 Number of folliclesStandard Deviation 6.1
200 IU recFSHNumber of Follicles Categorized by Size on the Day of hCG>=15 mm8.7 Number of folliclesStandard Deviation 4
200 IU recFSHNumber of Follicles Categorized by Size on the Day of hCG>=17 mm5.6 Number of folliclesStandard Deviation 2.9
Secondary

Number of Oocytes Assessed Prior to Intracytoplasmic Sperm Injection (ICSI)

The number of oocytes used for ICSI was assessed, and categorized based on their quality

Time frame: Up to 36 hours after administration of hCG (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa (Cori Alfa) or recFSH, and grouped according to the treatment they were randomized to. For participants who had ICSI; but also includes 3 participants whose oocytes were assessed, but ICSI was not performed.

ArmMeasureGroupValue (MEAN)Dispersion
150 µg Corifollitropin AlfaNumber of Oocytes Assessed Prior to Intracytoplasmic Sperm Injection (ICSI)Total13.8 Number of oocytesStandard Deviation 7.7
150 µg Corifollitropin AlfaNumber of Oocytes Assessed Prior to Intracytoplasmic Sperm Injection (ICSI)Metaphase I1.1 Number of oocytesStandard Deviation 1.5
150 µg Corifollitropin AlfaNumber of Oocytes Assessed Prior to Intracytoplasmic Sperm Injection (ICSI)Metaphase II10.8 Number of oocytesStandard Deviation 6.5
150 µg Corifollitropin AlfaNumber of Oocytes Assessed Prior to Intracytoplasmic Sperm Injection (ICSI)Germinal vesicles1.4 Number of oocytesStandard Deviation 1.9
200 IU recFSHNumber of Oocytes Assessed Prior to Intracytoplasmic Sperm Injection (ICSI)Germinal vesicles1.7 Number of oocytesStandard Deviation 2.2
200 IU recFSHNumber of Oocytes Assessed Prior to Intracytoplasmic Sperm Injection (ICSI)Total12.2 Number of oocytesStandard Deviation 6.4
200 IU recFSHNumber of Oocytes Assessed Prior to Intracytoplasmic Sperm Injection (ICSI)Metaphase II9.2 Number of oocytesStandard Deviation 5.1
200 IU recFSHNumber of Oocytes Assessed Prior to Intracytoplasmic Sperm Injection (ICSI)Metaphase I0.9 Number of oocytesStandard Deviation 1.3
Secondary

Percentage of Fertilized Oocytes (Fertilization Rate)

The fertilization rate is 100 times the number of fertilized 2 pro-nuclei (2PN) oocytes obtained, divided by the number of oocytes fertilized by IVF or ICSI

Time frame: Up to 18 hours after start of fertilization (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to.Restricted to participants with IVF and/or ICSI.

ArmMeasureValue (MEAN)Dispersion
150 µg Corifollitropin AlfaPercentage of Fertilized Oocytes (Fertilization Rate)66.0 Percentage of fertilized oocytesStandard Deviation 23.5
200 IU recFSHPercentage of Fertilized Oocytes (Fertilization Rate)67.6 Percentage of fertilized oocytesStandard Deviation 22.9
Secondary

Percentage of Gestational Sacs (Implantation Rate)

The implantation rate is 100 times the number of gestational sacs assessed by USS after embryo transfer, divided by the number of embryos transferred.

Time frame: Up to 6 weeks after embryo transfer (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to. Restricted to participants with embryo transfer.

ArmMeasureValue (MEAN)Dispersion
150 µg Corifollitropin AlfaPercentage of Gestational Sacs (Implantation Rate)36.2 Percentage of gestational sacsStandard Deviation 41.6
200 IU recFSHPercentage of Gestational Sacs (Implantation Rate)32.2 Percentage of gestational sacsStandard Deviation 40.1
Secondary

Percentage of Participants With a Biochemical Pregnancy (Pregnancy Rate) Per Attempt

Biochemical pregnancy was assessed by measuring serum or urinary hCG. Per attempt means that if a participant did not reach the stage of pregnancy assessment zero values were imputed. The pregnancy rate is 100 times the number of participants with pregnancies detected, divided by the number of participants assessed.

Time frame: Two weeks after embryo transfer (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to.

ArmMeasureValue (NUMBER)
150 µg Corifollitropin AlfaPercentage of Participants With a Biochemical Pregnancy (Pregnancy Rate) Per Attempt48.1 Percentage of participants
200 IU recFSHPercentage of Participants With a Biochemical Pregnancy (Pregnancy Rate) Per Attempt46.9 Percentage of participants
Secondary

Percentage of Participants With a Biochemical Pregnancy (Pregnancy Rate) Per Embryo Transfer

Biochemical pregnancy was assessed for participants who had embryo transfer by measuring serum or urinary hCG. The pregnancy rate is 100 times the number of participants with pregnancies detected, divided by the number of participants assessed.

Time frame: Two weeks after embryo transfer (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to. Restricted to participants with embryo transfer.

ArmMeasureValue (NUMBER)
150 µg Corifollitropin AlfaPercentage of Participants With a Biochemical Pregnancy (Pregnancy Rate) Per Embryo Transfer54.2 Percentage of participants
200 IU recFSHPercentage of Participants With a Biochemical Pregnancy (Pregnancy Rate) Per Embryo Transfer50.0 Percentage of participants
Secondary

Percentage of Participants With a Miscarriage (Miscarriage Rate) Per Clinical Pregnancy

The miscarriage rate is 100 times the number of miscarriages, divided by the number of clinical pregnancies assessed by USS. A clinical pregnancy is the presence of at least one gestational sac or confirmed by live birth.

Time frame: Up to day of miscarriage (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to. Restricted to participants with a clinical pregnancy.

ArmMeasureValue (NUMBER)
150 µg Corifollitropin AlfaPercentage of Participants With a Miscarriage (Miscarriage Rate) Per Clinical Pregnancy8.4 Percentage of participants
200 IU recFSHPercentage of Participants With a Miscarriage (Miscarriage Rate) Per Clinical Pregnancy6.8 Percentage of participants
Secondary

Percentage of Participants With a Miscarriage (Miscarriage Rate) Per Vital Pregnancy

The miscarriage rate is 100 times the number of miscarriages, divided by the number of vital pregnancies assessed by USS. A vital pregnancy is the presence of at least one fetus with heart activity.

Time frame: Up to day of miscarriage (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa or recFSH, and grouped according to the treatment they were randomized to. Restricted to participants with a vital pregnancy.

ArmMeasureValue (NUMBER)
150 µg Corifollitropin AlfaPercentage of Participants With a Miscarriage (Miscarriage Rate) Per Vital Pregnancy2.3 Percentage of participants
200 IU recFSHPercentage of Participants With a Miscarriage (Miscarriage Rate) Per Vital Pregnancy2.0 Percentage of participants
Secondary

Serum Estradiol (E2) Levels During Stimulation

Mean serum E2 levels are presented over one COS cycle: from Day 1 (Pre-dose) up to the day of hCG treatment.

Time frame: Up to day of hCG treatment (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa (Cori Alfa) or recFSH, and grouped according to the treatment they were randomized to. Restricted to participants who had E2 data available.

ArmMeasureGroupValue (MEAN)Dispersion
150 µg Corifollitropin AlfaSerum Estradiol (E2) Levels During StimulationDay 1 (Pre-dose) (Cori. Alfa N=732; recFSH N=724)126.13 pmol/LStandard Deviation 39.17
150 µg Corifollitropin AlfaSerum Estradiol (E2) Levels During StimulationDay 5 (Cori. Alfa N=725; recFSH N=722)1859.39 pmol/LStandard Deviation 1224.78
150 µg Corifollitropin AlfaSerum Estradiol (E2) Levels During StimulationDay 8 (Cori. Alfa N=708; recFSH N=678)3700.92 pmol/LStandard Deviation 2837.41
150 µg Corifollitropin AlfaSerum Estradiol (E2) Levels During StimulationDay of hCG (Cori. Alfa N=698; recFSH N=708)5486.67 pmol/LStandard Deviation 3461.92
200 IU recFSHSerum Estradiol (E2) Levels During StimulationDay of hCG (Cori. Alfa N=698; recFSH N=708)5154.88 pmol/LStandard Deviation 2999.48
200 IU recFSHSerum Estradiol (E2) Levels During StimulationDay 1 (Pre-dose) (Cori. Alfa N=732; recFSH N=724)124.79 pmol/LStandard Deviation 37.11
200 IU recFSHSerum Estradiol (E2) Levels During StimulationDay 8 (Cori. Alfa N=708; recFSH N=678)3750.96 pmol/LStandard Deviation 2600.03
200 IU recFSHSerum Estradiol (E2) Levels During StimulationDay 5 (Cori. Alfa N=725; recFSH N=722)1392.97 pmol/LStandard Deviation 895.66
Secondary

Serum FSH Levels During Stimulation

Mean serum FSH are presented over one Controlled Ovarian Stimulation (COS) cycle: from Day 1 (Pre-dose) up to the day of hCG treatment.

Time frame: Up to day of hCG treatment (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa (Cori Alfa) or recFSH, and grouped according to the treatment they were randomized to. Restricted to participants who had FSH data available.

ArmMeasureGroupValue (MEAN)Dispersion
150 µg Corifollitropin AlfaSerum FSH Levels During StimulationDay 1 (Pre-dose) (Cori. Alfa N=732; recFSH N=724)6.70 IU/LStandard Deviation 2.05
150 µg Corifollitropin AlfaSerum FSH Levels During StimulationDay 5 (Cori. Alfa N=725; recFSH N=722)23.49 IU/LStandard Deviation 6.22
150 µg Corifollitropin AlfaSerum FSH Levels During StimulationDay 8 (Cori. Alfa N=708; recFSH N=678)11.76 IU/LStandard Deviation 3.18
150 µg Corifollitropin AlfaSerum FSH Levels During StimulationDay of hCG (Cori. Alfa N=698; recFSH N=708)12.54 IU/LStandard Deviation 3.35
200 IU recFSHSerum FSH Levels During StimulationDay of hCG (Cori. Alfa N=698; recFSH N=708)11.59 IU/LStandard Deviation 2.8
200 IU recFSHSerum FSH Levels During StimulationDay 1 (Pre-dose) (Cori. Alfa N=732; recFSH N=724)6.60 IU/LStandard Deviation 1.86
200 IU recFSHSerum FSH Levels During StimulationDay 8 (Cori. Alfa N=708; recFSH N=678)11.59 IU/LStandard Deviation 2.65
200 IU recFSHSerum FSH Levels During StimulationDay 5 (Cori. Alfa N=725; recFSH N=722)11.61 IU/LStandard Deviation 3.4
Secondary

Serum Inhibin-B Levels During Stimulation

Mean serum Inhibin-B levels are presented over one COS cycle: from Day 1 (Pre-dose) up to day of hCG treatment

Time frame: Up to day of hCG treatment (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa (Cori Alfa) or recFSH, and grouped according to the treatment they were randomized to. Restricted to participants who had Inhibin-B data available.

ArmMeasureGroupValue (MEAN)Dispersion
150 µg Corifollitropin AlfaSerum Inhibin-B Levels During StimulationDay 1 (Pre-dose) (Cori. Alfa N=736; recFSH N=724)52.78 pg/mLStandard Deviation 29.29
150 µg Corifollitropin AlfaSerum Inhibin-B Levels During StimulationDay 5 (Cori. Alfa N=731; recFSH N=724)488.54 pg/mLStandard Deviation 380.13
150 µg Corifollitropin AlfaSerum Inhibin-B Levels During StimulationDay 8 (Cori. Alfa N=713; recFSH N=679)578.21 pg/mLStandard Deviation 508.4
150 µg Corifollitropin AlfaSerum Inhibin-B Levels During StimulationDay of hCG (Cori. Alfa N=704; recFSH N=710)608.35 pg/mLStandard Deviation 489.52
200 IU recFSHSerum Inhibin-B Levels During StimulationDay of hCG (Cori. Alfa N=704; recFSH N=710)612.19 pg/mLStandard Deviation 435.26
200 IU recFSHSerum Inhibin-B Levels During StimulationDay 1 (Pre-dose) (Cori. Alfa N=736; recFSH N=724)52.95 pg/mLStandard Deviation 27.02
200 IU recFSHSerum Inhibin-B Levels During StimulationDay 8 (Cori. Alfa N=713; recFSH N=679)642.27 pg/mLStandard Deviation 464.05
200 IU recFSHSerum Inhibin-B Levels During StimulationDay 5 (Cori. Alfa N=731; recFSH N=724)493.86 pg/mLStandard Deviation 329.71
Secondary

Serum Luteinizing Hormone (LH) Levels During Stimulation

Mean serum LH levels are presented over one COS cycle: from Day 1 (Pre-dose) up to the day of hCG treatment.

Time frame: Up to day of hCG treatment (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa (Cori Alfa) or recFSH, and grouped according to the treatment they were randomized to. Restricted to participants who had LH data available.

ArmMeasureGroupValue (MEAN)Dispersion
150 µg Corifollitropin AlfaSerum Luteinizing Hormone (LH) Levels During StimulationDay 1 (Pre-dose) (Cori. Alfa N=732; recFSH N=724)4.80 IU/LStandard Deviation 2.02
150 µg Corifollitropin AlfaSerum Luteinizing Hormone (LH) Levels During StimulationDay 5 (Cori. Alfa N=725; recFSH N=722)3.62 IU/LStandard Deviation 4.6
150 µg Corifollitropin AlfaSerum Luteinizing Hormone (LH) Levels During StimulationDay 8 (Cori. Alfa N=708; recFSH N=678)1.29 IU/LStandard Deviation 1.8
150 µg Corifollitropin AlfaSerum Luteinizing Hormone (LH) Levels During StimulationDay of hCG (Cori. Alfa N=698; recFSH N=708)1.38 IU/LStandard Deviation 1.79
200 IU recFSHSerum Luteinizing Hormone (LH) Levels During StimulationDay of hCG (Cori. Alfa N=698; recFSH N=708)1.86 IU/LStandard Deviation 1.63
200 IU recFSHSerum Luteinizing Hormone (LH) Levels During StimulationDay 1 (Pre-dose) (Cori. Alfa N=732; recFSH N=724)4.67 IU/LStandard Deviation 1.82
200 IU recFSHSerum Luteinizing Hormone (LH) Levels During StimulationDay 8 (Cori. Alfa N=708; recFSH N=678)2.05 IU/LStandard Deviation 1.8
200 IU recFSHSerum Luteinizing Hormone (LH) Levels During StimulationDay 5 (Cori. Alfa N=725; recFSH N=722)2.23 IU/LStandard Deviation 2.92
Secondary

Serum Progesterone (P) Levels During Stimulation

Mean serum P levels are presented over one COS cycle: from Day 1 (Pre-dose) up to day of hCG treatment

Time frame: Up to day of hCG treatment (up to 1 year)

Population: ITT population consisting of all randomized participants who were treated with Corifollitropin Alfa (Cori Alfa) or recFSH, and grouped according to the treatment they were randomized to. Restricted to participants who had P data available.

ArmMeasureGroupValue (MEAN)Dispersion
150 µg Corifollitropin AlfaSerum Progesterone (P) Levels During StimulationDay 1 (Pre-dose) (Cori. Alfa N=732; recFSH N=724)1.80 nmol/mLStandard Deviation 1.28
150 µg Corifollitropin AlfaSerum Progesterone (P) Levels During StimulationDay 5 (Cori. Alfa N=725; recFSH N=722)2.13 nmol/mLStandard Deviation 1.97
150 µg Corifollitropin AlfaSerum Progesterone (P) Levels During StimulationDay 8 (Cori. Alfa N=708; recFSH N=678)1.95 nmol/mLStandard Deviation 1.06
150 µg Corifollitropin AlfaSerum Progesterone (P) Levels During StimulationDay of hCG (Cori. Alfa N=698; recFSH N=708)3.20 nmol/mLStandard Deviation 4.88
200 IU recFSHSerum Progesterone (P) Levels During StimulationDay of hCG (Cori. Alfa N=698; recFSH N=708)3.16 nmol/mLStandard Deviation 1.47
200 IU recFSHSerum Progesterone (P) Levels During StimulationDay 1 (Pre-dose) (Cori. Alfa N=732; recFSH N=724)1.85 nmol/mLStandard Deviation 1.42
200 IU recFSHSerum Progesterone (P) Levels During StimulationDay 8 (Cori. Alfa N=708; recFSH N=678)2.64 nmol/mLStandard Deviation 1.21
200 IU recFSHSerum Progesterone (P) Levels During StimulationDay 5 (Cori. Alfa N=725; recFSH N=722)1.61 nmol/mLStandard Deviation 0.87

Source: ClinicalTrials.gov · Data processed: Mar 23, 2026