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Evidence-based Stimulation Trial With Human rFSH in Europe and Rest of World 2

A Controlled, Assessor-blind, Parallel Groups, Multicentre, Multinational Trial Evaluating the Immunogenicity of FE 999049 in Repeated Cycles of Controlled Ovarian Stimulation in Women Undergoing an Assisted Reproductive Technology Programme

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01956123
Acronym
ESTHER-2
Enrollment
513
Registered
2013-10-08
Start date
2014-03-26
Completion date
2017-01-03
Last updated
2023-09-06

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

Conditions

Infertility

Brief summary

This trial investigates the immunogenicity of FE 999049 in repeated cycles.

Interventions

Sponsors

Ferring Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 40 Years
Healthy volunteers
No

Inclusion criteria

* Informed Consent Documents signed prior to screening evaluations related to this protocol * Participation in the pivotal efficacy trial (trial 000004/ESTHER-1) * Anti-FSH antibody results from baseline and at least one post-dosing assessment in the previous cycle(s) available. * Having undergone the oocyte retrieval procedure, or having had cycle cancellation prior to oocyte retrieval due to poor ovarian response or excessive ovarian response, in the previous cycle(s). * Failure to achieve ongoing pregnancy in the previous cycle(s).

Exclusion criteria

* Non-compliance to protocol compliance in the previous cycle(s). * Having undergone any stimulation with gonadotropins since the end-of-trial / end-of-cycle visit in the previous cycle * One or more follicles ≥10 mm observed on the transvaginal ultrasound prior to start of dosing on stimulation day 1 * Severe OHSS in a previous cycle. * Any clinically relevant change to any of the eligibility criteria in the previous cycle(s). * Clinically relevant medical history since the previous cycle which precludes gonadotropin stimulation or is associated with a reduced chance of pregnancy.

Design outcomes

Primary

MeasureTime frameDescription
Proportion (Percentage) of Subjects With Treatment-induced Anti-Follicle-Stimulating Hormone (FSH) Antibodies After up to Two Repeated Controlled Ovarian Stimulation CyclesStimulation day 1, 7-10 days after last FE 999049 or GONAL-F dose and 21-28 days after last FE 999049 or GONAL-F doseThe proportion (percentage) of participants with at least one treatment-induced anti-FSH antibody response at any time point is presented. The cumulative incidences in COS cycle 2 and COS cycle 3 divided by participants in COS cycle 2 are presented. Participants with observations in both cycles are only counted once.

Secondary

MeasureTime frameDescription
Proportion (Percentage) of Subjects With Treatment-induced Anti-FSH Antibodies With Neutralising Capacity After up to Two Repeated Controlled Ovarian Stimulation CyclesStimulation day 1, 7-10 days after last FE 999049 or GONAL-F dose and 21-28 days after last FE 999049 or GONAL-F doseThe proportion (percentage) of participants with treatment-induced anti-FSH antibodies with neutralising capacity at any time point is presented. The cumulative incidences in COS cycle 2 and COS cycle 3 divided by participants in COS cycle 2 are presented. Participants with observations in both cycles are only counted once.
Proportion (Percentage) of Subjects With Treatment-induced Anti-FSH Antibodies, Overall as Well as With Neutralising Capacity, After One and After Two Repeated Controlled Ovarian Stimulation CyclesStimulation day 1, 7-10 days after last FE 999049 or GONAL-F dose and 21-28 days after last FE 999049 or GONAL-F doseThe proportion (percentage) of participants with treatment-induced anti-FSH antibodies, overall as well as with neutralising capacity, after one and after two repeated COS cycles is presented.
Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation Cycle≤9 days after triggering of final follicular maturation.The proportion (percentage) of participants with early OHSS, early OHSS of moderate or severe grade, preventive interventions for early OHSS, early OHSS and/or preventive interventions for early OHSS, and early OHSS of moderate or severe grade and/or preventive interventions for early OHSS are presented.
Proportion (Percentage) of Subject With Cycle Cancellation Due to Poor Ovarian Response or Excessive Ovarian Response for Each Controlled Ovarian Stimulation CycleEnd-of-stimulation (up to 20 stimulation days)Proportion (percentage) of participants with cycle cancellation due to poor ovarian response, excessive ovarian response, and triggering with gonadotropin-releasing hormone (GnRH) agonist are presented.
Implantation Rate for Each Controlled Ovarian Stimulation Cycle5-6 weeks after blastocyst transferImplantation rate was defined as the number of gestational sacs 5-6 weeks after transfer divided by number of blastocysts transferred.
Vital Pregnancy Rate for Each Controlled Ovarian Stimulation Cycle5-6 weeks after blastocyst transferVital pregnancy was defined as at least one intrauterine gestational sac with fetal heart beat 5-6 weeks after blastocyst transfer.
Ongoing Implantation Rate for Each Controlled Ovarian Stimulation Cycle10-11 weeks after blastocyst transferOngoing implantation rate was defined as the number of intrauterine viable fetuses 10-11 weeks after transfer divided by number of blastocysts transferred.
Frequency of Injection Site Reactions (Redness, Pain, Itching, Swelling and Bruising) Assessed by the Subject During the Stimulation Period for Each Controlled Ovarian Stimulation CycleEnd-of-stimulation (up to 20 stimulation days)Participants self-assessed injection site reactions (redness, itching, pain, swelling and bruising) immediately, 30 minutes and 24 hours after each injection. The injection site reactions were assessed as none, mild, moderate and severe. The frequency of injection site reactions (mild, moderate or severe) based on all assessment performed is presented.
Proportion (Percentage) of Subjects With Late OHSS (Including OHSS of Moderate/Severe Grade) for Each Controlled Ovarian Stimulation Cycle>9 days after triggering of final follicular maturationLate OHSS was defined as OHSS with onset \>9 days after triggering of final follicular maturation.
Technical Malfunctions of the Administration Pen for Each Controlled Ovarian Stimulation CycleEnd-of-stimulation (up to 20 stimulation days)Incidences of confirmed technical malfunction of administration pen are presented.
Ongoing Pregnancy Rate for Each Controlled Ovarian Stimulation Cycle10-11 weeks after blastocyst transferOngoing pregnancy rate was defined as at least one intrauterine viable fetus 10-11 weeks after blastocyst transfer.

Countries

Belgium, Brazil, Canada, Czechia, Denmark, France, Italy, Poland, Russia, Spain, United Kingdom

Participant flow

Recruitment details

A total of 32 investigational sites included participants to the trial : 3 in Belgium, 3 in Brazil, 3 in Canada, 3 in the Czech Republic, 2 in Denmark, 2 in Italy, 2 in Poland, 2 in Russia, 10 in Spain and 2 in United Kingdom.

Pre-assignment details

Participants who participated in Trial 000004 (NCT01956110) (controlled ovarian stimulation \[COS\] cycle 1) & failed to achieve ongoing pregnancy were eligible for the trial. For COS cycle 2, 520 participants were screened and 513 enrolled. For COS cycle 3, 190 participants were screened and 189 enrolled. Participants were exposed to the same IMP as in COS cycle 1.

Participants by arm

ArmCount
FE 999049 (COS Cycle 2)
FE 999049 was administered as single daily subcutaneous injections in the abdomen. The dose was determined based on the ovarian response in COS cycle 1. The daily FE 999049 dose was fixed throughout the stimulation period and maximum allowed daily dose was 18 μg. Dosing continued until the criterion for triggering of final follicular maturation was met. Participants could be treated for a maximum of 20 days.
252
GONAL-F (COS Cycle 2)
GONAL-F was administered as single daily subcutaneous injections in the abdomen. The starting dose was determined based on the ovarian response in COS cycle 1. The GONAL-F starting dose was fixed for the first 5 days after which it could be adjusted by 75 IU based on the individual response. The maximum allowed daily dose was 450 IU. Dosing continued until the criterion for triggering of final follicular maturation was met. Participants could be treated for a maximum of 20 days.
261
Total513

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
COS Cycle 2Adverse Event3400
COS Cycle 2Personal Reasons2000
COS Cycle 2Protocol Violation8300
COS Cycle 2Withdrawal by Subject1000
COS Cycle 3Adverse Event0030
COS Cycle 3Personal Reasons0010
COS Cycle 3Protocol Violation0021
COS Cycle 3Withdrawal by Subject0001

Baseline characteristics

CharacteristicFE 999049 (COS Cycle 2)GONAL-F (COS Cycle 2)Total
Age, Categorical
COS cycle 2
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
COS cycle 2
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
COS cycle 2
Between 18 and 65 years
252 Participants261 Participants513 Participants
Age, Categorical
COS cycle 3
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
COS cycle 3
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
COS cycle 3
Between 18 and 65 years
95 Participants93 Participants188 Participants
Sex: Female, Male
COS cycle 2
Female
252 Participants261 Participants513 Participants
Sex: Female, Male
COS cycle 2
Male
0 Participants0 Participants0 Participants
Sex: Female, Male
COS cycle 3
Female
95 Participants93 Participants188 Participants
Sex: Female, Male
COS cycle 3
Male
0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 2520 / 2610 / 950 / 93
other
Total, other adverse events
70 / 25277 / 26126 / 9534 / 93
serious
Total, serious adverse events
4 / 2524 / 2610 / 951 / 93

Outcome results

Primary

Proportion (Percentage) of Subjects With Treatment-induced Anti-Follicle-Stimulating Hormone (FSH) Antibodies After up to Two Repeated Controlled Ovarian Stimulation Cycles

The proportion (percentage) of participants with at least one treatment-induced anti-FSH antibody response at any time point is presented. The cumulative incidences in COS cycle 2 and COS cycle 3 divided by participants in COS cycle 2 are presented. Participants with observations in both cycles are only counted once.

Time frame: Stimulation day 1, 7-10 days after last FE 999049 or GONAL-F dose and 21-28 days after last FE 999049 or GONAL-F dose

Population: Safety analysis set (all exposed participants).

ArmMeasureValue (NUMBER)
FE 999049 (COS Cycle 2)Proportion (Percentage) of Subjects With Treatment-induced Anti-Follicle-Stimulating Hormone (FSH) Antibodies After up to Two Repeated Controlled Ovarian Stimulation Cycles0.79 Percentage of participants
GONAL-F (COS Cycle 2)Proportion (Percentage) of Subjects With Treatment-induced Anti-Follicle-Stimulating Hormone (FSH) Antibodies After up to Two Repeated Controlled Ovarian Stimulation Cycles0.38 Percentage of participants
Secondary

Frequency of Injection Site Reactions (Redness, Pain, Itching, Swelling and Bruising) Assessed by the Subject During the Stimulation Period for Each Controlled Ovarian Stimulation Cycle

Participants self-assessed injection site reactions (redness, itching, pain, swelling and bruising) immediately, 30 minutes and 24 hours after each injection. The injection site reactions were assessed as none, mild, moderate and severe. The frequency of injection site reactions (mild, moderate or severe) based on all assessment performed is presented.

Time frame: End-of-stimulation (up to 20 stimulation days)

Population: Safety analysis set (all exposed participants).

ArmMeasureValue (NUMBER)
FE 999049 (COS Cycle 2)Frequency of Injection Site Reactions (Redness, Pain, Itching, Swelling and Bruising) Assessed by the Subject During the Stimulation Period for Each Controlled Ovarian Stimulation Cycle3.0 Percentage of events
GONAL-F (COS Cycle 2)Frequency of Injection Site Reactions (Redness, Pain, Itching, Swelling and Bruising) Assessed by the Subject During the Stimulation Period for Each Controlled Ovarian Stimulation Cycle2.4 Percentage of events
FE 999049 (COS Cycle 3)Frequency of Injection Site Reactions (Redness, Pain, Itching, Swelling and Bruising) Assessed by the Subject During the Stimulation Period for Each Controlled Ovarian Stimulation Cycle2.8 Percentage of events
GONAL-F (COS Cycle 3)Frequency of Injection Site Reactions (Redness, Pain, Itching, Swelling and Bruising) Assessed by the Subject During the Stimulation Period for Each Controlled Ovarian Stimulation Cycle2.3 Percentage of events
Secondary

Implantation Rate for Each Controlled Ovarian Stimulation Cycle

Implantation rate was defined as the number of gestational sacs 5-6 weeks after transfer divided by number of blastocysts transferred.

Time frame: 5-6 weeks after blastocyst transfer

Population: Participants with blastocyst transfer. In COS cycle 2, a total of 254 and 271 blastocysts were transferred in the FE 999049 and GONAL-F groups, respectively. In COS cycle 3, a total of 132 and 121 blastocysts were transferred in the FE 999049 and GONAL-F groups, respectively.

ArmMeasureValue (NUMBER)
FE 999049 (COS Cycle 2)Implantation Rate for Each Controlled Ovarian Stimulation Cycle34.6 Percentage
GONAL-F (COS Cycle 2)Implantation Rate for Each Controlled Ovarian Stimulation Cycle30.6 Percentage
FE 999049 (COS Cycle 3)Implantation Rate for Each Controlled Ovarian Stimulation Cycle28.8 Percentage
GONAL-F (COS Cycle 3)Implantation Rate for Each Controlled Ovarian Stimulation Cycle32.2 Percentage
Secondary

Ongoing Implantation Rate for Each Controlled Ovarian Stimulation Cycle

Ongoing implantation rate was defined as the number of intrauterine viable fetuses 10-11 weeks after transfer divided by number of blastocysts transferred.

Time frame: 10-11 weeks after blastocyst transfer

Population: Participants with blastocyst transfer. In COS cycle 2, a total of 254 and 271 blastocysts were transferred in the FE 999049 and GONAL-F groups, respectively. In COS cycle 3, a total of 132 and 121 blastocysts were transferred in the FE 999049 and GONAL-F groups, respectively.

ArmMeasureValue (NUMBER)
FE 999049 (COS Cycle 2)Ongoing Implantation Rate for Each Controlled Ovarian Stimulation Cycle28.7 Percentage
GONAL-F (COS Cycle 2)Ongoing Implantation Rate for Each Controlled Ovarian Stimulation Cycle25.5 Percentage
FE 999049 (COS Cycle 3)Ongoing Implantation Rate for Each Controlled Ovarian Stimulation Cycle25.0 Percentage
GONAL-F (COS Cycle 3)Ongoing Implantation Rate for Each Controlled Ovarian Stimulation Cycle28.9 Percentage
Secondary

Ongoing Pregnancy Rate for Each Controlled Ovarian Stimulation Cycle

Ongoing pregnancy rate was defined as at least one intrauterine viable fetus 10-11 weeks after blastocyst transfer.

Time frame: 10-11 weeks after blastocyst transfer

Population: mITT analysis set (all exposed participants). This is equivalent to FAS.

ArmMeasureValue (NUMBER)
FE 999049 (COS Cycle 2)Ongoing Pregnancy Rate for Each Controlled Ovarian Stimulation Cycle27.8 Percentage of participants
GONAL-F (COS Cycle 2)Ongoing Pregnancy Rate for Each Controlled Ovarian Stimulation Cycle25.7 Percentage of participants
FE 999049 (COS Cycle 3)Ongoing Pregnancy Rate for Each Controlled Ovarian Stimulation Cycle27.4 Percentage of participants
GONAL-F (COS Cycle 3)Ongoing Pregnancy Rate for Each Controlled Ovarian Stimulation Cycle28 Percentage of participants
Secondary

Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation Cycle

The proportion (percentage) of participants with early OHSS, early OHSS of moderate or severe grade, preventive interventions for early OHSS, early OHSS and/or preventive interventions for early OHSS, and early OHSS of moderate or severe grade and/or preventive interventions for early OHSS are presented.

Time frame: ≤9 days after triggering of final follicular maturation.

Population: Modified intention-to-treat (mITT) analysis set (all exposed participants). This is equivalent to the full analysis set (FAS).

ArmMeasureGroupValue (NUMBER)
FE 999049 (COS Cycle 2)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleEarly OHSS (any grade) / preventive2.0 Percentage of participants
FE 999049 (COS Cycle 2)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleEarly OHSS (moderate/severe)0.0 Percentage of participants
FE 999049 (COS Cycle 2)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleEarly OHSS (moderate/severe) / preventive1.6 Percentage of participants
FE 999049 (COS Cycle 2)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleAny preventive intervention1.6 Percentage of participants
FE 999049 (COS Cycle 2)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleEarly OHSS (any grade)0.8 Percentage of participants
GONAL-F (COS Cycle 2)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleAny preventive intervention1.9 Percentage of participants
GONAL-F (COS Cycle 2)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleEarly OHSS (any grade) / preventive3.8 Percentage of participants
GONAL-F (COS Cycle 2)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleEarly OHSS (moderate/severe) / preventive3.8 Percentage of participants
GONAL-F (COS Cycle 2)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleEarly OHSS (moderate/severe)1.9 Percentage of participants
GONAL-F (COS Cycle 2)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleEarly OHSS (any grade)2.3 Percentage of participants
FE 999049 (COS Cycle 3)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleAny preventive intervention0.0 Percentage of participants
FE 999049 (COS Cycle 3)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleEarly OHSS (any grade)1.1 Percentage of participants
FE 999049 (COS Cycle 3)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleEarly OHSS (moderate/severe)0.0 Percentage of participants
FE 999049 (COS Cycle 3)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleEarly OHSS (any grade) / preventive1.1 Percentage of participants
FE 999049 (COS Cycle 3)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleEarly OHSS (moderate/severe) / preventive0.0 Percentage of participants
GONAL-F (COS Cycle 3)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleEarly OHSS (any grade) / preventive1.1 Percentage of participants
GONAL-F (COS Cycle 3)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleEarly OHSS (moderate/severe)0.0 Percentage of participants
GONAL-F (COS Cycle 3)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleEarly OHSS (any grade)0.0 Percentage of participants
GONAL-F (COS Cycle 3)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleAny preventive intervention1.1 Percentage of participants
GONAL-F (COS Cycle 3)Proportion (Percentage) of Subjects With Early Ovarian Hyperstimulation Syndrome (OHSS) (Including OHSS of Moderate/Severe Grade) and/or Preventive Interventions for Early OHSS for Each Controlled Ovarian Stimulation CycleEarly OHSS (moderate/severe) / preventive1.1 Percentage of participants
Secondary

Proportion (Percentage) of Subjects With Late OHSS (Including OHSS of Moderate/Severe Grade) for Each Controlled Ovarian Stimulation Cycle

Late OHSS was defined as OHSS with onset \>9 days after triggering of final follicular maturation.

Time frame: >9 days after triggering of final follicular maturation

Population: Safety analysis set (all exposed participants).

ArmMeasureGroupValue (NUMBER)
FE 999049 (COS Cycle 2)Proportion (Percentage) of Subjects With Late OHSS (Including OHSS of Moderate/Severe Grade) for Each Controlled Ovarian Stimulation CycleLate OHSS (any grade)0.4 Percentage of participants
FE 999049 (COS Cycle 2)Proportion (Percentage) of Subjects With Late OHSS (Including OHSS of Moderate/Severe Grade) for Each Controlled Ovarian Stimulation CycleLate OHSS (moderate/severe)0.0 Percentage of participants
GONAL-F (COS Cycle 2)Proportion (Percentage) of Subjects With Late OHSS (Including OHSS of Moderate/Severe Grade) for Each Controlled Ovarian Stimulation CycleLate OHSS (moderate/severe)0.8 Percentage of participants
GONAL-F (COS Cycle 2)Proportion (Percentage) of Subjects With Late OHSS (Including OHSS of Moderate/Severe Grade) for Each Controlled Ovarian Stimulation CycleLate OHSS (any grade)0.8 Percentage of participants
FE 999049 (COS Cycle 3)Proportion (Percentage) of Subjects With Late OHSS (Including OHSS of Moderate/Severe Grade) for Each Controlled Ovarian Stimulation CycleLate OHSS (any grade)1.1 Percentage of participants
FE 999049 (COS Cycle 3)Proportion (Percentage) of Subjects With Late OHSS (Including OHSS of Moderate/Severe Grade) for Each Controlled Ovarian Stimulation CycleLate OHSS (moderate/severe)0.0 Percentage of participants
GONAL-F (COS Cycle 3)Proportion (Percentage) of Subjects With Late OHSS (Including OHSS of Moderate/Severe Grade) for Each Controlled Ovarian Stimulation CycleLate OHSS (any grade)1.1 Percentage of participants
GONAL-F (COS Cycle 3)Proportion (Percentage) of Subjects With Late OHSS (Including OHSS of Moderate/Severe Grade) for Each Controlled Ovarian Stimulation CycleLate OHSS (moderate/severe)1.1 Percentage of participants
Secondary

Proportion (Percentage) of Subjects With Treatment-induced Anti-FSH Antibodies, Overall as Well as With Neutralising Capacity, After One and After Two Repeated Controlled Ovarian Stimulation Cycles

The proportion (percentage) of participants with treatment-induced anti-FSH antibodies, overall as well as with neutralising capacity, after one and after two repeated COS cycles is presented.

Time frame: Stimulation day 1, 7-10 days after last FE 999049 or GONAL-F dose and 21-28 days after last FE 999049 or GONAL-F dose

Population: Safety analysis set (all exposed participants).

ArmMeasureGroupValue (NUMBER)
FE 999049 (COS Cycle 2)Proportion (Percentage) of Subjects With Treatment-induced Anti-FSH Antibodies, Overall as Well as With Neutralising Capacity, After One and After Two Repeated Controlled Ovarian Stimulation CyclesTreatment-induced anti-FSH antibodies0.79 Percentage of participants
FE 999049 (COS Cycle 2)Proportion (Percentage) of Subjects With Treatment-induced Anti-FSH Antibodies, Overall as Well as With Neutralising Capacity, After One and After Two Repeated Controlled Ovarian Stimulation CyclesAntibodies with neutralising capacity0.00 Percentage of participants
GONAL-F (COS Cycle 2)Proportion (Percentage) of Subjects With Treatment-induced Anti-FSH Antibodies, Overall as Well as With Neutralising Capacity, After One and After Two Repeated Controlled Ovarian Stimulation CyclesAntibodies with neutralising capacity0.00 Percentage of participants
GONAL-F (COS Cycle 2)Proportion (Percentage) of Subjects With Treatment-induced Anti-FSH Antibodies, Overall as Well as With Neutralising Capacity, After One and After Two Repeated Controlled Ovarian Stimulation CyclesTreatment-induced anti-FSH antibodies0.38 Percentage of participants
FE 999049 (COS Cycle 3)Proportion (Percentage) of Subjects With Treatment-induced Anti-FSH Antibodies, Overall as Well as With Neutralising Capacity, After One and After Two Repeated Controlled Ovarian Stimulation CyclesTreatment-induced anti-FSH antibodies1.05 Percentage of participants
FE 999049 (COS Cycle 3)Proportion (Percentage) of Subjects With Treatment-induced Anti-FSH Antibodies, Overall as Well as With Neutralising Capacity, After One and After Two Repeated Controlled Ovarian Stimulation CyclesAntibodies with neutralising capacity0.00 Percentage of participants
GONAL-F (COS Cycle 3)Proportion (Percentage) of Subjects With Treatment-induced Anti-FSH Antibodies, Overall as Well as With Neutralising Capacity, After One and After Two Repeated Controlled Ovarian Stimulation CyclesTreatment-induced anti-FSH antibodies1.08 Percentage of participants
GONAL-F (COS Cycle 3)Proportion (Percentage) of Subjects With Treatment-induced Anti-FSH Antibodies, Overall as Well as With Neutralising Capacity, After One and After Two Repeated Controlled Ovarian Stimulation CyclesAntibodies with neutralising capacity0.00 Percentage of participants
Secondary

Proportion (Percentage) of Subjects With Treatment-induced Anti-FSH Antibodies With Neutralising Capacity After up to Two Repeated Controlled Ovarian Stimulation Cycles

The proportion (percentage) of participants with treatment-induced anti-FSH antibodies with neutralising capacity at any time point is presented. The cumulative incidences in COS cycle 2 and COS cycle 3 divided by participants in COS cycle 2 are presented. Participants with observations in both cycles are only counted once.

Time frame: Stimulation day 1, 7-10 days after last FE 999049 or GONAL-F dose and 21-28 days after last FE 999049 or GONAL-F dose

Population: Safety analysis set (all exposed participants).

ArmMeasureValue (NUMBER)
FE 999049 (COS Cycle 2)Proportion (Percentage) of Subjects With Treatment-induced Anti-FSH Antibodies With Neutralising Capacity After up to Two Repeated Controlled Ovarian Stimulation Cycles0.00 Percentage of participants
GONAL-F (COS Cycle 2)Proportion (Percentage) of Subjects With Treatment-induced Anti-FSH Antibodies With Neutralising Capacity After up to Two Repeated Controlled Ovarian Stimulation Cycles0.00 Percentage of participants
Secondary

Proportion (Percentage) of Subject With Cycle Cancellation Due to Poor Ovarian Response or Excessive Ovarian Response for Each Controlled Ovarian Stimulation Cycle

Proportion (percentage) of participants with cycle cancellation due to poor ovarian response, excessive ovarian response, and triggering with gonadotropin-releasing hormone (GnRH) agonist are presented.

Time frame: End-of-stimulation (up to 20 stimulation days)

Population: mITT analysis set (all exposed participants). This is equivalent to the FAS.

ArmMeasureGroupValue (NUMBER)
FE 999049 (COS Cycle 2)Proportion (Percentage) of Subject With Cycle Cancellation Due to Poor Ovarian Response or Excessive Ovarian Response for Each Controlled Ovarian Stimulation CycleCycle cancelled due to poor ovarian response2.0 Percentage of participants
FE 999049 (COS Cycle 2)Proportion (Percentage) of Subject With Cycle Cancellation Due to Poor Ovarian Response or Excessive Ovarian Response for Each Controlled Ovarian Stimulation CycleTriggering with GnRH agonist0.4 Percentage of participants
FE 999049 (COS Cycle 2)Proportion (Percentage) of Subject With Cycle Cancellation Due to Poor Ovarian Response or Excessive Ovarian Response for Each Controlled Ovarian Stimulation CycleCycle cancelled due to excessive ovarian response0.4 Percentage of participants
GONAL-F (COS Cycle 2)Proportion (Percentage) of Subject With Cycle Cancellation Due to Poor Ovarian Response or Excessive Ovarian Response for Each Controlled Ovarian Stimulation CycleCycle cancelled due to poor ovarian response3.8 Percentage of participants
GONAL-F (COS Cycle 2)Proportion (Percentage) of Subject With Cycle Cancellation Due to Poor Ovarian Response or Excessive Ovarian Response for Each Controlled Ovarian Stimulation CycleTriggering with GnRH agonist0.8 Percentage of participants
GONAL-F (COS Cycle 2)Proportion (Percentage) of Subject With Cycle Cancellation Due to Poor Ovarian Response or Excessive Ovarian Response for Each Controlled Ovarian Stimulation CycleCycle cancelled due to excessive ovarian response0.0 Percentage of participants
FE 999049 (COS Cycle 3)Proportion (Percentage) of Subject With Cycle Cancellation Due to Poor Ovarian Response or Excessive Ovarian Response for Each Controlled Ovarian Stimulation CycleCycle cancelled due to excessive ovarian response0.0 Percentage of participants
FE 999049 (COS Cycle 3)Proportion (Percentage) of Subject With Cycle Cancellation Due to Poor Ovarian Response or Excessive Ovarian Response for Each Controlled Ovarian Stimulation CycleCycle cancelled due to poor ovarian response2.1 Percentage of participants
FE 999049 (COS Cycle 3)Proportion (Percentage) of Subject With Cycle Cancellation Due to Poor Ovarian Response or Excessive Ovarian Response for Each Controlled Ovarian Stimulation CycleTriggering with GnRH agonist0.0 Percentage of participants
GONAL-F (COS Cycle 3)Proportion (Percentage) of Subject With Cycle Cancellation Due to Poor Ovarian Response or Excessive Ovarian Response for Each Controlled Ovarian Stimulation CycleCycle cancelled due to poor ovarian response2.2 Percentage of participants
GONAL-F (COS Cycle 3)Proportion (Percentage) of Subject With Cycle Cancellation Due to Poor Ovarian Response or Excessive Ovarian Response for Each Controlled Ovarian Stimulation CycleTriggering with GnRH agonist1.1 Percentage of participants
GONAL-F (COS Cycle 3)Proportion (Percentage) of Subject With Cycle Cancellation Due to Poor Ovarian Response or Excessive Ovarian Response for Each Controlled Ovarian Stimulation CycleCycle cancelled due to excessive ovarian response0.0 Percentage of participants
Secondary

Technical Malfunctions of the Administration Pen for Each Controlled Ovarian Stimulation Cycle

Incidences of confirmed technical malfunction of administration pen are presented.

Time frame: End-of-stimulation (up to 20 stimulation days)

Population: Safety analysis set (all exposed participants).

ArmMeasureValue (NUMBER)
FE 999049 (COS Cycle 2)Technical Malfunctions of the Administration Pen for Each Controlled Ovarian Stimulation Cycle0.0 Percentage of participants
GONAL-F (COS Cycle 2)Technical Malfunctions of the Administration Pen for Each Controlled Ovarian Stimulation Cycle0.0 Percentage of participants
FE 999049 (COS Cycle 3)Technical Malfunctions of the Administration Pen for Each Controlled Ovarian Stimulation Cycle0.0 Percentage of participants
GONAL-F (COS Cycle 3)Technical Malfunctions of the Administration Pen for Each Controlled Ovarian Stimulation Cycle0.0 Percentage of participants
Secondary

Vital Pregnancy Rate for Each Controlled Ovarian Stimulation Cycle

Vital pregnancy was defined as at least one intrauterine gestational sac with fetal heart beat 5-6 weeks after blastocyst transfer.

Time frame: 5-6 weeks after blastocyst transfer

Population: mITT analysis set (all exposed participants). This is equivalent to the FAS.

ArmMeasureValue (NUMBER)
FE 999049 (COS Cycle 2)Vital Pregnancy Rate for Each Controlled Ovarian Stimulation Cycle29.4 Percentage of participants
GONAL-F (COS Cycle 2)Vital Pregnancy Rate for Each Controlled Ovarian Stimulation Cycle27.2 Percentage of participants
FE 999049 (COS Cycle 3)Vital Pregnancy Rate for Each Controlled Ovarian Stimulation Cycle27.4 Percentage of participants
GONAL-F (COS Cycle 3)Vital Pregnancy Rate for Each Controlled Ovarian Stimulation Cycle29.0 Percentage of participants

Source: ClinicalTrials.gov · Data processed: Mar 4, 2026