Trial Outcomes & Findings for A Randomised Trial Comparing the Ovarian Response of a Starting Dose of Either 10 μg or 15 μg Follitropin Delta (FE 999049) to a Starting Dose of Either 150 IU or 225 IU Follitropin Alfa (GONAL-F) in Conventional Regimens in China (NCT NCT06173869)

NCT ID: NCT06173869

Last Updated: 2026-02-12

Results Overview

Recruitment status

COMPLETED

Study phase

PHASE3

Target enrollment

301 participants

Primary outcome timeframe

On day of oocyte retrieval (up to 22 days after start of stimulation)

Results posted on

2026-02-12

Participant Flow

Participant milestones

Participant milestones
Measure
FE 999049
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Overall Study
STARTED
148
153
Overall Study
COMPLETED
126
131
Overall Study
NOT COMPLETED
22
22

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

A Randomised Trial Comparing the Ovarian Response of a Starting Dose of Either 10 μg or 15 μg Follitropin Delta (FE 999049) to a Starting Dose of Either 150 IU or 225 IU Follitropin Alfa (GONAL-F) in Conventional Regimens in China

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
FE 999049
n=148 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=153 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Total
n=301 Participants
Total of all reporting groups
Race (NIH/OMB)
White
0 Participants
n=41 Participants
0 Participants
n=1581 Participants
0 Participants
n=4626 Participants
Age, Continuous
32.5 Years
STANDARD_DEVIATION 3.6 • n=41 Participants
32.2 Years
STANDARD_DEVIATION 3.8 • n=1581 Participants
32.3 Years
STANDARD_DEVIATION 3.7 • n=4626 Participants
Sex: Female, Male
Female
148 Participants
n=41 Participants
153 Participants
n=1581 Participants
301 Participants
n=4626 Participants
Sex: Female, Male
Male
0 Participants
n=41 Participants
0 Participants
n=1581 Participants
0 Participants
n=4626 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
n=41 Participants
0 Participants
n=1581 Participants
0 Participants
n=4626 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
148 Participants
n=41 Participants
153 Participants
n=1581 Participants
301 Participants
n=4626 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=41 Participants
0 Participants
n=1581 Participants
0 Participants
n=4626 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=41 Participants
0 Participants
n=1581 Participants
0 Participants
n=4626 Participants
Race (NIH/OMB)
Asian
148 Participants
n=41 Participants
153 Participants
n=1581 Participants
301 Participants
n=4626 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=41 Participants
0 Participants
n=1581 Participants
0 Participants
n=4626 Participants
Race (NIH/OMB)
Black or African American
0 Participants
n=41 Participants
0 Participants
n=1581 Participants
0 Participants
n=4626 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=41 Participants
0 Participants
n=1581 Participants
0 Participants
n=4626 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=41 Participants
0 Participants
n=1581 Participants
0 Participants
n=4626 Participants
Region of Enrollment
China
148 participants
n=41 Participants
153 participants
n=1581 Participants
301 participants
n=4626 Participants
Dose Group
Low Starting Dose
47 Participants
n=41 Participants
51 Participants
n=1581 Participants
98 Participants
n=4626 Participants
Dose Group
High Starting Dose
101 Participants
n=41 Participants
102 Participants
n=1581 Participants
203 Participants
n=4626 Participants
Body Measurement (Weight)
57.5 kg
STANDARD_DEVIATION 8.3 • n=41 Participants
57.5 kg
STANDARD_DEVIATION 7.7 • n=1581 Participants
57.5 kg
STANDARD_DEVIATION 8.0 • n=4626 Participants

PRIMARY outcome

Timeframe: On day of oocyte retrieval (up to 22 days after start of stimulation)

Outcome measures

Outcome measures
Measure
FE 999049
n=148 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=153 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Number of Oocytes Retrieved
12.7 Oocytes retrieved
Standard Deviation 5.2
11.8 Oocytes retrieved
Standard Deviation 5.3

SECONDARY outcome

Timeframe: Stimulation day 6 and end-of-stimulation (maximum stimulation day 20)

Outcome measures

Outcome measures
Measure
FE 999049
n=148 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=153 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Number of Follicles on Stimulation Day 6 and End-of-stimulation
Stimulation day 6
2.9 Follicles
Standard Deviation 3.0
3.0 Follicles
Standard Deviation 3.3
Number of Follicles on Stimulation Day 6 and End-of-stimulation
End of stimulation
13.3 Follicles
Standard Deviation 4.4
12.7 Follicles
Standard Deviation 4.5

SECONDARY outcome

Timeframe: stimulation day 6 and end-of-stimulation (maximum stimulation day 20)

Outcome measures

Outcome measures
Measure
FE 999049
n=147 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=153 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Serum Concentrations of Estradiol on Stimulation Day 6 and End-of-stimulation
Stimulation day 6
1303.2 pmol/L
Standard Deviation 1093.1
1275.9 pmol/L
Standard Deviation 1050.8
Serum Concentrations of Estradiol on Stimulation Day 6 and End-of-stimulation
End of stimulation
11181.2 pmol/L
Standard Deviation 5842.2
10124.1 pmol/L
Standard Deviation 4522.2

SECONDARY outcome

Timeframe: stimulation day 6 and end-of-stimulation (maximum stimulation day 20)

Outcome measures

Outcome measures
Measure
FE 999049
n=148 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=153 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Serum Concentrations of Progesterone on Stimulation Day 6 and End-of-stimulation
End of Stimulation
3.4 nmol/L
Standard Deviation 1.6
2.8 nmol/L
Standard Deviation 1.3
Serum Concentrations of Progesterone on Stimulation Day 6 and End-of-stimulation
Stimulation day 6
1.6 nmol/L
Standard Deviation 0.9
1.4 nmol/L
Standard Deviation 0.8

SECONDARY outcome

Timeframe: On day 1 after oocyte retrieval (up to 23 days after start of stimulation)

Outcome measures

Outcome measures
Measure
FE 999049
n=148 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=153 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Number of Fertilised Oocytes
7.8 Fertilised Oocytes
Standard Deviation 4.3
7.4 Fertilised Oocytes
Standard Deviation 4.3

SECONDARY outcome

Timeframe: On day 1 after oocyte retrieval (up to 23 days after start of stimulation)

Outcome measures

Outcome measures
Measure
FE 999049
n=148 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=151 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Fertilisation Rate
59.6 percentage of fertilised oocytes
Standard Deviation 19.9
62.7 percentage of fertilised oocytes
Standard Deviation 20.9

SECONDARY outcome

Timeframe: Day 3 after oocyte retrieval

Outcome measures

Outcome measures
Measure
FE 999049
n=148 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=153 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Number of Embryos (Total and Quality)
Total
8.8 Embryos
Standard Deviation 4.6
8.2 Embryos
Standard Deviation 4.6
Number of Embryos (Total and Quality)
Good-Quality
5.5 Embryos
Standard Deviation 3.7
5.1 Embryos
Standard Deviation 3.7

SECONDARY outcome

Timeframe: Up to 20 stimulation days

Outcome measures

Outcome measures
Measure
FE 999049
n=148 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=153 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Total Gonadotropin Dose
154.1 ug
Standard Deviation 41.0
167.7 ug
Standard Deviation 48.4

SECONDARY outcome

Timeframe: Up to 20 stimulation days

Outcome measures

Outcome measures
Measure
FE 999049
n=148 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=153 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Number of Stimulation Days
10.6 days
Standard Deviation 1.5
10.5 days
Standard Deviation 1.7

SECONDARY outcome

Timeframe: 13-15 days after transfer

Outcome measures

Outcome measures
Measure
FE 999049
n=148 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=153 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Positive βhCG (Positive Serum βhCG Test 13-15 Days After Transfer) Rate
Positive
71 Participants
72 Participants
Positive βhCG (Positive Serum βhCG Test 13-15 Days After Transfer) Rate
Negative
77 Participants
81 Participants

SECONDARY outcome

Timeframe: 5-6 weeks after transfer

Outcome measures

Outcome measures
Measure
FE 999049
n=148 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=153 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Clinical Pregnancy (at Least One Gestational Sac 5-6 Weeks After Transfer) Rate
Positive
61 Participants
56 Participants
Clinical Pregnancy (at Least One Gestational Sac 5-6 Weeks After Transfer) Rate
Negative
87 Participants
97 Participants

SECONDARY outcome

Timeframe: 5-6 weeks after transfer

Outcome measures

Outcome measures
Measure
FE 999049
n=148 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=153 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Vital Pregnancy (at Least One Intrauterine Gestational Sac With Fetal Heart Beat 5-6 Weeks After Transfer) Rate
Positive
59 Participants
50 Participants
Vital Pregnancy (at Least One Intrauterine Gestational Sac With Fetal Heart Beat 5-6 Weeks After Transfer) Rate
Negative
89 Participants
103 Participants

SECONDARY outcome

Timeframe: 5-6 weeks after transfer

Population: Total Number of gestational sacs (subject level)

The implantation rate was defined as the number of gestational sacs 5-6 weeks after transfer divided by number of embryos transferred.

Outcome measures

Outcome measures
Measure
FE 999049
n=185 Number of transferred embryos
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=191 Number of transferred embryos
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Implantation Rate
40.5 percentage of embryos transferred
62 percentage of embryos transferred

SECONDARY outcome

Timeframe: 10-11 weeks after transfer

Outcome measures

Outcome measures
Measure
FE 999049
n=148 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=153 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Ongoing Pregnancy (at Least One Intrauterine Viable Fetus 10-11 Weeks After Transfer) Rate
Positive
54 Participants
45 Participants
Ongoing Pregnancy (at Least One Intrauterine Viable Fetus 10-11 Weeks After Transfer) Rate
Negative
94 Participants
108 Participants

SECONDARY outcome

Timeframe: 10-11 weeks after transfer

Population: Low starting dose: 10 μg FE 999049 or 150 IU GONAL-F, high starting dose: 15 μg FE 999049 or 225 IU GONAL-F

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

Outcome measures

Outcome measures
Measure
FE 999049
n=185 Number of transferred embryos
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=191 Number of transferred embryos
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Ongoing Implantation Rate (Number of Intrauterine Viable Fetuses 10-11 Weeks After Transfer Divided by Number of Embryos Transferred)
36.2 percentage of embryos transferred
26.2 percentage of embryos transferred

SECONDARY outcome

Timeframe: ≤9 days after triggering of final follicular maturation (early OHSS), >9 days after triggering of final follicular maturation until 21-28 days after last IMP dose or up to ongoing pregnancy 8-9 weeks after transfer in pregnant participants (late OHSS)

Early OHSS was defined as OHSS with onset ≤9 days after triggering of final follicular maturation. Late OHSS was defined as OHSS with onset \>9 days after triggering of final follicular maturation. Total OHSS measure the incidence of OHSS both early and late.

Outcome measures

Outcome measures
Measure
FE 999049
n=148 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=153 Participants
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Early Ovarian Hyperstimulation Syndrome (OHSS), Late OHSS, and Total OHSS (All Overall and by Grade)
Early OHSS
4 Participants
8 Participants
Early Ovarian Hyperstimulation Syndrome (OHSS), Late OHSS, and Total OHSS (All Overall and by Grade)
Late OHSS
2 Participants
1 Participants
Early Ovarian Hyperstimulation Syndrome (OHSS), Late OHSS, and Total OHSS (All Overall and by Grade)
Total OHSS
6 Participants
9 Participants

Adverse Events

FE 999049

Serious events: 4 serious events
Other events: 16 other events
Deaths: 0 deaths

GONAL-F

Serious events: 11 serious events
Other events: 25 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
FE 999049
n=148 participants at risk
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=153 participants at risk
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Reproductive system and breast disorders
Ovarian Hyperstimulation Syndrome
0.68%
1/148 • Number of events 1 • 12 months
1.3%
2/153 • Number of events 2 • 12 months
Infections and infestations
Bartholin's abscess
0.00%
0/148 • 12 months
0.65%
1/153 • Number of events 1 • 12 months
Infections and infestations
Dengue Fever
0.68%
1/148 • Number of events 1 • 12 months
0.00%
0/153 • 12 months
Pregnancy, puerperium and perinatal conditions
Abortion Spontaneous
0.68%
1/148 • Number of events 1 • 12 months
2.6%
4/153 • Number of events 4 • 12 months
Pregnancy, puerperium and perinatal conditions
Abortion Threatened
0.68%
1/148 • Number of events 1 • 12 months
2.0%
3/153 • Number of events 3 • 12 months
Pregnancy, puerperium and perinatal conditions
Ectopic Pregnancy
0.00%
0/148 • 12 months
2.0%
3/153 • Number of events 3 • 12 months

Other adverse events

Other adverse events
Measure
FE 999049
n=148 participants at risk
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 10 or 15 µg FE 999049: FE 999049 was administered as single daily subcutaneous injections at a starting dose of either 10 or 15 µg daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 5 µg, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 5 µg, and the maximum daily dose was 20 µg. Participants were treated for a maximum of 20 days.
GONAL-F
n=153 participants at risk
The participants received either low or high starting dose as appropriate according to Investigators Judgement. 150 or 225 IU. GONAL-F: GONAL-F was administered as single daily subcutaneous injections at a starting dose of either 150 or 225 IU daily that was fixed for the first five stimulation days. Based on ovarian response, the dose was increased or decreased by 75 IU, with dose adjustments implemented not more frequently than once every 2 days per investigator's judgement. The minimum daily dose was 75 IU, and the maximum daily dose was 300 IU. Participants were treated for a maximum of 20 days. Coasting was not allowed.
Reproductive system and breast disorders
Hydrometra
6.1%
9/148 • Number of events 9 • 12 months
4.6%
7/153 • Number of events 8 • 12 months
Reproductive system and breast disorders
Pelvic discomfort
5.4%
8/148 • Number of events 8 • 12 months
5.2%
8/153 • Number of events 8 • 12 months
Infections and infestations
Upper respiratory tract infection
6.1%
9/148 • Number of events 10 • 12 months
3.3%
5/153 • Number of events 5 • 12 months
Pregnancy, puerperium and perinatal conditions
Biochemical Pregnancy
5.4%
8/148 • Number of events 8 • 12 months
9.8%
15/153 • Number of events 15 • 12 months
Pregnancy, puerperium and perinatal conditions
Abortion Spontaneous
5.4%
8/148 • Number of events 8 • 12 months
3.3%
5/153 • Number of events 5 • 12 months
Pregnancy, puerperium and perinatal conditions
Morning Sickness
8.1%
12/148 • Number of events 18 • 12 months
6.5%
10/153 • Number of events 15 • 12 months

Additional Information

Global Clinical Compliance

Ferring Pharmaceuticals

Phone: +1 833-548-1402

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place