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)

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.

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.

Eligibility Criteria:
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.