Personalized Insemination Treatment Study

Eligibility Details: Inclusion Criteria: - Women having consented to the study - Women followed at fertility center - First IUI cycle - Women between the ages of 18 to 42 inclusively at time of consent form signature - AMH < 35 pmol/L (4.9 ng/mL) in participants' file in the last 24 months - At least one permeable Fallopian tube confirmed by laparoscopy, hysterosalpingography (HSG), hysterosalpingosonography (HSSG) or one pregnancy in the last 3 years - Insemination with either partner or donor sperm - Male partner semen analysis considered adequate for IUI in accordance to the centre's standard practice - Menstrual cycles from 26 to 39 days - Presence of both ovaries Exclusion Criteria: - Unable to consent - Body weight >100 kg - AMH ≥35 pmol/L (4.9 ng/mL) in participants' file in the last 24 months - Severe malformation (unicornuate or bicornuate uterus) or uterine anomaly including fibroids ≥ 5 cm - Uncontrolled thyroid or adrenal dysfunction - Pituitary tumour - Persistent ovarian cysts or enlargement not due to PCOS (Polycystic ovary syndrome) > 3 cm - Anovulatory women - Use of contraceptives in the last 3 months prior to start of stimulation - Diagnosis of hydrosalpinx - Malignancies - Breast pathology incompatible with gonadotropin stimulation - Hypersensitivity to follitropin delta or to any ingredient in the formulation - Addition of other infertility medication that can influence follicle stimulation and maturation such as growth hormone (GH)