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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT04289805
Other study ID # SRB_201808_163
Secondary ID
Status Recruiting
Phase Phase 4
First received
Last updated
Start date February 25, 2019
Est. completion date January 30, 2029

Study information

Verified date August 2022
Source Erasme University Hospital
Contact Isabelle Demeestere, MD,PhD
Phone 003225556592
Email isabelle.demeestere@ulb.be
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This is a multicenter hospital-based prospective cohort study conducted in institutions with known expertise in performing oocytes/embryo freezing for fertility preservation. The study aims at refining the understanding of the efficacy and safety of controlled ovarian stimulation with or without letrozole in young women with newly diagnosed breast cancer who are candidates to receive (neo)adjuvant chemotherapy.


Description:

Patients enrolled in this study undergo standard or "random start" ovarian stimulation with Gonadotropins using antagonist protocol before the beginning of chemotherapy. Ovulation is triggered in all patients with a Gonadotropin Releasing Hormone-GnRH agonist. After retrieval, oocytes are denuded and matured oocytes are subjected to fertilization before embryo freezing or direct vitrification. Primary objective is to evaluate the efficacy of performing a controlled ovarian stimulation with or without letrozole in young women with newly diagnosed breast cancer who are candidates to receive (neo)adjuvant chemotherapy in terms of mature oocytes collected.


Recruitment information / eligibility

Status Recruiting
Enrollment 565
Est. completion date January 30, 2029
Est. primary completion date December 30, 2023
Accepts healthy volunteers No
Gender Female
Age group 18 Years to 40 Years
Eligibility Inclusion Criteria: - Diagnosis of invasive non-metastatic breast cancer (i.e. stage I to III); - Breast cancer diagnosis =18 and = 40 years; - No prior history of gonadotoxic treatments; - Fertility preservation counseling for fertility preservation; - Written inform consent; - FSH < 20 UI/L and/or antra-follicular count = 6 (follicles of 2-9 mm) and/or AMH = 6 pmol (only applicable for patients who undergo controlled ovarian stimulation for embryo/oocyte cryopreservation). Exclusion Criteria: - Newly diagnosed stage IV breast cancer (i.e. de novo metastatic breast cancer); - Prior diagnosis of other malignancies before breast cancer.

Study Design


Intervention

Drug:
Letrozole
Patients start ovarian stimulation protocol according to their menstrual cycle phase at enrollment (standard or "random start"). Ovarian stimulation includes gonadotropins administration in a GnRH antagonist protocol. "Standard Protocol": letrozole is orally administered (5mg/d) from cycle day 2-3 throughout the ovarian stimulation with gonadotropins protocol until ovulation triggering. "Random start" protocol: letrozole is administered throughout the stimulation together with gonadotropins. GnRH antagonist is administered at cycle day 7 or as soon as at least one follicle reaches 12-14 mm. Oocytes are collected 36h after ovulation triggering with GnRH agonist.
Other:
standard-stimulated cohort
Patients start ovarian stimulation protocol according to their menstrual cycle phase at enrollment (standard or "random start"). Ovarian stimulation includes gonadotropins administration in a GnRH antagonist protocol. "Standard Protocol": Gonadotrophins started from cycle day 2-3 throughout the ovarian stimulation until ovulation triggering. "Random start" protocol: Gonadotrophins started at any time of the cycle and throughout the stimulation. GnRH antagonist is administered at cycle day 7 or as soon as at least one follicle reaches 12-14 mm. Oocytes are collected 36h after ovulation triggering with GnRH agonist.

Locations

Country Name City State
Belgium CHIREC- Hospital Delta Brussel
Belgium CUB-Hôpital Erasme Brussel
Belgium CHC-Saint Vincent Liège
France Centre Oscar Lambret Lille
France CHRU Lille Lille
Italy Ospedale San Martino Genova

Sponsors (2)

Lead Sponsor Collaborator
Erasme University Hospital University Hospital, Lille

Countries where clinical trial is conducted

Belgium,  France,  Italy, 

Outcome

Type Measure Description Time frame Safety issue
Primary Efficacy of the ovarian stimulation and oocyte collection procedure: Number of mature oocytes collected Number of mature oocytes collected an average of 2 weeks after inclusion
Secondary Number of patient with adverse events due to COS: OHSS Adverse events reporting during COS (Ovarian Hyperstimulation syndrome-OHSS) Through treatment procedure, an average of 2 weeks after inclusion
Secondary Characteristics of Ovarian stimulation: total gonadotropin doses Total gonadotropin doses (International Unit- IU) An average of 2 weeks after inclusion
Secondary Characteristics of Ovarian stimulation: duration of the COS duration of the COS (days) An average of 2 weeks after inclusion
Secondary Characteristics of Ovarian stimulation: type of stimulation type of stimulation (standard or random-start). An average of 2 weeks after inclusion
Secondary Efficacy of the ovarian stimulation and oocyte collection: Maturation rate Maturation rate (number of total oocyte collected/number of mature oocytes) An average of 2 weeks after inclusion
Secondary Outcomes of assisted reproductive technology procedures Number of pregnancies and outcomes (premature delivery, miscarriage, abortion, delivery healthy babies, congenital malformation). Through study completion, 5 years
Secondary Anticancer therapies effect on ovarian function: progesterone Hormonal measurements Progesterone ng/ml Inclusion, an average of 2 weeks, 6 months, 18 months, 30 months, 60 months
Secondary Anticancer therapies effect on ovarian function: AMH Anti-Mullerian Hormone (AMH) measurements AMH ng/ml Inclusion, an average of 2 weeks, 6 months, 18 months, 30 months, 60 months
Secondary Anticancer therapies effect on ovarian function: FSH Follicle-Stimulating Hormone (FSH) measurements FSH IU/L Inclusion, an average of 2 weeks, 6 months, 18 months, 30 months, 60 months
Secondary Anticancer therapies effect on ovarian function: E2 Hormonal measurements E2 pg/ml Inclusion, an average of 2 weeks, 6 months, 18 months, 30 months, 60 months
Secondary Anticancer therapies effect on ovarian function Amenorrhea rate (6months without spontaneous menstruation) An average 18 months, 30 months, 60 months after inclusion
Secondary Oncological outcomes 1 Invasive disease-free survival (iDFS) 5 years
Secondary Oncological outcomes 2 breast cancer-free interval (BCFI) 5 years
Secondary Oncological outcomes 3 overall survival (OS) 5 years
Secondary Circulating breast cancer cells level before stimulation circulating tumor DNA (ctDNA) Inclusion
Secondary Circulating breast cancer cells level after stimulation circulating tumor DNA (ctDNA) average of 2weeks after inclusion
Secondary Number of patient with adverse events due to egg collection bleeding An average of 2 weeks after inclusion
Secondary Number of patient with adverse events due to egg collection pelvic infection An average of 2 weeks after inclusion
Secondary Efficacy of the in vitro fertilization procedure: Fertilization rate Fertilization rate (number of oocyte fertilized/number of embryo obtained) Through study completion, 5 years
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