Ovarian Reserve and Bariatric Surgery

Recruiting now

Conditions studied: Bariatric Surgery, Obesity, Reproductive Health, Fertility

In brief

The expansion of the obesity epidemic is accompanied with an increase in bariatric procedures, in particular in women of reproductive age. Severe obesity has negative effects on fertility and on in vitro fertilization (IVF) outcomes, and the weight loss induced by the bariatric surgery (BS) is believed to reverse the deleterious impact of overweight and obesity on female fertility. However, research is limited to retrospective cohort studies, small case-series and case-control studies. Weight reduction has been shown to improve fecundity and hormonal state of a subgroup of obese patients with polycystic ovary syndrome (PCOS). In this population, recent studies have demonstrated an increase of naturally conceived pregnancies following bariatric surgery. However, these studies have evaluated only short-term evolution of ovarian function and not all studies demonstrated improvements in fertility outcomes after BS. Clearly, more studies are needed regarding the effect of BS on obesity-related infertility, and long-term outcome of ovarian function has to be assessed. Markers of ovarian reserve, including Follicle Stimulating Hormone (FSH), antral follicle count (AFC), and anti-mullerian hormone (AMH), have been used to counsel patients regarding in their reproductive outcomes. Serum AMH concentrations remain remarkably stable throughout the menstrual cycle, which is a great advantage over other markers of fertility. Various studies have evaluated the association between AMH and body mass index (BMI) but reported contradictory results. Some of them have reported a significant inverse correlation between AMH and BMI, but others found no relationship between AMH and BMI. Scarce and small preliminary studies have been performed to evaluate AMH changes after surgical weight loss and showed a decrease in serum AMH.

Key facts

Study ID

NCT04583150

Run by

Assistance Publique - Hôpitaux de Paris

People needed

238

Starts

2020-12-03

Expected to finish

2028-03-01

Last updated by the study team

2024-02-15

Who can join

Age: 18 and older, up to 37. Sex: female. Healthy volunteers: not accepted.

You may qualify if…

• Obese women with planned surgery (BS group)
• Obese women with an indication of bariatric surgery (BMI ≥ 35 kg/m² with an obesity related comorbidity or BMI ≥ 40 kg/m²)
• Age 18 to 37 years (inclusion possible until the day before the 37th birthday)
• No pregnancy project in the next 12 months
• Signed informed consent
• Affiliated to The French social security except patient on AME (state medical aid)
• Obese women with no planned surgery (control group)
• Obese women with BMI ≥ 35 kg/m²
• Age 18 to 37 years (inclusion possible until the day before the 37th birthday)
• No pregnancy project in the next 12 months
• Signed informed consent
• Affiliated to the French social security except patient on AME (state medical aid)
• Matched for age and BMI category (35-39.9 kg/m², 40-49.9 kg/m² and ≥ 50 kg/m²) with an operated woman
• No bariatric surgery project in the next 12 months

You may not qualify if…

• For both groups : Obese women with planned bariatric surgery (BS group) and obese women with no planned surgery (control group):
• Medical condition known to alter ovarian reserve (previous oophorectomy, ovarian surgery, chemotherapy, pelvis or hypothalamic radiotherapy, known premature ovarian insufficiency …)
• Contraceptive with antigonadotropic action during the month before inclusion
• Pregnant or lactating woman
• HIV infection
• Previous bariatric surgery
• Expected follow up less than 3 years
• Absolute contraindication for bariatric surgery (vital risk, anaesthetic contraindication, non stabilized psychiatric disorder, substance addiction)

Where it is running

• 002 CHU Toulouse -Hôpital Rangueil — Toulouse, France (enrolling)
• CHU Angers — Angers, France (enrolling)
• CHU Clermont Ferrand -Site Gabriel Montpied — Clermont-Ferrand, France (enrolling)
• AP-HP - Hôpital Louis Mourier — Colombes, France (enrolling)
• AP-HP - Groupe Hospitalier Pitié Salpêtrière — Paris, France (enrolling)
• AP-HP - Groupe Hospitalier Pitié Salpêtrière — Paris, France (enrolling)
• CHU Dijon Bourgogne - Hôpital Le Bocage Sud — Dijon, France
• CHRU Lille -Hôpial Claude Huriez — Lille, France
• CHU Grenoble-CSO Grenoble-Arc Alpin — Grenoble, France
• HCL - Hôpital Lyon -Sud — Lyon, France
• AP-HM - Hôpital Nord — Marseille, France
• CHU Montpellier Hôpital Lapeyronie — Montpellier, France
• CHU Nantes - Hôpital Nord Laennec — Nantes, France
• AP-HP - Hôpital Europeen Georges Pompidou — Paris, France

Full record on ClinicalTrials.gov

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