RecruitingPhase 3NCT05899010

MIcronized PROgesterone in Frozen Embryo Transfer Cycles

A Phase III Randomized Controlled Trial Comparing the Efficacy, Safety and Tolerability of Two Formulations of Vaginal Micronized Progesterone

Sponsor

Fundación Santiago Dexeus Font

Enrollment

1,020 participants

Start Date

Jul 5, 2023

Study Type

INTERVENTIONAL

Conditions

Infertility

Summary

This randomized trial was designed as non-inferiority trial aiming to compare ongoing pregnancy rates following LPS with 600 mg/day vs 800 mg/day vaginal VMP. All patients will undergo an artificial cycle frozen embryo transfer (AC-FET) with transdermal estradiol 6mg/day Patients undergoing an artificial cycle FET will start estrogen priming with transdermal estradiol 6mg/day (Estrogel®) on cycle D1-D3. Following 10-12 days of estrogen priming, patients will be randomized to luteal phase support with a standard formulation (200mg tid, Utrogestan®) or a new formulation (400mg bid) VMP. All patients will undergo a serum P measurement on the day before embryo transfer (ET). Patients with P\<10 ng/ml will receive a supplement of oral micronized progesterone 300mg, while patients with P≥10ng/ml will maintain the previous luteal phase support (LPS) protocol

Eligibility

Sex: FEMALEMin Age: 18 YearsMax Age: 50 Years

Inclusion Criteria17

Endometrial preparation with hormone replacement therapy
Age 18-43 years following an autologous IVF cycle (with or without preimplantation genetic testing for aneuploidy)
Age \< 50 years following an egg donation cycle
BMI \> 18 and \< 30 kg/m2
blastocyst embryo transfer
Willing to participate in the study
Able to come to the Center to comply with the procedures of the study: blood tests, appointments and drug dispensation.
Exlusion Criteria:
• Uterine diseases (e.g. submucosal fibroids, polyps, previously diagnosed Müllerian abnormalities)
Hydrosalpinx
Recurrent pregnancy loss (≥ 3 previous miscarriages)
Recurrent implantation failure (≥ 3 previously failed embryo transfers of good-quality blastocysts)
Allergy to study medication
Pregnancy or lactation
Contraindication for hormonal treatment
Personalized initiation of exogenous progesterone according to a previous endometrial receptivity assay test
Recent history of severe disease requiring regular treatment (clinically significant concurrent medical condition that could compromise subject safety or interfere with the trial assessment).

Interested in this trial?

Get notified about updates and connect with the research team.

Interventions

DRUGVaginal progesterone 600mg daily

If endometrial thickness (ETH) ≥7 mm and follicle dominance/ultrasound (US) signs of ovulation P levels are measured: if P ≤1.5 patients start LPS, else cycle is cancelled. If ETH \<7mm and no follicle dominance: estradiol dose is increased to 9mg/day and new US is performed up to 4 days after. If persistent thin endometrium after dose increase, cycle is cancelled. 24-48h pre ET, E2 and P are measured. in the morning, pre VMP dose, or at least 6h after last progesterone dose. If progesterone \<10ng/ml, additional 300mg daily oral micronized progesterone is administered on the day of the ET and maintained until 10 weeks pregnancy or up to menses or up to negative pregnancy test 10 days after ET. ET will be performed with available blastocysts 6 days after start of LPS. 3-5 days, after ET, a blood test for P measurement will be performed in the morning, before VMP dose, or at least 6h after last progesterone dose. 10 days after ET, the last P test will be done with pregnancy test.

DRUGVaginal progesterone 800mg daily