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Comparison of the Euploid Rate of Blastocyst Between PPOS and GnRH Antagonist Protocol in Women With PCOS Undergoing PGT-A

A Randomized Control Trial to Compare the Euploid Rate of Blastocyst Between the PPOS (Progestin-primed Ovarian Stimulation) Protocol and the Gonadotropin-releasing Hormone (GnRH) Antagonist Protocol in Women With PCOS (Polycystic Ovary Syndrome) Undergoing PGT-A (Preimplantation Genetic Testing for Aneuploidy)

Status
Not yet recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05326087
Enrollment
204
Registered
2022-04-13
Start date
2026-06-01
Completion date
2028-12-01
Last updated
2026-02-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Preimplantation Genetic Testing, Progestin-primed Ovarian Stimulation, Polycystic Ovarian Syndrome, GnRH Antagonist

Brief summary

This randomized trial aims to compare the euploid rate of blastocysts between PPOS (progestin-primed ovarian stimulation) and GnRH (gonadotrophin releasing hormone) antagonist protocols in patients with PCOS (polycystic ovary syndrome) undergoing PGT-A (preimplantation genetic testing for aneuploidy). Infertile women with PCOS will be recruited for study after explanation and counseling if they fulfill the inclusion criteria and do not have the exclusion criteria. Eligible women will be randomised into one of the two groups: Antagonist group: Women will receive antagonist once subcutaneously daily from day 6 of ovarian stimulation till the day of the ovulation trigger. PPOS group: Women will receive oral MPA (medroxyprogesterone acetate)10mg qd from Day 3 till the day of ovulation trigger. The primary outcome is the euploidy rate of blastocysts.

Interventions

DRUGGnRH antagonist

GnRH antagonist (Cetrorelix 0.25mg) once subcutaneously daily from day 6 of ovarian stimulation till the day of the ovulation trigger

DRUGMPA

oral MPA 10mg qd from Day 3 of ovarian stimulation till the day of ovulation trigger.

Sponsors

ShangHai Ji Ai Genetics & IVF Institute
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
20 Years to 37 Years
Healthy volunteers
No

Inclusion criteria

* Women age between 20 and 37 years. * Women diagnosed with PCOS according to the modified Rotterdam criteria: oligomenorrhea or amenorrhea, together with the presence of ≥12 antral follicles (≤9 mm) and/or ovarian volume \>10 mL on transvaginal ultrasonographic scanning, and/or clinical/ biochemical hyperandrogenism. Other causes of hyperandrogenism and ovulation dysfunction-including tumours, congenital adrenal hyperplasia, hyperprolactinaemia and thyroid dysfunction-were excluded

Exclusion criteria

* Presence of a functional ovarian cyst with E2\>100 pg/mL * Endometriosis grade 3 or higher * Repeated implantation failure (\>=4 embryos replaced or \>=2 blastocysts replaced without success) * Women with a uterine cavity abnormality, such as a uterine congenital malformation (uterus uni-cornate, bicornate, or duplex); untreated uterine septum, adenomyosis, submucous myoma, or endo-metrial polyp(s) * Women who are indicated and planned to undergo PGT-SR (Preimplantation genetic testing for structural rearrangement) or PGT-M (Preimplantation genetic testing for monogenic disorder), for example, parental abnormal karyo-type or diagnosed with monogenic disease; * Recipient of oocyte donation * Presence of hydrosalpinx which is not surgically treated

Design outcomes

Primary

MeasureTime frameDescription
euploidy rate1 month after oocyte retrievaleuploidy rate of blastocysts

Secondary

MeasureTime frameDescription
live birth rate1 year after embryo transferdeliveries ≥22 weeks gestation with heartbeat and breath of the first frozen embryo transfer
cumulative live birth rate1 year after embryo transfercumulative live birth within 6 months of randomization
ongoing pregnancy12 weeks' gestationa viable pregnancy beyond 12 weeks' gestation of the first frozen embryo transfer
number of oocytes retrieved1 day after oocyte retrievalnumber of oocytes retrieved
OHSS(ovarian hyperstimulation syndrome)1 month after ovarian stimulationModerate or severe ovarian hyperstimulation syndrome.Ovarian hyperstimulation syndrome (OHSS) is diagnosed and classified according to the Royal College of Obstetricians and Gynaecologists guideline. Green-top guideline No.5. Ovarian hyperstimulation syndrome. https://www.rcog.org.uk/en/guidelines-research-services/guidelines/gtg5/ (accessed 26 Feb 2016).
birthweight of newborns1 year after embryo transferbirthweight of newborns

Contacts

CONTACTHE LI, MD
lihe198900@163.com+8613817223099
CONTACTXIAOXI SUN, PHD
PRINCIPAL_INVESTIGATORXIAOXI SUN, PHD

Shanghai JiAi Genetics & IVF Institute, China

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026