Identify Effective Doses of LY01021 in Controlled Ovarian Hyperstimulation (COH) for Female Subjects Undergoing Assisted Reproductive Technology (ART)

A Multicentre, Open-label, Dose-finding, Phase 2 Study to Investigate the Efficacy, and Safety of Different Doses of LY01021 in Controlled Ovarian Hyperstimulation(COH) for Female Subjects Undergoing Assisted Reproductive Technology (ART)

This is a multicentre, open-label, dose-finding, phase 2 study that will recruit approximately 90 female subjects undergoing COH for in vitro fertilization (IVF) or intracytoplasmic single sperm injection (ICSI). Three LY01021 dose groups of 40 mg QD, 30 mg QD, and 20 mg QD will be included, with not exceed 45 subjects in each group to investigate the efficacy and safety.

Study Overview

• Status: Active, not recruiting
• Conditions: Assisted Reproduction
• Intervention / Treatment: Drug: LY01021

• Study Type: Interventional
• Enrollment (Estimated): 90
• Phase: Phase 2

Contacts and Locations

Study Locations

• China
  • Beijing, China
    • Peking University Third Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Informed consent of subjects and their spouses;
• Married infertile female subjects aged 20 to 40 years (40 years exclusive) with indications for in vitro fertilization-embryo transfer (IVF-ET) or intracytoplasmic sperm injection (ICSI);
• Weight 45Kg ~ 80Kg (both inclusive), and body mass index (BMI) 19.0 ~ 28.0kg/m2;
• Regular menstrual cycle (24 ~ 35 days, both inclusive) for the last 3 months prior to screening;
• Anticipated normal ovarian response;
• Willingness of the subject to undergo fresh cycle transfer with one or two embryos at a time in the first IVF-ET cycle；
• Normal cervical cytology results (TCT) or with limited clinically significance within 6 months prior to screening; or subjects with atypical squamous cells of undetermined significance (ASC-US) of TCT tested negative for high-risk types of human papillomavirus (HPV).

Exclusion Criteria:

• Prior to screening, individuals underwent three or more IVF/ICSI-ET COH cycles without achieving clinical pregnancy；
• Previous IVF/ ICSI failure due to sperm/fertilization problems/low fertilization rate(<30%) and no improvement in related medical condition;
• Subjects with more than 2 times of spontaneous abortion;
• Subjects at high risk of OHSS, judged by the investigator according to the Golan classification (e.g., those with moderate to severe OHSS during previous COH cycles, polycystic ovary syndrome (PCOS), or with previous cancelled COH cycles due to OHSS);
• Subjects with low ovarian function;
• Any pregnancy that occurred within 3 months prior to screening;
• Unexplained abnormal vaginal bleeding within 6 months prior to screening;
• Subjects with serious infection, severe trauma or major surgical procedure within 6 months prior to screening.
• ALT and AST levels at the screening visit or the start of ovarian stimulation were more than twice the upper limit of normal;
• Positive serum β-hCG test at the screening visit or the start day of ovarian stimulation;
• Past medical history or gynecological ultrasound indicates clinically significant conditions;
• Any disease or symptom that can affect systemic function or may affect the absorption, accumulation, metabolism, or excretion of the test drug (e.g., chronic intestinal diseases, Crohn's disease, ulcerative colitis).
• Major systemic diseases, endocrine or metabolic abnormalities;
• Thromboembolic diseases or a history of thromboembolic diseases;
• The subject or her spouse or both of them carry a chromosomal abnormality, or suffer from a known monogenic hereditary disease or a severe disease with genetic susceptibility requiring pre-implantation genetic testing (excluding chromosomal polymorphisms);
• Malignant tumor or history of malignant tumor (except basal cell or squamous cell skin cancer, papillary thyroid carcinoma, in situ cancer );
• Use of fertility regulators within 1 month prior to ovarian stimulation, such as clomiphene citrate, letrozole, gonadotropins (Gn), hormonal drugs (including oral contraceptives, estrogens, progestogens, etc.) bromocriptine, etc..
• Subjects who have used strong inducers/inhibitors of cytochrome P450 3A4 (CYP3A4), strong inducers/inhibitors of P-glycoprotein (P-gp), or gastric acid secretion inhibitors within 2 weeks or 5 half-lives (whichever is longer) before the first administration of LY01021;
• Any other reasons deemed by the researcher as unsuitable for participation in this study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Sequential Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: LY01021; Treatment group 40mg: oral LY01021; 40mg QD p.o.; Treatment group 30mg: oral LY01021; 30mg QD p.o.; Treatment group 20mg: oral LY01021; 20mg QD p.o.;	Drug: LY01021; LY01021 should be taken orally once a day.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Inhibition rate of premature LH surge	From Day 5 to the hCG injection 1 day

Secondary Outcome Measures

Outcome Measure	Time Frame
Number of oocyte retrieved per COH cycle	On oocyte retrieval 1 day
2PN rate.	16-18 hours (h) after fertilization
High quality embryo rate.	3 days after fertilization
Chemical pregnancy rate.	13-15 days after transplantation
Clinical pregnancy rate.	30-37 days after transplantation
Persistent pregnancy rate.	70-84 days after transplantation
Adverse events.	Through study completion, an average of 3 months

Collaborators and Investigators

• Sponsor: Luye Pharma Group Ltd.

Study record dates

Study Major Dates

• Study Start (Actual): October 9, 2024
• Primary Completion (Estimated): December 31, 2025
• Study Completion (Estimated): December 31, 2025

Study Registration Dates

• First Submitted: August 27, 2025
• First Submitted That Met QC Criteria: November 14, 2025
• First Posted (Actual): November 19, 2025

Study Record Updates

• Last Update Posted (Actual): November 19, 2025
• Last Update Submitted That Met QC Criteria: November 14, 2025
• Last Verified: November 1, 2025

More Information

Terms related to this study

• Keywords: Assisted Reproductive Technology (ART); Controlled Ovarian Hyperstimulation (COH)
• Other Study ID Numbers: LY01021/CT-CHN-204

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No