Evaluation of Safety, Efficacy, and Pharmacokinetics of BT-114143 Injection in Patients With Abnormal Uterine Bleeding

This is a randomized, double-blind, placebo-controlled, multiple-dose escalation, Phase Ib clinical study conducted in patients with abnormal uterine bleeding (e.g., AUB). It aims to evaluate the safety, efficacy, pharmacokinetic characteristics of multiple administrations of BT-114143 Injection at different doses, as well as to explore changes in coagulation-related biomarkers and quality of life.

It is planned to enroll 39 adult patients with abnormal uterine bleeding.

Study Overview

• Status: Recruiting
• Conditions: Abnormal Uterine Bleeding
• Intervention / Treatment: Drug: BT-114143 Injection at low dose; Drug: BT-114143 Injection at Medium-dose; Drug: BT-114143 Injection at High-dose; Drug: control group

• Study Type: Interventional
• Enrollment (Estimated): 39
• Phase: Phase 1

Contacts and Locations

Study Locations

• China
  • Beijing Municipality
    • Beijing, Beijing Municipality, China, 100730
      • Recruiting
      • Peking union medical college hospital
      • Contact: Qi Yu; Phone Number: 010-69154116; Email: yuqimd@163.com

Participation Criteria

Eligibility Criteria

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

Description

Inclusion Criteria:

1. Be able to sign the informed consent form before any study-related procedures are performed, and be willing and able to comply with the study requirements;
2. Premenopausal female subjects, aged 18-50 years, including 18 and 50 years;
3. Have regular menstrual cycles in the past 6 months, with a menstrual cycle of ≥21 days and ≤35 days, and a menstrual period duration of ≤14 days;
4. Meet the diagnosis of abnormal uterine bleeding and agree to be admitted for treatment. Assessed by the alkaline hemoglobin method, in 2 consecutive menstrual cycles during the screening period, the menstrual blood loss is >80 ml in both cycles; or the blood loss in any one cycle is ≥160 ml;
5. The pregnancy test result is negative before randomization;
6. Those with a body mass index [BMI = weight (kg) / height² (m²)] of 18.5-28.0 kg/m² (including the boundary values).

Exclusion Criteria:

1. Patients with known endometrial polyps > 1.5 cm, endometrial malignancy, or atypical hyperplasia;
2. Patients with known or investigator-determined ovulatory dysfunctional abnormal uterine bleeding who require hormonal therapy;
3. Patients identified by investigators as having iatrogenic abnormal uterine bleeding;
4. Patients with abnormal uterine bleeding related to coagulation dysfunction, including but not limited to those with laboratory test results showing: platelet count ≤ 100×10⁹/L, or APTT prolonged by ≥ 10s beyond the upper limit of normal, or PT prolonged by ≥ 3s beyond the upper limit of normal;
5. Patients with bleeding caused by cervical or vaginal lesions;
6. Patients who have undergone major surgery within 6 months prior to screening;
7. Patients determined by investigators before randomization to require surgical treatments such as total hysterectomy, myomectomy, hysteroscopic treatment, uterine artery embolization, or ablation during the study period;
8. Patients who have received the following medications within 3 months prior to randomization: gonadotropin-releasing hormone agonists; sex hormone drugs administered orally, by injection, vaginally, or transdermally (including but not limited to drugs containing estrogen or progesterone); selective estrogen receptor modulators; hormonal intrauterine devices (LNG-IUS). For long-acting (3-month) gonadotropin-releasing hormone agonists or progesterone preparations, the last administration must be no later than 6 months prior to randomization;
9. Patients who have used danazol, desmopressin, tranexamic acid, aminocaproic acid, or traditional Chinese medicines for the treatment of menorrhagia within 3 months prior to randomization;
10. Patients who need to receive anticoagulants (e.g., warfarin, heparin, etc.) or antiplatelet therapies (e.g., clopidogrel, ticagrelor, etc.) during the study period;
11. Patients with intolerance or contraindications to BT-114143 Injection;
12. Patients who have participated in clinical trials of other investigational drugs, biological agents, or medical devices and received therapeutic interventions within 30 days prior to screening;
13. Patients with clinically severe diseases such as known disorders of the circulatory, endocrine, nervous, digestive, respiratory, urinary, hematological, immunological, psychiatric, or metabolic systems, as assessed by investigators as unsuitable for participation in the trial;
14. Patients with a known history of glaucoma or retinopathy, as assessed by investigators as unsuitable for participation in the trial;
15. Untreated or poorly controlled thyroid dysfunction, except for mild subclinical hypothyroidism (i.e., TSH < 10 mIU/L with normal FT4 and TT4);
16. Patients with a known history of thrombotic diseases, including but not limited to pulmonary embolism, deep vein thrombosis, etc.;
17. Patients diagnosed with malignant tumors within the past 5 years, except for cured basal cell carcinoma of the skin;
18. Patients with cervical cytology results indicating a risk of cervical cancer within 1 year prior to the screening period and requiring treatment.

19. Patients with one or more of the following abnormal laboratory test results before randomization:

    • Alanine aminotransferase (ALT) and/or aspartate aminotransferase (AST) > 1.5 × ULN;
    • Total bilirubin > 1.5 × ULN, except for patients with Gilbert's syndrome;
    • eGFR ≤ 60 mL/min/1.73 m² (calculated using the CKD-EPI formula);
    • Hemoglobin < 90 g/L;
20. Patients with known infection of human immunodeficiency virus (HIV), or positive hepatitis B surface antigen (HBsAg), or positive hepatitis C virus antibody (HCV Ab);
21. Alcohol abusers (i.e., consuming more than 14 standard units of alcohol per week within 3 months before screening (1 standard unit contains 14g of alcohol, such as 360ml of beer, 45ml of spirits with 40% alcohol content, or 150ml of wine)), or those with a history of drug abuse (such as morphine, tetrahydrocannabinolic acid, methamphetamine, 3,4-methylenedioxymethamphetamine, ketamine) within 1 year before screening, or with mental or neurological diseases that investigators consider may affect participation in the study;
22. Pregnant or lactating women, or subjects who had unprotected sex within 14 days before screening;
23. Subjects who have plans for pregnancy from the time of signing the informed consent form until 3 months after the last administration, or subjects (or their partners) who are unwilling to take effective contraceptive measures (specific contraceptive measures are shown in Appendix 1);
24. Patients with any condition or result that investigators or designated personnel consider may pose a risk to subjects or the implementation of the study;

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Quadruple

Number of Arms

4

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: low-dose group; Subjects received low-dose BT-114143 Injection treatment	Drug: BT-114143 Injection at low dose; A total of 10 subjects were enrolled. All of them received BT-114143 Injection at low dose. BT-114143 will be administered twice daily for three consecutive days.
Experimental: Medium-dose group; Subjects received Medium-dose BT-114143 Injection treatment	Drug: BT-114143 Injection at Medium-dose; A total of 10 subjects were enrolled. All of them received BT-114143 Injection at Medium-dose. BT-114143 will be administered twice daily for three consecutive days.
Experimental: High-dose Group; Subjects received High-dose BT-114143 Injection treatment	Drug: BT-114143 Injection at High-dose; A total of 10 subjects were enrolled. All of them received BT-114143 Injection at High-dose. BT-114143 will be administered twice daily for three consecutive days.
Placebo Comparator: control group; The subjects receive normal saline treatment.	Drug: control group; The ratio of subjects in the experimental group to those in the control group is 10:3, with 3 placebo - treated control subjects corresponding to each dose group. The subjects will receive placebo treatment twice a day for 3 consecutive days.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
safety evaluation	The incidence of abnormal laboratory values, clinically significant physical examination findings, vital signs, electrocardiograms (ECGs), and/or treatment-related adverse events/serious adverse events.	from the first administration to 2 weeks after the last administration

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change of menstrual bleeding volume from baseline	Sanitary products used by subjects are collected regularly, and menstrual blood loss is measured by the alkaline hemoglobin method.	from signing the informed consent to 2 weeks after the last administration
Percentage change of menstrual bleeding volume from baseline	Sanitary products used by subjects are collected regularly, and menstrual blood loss is measured by the alkaline hemoglobin method.	from signing the informed consent to 2 weeks after the last administration
The difference in the number of menstrual bleeding days between the post-treatment period and the baseline period in subjects.		From signing the informed consent to 2 weeks after the last administration
The proportion of subjects with menstrual blood loss ≤ 80 ml after treatment.		from signing the informed consent to 2 weeks after the last administration
The proportion of subjects with a reduction in menstrual blood loss of ≥50 ml after treatment compared with the baseline		from signing the informed consent to 2 weeks after the last administration
The proportion of subjects with a reduction in menstrual blood loss of ≥36 ml after treatment compared with the baseline.		from signing the informed consent to 2 weeks after the last administration
The change in the Menorrhagia Impact Questionnaire (MIQ) score from baseline after treatment in subjects.	Evaluate Menorrhagia Impact Questionnaire (MIQ) score at screening visit and treatment period. The MIQ consists of six individual measures or items. The first 4 items are evaluated by using 4-point (item 1) or 5-point (items 2-4) response scales. No summative scale is derived for item 5 as it serves as a descriptive tool to characterize limitations of specific activities. Item 6 represents a global assessment (impact, degree, and meaningfulness) of the change in MBL when compared to the previous period. Scores correlate with symptom severity; a higher score indicates more severe heavy menstrual bleeding.	from signing the informed consent to 2 weeks after the last administration
The change in the Menstrual Discomfort Questionnaire (MDQ) score from baseline after treatment in subjects.	A total of 46 related items that reflect eight subscales were included in the MDQ. Each of the eight subscales is composed of an interrelated set of items, and each item is scored on a 5-point Likert scale. The scale ranges from 0 to 184, with higher scores indicating more severe heavy menstrual bleeding.	from signing the informed consent to 2 weeks after the last administration

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
To characterize the pharmacokinetic (PK) profile of BT-114143	Plasma concentration of BT-114143 will be measured and following PK parameters will be characterized: Maximum observed concentration (Cmax); Time to Cmax (Tmax); area under the plasma concentration-time curve (AUC) from the time 0 to the last quantifiable time point (AUC0-t); AUC from the time 0 to infinity (AUC0-inf); half-life (t1/2); apparent clearance (CL/F); apparent volume of distribution (Vz/F)	Three days after administration
Changes in Plasminogen Activity Results from Baseline	Blood samples will be collected to determine the changes in plasminogen activation over time.	Three days after administration
Prothrombin Time（PT）	The change of PT from baseline	Three days after administration
Activated Partial Thromboplastin Time（APTT）	The change in Activated Partial Thromboplastin Time (APTT) from baseline	3 days after administration
International Normalized Ratio（INR）	The change in INR (International Normalized Ratio) from baseline	3 days after administration
Thrombin Time（TT）	The change in TT (Thrombin Time) from baseline	3 days after administration
Fibrinogen（FIB）	The change in FIB (Fibrinogen) from baseline	3 days after administration
D-Dimer	The change in D-Dimer (D-Dimer) from baseline	3 days after administration
Changes in Thromboelastography (TEG) Parameters	Blood samples will be collect at each timepoints and TEG parameter (including R, K, Angle, MA, LY30, and CI values) will be measured to determine coagulation function of each subject.	3 days after administration

Collaborators and Investigators

• Sponsor: ScinnoHub Pharmaceutical Co., Ltd.

Study record dates

Study Major Dates

• Study Start (Actual): October 30, 2024
• Primary Completion (Actual): September 23, 2025
• Study Completion (Estimated): December 31, 2025

Study Registration Dates

• First Submitted: August 14, 2025
• First Submitted That Met QC Criteria: September 5, 2025
• First Posted (Estimated): September 11, 2025

Study Record Updates

• Last Update Posted (Actual): December 15, 2025
• Last Update Submitted That Met QC Criteria: December 12, 2025
• Last Verified: December 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Urogenital Diseases; Genital Diseases; Pathologic Processes; Female Urogenital Diseases; Female Urogenital Diseases and Pregnancy Complications; Uterine Diseases; Genital Diseases, Female; Hemorrhage; Uterine Hemorrhage; Pathological Conditions, Signs and Symptoms; Metrorrhagia; Investigative Techniques; Epidemiologic Research Design; Epidemiologic Methods; Research Design; Methods; Control Groups
• Other Study ID Numbers: BT-114143-I-02

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