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A Phase I, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of Single Ascending Doses of SIM0811 Injection in Healthy Chinese Adult Participants

NCT07345364 · Status: RECRUITING · Phase: PHASE1 · Type: INTERVENTIONAL · Enrollment: 72

Last updated 2026-05-20

No results posted yet for this study

Summary

This study plans to set up 5 dose groups across 7 cohorts, including intravenous bolus plus infusion administration as well as intravenous bolus alone. The study plans to enroll 8 participants per cohort (investigational drug: placebo = 6:2), including both males and females, totaling 56 healthy participants. The study begins with dose-escalation enrollment starting from Cohort 1. Each cohort receives a single dose, sequentially completing Cohorts 2, 3, 4, 5, 6, and 7. After each cohort's dosing is completed, a 7-day observation period is conducted for safety evaluation. If the termination criteria are not met, the study may proceed to the next dose level following assessment by the Safety Review Committee. By collecting adverse events, as well as abnormal indicators from vital signs, electrocardiograms, and laboratory tests, and collecting blood samples at planned time points to measure SIM0811 plasma concentration and thrombotic molecular markers, the study aims to evaluate the tolerability and safety of SIM0811 injection in Chinese healthy adult participants, characterize its pharmacokinetic profile after single-dose administration, and explore the change curves of thrombotic molecular markers (plasmin-α2 antiplasmin complex PIC, fibrin degradation products FDP)

Conditions

  • Health, Subjective

Interventions

DRUG

SIM0811

The study will employ a dose-escalation design starting from Cohort 1. Each cohort will receive a single administration, sequentially completing Cohort 2, Cohort 3, Cohort 4, Cohort 5 , Cohort 6, Cohort 7,Cohort 8 and Cohort 9. After administration in each cohort, participants will be observed for 7 days for safety evaluation. Provided no stopping criteria are met, escalation to the next dose level may proceed only after review by the Safety Review Committee (SRC).

DRUG

Placebo

The study will employ a dose-escalation design starting from Cohort 1. Each cohort will receive a single administration, sequentially completing Cohort 2, Cohort 3, Cohort 4, Cohort 5 , Cohort 6, Cohort 7 Cohort 8and Cohort 9. After administration in each cohort, participants will be observed for 7 days for safety evaluation. Provided no stopping criteria are met, escalation to the next dose level may proceed only after review by the Safety Review Committee (SRC).

Sponsors & Collaborators

  • Jiangsu Simcere Pharmaceutical Co., Ltd.

    lead INDUSTRY

Principal Investigators

  • yuguo chen · Qilu Hospital of Shandong University

  • wei zhao · Qilu Hospital of Shandong University

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
45 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2026-01-12
Primary Completion
2026-07-30
Completion
2026-08-31

Countries

  • China

Study Locations

More Related Trials

Entities

Drugs

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07345364 on ClinicalTrials.gov