A Study of Single and Multiple Doses of LP-003 in Healthy Adult Participants

NCT ID: NCT06294288

Last Updated: 2025-12-12

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE1

Total Enrollment

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-07-13

Study Completion Date

2024-03-04

Brief Summary

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The purpose of this study is to evaluate safety, tolerability, immunogenicity, pharmacokinetics, pharmacodynamics, and efficacy of LP-003 in healthy volunteers. The study will be conducted in 2 parts: Part 1, the single ascending dose (SAD) is the first in human (FIH) study of LP-003 and Part 2, multiple ascending dose (MAD).

Detailed Description

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Conditions

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Chronic Spontaneous Urticaria

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Caregivers Investigators

Study Groups

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Cohort 1: LP-003 Dose 1 (Single)

Group Type EXPERIMENTAL

LP-003 Dose 1 (Single)

Intervention Type BIOLOGICAL

A single dose of LP-003 (Dose 1) was administered intravenously.

Cohort 2: LP-003 Dose 2 (Single)

Group Type EXPERIMENTAL

LP-003 Dose 2 (Single)

Intervention Type BIOLOGICAL

A single dose of LP-003 (Dose 2) was administered intravenously.

Cohort 3: LP-003 Dose 3 (Single)

Group Type EXPERIMENTAL

LP-003 Dose 3 (Single)

Intervention Type BIOLOGICAL

A single dose of LP-003 (Dose 3) was administered intravenously.

Cohort 4: LP-003 Dose 4 (Single)

Group Type EXPERIMENTAL

LP-003 Dose 4 (Single)

Intervention Type BIOLOGICAL

A single dose of LP-003 (Dose 4) was administered intravenously.

Cohort 5: LP-003 Dose 5 (Single)

Group Type EXPERIMENTAL

LP-003 Dose 5 (Single)

Intervention Type BIOLOGICAL

A single dose of LP-003 (Dose 5) was administered intravenously.

Cohort 6: Placebo (Single)

Group Type PLACEBO_COMPARATOR

Placebo (Single)

Intervention Type BIOLOGICAL

A single dose of placebo was administered intravenously.

Cohort 7: LP-003 Dose 6 (Multiple)

Group Type EXPERIMENTAL

LP-003 Dose 6 (Multiple)

Intervention Type BIOLOGICAL

LP-003 (Dose 6) was administered multiple times subcutaneously.

Cohort 8: LP-003 Dose 7 (Multiple)

Group Type EXPERIMENTAL

LP-003 Dose 7 (Multiple)

Intervention Type BIOLOGICAL

LP-003 (Dose 7) was administered multiple times subcutaneously.

Cohort 9: LP-003 Dose 8 (Multiple)

Group Type EXPERIMENTAL

LP-003 Dose 8 (Multiple)

Intervention Type BIOLOGICAL

LP-003 (Dose 8) was administered multiple times subcutaneously.

Cohort 10: Placebo (Multiple)

Group Type PLACEBO_COMPARATOR

Placebo (Multiple)

Intervention Type BIOLOGICAL

Placebo was administered multiple times subcutaneously.

Interventions

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LP-003 Dose 1 (Single)

A single dose of LP-003 (Dose 1) was administered intravenously.

Intervention Type BIOLOGICAL

LP-003 Dose 2 (Single)

A single dose of LP-003 (Dose 2) was administered intravenously.

Intervention Type BIOLOGICAL

LP-003 Dose 3 (Single)

A single dose of LP-003 (Dose 3) was administered intravenously.

Intervention Type BIOLOGICAL

LP-003 Dose 4 (Single)

A single dose of LP-003 (Dose 4) was administered intravenously.

Intervention Type BIOLOGICAL

LP-003 Dose 5 (Single)

A single dose of LP-003 (Dose 5) was administered intravenously.

Intervention Type BIOLOGICAL

Placebo (Single)

A single dose of placebo was administered intravenously.

Intervention Type BIOLOGICAL

LP-003 Dose 6 (Multiple)

LP-003 (Dose 6) was administered multiple times subcutaneously.

Intervention Type BIOLOGICAL

LP-003 Dose 7 (Multiple)

LP-003 (Dose 7) was administered multiple times subcutaneously.

Intervention Type BIOLOGICAL

LP-003 Dose 8 (Multiple)

LP-003 (Dose 8) was administered multiple times subcutaneously.

Intervention Type BIOLOGICAL

Placebo (Multiple)

Placebo was administered multiple times subcutaneously.

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

1. Healthy males or females aged 18 through 50 years
2. Male subjects must weigh ≥50 kg, and female subjects must weigh ≥45 kg, with a BMI between 19.0 and 28.0 kg/m² (inclusive).
3. Male subjects and their partners or female subjects must agree to use one or more non-pharmaceutical contraceptive methods (such as total abstinence, condoms, Iuds, partner ligation, etc.) during the trial period and for 6 months after the trial, and do not plan to donate sperm or eggs.
4. The subjects fully understand the purpose, nature, method and possible adverse reactions of the experiment, and voluntarily participate in the experiment and sign the informed consent.
5. The subjects were able to communicate well with the researchers and complete the study according to the protocol.

Exclusion Criteria

1. People who are allergic to the experimental drug and any of its excipients, have a history of allergy to monoclonal antibodies, and are allergic to multiple drugs and food.
2. Patients who have been or are currently suffering from any clinically serious diseases such as circulatory system, endocrine system, nervous system, digestive system, respiratory system, urogenital system, hematology, immunology, psychiatric and metabolic abnormalities, or any other diseases that can interfere with the test results.
3. Patients who had undergone surgery within 3 months before the trial that the researchers judged would affect drug absorption, distribution, metabolism, and excretion, or had surgery within 4 weeks prior to the trial, or planned to have surgery during the study period.
4. Any history of infection within 14 days prior to administration.
5. A person who is currently infected with parasites or has traveled to an endemic area within the last 3 months or 24 weeks prior to administration.
6. Pregnant and lactating women.
7. Hepatitis B surface antigen, hepatitis C virus antibodies, human immunodeficiency virus antibodies, treponema pallidum antibodies A positive person.
8. Patients who have received any biological agent (including antibodies or derivatives such as omalizumab) within 16 weeks prior to administration (or 5 half-lives, selecting the longer time period).
9. Participants who had participated in other clinical trials within 3 months prior to screening.
10. The investigator deems any condition unsuitable for study participation.
Minimum Eligible Age

18 Years

Maximum Eligible Age

50 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Longbio Pharma

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Xueying Ding

Role: PRINCIPAL_INVESTIGATOR

Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine

Locations

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Shanghai General Hospital

Shanghai, Shanghai Municipality, China

Site Status

Countries

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China

Other Identifiers

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P-10-LP003-2022-01

Identifier Type: -

Identifier Source: org_study_id

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