ObesityPhase 1/2NCT06350812
A Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of PB-119 Injection in Chinese Obese Subjects
A Phase 1/2 study testing PB-119 in people with Obesity, run by PegBio Co., Ltd. at 1 site in China.
Trial summary
The trial is conducted in a single-center, randomized, double-blind, placebocontrolled, dose-increasing design. To evaluate the safety, tolerability, pharmacokinetics(PK) characteristics, efficacy and immunogenicity of PB-119 injection in Chinese obese subjects. Read more about this study
- Who is it for?
- Ages 18 to 60 yearsHealthy volunteers can take part
- Conditions the study is for
- Obesity
- What is being tested?
- PB-119
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 32 participants
- Where
- 1 siteChina
- Study dates
- 27 May 2024to 16 Dec 2024
- Phase
- Phase 1/2
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 60 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Chinese male or female subjects aged 18-60 years (both inclusive).
- Body weight ≥70 kg(male) or 60 kg(female), and body mass index (BMI)
- ≥30.0 kg/m2 at screening.
- Weight change <5% in the past 3 months before screening.
Who cannot join
- Fasting Plasma Glucose（FPG） ≥7.0mmol/L or glycosylated hemoglobin (HbA1c) ≥6.5% or diagnosed diabetes
- FPG <3.9 mmol/L at screening and/or a history of hypoglycemia.
- History of Cushing's syndrome, polycystic ovaries, or other hereditary endocrine disorders, or obesity caused by secondary factors such as cortisol hormones.
- Abnormal Thyroid-Stimulating hormone(TSH), Serum Free Triiodothyronine（FT3）, Serum Free Thyroxine（FT4） or diagnosed thyroid dysfunction
- History of multiple endocrine neoplasia syndrome type 2 (MEN-2) , medullary thyroid carcinoma (MTC) or Category 4 and above thyroid nodules by Thyroid ultrasound Chinese Ultrasound Thyroid Imaging Reporting and Data System （C-TIRADS）
- Diagnosed cardiovascular and cerebrovascular diseases with obvious clinical significance within 6 months before screening
Show all 12Show fewer
- Systolic blood pressure > 160 mmHg and/or diastolic blood pressure > 100 mmHg at screening or randomization.
- Time history from the starting point of P-wave to the starting point of QRS wave（PR intervals ）> 210 msec and/or QRS complex（QRS） > 120 msec and/or Corrected QT Interval（QTcF） > 450 msec at screening or randomization.
- Serum amylase or lipase > 3× upper limit of normal (ULN) at screening or before randomization, or previously diagnosed acute/chronic pancreatitis.
- Low density lipoprotein cholesterol(LDL-C) ≥4.40 mmol/L or triglyceride (TG) ≥5.65 mmol/L.
- Use of any approved or unapproved drugs or products that have an effect on body weight within 3 months prior to screening
- History of bariatric surgery for weight loss before screening.
Trial locations and contacts
1 site in 1 country.
China1 site
The Third XIANGYA Hospital of Central South University
Changsha, Hunan, 410013
About this study
Official title: A Single-center, Randomized, Double-blind, Placebo-controlled, Multiple Dose Escalating Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of PB-119 Injection in Chinese Obese Subjects
The trial is conducted in a single-center, randomized, double-blind, placebocontrolled, dose-increasing design. To evaluate the safety, tolerability, pharmacokinetics(PK) characteristics, efficacy and immunogenicity of PB-119 injection in Chinese obese subjects.
Read the detailed description
The trial is conducted in a single-center, randomized, double-blind, placebocontrolled, dose-increasing design. To evaluate the safety, tolerability, PK characteristics, efficacy and immunogenicity of PB-119 injection in Chinese obese subjects. The study consists of 1-2 cohort . 32 patients are planned to be included in each cohort (24 patients receive study drug，8 patients receive placebo) Subjects will receive treatment for 20 weeks after screening and complete 4 weeks of safety follow-up.
- Conditions
- Obesity
- Being tested
- PB-119, Placebo
- Medical subject headings
- Obesity
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
PB-119Drug
Administered subcutaneously once a week
PlaceboDrug
Administered subcutaneously once a week
| Study group | Role | What they receive |
|---|---|---|
| PB-119 | Experimental | PB-119 administered on the first day of week 1-20 according to the dose-escalation design Receives: Drug: PB-119 |
| Placebo | Placebo comparator | Matched placebo administered on the first day of week 1-20 according to the dose-escalation design Receives: Drug: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Incidence of Treatment-Emergent Adverse Events
Measured: From the first dosing (Day 1 ) of study drug until completion of the post treatment follow-up visit (24 week)
Secondary outcomes (6)
Pharmacokinetic profile
Cmax
Measured: From the first dose (Day 1 ) of study drug until 20 week
Pharmacokinetic profile
Tmax
Measured: From the first dose (Day 1 ) of study drug until 20 week
Pharmacokinetic profile
area under the curve0(AUC0)-tau
Measured: From the first dose (Day 1 ) of study drug until 20 week
Pharmacokinetic profile
AUC0-last
Measured: From the first dose (Day 1 ) of study drug until 20 week
Effectiveness index
Change in body weight from baseline
Measured: week 20
Effectiveness index
Proportion of participants with ≥5% weight loss
Measured: week 20
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted5 Apr 2024
- Study start27 May 2024
- Primary completion16 Nov 2024
- Study completion16 Dec 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for ObesityStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1/2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 32 participants (actual)
Sponsor and investigators
- Lead sponsor
- PegBio Co., Ltd.
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Guoping Yang, Ph D, Principal investigator, The Third Xiangya Hospital of Central South UniversityPing Jin, Ph D, Principal investigator, The Third Xiangya Hospital of Central South University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06350812
- Sponsor's protocol ID
- PB119110
- Status last verified
- Oct 2025
- First submitted
- 18 Mar 2024
- Last updated
- 19 Nov 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 19 Nov 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Single-center, Randomized, Double-blind, Placebo-controlled, Multiple Dose Escalating Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of PB-119 Injection in Chinese Obese Subjects
- ClinicalTrials.gov ID
- NCT06350812
- Acronym / sponsor ID
- PB119110
- Conditions
- Obesity
- Phase
- Phase 1/2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 32 participants (actual)
- Lead sponsor
- PegBio Co., Ltd.University, hospital or other
- Study start
- 27 May 2024 (actual)
- Primary completion
- 16 Nov 2024 (actual)
- Study completion
- 16 Dec 2024 (actual)
- First posted
- 5 Apr 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The trial is conducted in a single-center, randomized, double-blind, placebocontrolled, dose-increasing design. To evaluate the safety, tolerability, pharmacokinetics(PK) characteristics, efficacy and immunogenicity of PB-119 injection in Chinese obese subjects.
Detailed description
The trial is conducted in a single-center, randomized, double-blind, placebocontrolled, dose-increasing design. To evaluate the safety, tolerability, PK characteristics, efficacy and immunogenicity of PB-119 injection in Chinese obese subjects. The study consists of 1-2 cohort . 32 patients are planned to be included in each cohort (24 patients receive study drug，8 patients receive placebo) Subjects will receive treatment for 20 weeks after screening and complete 4 weeks of safety follow-up.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| PB-119 | Experimental | Drug: PB-119PB-119 administered on the first day of week 1-20 according to the dose-escalation design |
| Placebo | Placebo comparator | Drug: PlaceboMatched placebo administered on the first day of week 1-20 according to the dose-escalation design |
Who may qualify
- Ages
- 18 to 60 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (4 listed)
- Chinese male or female subjects aged 18-60 years (both inclusive).
- Body weight ≥70 kg(male) or 60 kg(female), and body mass index (BMI)
- ≥30.0 kg/m2 at screening.
- Weight change <5% in the past 3 months before screening.
Key exclusion criteria (12 listed)
- Fasting Plasma Glucose（FPG） ≥7.0mmol/L or glycosylated hemoglobin (HbA1c) ≥6.5% or diagnosed diabetes
- FPG <3.9 mmol/L at screening and/or a history of hypoglycemia.
- History of Cushing's syndrome, polycystic ovaries, or other hereditary endocrine disorders, or obesity caused by secondary factors such as cortisol hormones.
- Abnormal Thyroid-Stimulating hormone(TSH), Serum Free Triiodothyronine（FT3）, Serum Free Thyroxine（FT4） or diagnosed thyroid dysfunction
- History of multiple endocrine neoplasia syndrome type 2 (MEN-2) , medullary thyroid carcinoma (MTC) or Category 4 and above thyroid nodules by Thyroid ultrasound Chinese Ultrasound Thyroid Imaging Reporting and Data System （C-TIRADS）
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| PB-119Administered subcutaneously once a week | Drug | PB-119 |
| PlaceboAdministered subcutaneously once a week | Drug | Placebo |
Primary outcome
Incidence of Treatment-Emergent Adverse Events
Time frame: From the first dosing (Day 1 ) of study drug until completion of the post treatment follow-up visit (24 week)
6 secondary outcomes
Pharmacokinetic profile
Time frame: From the first dose (Day 1 ) of study drug until 20 week
Pharmacokinetic profile
Time frame: From the first dose (Day 1 ) of study drug until 20 week
Pharmacokinetic profile
Time frame: From the first dose (Day 1 ) of study drug until 20 week
Pharmacokinetic profile
Time frame: From the first dose (Day 1 ) of study drug until 20 week
Effectiveness index
Time frame: week 20
Effectiveness index
Time frame: week 20
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 19 Nov 2025.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Guoping Yang, Ph D principal investigator
The Third Xiangya Hospital of Central South University
Ping Jin, Ph D principal investigator
The Third Xiangya Hospital of Central South University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1/2 study testing PB-119 in people with Obesity, run by PegBio Co., Ltd. at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 12 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 19 Nov 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this combined phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Incidence of Treatment-Emergent Adverse Events (time frame: From the first dosing (Day 1 ) of study drug until completion of the post treatment follow-up visit (24 week)). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 19 Nov 2025; AzTrials last refreshed its copy on 6 Nov 2026.