ClinicalTrials.gg
CompletedNCT07545018LLP2A-AleUpdated Apr 22, 2026

RAB001(LLP2A-Ale) in Healthy Subjects

A Phase 1 interventional study of RAB001 400 μg/kg group and RAB001 750 μg/kg group in Osteonecrosis of the Femoral Head, sponsored by ZhongShan LaiBo RuiChen BioMedicine Co.,Ltd.. Completed at 1 site in China. Open to participants aged 18 Years to 60 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-04-22.

Sponsored by ZhongShan LaiBo RuiChen BioMedicine Co.,Ltd. · Phase 1, Interventional, and Health services research

From the registry’s dates

  • Registered 3 years 1 month after the study started (first participant enrolled Feb 2023, registered Apr 2026).

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Phase
Phase 1
Study type
Interventional
Enrollment
16
Allocation
Randomized
Ages
18 Years to 60 Years
Sex
All
01

Study summary

This trial is a single center, randomized, double-blind, placebo-controlled dose escalation study aimed at examining the safety, tolerability, and pharmacokinetics/pharmacodynamics of single and multiple injections of RAB001 in healthy subjects.

According to the results of Phase I clinical trials abroad, two dose groups (400 μ g/kg and 750 μ g/kg) were established, with 8 healthy subjects enrolled in each dose group (6 in the experimental group and 2 in the placebo group), for a total of 16 healthy subjects. Each dose group is divided into two stages.

Phase 1: Single dose administration phase Subjects who meet the inclusion criteria will first undergo a single dose study in the 400 μ g/kg dose group. Blood samples will be collected at predetermined time points for single dose PK, PD, and immunogenicity evaluation. After the single dose, safety and tolerance data will be collected for 14 days. If the subjects are tolerant, a single dose study in the 750 μ g/kg dose group can be conducted. After the dose increases to the maximum dose of 750 μ g/kg as designed in this experiment, the next dose will not be administered.

Phase 2: Multiple administration phase Single dose administration is combined with multiple dose administration. If the subjects can tolerate it during the single dose phase, they will enter the multiple dose study phase, which will be administered once every 2 weeks, on days 15, 29, and 43 respectively. Collect blood samples at predetermined time points for PK, PD, and immunogenicity evaluation, observe for 14 days after the last administration, and collect safety and tolerability data.

This experiment adopts a step-by-step increasing method for dose escalation, and the next dose group must complete the safety and tolerability evaluation of a single dose in the previous dose group before starting. Each subject only receives one corresponding dose.

02

Conditions studied

  • Osteonecrosis of the Femoral Head

Keywords

  • Osteonecrosis
03

In context

Legg-Calve-Perthes Disease

25 studies on the registry are indexed under Legg-Calve-Perthes Disease; 7 are open to participants now.

This study's enrollment of 16 is below the median of 30 across 15 interventional studies indexed under Legg-Calve-Perthes Disease.

Browse Legg-Calve-Perthes Disease studies →

Lead sponsor

ZhongShan LaiBo RuiChen BioMedicine Co.,Ltd. is the lead sponsor of 3 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Male body weight should be at least 50.0 kg, female body weight should be at least 45 kg; (BMI) should be between 19.0-26.0 kg/m2 (including boundary values);
  • Can understand the form, voluntarily participate and sign the informed consent form;
  • Capable of completing experiments in accordance with the research protocol.

Exclusion criteria

Exclusion Criteria:

  1. During the screening period, vital signs, physical examination, 12 lead examination, and laboratory tests (including blood routine, urine routine, blood biochemistry, and coagulation function) were determined by the researchers to be abnormalities;
  2. Suffering from the blood system, circulatory system, and digestive system Individuals with a history of serious clinical diseases such as systemic, urinary, respiratory, nervous, immune, endocrine, malignant tumors, mental disorders, and metabolic abnormalities, or any other diseases or physiological conditions that can interfere with test results;
  3. Individuals with a significant history of allergic reactions in clinical practice, especially drug allergies, or those known to be allergic to this product;
  4. surface antigen (HBsAg), virus (HCV) antibody, (HIV) antibody and treponema pallidum (TP) antibody test, any of which is positive;
  5. Individuals with positive urine screening for drug abuse (including morphine, methamphetamine, ketamine, methylenedioxymethamphetamine, tetrahydrocannabinol);
  6. Individuals with a history of drug use or substance abuse (including the use of prohibited substances for medical use and controlled drugs);
  7. Screening for those who have undergone critical surgery within the previous 3 months or plan to undergo surgery during the trial period, as well as those who have undergone surgery that may affect drug absorption, distribution, metabolism, and excretion;
  8. Screening participants who have participated in any clinical trial as subjects within the first 3 months;
  9. Individuals who have donated blood or lost blood/plasma greater than 400 mL within the first 3 months of screening (excluding female physiological bleeding);
  10. Alcoholics (i.e. males drinking more than 28 standard units of alcohol per week and females drinking more than 21 standard units of alcohol per week, with 1 standard unit containing 14 g of alcohol, such as 360 mL of beer or 45 mL of 40% spirits or 150 mL of wine) or those who have frequently consumed alcohol (i.e. drinking more than 14 standard units of alcohol per week) within the 6 months prior to screening, or those who cannot abstain from alcohol during the trial period, or those who have a positive breathalyzer test;
  11. Individuals who have taken any prescription or over-the-counter drugs, as well as any functional vitamins or herbal products within the 14 days prior to screening;
  12. Those who have consumed excessive amounts of tea, coffee, or caffeinated beverages for a long time in the past (8 or more cups per day, 1 cup=250 mL);
  13. It cannot be guaranteed that vigorous exercise, smoking, and special diets (including grapefruit, chocolate, tea, cola, or any caffeinated food or beverage, alcoholic beverage, or other food or beverage that affects drug absorption, distribution, metabolism, or excretion) will be prohibited from 48 hours before administration until the last blood collection;
  14. Pregnant or lactating women, or female subjects who have had unprotected sex within two weeks prior to screening, or female subjects who have a positive blood pregnancy test; Female and male participants (or their partners) who have had fertility plans or donated sperm/eggs throughout the entire trial period and within 6 months after the end of the study, and who are unwilling to use one or more measures during the trial period and within 6 months after the end of the study;
  15. Those who cannot tolerate venipuncture or difficulty in venous blood collection;
  16. Individuals with a history of fainting from needles or blood, or known severe bleeding tendencies;
  17. Those who have special dietary requirements and cannot follow a uniform diet;
  18. The researchers believe that there are any circumstances that may affect the provision of or adherence to the trial protocol by the subjects, or that the participation of the subjects in the trial may affect the trial results or their own safety.
Terms in these criteria, in plain language(8)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

05

Study design

Phase
Phase 1
Primary purpose
Health services research
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
16 participants (actual)

Study arms

  • Experimental
    experimental group

    The subjects received intravenous administration of RAB001

    Drug: RAB001 400 μg/kg group · Drug: RAB001 750 μg/kg group

  • Placebo comparator
    Control group

    The subjects received intravenous administration of normal saline

    Drug: Normal saline

Interventions

  • DrugRAB001 400 μg/kg group

    The subjects received intravenous administration of RAB001 400 μ g/kg on day 1、15、29、43

  • DrugRAB001 750 μg/kg group

    The subjects received intravenous administration of RAB001 750 μ g/kg on day 1、15、29、43

  • DrugNormal saline

    The subjects received intravenous administration of normal saline on day 1、15、29、43

06

What researchers measure

Primary outcomes

  1. Adverse events

    Adverse events,evaluate the safety of single injections of RAB001 at different doses

    Time frame: 14 days after single injections

  2. Serious adverse events

    serious adverse events during the study

    Time frame: 14 days after single administration

  3. Adverse events

    Adverse events evaluate the safety and tolerability of multiple injections of RAB001 at different doses

    Time frame: 14 days after multiple administrations

  4. Serious adverse events

    Serious adverse events during the study,evaluate the safety of multiple injections of RAB001 at different doses

    Time frame: 14 days after multiple administrations

Secondary outcomes

  1. PK parameter Cmax

    PK parameter Cmax :Maximum peak plasma concentration (Cmax)

    Time frame: The 0-24 hours after dosing on Day 1 and the 0-24 hours after dosing on Day 15

  2. PK parameter AUC0-t

    PK parameter AUC0-t:Area under the concentration-time curve (AUC0-t) from time zero to time "t" .

    Time frame: The 0-24 hours after dosing on Day 1 and the 0-24 hours after dosing on Day 15.

  3. PK parameter AUC0-∞

    PK parameter AUC0-∞:AUC from time zero to infinity (AUC0-∞) .

    Time frame: The 0-24 hours after dosing on Day 1 and the 0-24 hours after dosing on Day 15.

  4. PK parameter Tmax

    PK parameter Tmax.Time of Cmax (Tmax).

    Time frame: The 0-24 hours after dosing on Day 1 and the 0-24 hours after dosing on Day 15.

  5. PK parameter T1/2z

    PK parameter T1/2z:Terminal-phase elimination half-life (t1/2) .

    Time frame: The 0-24 hours after dosing on Day 1 and the 0-24 hours after dosing on Day 15.

  6. PK parameter-Vz/F

    PK parameter-Vz/F:Apparent Volume of Distribution During the Terminal Phase (Vz/F) of RAB001 in Plasma

    Time frame: The 0-24 hours after dosing on Day 1 and the 0-24 hours after dosing on Day 15.

  7. PK parameter-CL

    PK parameter-CL:Systemic Clearance (CL) of RAB001

    Time frame: The 0-24 hours after dosing on Day 1 and the 0-24 hours after dosing on Day 15.

  8. PK parameter λz

    PK parameter λz:Apparent Terminal Elimination Rate Constant (λZ) of

    Time frame: The 0-24 hours after dosing on Day 1 and the 0-24 hours after dosing on Day 15.

  9. PK Parameter: CLss

    PK Parameter: CLss , the apparent systemic clearance from plasma observed during a dosing interval at steady state following extravascular administration

    Time frame: The 0-24 hours after dosing on Day 1 and the 0-24 hours after dosing on Day 15.

  10. Bone turnover marker: BALP

    Change in Serum Bone Alkaline Phosphatase (BALP) Level

    Time frame: Day 1、8 、15、29、43 、 57

  11. Bone turnover marker: PINP levels

    PINP (N-terminal Propeptide of Type I Procollagen) Bone Turnover Marker Levels

    Time frame: Day 1、8 、15、29、43 、57

  12. Bone turnover marker: Osteocalcin (OC) Levels

    the bone turnover marker : Osteocalcin (OC) Levels

    Time frame: Day 1、8 、15、29、43 、 57

  13. Bone turnover marker:CTX-I Levels

    CTX-I (C-terminal Telopeptide of Type I Collagen )Levels the bone turnover marker

    Time frame: Day 1、8 、15、29、43 、57

  14. Bone turnover marker: VEGF

    Bone turnover marker: VEGF vascular endothelial growth factor

    Time frame: Day 1、8 、15、29、43、57

07

Study locations

1 site
  • Hebei University Affiliated Hospital
    Baoding, Hebei 071000, China
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Feb 2023 to primary completion in Jul 2023, 4 months.

How these figures are worked out, and which studies are left out of them.

Registered
Apr 2, 2026
First posted
Apr 22, 2026
StartActual
Feb 10, 2023
Primary completionActual
Jul 5, 2023
CompletionActual
Jul 5, 2023
Last update
Apr 22, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Apr 22, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07545018
Lead sponsor
ZhongShan LaiBo RuiChen BioMedicine Co.,Ltd.
Responsible party
Sponsor
First posted
Apr 22, 2026
Start date
Feb 10, 2023
Primary completion
Jul 5, 2023
Completion
Jul 5, 2023
Last update
Apr 22, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Apr 2026. You cannot join it, but the record below documents what was studied.

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