ClinicalTrials.gg
RecruitingNCT07239947Updated Jul 22, 2026

A Study of BBT001 in Healthy Volunteers (HVs) and in Adult Patients With Moderate to Severe Atopic Dermatitis (AD)

A Phase 1 interventional study of BBT001 and Placebo in Atopic Dermatitis, sponsored by Bambusa Therapeutics. Recruiting at 10 sites in China. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-07-22.

Sponsored by Bambusa Therapeutics · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Started Aug 2025; still recruiting 1 year 3 months later.

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Phase
Phase 1
Study type
Interventional
Enrollment
99
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 205 studies in Dermatitis, Atopic with a site in China — 64 open to participants now, 81 under way, 29 of them phase 3. Dermatitis, Atopic · China.

Planned enrollment
132nd of 189
99 · median 165
Started
2025
with 33 others
Phase 1
38 of 205
14 open now
Primary completion
2027-12
later than 59 of 80 live
Registered
165th of 205
by date

Among the 205 studies in Dermatitis, Atopic with a site in China, this one is the 132nd largest by planned enrollment of the 189 interventional ones that give a count, is one of 34 that started in 2025, is one of 38 in phase 1, reaches primary completion later than 59 of the 80 other live ones, and was the 165th registered.

Dermatitis, Atopic

1,592 studies on the registry are indexed under Dermatitis, Atopic; 287 are open to participants now.

Browse Dermatitis, Atopic studies →

Open to participants now

64 of the 205 studies in Dermatitis, Atopic with a site in China are open now. Recruiting first, the newest first:

59 more — sign in →

All 64 open studies →

A study can be open while its sites in China have not opened yet or have stopped. Only those recruiting at a site in China →

Who these studies take

Of the 195 Dermatitis, Atopic studies recruiting now, 83 (43%) set no upper age limit and 96 (49%) stop at 75 or younger; 94 take children under 18; 52 take healthy volunteers.

This study: 18 Years to 65 Years · all sexes · healthy volunteers too.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 205 studies in Dermatitis, Atopic with a site in China, or all of them as a file.
02

Study summary

This is a Phase 1, randomized, blinded, placebo controlled, single ascending dose (SAD) study of BBT001 in healthy volunteers (HVs) and adult patients with moderate to severe Atopic Dermatitis (AD).

Read the detailed description

The study consists of two parts:

Part A (single dose in HVs in sequential ascending dose cohorts, SAD in HVs part) Part B (seven repeated doses in patients with moderate to severe AD, multiple ascending Dose in patients part)

03

Conditions studied

  • Atopic Dermatitis

Browse trials for

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Eligibility criteria

Key Inclusion Criteria ( Part A and B):

  1. Age of 18-65 years.
  2. between 18-28 kg/m², capped at 120 kg.
  3. Negative pregnancy tests for women of .
  4. Willingness to refrain from alcohol consumption for 24 hours prior to each study visit.
  5. Non-smokers, healthy current smokers (≤5 cigarettes/day), or ex-smokers.
  6. Adequate use (for men and women of childbearing potential).
  7. No abnormalities or history of relevant diseases.

Key Inclusion Criteria (Part B only):

  1. Must have dermatologist-confirmed chronic atopic dermatitis (≥12 months). Inadequate response to topical treatments or where they are medically inadvisable.
  2. Moderate to severe atopic dermatitis
  3. Validated investigator's global assessment for atopic dermatitis (vIGA-ADTM) score ≥3
  4. Atopic lesions cover ≥10% of body surface area (BSA)
  5. Average peak pruritus numeric rating scale (PP-NRS) score ≥4 in the 7 days before randomization.
  6. Eczema Area and Severity Index (EASI) score ≥16 at screening and randomization visits.
  7. (for biologic/JAKi experienced subjects) Patients with prior systemic exposure to the following agents are eligible for enrollment: biologics targeting IL-4/IL-13 or IL-31 pathway or JAK inhibitors.

Key Exclusion Criteria for (Part A\&B)

  1. Significant health issues, such as: diabetes, positive tests for (HIV), virus (HCV), or surface antigen (HBsAg), immunodeficiencies, diseases, or cancer, history of conditions predisposing to infections.
  2. History of major metabolic, dermatological, liver, kidney, hematological, or other significant disorders.
  3. Clinically relevant abnormal lab results, including low blood counts, liver issues, or abnormal kidney function.
  4. Positive drug/alcohol tests or abnormal vital signs at screening or Day -1.
  5. Abnormal (ECG) findings
  6. History of drug/alcohol abuse in the past 2 years.
  7. Donated >500mL blood within 2 months of screening.
  8. History of severe allergic reactions or .

Key Exclusion Criteria for (Part B only)

  1. Skin diseases other than atopic dermatitis, significant tattoos, or scarring.
  2. Receipt of immunoglobulin or blood products within 30 days.
  3. Atopic dermatitis with ocular symptoms or chronic ocular use.
  4. Chronic pruritus from conditions other than atopic dermatitis.
  5. Acute/treated infections or chronic skin infections.
  6. Current use of sedating antihistamines or corticosteroids.
Terms in these criteria, in plain language(11)

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.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

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.

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.

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.

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.

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.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

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.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Sequential assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
99 participants (estimated)

Study arms

  • Experimental
    Part A -BBT001(Single Ascending Dose)

    A single dose of BBT001 will be administered in healthy volunteers

    Drug: BBT001

  • Experimental
    Part A- Placebo(Single Ascending Dose)

    A single dose of Placebo will be administered in healthy volunteers

    Drug: Placebo

  • Experimental
    Part B- BBT001(Multiple Ascending Dose)

    Seven repeat doses of BBT001 will be administered in patients with moderate to severe atopic dermatitis

    Drug: BBT001

  • Experimental
    Part B -Placebo (Multiple Ascending Dose))

    Seven repeat doses of Placebo will be administered in patients with moderate to severe atopic dermatitis

    Drug: Placebo

Interventions

  • DrugBBT001

    BBT001 will be administered

  • DrugPlacebo

    Placebo will be administered

06

What researchers measure

Primary outcomes

  1. Number of participants with adverse events following single and multiple administration of BBT001

    Incidence, relatedness, and severity of adverse events graded per NCI CTCAE v5.0.

    Time frame: Part A- Up to Day 141; Part B - Up to Day 169 post first dose administration

  2. Number of participants with change in vital sign measurements following treatment administration.

    Blood pressure and heart rate will be assessed.

    Time frame: Part A- Up to Day 141; Part B-Up to Day 169 post first dose administration

  3. Number of participants with change in serum blood parameters.

    Laboratory assessments include hematology, blood chemistry and coagulation test

    Time frame: Part A- Up to Day 141; Part B - Up to Day 169 post first dose administration

  4. Number of participants with change in physical examination following treatment administration.

    Physical examination will be assessed.

    Time frame: Part A- Up to Day 141; Part B - Up to Day 169 post first dose administration

  5. Number of participants with change in 12-lead electrocardiogram (ECG) results measurements following treatment administration.

    12-lead ECG will be tested at individual sites using sites' equipment and will be assessed.

    Time frame: Part A- Up to Day 141; Part B - Up to Day 169 post first dose administration

Secondary outcomes

  1. Pharmacokinetics parameters- maximum observed Concentration (Cmax)

    Maximum observed concentration of the study drug in serum will be analyzed for all subjects.

    Time frame: At specified timepoints pre-dose and up to 169 days post first dose administration.

  2. Pharmacokinetics parameters- Time for maximum observed Concentration (Tmax)

    Serum PK Tmax will be analyzed for all subjects

    Time frame: At specified timepoints pre-dose and up to 169 days post first dose administration

  3. Pharmacokinetics parameters- Area under the curve (AUC)

    Area under the curve of the study drug in serum will be analyzed for all subjects

    Time frame: At specified timepoints pre-dose and up to 169 days post first dose administration

  4. Pharmacokinetics parameters- Volume of distribution (Vz)

    Volume of distribution of the study drug in serum will be analyzed for all subjects

    Time frame: At specified timepoints pre-dose and up to 169 days post first dose administration

  5. Pharmacokinetics parameters- Total clearance (CL)

    Total clearance of the study drug in serum will be analyzed for all subjects

    Time frame: At specified timepoints pre-dose and up to 169 days post first dose administration

  6. Pharmacokinetics parameters- - Elimination Half-life (t1/2).

    Elimination half-life of the study drug in serum will be analyzed for all subjects

    Time frame: At specified timepoints pre-dose and up to 169 days post first dose administration

  7. The immunogenicity of BBT001 is measured as the number and percentage of subjects who develop Anti-Drug Antibodies (ADA).

    Serum Anti-Drug Antibodies will be analyzed for all subjects

    Time frame: At specified timepoints pre-dose and up to 169 days post first dose administration

07

Study locations

1 of 10 sites recruiting
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 reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Aug 2025 (actual). Primary completion is estimated for Dec 2027, 28 months after the start.

Of 114 industry-sponsored phase 1 interventional studies under Dermatitis, Atopic, half reached primary completion within 12 months of starting (the median), counting those still running; a quarter within 5 and three quarters within 20. This study's planned 28 months is above that.

Counting every sponsor, half of 131 studies reached it within 13 months; a quarter within 5 and three quarters within 20.

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

Registered
Sep 28, 2025
First posted
Nov 20, 2025
StartActual
Aug 9, 2025
Primary completionEst.
Dec 31, 2027
CompletionEst.
Jun 30, 2028
Last update
Jul 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 Jul 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
NCT07239947
Lead sponsor
Bambusa Therapeutics
Responsible party
Sponsor
First posted
Nov 20, 2025
Start date
Aug 9, 2025
Primary completion
Dec 31, 2027 (estimated)
Completion
Jun 30, 2028 (estimated)
Last update
Jul 22, 2026

Study contacts

Tracy Ji
Contact
tracy.ji@bambusatx.com
+86 18001322760
Tracy Ji
study director · Bambusa (Beijing) Therapeutics Co., Ltd.

Oversight

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

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Studies of the drug tested here: BBT001

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