ClinicalTrials.gg
RecruitingNCT07717905Updated Jul 22, 2026

A Study to Evaluate the Safety, Tolerability, Pharmacokinetics, Immunogenicity, Pharmacodynamics and Clinical Activity of BBT001 Following Intravenous Administration in Participants With Chronic Spontaneous Urticaria (CSU)

A Phase 1/2 interventional study of BBT001 and Placebo in Chronic Spontaneous Urticaria, sponsored by Bambusa Therapeutics. Recruiting at 10 sites in China. Open to participants aged 18 Years to 75 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-07-22.

Sponsored by Bambusa Therapeutics · Phase 1/2, Interventional, and Treatment

From the registry’s dates

  • Started Jun 2026; still recruiting 4 months later.

Help build ClinicalTrials.gg — short surveys, remote interviews or testing, in your language. Take part →

Phase
Phase 1/2
Study type
Interventional
Enrollment
48
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
All
01

Where this study stands

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

Among 34 studies in Chronic Urticaria with a site in China — 16 open to participants now, 20 under way, 5 of them phase 3. Chronic Urticaria · China.

Planned enrollment
22nd of 30
48 · median 110
Started
2026
with 10 others
Phase 1/2
4 of 34
4 open now
Primary completion
2027-12
later than 17 of 19 live
Registered
32nd of 34
by date
Lead sponsor
1 of 34
Bambusa Therapeutics

Among the 34 studies in Chronic Urticaria with a site in China, this one is the 22nd largest by planned enrollment of the 30 interventional ones that give a count, is one of 11 that started in 2026, is one of 4 in phase 1/2, reaches primary completion later than 17 of the 19 other live ones, and was the 32nd registered.

Chronic Urticaria

196 studies on the registry are indexed under Chronic Urticaria; 48 are open to participants now.

Browse Chronic Urticaria studies →

Open to participants now

16 of the 34 studies in Chronic Urticaria with a site in China are open now. Recruiting first, the newest first:

10 more — sign in →

All 16 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 25 Chronic Urticaria studies recruiting now, 11 (44%) set no upper age limit and 10 (40%) stop at 75 or younger; 1 takes children under 18; 6 take healthy volunteers.

This study: 18 Years to 75 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.

Was this useful?
Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 34 studies in Chronic Urticaria with a site in China, or all of them as a file.
02

Study summary

This is a Phase IIa, randomized, blinded, placebo controlled,Multiple-Ascending Dose study of BBT001 in adult patients with Chronic Spontaneous Urticaria.

Read the detailed description

The study consists of below cohorts:

Cohort A1 (biologic-naïve): 450 mg BBT001 (n = 8) or placebo (n = 4) Cohort A2 (biologic-experienced): 450 mg BBT001 (n = 8) or placebo (n = 4) Cohort A3 (biologic-naïve) (optional): 900 mg BBT001 (n = 8) or placebo (n = 4) Cohort A4 (biologic-experienced) (optional): 900 mg BBT001 (n = 8) or placebo (n = 4)

03

Conditions studied

  • Chronic Spontaneous Urticaria

Browse trials for

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Eligibility criteria

Inclusion Criteria: key inclusion criteria: 1)Male or female 18 to 75 years (inclusive) of age at time of consent. 2)Capped weight to be no more than 125 kg at screening.3)UAS7>=16; 4)Patients must have been on daily stable doses of H1-AH;5) Written obtained from the participant prior to performing any protocol-related procedures. For A2/A4 only: Participants who have received prior treatment with any biological products (e.g., omalizumab or dupilumab) . The last dose≥ 5 half-lives prior to randomization.

Exclusion Criteria: key exclusion criteria: 1)Inducible urticaria ; 2) Diseases with possible symptoms of urticaria or angioedema such as urticarial vasculitis, erythema multiforme, cutaneous mastocytosis ;3) Presence of skin morbidities other than CSU that may interfere with the assessment of the study outcomes; 4)History of herpes simplex infection; 5 )Serological abnormalities of infection at screening .

-

Terms in these criteria, in plain language(1)

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.

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.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Sequential assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
48 participants (estimated)

Study arms

  • Active comparator
    Cohort A1:BBT001 (450mg biologic naive)

    A multiple ascending dose (MAD) of 450 mg BBT001 will be administered to patients with chronic spontaneous urticaria (CSU) who are naïve to biologic therapy.

    Drug: BBT001

  • Placebo comparator
    Cohort A1:Placebo (450mg biologic naive)

    A multiple ascending dose (MAD) of 450 mg BBT001 will be administered to patients with chronic spontaneous urticaria (CSU)who are naïve to biologic therapy.

    Drug: Placebo

  • Active comparator
    Cohort A2:BBT001 (450mg biologic experienced)

    A multiple ascending dose (MAD) of 450 mg BBT001 will be administered to patients with chronic spontaneous urticaria (CSU) who are experienced to biologic therapy.

    Drug: BBT001

  • Placebo comparator
    Cohort A1:placebo (450mg biologic experienced)

    A multiple ascending dose (MAD) of 450 mg BBT001 will be administered to patients with chronic spontaneous urticaria (CSU) who are experienced to biologic therapy

    Drug: Placebo

  • Active comparator
    Cohort A3:BBT001 (900mg biologic naive)

    A multiple ascending dose (MAD) of 900 mg BBT001 will be administered to patients with chronic spontaneous urticaria (CSU) who are naïve to biologic therapy.

    Drug: BBT001

  • Placebo comparator
    Cohort A3:Placebo (900mg biologic naive)

    A multiple ascending dose (MAD) of 900 mg BBT001 will be administered to patients with chronic spontaneous urticaria (CSU) who are naïve to biologic therapy.

    Drug: Placebo

  • Active comparator
    Cohort A4:BBT001 (900mg biologic experienced)

    A multiple ascending dose (MAD) of 900 mg BBT001 will be administered to patients with chronic spontaneous urticaria (CSU) who are experienced to biologic therapy.

    Drug: BBT001

  • Placebo comparator
    Cohort A4:Placobo (900mg biologic experienced)

    A multiple ascending dose (MAD) of 900 mg BBT001 will be administered to patients with chronic spontaneous urticaria (CSU) who are experienced to biologic therapy.

    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 multiple administration of BBT001

    Incidence, relatedness, and severity of adverse events graded per NCI CTCAE v6.0.

    Time frame: - Up to Day 183 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: Up to Day 183 post first dose administratio

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

    Laboratory assessments include hematology, blood chemistry and coagulation test

    Time frame: Up to Day 183 post first dose administration

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

    Physical examination will be assessed

    Time frame: Up to Day 183 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: Up to Day 183 post first dose administration

Secondary outcomes

  1. 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 183 days post first dose administration]

  2. 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 183 days post first dose administration

  3. 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 183 days post first dose administration

  4. Pharmacokinetics parameters- maximum observed Concentration (Cmax)

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

    Time frame: specified timepoints pre-dose and up to 183 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 183 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 183 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 183 days post first dose administration

07

Study locations

1 of 10 sites recruiting
  • The Second Affiliated Hospital of Wannan Medical College
    Wuhu, Anhui 241001, China
    Not yet recruiting
  • Peking University People's Hospital, Beijing
    Beijing, Beijing Municipality 100032, China
    Recruiting
    • Jianzhong Zhang · Contactrmzjz@126.com · 010-88324516
    • cheng Zhou · Principal investigator
    • Jianzhong Zhou · Principal investigator
  • The Second Affiliated Hospital of Guangzhou Medical University
    Guangzhou, Guangdong 510260, China
    Not yet recruiting
    • Wenlin Yang · Contactgyeyyx@163.com · 020-34153066
    • Wenlin Yang · Principal investigator
  • Dermatology Hospital of Southern Medical University
    Guangzhou, Guangdong 510440, China
    Not yet recruiting
  • The First Hospital of Hebei Medical University
    Shijiazhuang, Hebei, China
    Not yet recruiting
    • Guoqiang Zhang · Contacthbydyygcp@163.com · 0311-87156653
    • Guoqiang Zhang · Principal investigator
  • Jingzhou Central Hospital
    Jinzhou, Hubei 434020, China
    Not yet recruiting
  • Wuxi Second People's Hospital,
    Wuxi, Jiangsu 214002, China
    Not yet recruiting
    • Xunyi Dai · Contactwx2hh@126.com · 0510-9612369
    • Xunyi Dai · Principal investigator
  • The Second Hospital of Shanxi Medical University
    Taiyuan, Shanxi 030000, China
    Not yet recruiting
    • Wenli Feng · Contact625544524@qq.com · 0351-4960130
    • Wenli Feng · Principal investigator
  • The Second Affiliated Hospital of Xi'an Jiaotong University
    Xi’an, Shanxi 710114, China
    Not yet recruiting
    • Songmei Geng · Contactgcp@xah2h.com · 029-87679000
    • Songmei Geng · Principal investigator
  • Hangzhou Third People's Hospital
    Hangzhou, Zhejiang 310009, China
    Not yet recruiting
    • Xingang WU · Contacthz3ygcp@163.com · 0571-87823189
    • Xingang WU · Principal investigator
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

Started Jun 2026 (actual). Primary completion is estimated for Dec 2027, 18 months after the start.

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

Registered
Jul 16, 2026
First posted
Jul 21, 2026
StartActual
Jun 29, 2026
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
NCT07717905
Lead sponsor
Bambusa Therapeutics
Responsible party
Sponsor
First posted
Jul 21, 2026
Start date
Jun 29, 2026
Primary completion
Dec 31, 2027 (estimated)
Completion
Jun 30, 2028 (estimated)
Last update
Jul 22, 2026

Study contacts

Tracy Ji, Study Director
Contact
tracy.ji@bambusatx.com
+86 18001322760

Oversight

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

Interested in this study?

Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.

Contact study team

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: BBT001

Start the discussion