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Rademikibart

Phase 2

Asthma Acute | Small molecule | Respiratory |Connect Biopharma Holdings Limited|Last Updated: Aug 27, 2026

Target and mechanism

Molecular targetIL-4Rα
ModalitySmall molecule

Also known as Rademikibart in prefilled syringe

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials2
Total Enrollment200

FDA Designations

No designations recorded

Clinical trial landscape

Rademikibart · 3 trials · 3 indications

Phase 2 3
NCT07705737Rademikibart IV for Acute Asthma and COPD ExacerbationAsthma Acute
RECRUITING40 Analytics
NCT06940154Rademikibart Add-on Treatment of an Acute COPD Exacerbation (Seabreeze STAT COPD)COPD Acute Exacerbation
ACTIVE NOT_RECRUITING160 Analytics
NCT06940141Rademikibart Add-on Treatment of an Acute Asthma Exacerbation (Seabreeze STAT Asthma)Asthma Acute
ACTIVE NOT_RECRUITING160 Analytics
PHASE2RECRUITING
Rademikibart IV for Acute Asthma and COPD Exacerbation
Asthma AcuteUnlock trial analytics
PHASE2ACTIVE NOT_RECRUITING
Rademikibart Add-on Treatment of an Acute COPD Exacerbation (Seabreeze STAT COPD)
COPD Acute ExacerbationUnlock trial analytics
PHASE2ACTIVE NOT_RECRUITING
Rademikibart Add-on Treatment of an Acute Asthma Exacerbation (Seabreeze STAT Asthma)
Asthma AcuteUnlock trial analytics

Study Endpoints

Primary Endpoints

Change from baseline in post-BD FEV1
1 week
Treatment failure rate
28 days

Treatment failure is defined as death due to any cause, (re)admission to a hospital for COPD, ED (re)visit or unscheduled medical visit for worsening of COPD symptoms, or the necessity to intensify pharmacologic treatment (including second course of systemic steroids for COPD exacerbation) within 28 days after randomization.

Treatment failure rate within 28 days after randomization
28 days

Treatment failure is defined as death due to any cause, (re)admission to a hospital for asthma, ED (re)visit or unscheduled medical visit for worsening of asthma symptoms, or the necessity to intensify pharmacologic treatment (including second course of systemic steroids for asthma exacerbation) within 28 days after randomization.

Secondary Endpoints

Change from baseline in post-BD FEV1 at scheduled timepoints
Days 1, 2, 3, 14, 28, and 42
Incidence of treatment-emergent adverse events
42 days
Absolute change from baseline (CFB) in post-bronchodilator (BD) forced expiratory volume in 1 second (FEV1) at Week 1
Week 1
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
RademikibartEXPERIMENTAL -
PlaceboPLACEBO_COMPARATOR -

Interventions

NameTypeDescription
RademikibartDRUGSingle 300 mg dose as a 2-minute IV push
Rademikibart in prefilled syringeCOMBINATION_PRODUCTParticipants receive 600 mg (4mL) of rademikibart administered subcutaneously.
Matching placebo in prefilled syringeDRUGParticipants receive 4mL of placebo matched to rademikibart administered subcutaneously.
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Eligibility Criteria

Age Range18 Years to 85 Years
SexALL
Healthy VolunteersNo
Study Sites2

Inclusion Criteria - Asthma cohort * Body weight of ≥40 kg and BMI ≤45 kg/m2 at SV1a. * Physician-diagnosed asthma * Currently receiving treatment with low, medium, to high dose ICS in combination with at least 1 additional asthma controller medication. * Must have experienced at least 1 asthma exa...

Countries:United StatesArgentinaAustraliaGeorgiaSerbiaUnited Kingdom
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Recent Changes (Last 90 Days)

LOWAug 27, 2026NCT07705737Status: NOT_YET_RECRUITING → RECRUITING
LOWAug 27, 2026NCT07705737Status: NOT_YET_RECRUITING → RECRUITING
LOWAug 6, 2026NCT06940141primaryCompletionDate: changed
LOWAug 6, 2026NCT06940141primaryCompletionDate: changed

Frequently asked questions about Rademikibart

What is Rademikibart in prefilled syringe used for?

Rademikibart in prefilled syringe is an investigational small molecule being developed for acute asthma and acute COPD exacerbation. It is being studied as an add-on treatment for these acute respiratory conditions. The drug is currently in Phase 2 clinical development and has not been approved by regulatory authorities.

What does Rademikibart target?

Rademikibart targets IL-4Rα, the alpha subunit of the interleukin-4 receptor. By modulating this target, the drug is intended to address inflammatory pathways involved in acute asthma and COPD exacerbations. This mechanism is being evaluated in clinical trials for its potential to reduce exacerbation severity.

Who makes Rademikibart in prefilled syringe?

Rademikibart in prefilled syringe is developed by Connect Biopharma Holdings Limited, a biopharmaceutical company traded on NASDAQ under the ticker CNTB. The company is conducting Phase 2 clinical trials to evaluate the drug's safety and efficacy in acute asthma and COPD exacerbation.

What phase is Rademikibart in?

Rademikibart is in Phase 2 clinical development. It is an investigational drug and has not received FDA approval. Two Phase 2 trials are currently active, one recruiting and one active but not recruiting, studying the drug in patients with acute asthma or COPD exacerbation.

What clinical trials is Rademikibart in?

Rademikibart is being studied in three Phase 2 trials. NCT07705737 evaluates intravenous Rademikibart for acute asthma and COPD exacerbation in the US. NCT06940154 (Seabreeze STAT COPD) and NCT06940141 (Seabreeze STAT Asthma) assess add-on treatment in acute COPD and asthma exacerbations across multiple countries.

Is Rademikibart the same as Rademikibart in prefilled syringe?

Yes, Rademikibart in prefilled syringe is also known as Rademikibart. The prefilled syringe formulation is a specific delivery method of the same drug substance. Clinical trials may use different formulations, such as intravenous administration, to evaluate the drug's effects.