A Randomized, Blinded, Placebo-controlled, Single- and Multiple-ascending Dose Study to Evaluate Safety, Tolerability, Pharmacokinetics, Immunogenicity, Pharmacodynamics and Clinical Activity of BBT001 in HVs and AD Patient
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).
• Age of 18-65 years.
• Body mass index between 18-28 kg/m², capped at 120 kg.
• Negative pregnancy tests for women of childbearing potential.
• Willingness to refrain from alcohol consumption for 24 hours prior to each study visit.
• Non-smokers, healthy current smokers (≤5 cigarettes/day), or ex-smokers.
• Adequate contraception use (for men and women of childbearing potential).
• No clinically significant abnormalities or history of relevant diseases.
• Must have dermatologist-confirmed chronic atopic dermatitis (≥12 months). Inadequate response to topical treatments or where they are medically inadvisable.
• Moderate to severe atopic dermatitis
• Validated investigator's global assessment for atopic dermatitis (vIGA-ADTM) score ≥3
• Atopic lesions cover ≥10% of body surface area (BSA)
• Average peak pruritus numeric rating scale (PP-NRS) score ≥4 in the 7 days before randomization.
• Eczema Area and Severity Index (EASI) score ≥16 at screening and randomization visits.
• （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.