The goal of this clinical trial is to evaluate the safety, tolerability, PK, and PD of single and multiple ascending doses of QLS12010 Capsules and the effect of food on their PK profiles in healthy adult participants and participants with atopic dermatitis. This study consists of four parts: Part A is a single ascending dose (SAD) study, once sufficient safety and PK data are obtained from the SAD cohorts, the SMC will determine the dosage of initial cohort in Part B, which consists of three multiple ascending doses (MAD) cohorts of QLS12010 Capsules. Part C is a randomized, open-label, two-cycle, crossover food effect study under fasting and fed (high-fat meal) conditions. Part D is to evaluate the safety, tolerability, pharmacokinetic (PK), pharmacodynamic (PD) characteristics, and preliminary efficacy of QLS12010 Capsules following multiple oral administrations in adult participants with atopic dermatitis (AD).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
102
Peking University Third Hospital
Beijing, China
RECRUITINGIncidence and severity of treatment emergent Adverse Events as assessed by CTCAE v5.0
Time frame: up to approximately 1 month
Area under the curve plasma concentration from time zero to last measurable concentration [AUC(0-last)]
Time frame: up to approximately 1 month
Area under the curve plasma concentration from time zero to infinity [AUC(0-∞)]
Time frame: up to approximately 14 days
Maximum observed plasma concentration (Cmax)
Time frame: up to approximately 1 month
Time to maximum observed plasma concentration (Tmax)
Time frame: up to approximately 1 month
Terminal elimination half-life (t1/2)
Time frame: up to approximately 1 month
Apparent clearance (CL/F)
Time frame: up to approximately 1 month
Apparent volume of distribution (Vz/F)
Time frame: up to approximately 1 month
Mean residence time (MRT)
Time frame: up to approximately 1 month
Changes and percentage changes from baseline in Eczema Area and Severity Index (EASI) scores
The minimum EASI score is 0, and the maximum EASI score is 72. A score of 0 indicates clear or no eczema; a greater score indicates more severe disease.
Time frame: at Weeks 1, 2, 3, 4, 5, and 6
Changes and percentage changes from baseline in Investigator's Global Assessment (IGA) scale
The IGA5-point scale ranges from 0 (clear) to 4 (severe AD). A decrease in score indicates an improvement in signs and symptoms.
Time frame: at Weeks 1, 2, 3, 4, 5, and 6
Changes and percentage changes from baseline in weekly mean scores of Peak Pruritus Numerical Rating Scale (PP NRS)
The PP NRS is a single self-reported item designed to measure peak pruritus, or 'worst' itch, over the previous 24 h based on the following question: 'On a scale of 0 to 10, with 0 being "no itch" and 10 being "worst itch imaginable".
Time frame: at Weeks 1, 2, 3, 4, 5, and 6
Changes and percentage changes from baseline of body surface area (BSA) affected by lesions
BSA assessment estimates the area of skin lesions in each part of the body, with one palm unit of the patient taken as 1% of the body surface area.
Time frame: at Weeks 1, 2, 3, 4, 5, and 6
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