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Clinical Trials associated with ZL-82 / Not yet recruitingPhase 2 A Randomized, Double-blind, Placebo-controlled, Parallel-group Phase II Clinical Study Evaluating the Efficacy and Safety of ZL-82 Tablets in Participants With Moderate to Severe Atopic Dermatitis
This clinical trial aims to explore whether the drug ZL-82 tablets can be used to treat moderate to severe atopic dermatitis in adults, and to understand the safety and tolerability of the drug. The main questions that the trial intends to answer are: Can ZL-82 tablets alleviate the Eczema Area and Severity Index (EASI) score of patients? What physical problems will patients have after taking ZL-82 tablets? The researchers will compare ZL-82 tablets with placebo (a substance with a similar appearance but without drug components) to observe whether ZL-82 tablets can be used to treat moderate to severe atopic dermatitis. Participants need to take ZL-82 tablets or placebo every day for 16 weeks, and visit the hospital for a check-up every two weeks; record their own symptoms and the percentage change of EASI score relative to the baseline.
A Single-center, Randomized, Double-blind, Placebo-controlled, Dose-escalation Design to Evaluate the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics and QTc Effect Research
ZL-82 tablets are highly selective covalent irreversible inhibitors of non-receptor tyrosine protein kinase 3 (Janus kinase 3, JAK3) developed by Chengdu Zenitar Biomedical Technology Co., Ltd. According to Document No. 44 of 2020 "Chemical Drug Registration Classification and Application Document Requirements", it belongs to Category 1 chemical drugs and is an innovative drug that has not been marketed at home or abroad.
ZL-82 tablets have completed non-clinical pharmacology, non-clinical PK, and toxicology experiments, and have obtained the first-in-human randomized double-blind, placebo-controlled, dose-increasing dose-increasing approval for single oral administration of ZL-82 tablets. Partial results of the phase I clinical study on safety tolerability, pharmacokinetics and preliminary pharmacodynamics. It is necessary to further explore the safety, tolerability, pharmacokinetics and pharmacodynamic characteristics of multiple administrations based on the results obtained from the first human trial.
Non-clinical in vitro hERG tests and in vivo animal safety pharmacology tests of ZL-82 tablets showed no relevant cardiac safety concerns. According to the ICH E14 guideline "Clinical Evaluation of QT/QTc Interval Prolongation and Potential Proarrhythmic Effects of Non-Antiarrhythmic Drugs" Evaluation》2, it is recommended to conduct cardiac safety evaluation of experimental drugs with systemic bioavailability to evaluate the impact of experimental drugs on cardiac safety. This evaluation should include evaluation of the effect of the new drug on the QT/QTc interval and collection of adverse cardiovascular events. Establishing a relationship between ZL-82 drug concentration and QT/QTc interval changes will provide additional information for the analysis of cardiac repolarization trial planning and interpretation to facilitate analysis of the effects of drugs on QT/QTc interval changes. Concentration-response analysis, used to characterize the effect of the test drug on the QT/QTc interval, can be used as an alternative to time point analysis.
This study will evaluate the safety, tolerability, pharmacokinetics and pharmacodynamic characteristics of ZL-82 tablets in single/multiple oral doses in healthy subjects, and will also evaluate the effect of ZL-82 tablets on QTc.
Phase I Clinical Study on the Tolerability, Safety and Pharmacokinetics of Single-dose Dose Escalation and Multiple-dose Oral ZL-82 Tablets in Healthy Adult Subjects
ZL-82 is an oral janus kinase (JAK) inhibitor. In vitro biological mass spectrometry identification test proves that ZL-82 can selectively and irreversibly inhibit JAK3. It has obvious safety advantages, with a wide therapeutic window and controllable cardiotoxicity. This is also demonstrated from preliminary GLP-conditions of acute toxicity in SD rats and Beagle dogs. Results of 4-week long-term toxicity in Beagle dogs also support this notion. Therefore, ZL-82 has the potential to treat rheumatoid arthritis. It Used to relieve and heal swelling, pain, stiffness, and limited mobility that may be caused by rheumatoid arthritis.The drug is intended to be used in patients with RA to relieve and heal swelling, pain, stiffness, and limited mobility that may be caused by rheumatoid arthritis.
Pharmacodynamic studies show that ZL-82 has a strong inhibitory effect on JAK3 with IC50 of 2.8 nM, and has no obvious inhibitory effect on JAK1, JAK2 and TYK2. Compared with the similar drug Tofacitinib, its inhibitory effect on JAK3 subtype is 1nM, but its inhibition IC50 for JAK1 subtype and JAK2 subtype are 112nM and 20nM, respectively.and its selectivity is 100-fold and 20-fold, respectively.Also, the selectivity multiples of ZL-82 were 100-fold and 20-fold than tofacitinib , respectively, which indicates that ZL-82 is more selective than the marketed Tofacitinib.This allows ZL-82 to precisely inhibit JAK kinase and block a series of cytokines in the downstream signaling pathway. And show significant effect on rheumatoid arthritis.
The experimental results showed that in DTH and CIA models, 25, 50, 75, and 100 mg/kg of this variety could dose-dependently inhibit joint swelling in mice.
Objectives of Study
Main Purpose:
1. To evaluate the tolerability, safety and pharmacokinetic characteristics of a single oral dose of ZL-82 tablets in healthy adult subjects;
2. To explore the effect of eating on the PK of oral ZL-82 tablets in healthy adult subjects;
3. To evaluate the tolerability, safety and pharmacokinetics of ZL-82 tablets after multiple oral administration in healthy adult subjects.
100 Clinical Results associated with ZL-82
100 Translational Medicine associated with ZL-82
100 Patents (Medical) associated with ZL-82
100 Deals associated with ZL-82
