To Evaluate the Long-term Safety and Efficacy of HSK16149 in Chinese Patients With Peripheral Neuralgia

Study Overview
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Brief Summary
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Investigate the long-term(52 weeks) safety and efficacy of HSK16149 capsules in Chinese patients with periphcral neuralgia

Detailed Description
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Investigate the long-term(52 weeks) safety and efficacy of HSK16149 capsules in Chinese patients with Peripheral neuropathic pain

Official Title
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A 52-week, Open Phase III Study Evaluating the Long-term Safety and Efficacy of HSK16149 Capsules in Chinese Patients With Peripheral Neuralgia

Conditions
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Peripheral Neuropathic Pain

Intervention / Treatment
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* Drug: HSK16149 40mg BID


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Subjects who completed double-blind treatment and safety follow-up in HSK16149-201/301. Able to understand and voluntarily sign informed consent. Exclusion Criteria: Medication compliance was < 80% in double-blind studies. In double-blind study, EOT visit (V10) eGFR< 60 mL/min//1.73m2 Significant safety concerns or adverse events that did not recover before taking the drug in this study arose in the double-blind study. Hepatitis B Surface antigen (HBsAg) positive or hepatitis C virus antibody (HCV Ab) positive during screening [further hepatitis B virus deoxyribonucleic acid (HBV DNA) titer detection or hepatitis C virus ribonucleic acid (HCV RNA) detection (beyond the detection limit of assay need to be excluded)], human immunodeficiency virus antibody (HIV) Ab) positive, serum antibody to treponema pallidum (TP Ab) positive (further test for treponema pallidum titer, if positive, excluded). Women who are pregnant, planning to become pregnant during the study, or breastfeeding; Participants were not expected to use reliable contraceptive methods (including condoms, spermicides, or intrauterine devices) for 28 days after signing up for the ICF or planning to use progester-containing contraceptives during this period. The researcher judged that the study could not be completed according to the scheme or that it was difficult to participate in the study due to safety.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: HSK16149 40mg BID<br>HSK16149 40mg , orally twice a day, treatment period; 52-weeks fixed dose. | Drug: HSK16149 40mg BID<br>* HSK16149 40mg ， orally twice a day, treatment period; 52-weeks fixed dose.<br>* Other names: HSK16149;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| To evaluate the long-term safety of HSK16149 capsules in Chinese patients with peripheral neuralgia. | Safety assessment variables included AE, ECG, laboratory test values, height and weight, physical examination, and vital signs. Safety data will be summarized by aggregate in SS and all subjects will be listed. Overall description of all AE occurred in subjects by total, and summary of cases, cases and percentage. Clinical judgments of laboratory indicators before and after drug administration (according to the range of normal values or the investigator's judgment of clinical significance) were summarized in the form of crosstabs, and the number and percentage of cases were calculated. | From week 1 to week 53 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Changes in SF-MPQ scores from baseline before and after treatment to evaluate the long-term effectiveness of HSK16149. | Based on FAS, descriptive statistical analysis and mapping analysis were performed on the mean values of VAS, PRI and PPI scores and the mean changes from baseline of each visiting point, to compare whether there were statistical differences before and after treatment. Participants rate their pain in three parts of the questionnaire, which are combined into a single pain intensity score: Part 1 - fifteen descriptors of pain intensity, on a scale of 0 (none) to 3 (severe) Part 2 - a visual analog scale (VAS), in which the participant rates pain on a 100 mm-long horizontal line, where 0 mm = no pain and 100 mm = worst possible pain Part 3 - a Present Pain Intensity index in which the participant rates present pain intensity on a scale of 0 (no pain) to 5 (most intense pain) | From week 1 to week 53 |