Clinical trial Recruiting at 1 site Phase 2 Interventional Ages 18 and up

HL-1186 Tablet for postherpetic neuralgia: safety and efficacy in adults

Official title: A Clinical Trial to Evaluate the Efficacy and Safety of HL-1186 Tablet in the Treatment of Postherpetic Neuralgia

Run by Shanghai Huilun Pharmaceutical Co., Ltd. · NCT07758920 · Data updated 2026-11-12

This study tests whether HL-1186 tablets, compared with placebo and with pregabalin, help reduce pain in adults with postherpetic neuralgia.

More Postherpetic Neuralgia ( PHN ) trials

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment200 (estimated)
SponsorShanghai Huilun Pharmaceutical Co., Ltd.
Industry-sponsored
Drugs / interventionschemotherapy
Locations1 site (Beijing)
StatusRecruiting
StartedAugust 2026
Main results expectedJune 2027
Study endsJune 2027
Registry record updatedAugust 11, 2026
Trial IDNCT07758920 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18 and older with persistent PHN pain for at least one month after herpes zoster healing.

Probably not a fit

Patients who do not respond to HL-1186 or experience intolerable side effects may not benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This multicenter, randomized trial uses a double-blind, double-dummy design to compare HL-1186 tablets to placebo and to an active pregabalin control in adults with postherpetic neuralgia. Participants are assigned to HL-1186, HL-1186 placebo, pregabalin capsule, or pregabalin capsule placebo in parallel groups to assess safety, efficacy, and pharmacokinetics. The study includes adults who have persistent PHN pain for at least one month after herpes zoster lesions healed. Key safety monitoring and PK analysis are included to characterize the drug’s profile. Conduct is at multiple centers with lead sponsor Shanghai Yidian Pharmaceutical Technology Development Co., Ltd., in collaboration with Peking University First Hospital in Beijing.

Why it matters

Potential benefit: If successful, HL-1186 could provide another option to help reduce PHN pain with a clear safety profile.

How similar studies have gone: Similar trials in PHN often show signal for efficacy with proper PK/safety profiling, but this exact HL-1186 approach is exploratory.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Aged ≥ 18 years, of either sex.
2. Pain persists for 1 month or more after healing of skin lesions in patients with herpes zoster.
3. Participants fully understand the purpose, characteristics, methods of the trial and possible AEs, voluntarily participate in the trial and sign the ICF, or have their legal guardian sign the ICF on their behalf.

Exclusion Criteria:

1. Participants with any pain other than PHN, or with other diseases that the researcher considers to potentially affect the evaluation of PHN.
2. Participants who may be allergic to the active ingredients or excipients of HL-1186 Tablet, HL-1186 Tablet placebo, pregabalin capsule or pregabalin capsule placebo, have an allergic constitution, or have a history of allergies to ≥ 3 substances.
3. Participants who have used drugs that may damage nerves (such as tumor chemotherapy drugs) after being diagnosed with PHN.
4. The baseline NRS collection begins within the 5 half-lives following the last use of the prohibited drug.
5. Participants who have previously used pregabalin with inadequate efficacy or intolerance.
6. Clinically significant abnormalities in the 12-lead electrocardiogram (ECG) during the screening period, or complicated with severe cardiopulmonary diseases, which are deemed unsuitable for inclusion by the researcher.
7. Participants with a history of malignant tumors within 2 years prior to screening.
8. Participants who have undergone major surgery within 8 weeks prior to enrollment or plan to undergo any surgery during the trial period.
9. Participants with positive human immunodeficiency virus antibody, positive syphilis serological test, positive hepatitis B virus surface antigen with hepatitis B virus DNA \> ULN, or positive hepatitis C virus antibody with hepatitis C virus RNA \> ULN.
10. Participants with a history of alcoholism or drug abuse within 2 years before screening.
11. Female participants who are pregnant, breastfeeding (within 1 year after delivery), or with a positive pregnancy test.
12. Participants deemed by the investigator to be unsuitable for participating in this trial for any reason.

Where it's running

  • Peking University First Hospital
    Beijing, China
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.