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Not yet recruiting NCT07569978

Efficacy and Safety of High-Concentration 35 kDa Hyaluronan Gel for Herpes Zoster-Associated Pain

No phase Interventional Herpes Zoster Zoster-Associated Pain Postherpetic Neuralgia Neuropathic Pain

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
The protocol lists: 10% High-Concentration 35 kDa Hyaluronan (HA35) Topical Analgesic Gel.
Who it may be relevant to
Registry conditions: Herpes Zoster, Zoster-Associated Pain, Postherpetic Neuralgia, Neuropathic Pain. Basic parameters: 18 years — 85 years · All.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
Center list to be confirmed — check the primary protocol.
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

Unsure about the terms? Read our patient guide →

Official title

A Prospective, Single-Arm, Open-Label Pilot Clinical Study to Evaluate the Efficacy and Safety of Topical 10% High-Concentration 35 kDa Hyaluronan (HA35) Gel in Subjects With Herpes Zoster-Associated Pain

Overview

This is a prospective, single-arm, open-label, pilot clinical study to evaluate the efficacy and safety of topical 10% high-concentration 35 kDa hyaluronan (HA35) gel in subjects with herpes zoster-associated pain (ZAP). Eligible participants will receive a single topical application of the study gel. The primary objective is to assess rapid pain reduction within 2 minutes and 24hours after application. Secondary objectives include evaluation of analgesic duration, local tolerability, erythema improvement, and overall safety throughout the observation period. This is a minimal-risk, non-pharmacological supportive care intervention.

Detailed description

This prospective, single-center, single-arm, open-label pilot clinical study investigates the analgesic efficacy and safety of topical 10% high-concentration 35 kDa hyaluronan (HA35) gel for the management of herpes zoster-associated pain (ZAP), including acute zoster pain and postherpetic neuralgia (PHN).

Eligible subjects will receive a single topical application of HA35 gel to the affected skin area. Pain intensity will be evaluated using a 0-10 Numeric Rating Scale (NRS) at baseline, 2 minutes, 20 minutes, 4 hours, 8 hours, 12 hours, and 24 hours after application.

Local skin reactions, erythema, swelling, and all adverse events will be monitored for safety assessment.

This study uses a non-invasive, non-pharmacological topical intervention with minimal risk to participants. All procedures will be conducted in accordance with the Declaration of Helsinki, and written informed consent will be obtained from all subjects prior to enrollment.

Interventions

  • Device 10% High-Concentration 35 kDa Hyaluronan (HA35) Topical Analgesic Gel
    A topical, non-pharmacological gel containing 10% high-concentration 35 kDa hyaluronan fragment. It is applied topically to the affected skin area to relieve herpes zoster-associated pain, reduce inflammation, and improve local tolerability.

Primary outcome measures

  • Change in Pain Intensity NRS Score (0-10) [Time frame: Baseline to 2 minutes, 20 minutes, 4 hours, 8 hours, 12 hours, and 24 hours after single topical application]
Secondary outcome measures (1)
  • Analgesic Duration [Time frame: Up to 24 hours after application]

Eligibility criteria

Inclusion criteria

  • Age 18-85 years, male or female
  • Clinically diagnosed with herpes zoster-associated pain (acute ZAP or PHN)
  • Baseline pain NRS score ≥5
  • Ability to understand and complete NRS assessments
  • Signed written informed consent

Exclusion criteria

  • Acute bacterial skin infection at the application site
  • Use of topical analgesics or antiviral therapy within 24 hours
  • Systemic analgesic use within 6 hours
  • Known hypersensitivity to hyaluronan or gel components
  • Pregnant or lactating women
  • Severe systemic disease or malignant tumor

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Allocation
N/A
Model
Single group
Masking
Open label
Primary purpose
Supportive care

Study locations

Center list to be confirmed — check the primary protocol.

Identifiers

NCT: NCT07569978 · HA35202602

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗