Treatment of Chronic Postherpetic Pain With Autologous Fat Grafting - A RCT

NCT ID: NCT04099706

Last Updated: 2023-03-22

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-09-19

Study Completion Date

2021-10-01

Brief Summary

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This randomized clinical trial investigates the possible beneficial effect of autologous fat grafting on postherpetic neuralgia.

Detailed Description

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Herpes Zoster (HZ), is a condition caused by Varicella-Zoster virus (VZV), The disease is caused by reactivation of a latent VZV-infection in the sensory ganglia.

Clinically the condition is characterized by a painful, unilateral, vesicular rash. Pain is the most prominent symptom in around 90% of patients. In 10% of patients, this pain remains and becomes chronic.

Post-herpetic neuralgia is a chronic pain syndrome that occurs after the dermal manifestation disappears. Treatment is complex and mainly topical or systemic. For many patients, this is not sufficient and they live with constant pain.

Autologous fat grafting has shown promise in treating several different painful conditions such as post-mastectomy pain syndrome, painful scars, etc. Our previous pilot study (NCT03584061) investigating the effect of autologous fat grafting on PHN, showed a marked reduction in pain with half of the patients being pain-free after the procedure.

The aim of this study is to test the hypothesis that autologous fat grafting is more effective than a sham operation in treating PHN.

Conditions

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Postherpetic Neuralgia Shingles Varicella Zoster Herpes Zoster Chronic Pain

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors
The allocation will be masked. All patients will undergo the procedure under general anaesthesia. The randomized allocation will take place during surgery.

Study Groups

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Intervention - Fat grafting

The participant will undergo the procedure under general anaesthesia. A small amount of fat (20-120 cc) will be harvested using liposuction, from the abdomen or the thighs. Randomized allocation will be made and when allocated to the intervention group, the fat will be purified using decanting and injected into the painful areas of skin.

Group Type EXPERIMENTAL

Autologous Fat Grafting / Fat Transplant

Intervention Type PROCEDURE

See arm descriptions.

Control - Saline

The participant will undergo the procedure under general anaesthesia. A small amount of fat (20-120 cc) will be harvested using liposuction, from the abdomen or the thighs. Randomized allocation will be made and when allocated to the control group, the fat will be discarded and saline will be injected into the painful areas of skin.

Group Type SHAM_COMPARATOR

Autologous Fat Grafting / Fat Transplant

Intervention Type PROCEDURE

See arm descriptions.

Interventions

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Autologous Fat Grafting / Fat Transplant

See arm descriptions.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Age over 18
* Pain in area of former VZV-infection.
* Pain present over 3 months after reactivation of VZV and is present at least 4 days a week and of intensity \>3 on the VAS-scale

Exclusion Criteria

* Psychiatric illness that could potentially affect the study.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Odense University Hospital

OTHER

Sponsor Role lead

Responsible Party

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Martin Sollie

Principal investigator, M.D, Dept. of Plastic and Reconstructive Surgery

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Jens Ahm Sorensen, Prof

Role: PRINCIPAL_INVESTIGATOR

Professor

Locations

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Odense University Hospital

Odense, Funen, Denmark

Site Status

Countries

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Denmark

Other Identifiers

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S-20190112

Identifier Type: -

Identifier Source: org_study_id

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