The primary objective of this study is to evaluate the safety of ICX-RHY-013 in the treatment of stable, restrictive scars in subjects who have suffered a burn injury. Evaluation will be achieved through regular assessment of adverse events, vital signs, blood work monitoring and laboratory analysis cellular properties of the scar through biopsy. The secondary objectives of this study are to evaluate improvement in symptoms of scars including reduced pain, discomfort and itching, improvement in mobility and daily function, improvement in appearance and scar texture.
Restrictive scar contracture (a condition where tissue thickens and tightens, pulling the surrounding healthy skin toward the damaged area) due to a serious burn injury can result in long term aesthetic and physical consequences. Skin contractures adjacent to a joint lead to joint deformities that severely restrict range of motion (ROM) of the affected joint. Skin contractures are also often accompanied by crippling levels of chronic pain resulting in a high level of dependency on pain medications. These isolated or combined factors can lead to a significant disruption in both social and professional life, leading to a marked impact on an individual's quality of life. The current standard of care for restrictive scar contracture involves the surgical excision of the contracture itself and/ or skin grafting. These standard therapies require extensive and often repeated surgeries. Physicians are continually seeking less invasive therapies to treat patients with burn contractures. ICX-RHY-013 is an investigational medicinal product comprised of viable allogeneic human dermal fibroblast (HDFs) cells suspended in HypoThermosol®-FRS. HDFs are isolated from neonatal foreskin, cryopreserved, thawed and expanded in culture under good manufacturing practice at Intercytex Ltd., United Kingdom. The drug formulation will be 20 million cells per 1 milliliter of HypoThermosol® and will be administered to subjects via intradermal injections at a maximum dose of 0.25 ml (or 5 million cells) per cm² of tissue. If determined to be safe and effective, it is believed this therapy could, in the future, be delivered in a series of superficial injections and can be carried out in a doctor's office. This treatment could represent a new less invasive therapy of choice for patients with burn contractures, where current recourse would be to surgery. This advance could have significant positive benefits to the patient in terms of: * no side-effects of surgery * treatment given in an outpatient environment without the need for expensive hospitalization * enhanced quality of life * lower costs Cohort 1 will consist of 4 participants who are scheduled to have elective body contouring surgery which will consist of the removal of an abdominal incision scar. The investigational drug will be injected into the existing surgical incision (scar) with the investigational drug, ICX-RHY-013. The purpose of this cohort is to evaluate the initial safety of the investigational drug (ICX-RHY-013) in a series of doses on your surgical scar that will then be surgically removed. Cohorts 2 through 5 will consist of 4 participants each who have burn scars with restrictive scar contractures. The purpose of these cohorts is to evaluate the ongoing safety of the investigational drug (ICX-RHY-013) in post burn scars with restrictive scar contractures. The investigational drug will be injected directly into these scar contractures. Each cohort is unique in that the dose and frequency of the investigational drug received will be different. We will evaluate the safety of the drug between each cohort by assessing all side effects that the participants may experience.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
15
Drug Dosing for Cohorts as follows: Cohorts (N=4) Safety Cohort 1: 1. Empty control no injection 2. Vehicle only (0.5 ml of HypoThermosol solution) 3. 5 million cells / cm² , single administration at Day 0 4. 5 million cells/ cm² , single administration at week 4 5. 5 million cells/cm² , single administration at Day 0 , repeat administration of this dose @ week 4 At day 0, the subject will receive a total of 3 different injections and at week 4 the subject will receive a total of 2 different injections. Cohort 2: 2.5 million cells/ cm2, single administration Cohort 3: 5 million cells /cm2, single administration Cohort 4: 2.5 million cells/ cm2, repeat dose administration @ 4 weeks Cohort 5: 5million cells / cm2 repeat dose administration @ 4 weeks
University of Pittsburgh
Pittsburgh, Pennsylvania, United States
Number of Participants With Adverse Events
The evaluation of safety of ICX-RHY-013 in the treatment of stable, restrictive hypertrophic scars through assessment of adverse events. The primary objective of the safety (no injection) cohort is to evaluate initial safety of multiple doses through assessment of adverse events. The primary objective of remaining cohorts is to evaluate the ongoing safety of ICX-RHY-013 in post-burn hypertrophic scars that are not planned for excision through assessment of adverse events.
Time frame: Days 0, 7, 14, 28, 56, 84
Number of Participants With Serious Adverse Events Reported
The evaluation of tolerability of ICX-RHY-013 in the treatment of stable, restrictive hypertrophic scars through regular assessment of adverse events.
Time frame: 12 weeks
Percentage of Subjects Worse Hypertrophic Scars
The secondary objectives of this study are to evaluate improvement in symptoms of hypertrophic scars.
Time frame: Endpoints assessed at Day 84.
Vancouver Scar Scale
Vancouver scar scale will be evaluated for each cohort. The Vancouver scar scale is the most frequently cited assessment of scar severity used in clinical studies. Pigmentation, vascularity, pliability, and scar height are graded producing a composite score. A score of 0 represents normal skin with higher grades representing greater deformity with a maximum possible rating of 14.
Time frame: 12 weeks
Patient and Observer Scar Assessment Scale (POSAS)
POSAS aims to measure scar quality, it is a comprehensive scale designed for the evaluation of all types of scars by professionals and patients. It contains two scales with six items, scored numerically from 0-10, where 0 is normal skin and 10 is the worst scar imaginable. the total scoring range is from 0-120.
Time frame: 12 weeks
Disability Index-Disability of Arm, Shoulder and Hand
The six subjects suffering from upper extremity and cervical scar contractures were evaluated with the Disability of Arm, Shoulder and Hand (DASH) questionnaire. The DASH questionnaire evaluates symptoms and functional status. A lowest score of 0 indicates normal skin and highest score of 100 represents the greatest possible morbidity.
Time frame: 12 weeks
Quality of Life Measurement - Satisfaction With Appearance Scale (SWAP)
SWAP is a psychological test for personality diagnosis. there are 9 questions evaluated by a score of 7 (most descriptive to the patient) to 0 (not descriptive or irrelevant) for a total scoring range of 0-63.
Time frame: 12 weeks
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