Investigation Into the Scar Reduction Potential of Prevascar (Interleukin-10)

Renovo

Status and phase

Completed

Phase 2

Conditions

Cicatrix

Wound Healing

Treatments

Drug: Placebo

Drug: Prevascar

Study type

Interventional

Funder types

Industry

Identifiers

NCT00984646

RN1003-0027

Details and patient eligibility

About

The purpose of this study was to investigate the scar-reducing properties of eight doses of intradermal Prevascar (IL-10).

Full description

Subjects were randomised to one of two dose groups, each with four concentrations of intradermal Prevascar. Subjects had four 1cm incisional wounds made on the inner aspect of each upper arm (eight in total), giving four sets of anatomically paired wound sites per subject. Each subject acted as their own control with one site from each wound pair randomly treated with intradermal Prevascar and the other treated with Placebo (vehicle) or Standard Care.

Intradermal Prevascar was administered at 100μl per linear cm of wound site prior to wounding on Day 0 and 100μl per linear cm to each wound margin 24 hours later on Day 1. Group 1 subjects received doses of 5, 50, 250 and 1000ng/100μl and group 2 subjects received 25, 125, 500 and 2000ng/100μl.

Subjects in each group were also randomised into two control subgroups to receive either 100μl/linear cm intradermal placebo (Subgroup 1) or Standard Care alone (Subgroup 2) at control wound sites.

Subjects returned for follow-up at Day 14, Month 1, Month 3, Month 6, Month 9 and Month 12.

Enrollment

175 patients

Sex

All

Ages

18 to 85 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

Male and female subjects, aged 18-85 years, who have given written informed consent
Subjects with a BMI (Quetelet's index) within the permitted weight/height2 range of 15-55kg/m2
Subjects with, in the opinion of the Investigator, clinically acceptable results for screening laboratory tests performed within 28 days prior to the first trial administration
Female subjects with child-bearing potential who are using a method(s) of contraception deemed acceptable by the Investigator and agree to continue doing so for the first month of the trial

Exclusion criteria

Subjects who, on direct questioning and by physical examination, reveal a history or evidence of hypertrophic or keloid scarring
Subjects with tattoos or previous scars within 3cm of the area to be incised during the trial
Subjects of Afro-Caribbean descent, because of their increased susceptibility to hypertrophic or keloid scarring
Subjects who have had previous surgery in the area to be incised, conducted within 1 year of the first dosing day
Subjects with a history of a bleeding disorder or who are receiving anticoagulant therapy
Subjects who, on direct questioning and physical examination, show evidence of any past or present clinically significant disease that may affect the endpoints of the trial, e.g. coagulation disorders, diabetes, immuno- mediated conditions and clinically significant skin diseases or allergies
Subjects with a clinically significant skin disorder that is chronic or currently active, and which the Investigator considers will adversely affect the healing of the acute wounds or involves the areas to be examined in this trial
Subjects with any clinically significant medical condition or history that would impair wound healing, including significant rheumatoid arthritis, chronic renal impairment (significant for age), significant hepatic impairment (liver function tests >3 times upper limit of normal), congestive heart failure, active malignancy or history of malignancy within last 5 years, immunosuppression or chemotherapy within last 12 months, history of radiotherapy or diabetes mellitus
Subjects with a history of hypersensitivity to any of the drugs or dressings used in the trial
Subjects who are taking, or who have taken, any investigational product or participated in a clinical trial within 3 months prior to the first trial
dose administration
Subjects who are taking regular, continuous, oral corticosteroid therapy
Subjects undergoing investigations or changes in management for an existing medical condition
Subjects with a history of drug abuse, or who test positive for drugs of abuse (cocaine, amphetamines, methamphetamines, opiates or benzodiazepines) during the screening period, which is not explained by the intake of legitimate prescribed or over-the-counter medication for a documented medical condition
Subjects who, in the opinion of the Investigator, are unlikely to complete the trial for whatever reason
Subjects receiving immunosuppressive treatment
Females who are pregnant or lactating
Subjects who have any clinically significant neurological impairment or disease
Subjects with an active infection (subjects were able to participate in the trial once the infection had passed and they had been re-screened)