Efficacy, Safety, and Tolerability of Remlarsen (MRG-201) Following Intradermal Injection in Subjects With a History of Keloids

• Sponsor: miRagen Therapeutics, Inc.
• Information provided by (Responsible Party): miRagen Therapeutics, Inc.

Study Description

Brief Summary:

Remlarsen (MRG-201) is designed to mimic the activity of a molecule called miR-29 that decreases the expression of collagen and other proteins that are involved in scar formation. Remlarsen is being studied to determine if it can limit the formation of fibrous scar tissue in certain diseases. The objectives of this study are to investigate the safety and tolerability of remlarsen in subjects with a history of keloid scars, and to investigate the activity of remlarsen in prevention or reduction of keloid formation. Another objective is to study the pharmacokinetics of remlarsen (the movement of a drug into, through and out of the body). A group of 12-16 study volunteers will undergo two small skin biopsies in the upper back/shoulder region that will be closed with sutures. One biopsy site will be injected with up to 6 doses of remlarsen over a period of 2 weeks and the second site will be injected similarly with a placebo solution. Participants will be monitored for keloid formation at the two biopsy sites, for signs or symptoms of adverse effects on the body, and for the levels of remlarsen in the blood over time. A second 2-week cycle of treatment may be administered if there are signs that a keloid may be forming at one or both biopsy sites. Subjects will be followed for about 1 year following their final course of treatment to assess the long-term safety of remlarsen and the potential for later appearance of a keloid scar. Additional groups of subjects may be enrolled to test lower doses of remlarsen or an extended dosing schedule.

Condition or disease	Intervention/treatment	Phase
Keloid	Drug: Remlarsen; Drug: Placebo	Phase 2

Study Design

• Study Type: Interventional (Clinical Trial)
• Actual Enrollment: 14 participants
• Allocation: Randomized
• Intervention Model: Parallel Assignment
• Intervention Model Description: Up to 6 cohorts of 12-16 subjects each may be enrolled to study various dose levels and dosing regimens.
• Masking: Triple (Participant, Investigator, Outcomes Assessor)
• Masking Description: The treatment administered to each of two wound sites will be randomized (left versus right), such that all subjects will receive both remlarsen and placebo in a double-blinded fashion.
• Primary Purpose: Treatment
• Official Title: A Phase 2, Double-blind, Placebo-Controlled Study to Investigate the Efficacy, Safety and Tolerability of MRG-201 Following Intradermal Injection in Subjects With a History of Keloids
• Actual Study Start Date: July 9, 2018
• Estimated Primary Completion Date: April 2020
• Estimated Study Completion Date: April 2020

Arms and Interventions

Arm	Intervention/treatment
Experimental: Cohort 1 - Remlarsen (L) vs. Placebo (R); Six doses remlarsen (5.3 mg) over a period of 2 weeks at the site of one excisional skin wound (left side) and six doses Placebo over a period of 2 weeks at the site of a second excisional skin wound (right side). Each subject will serve as their own control.	Drug: Remlarsen; Intradermal injection at site of one excisional wound; Other Name: MRG-201; Drug: Placebo; Intradermal injection at site of second excisional wound
Experimental: Cohort 1 - Remlarsen (R) vs. Placebo (L); Six doses remlarsen (5.3 mg) over a period of 2 weeks at the site of one excisional skin wound (right side) and six doses Placebo over a period of 2 weeks at the site of a second excisional skin wound (left side). Each subject will serve as their own control.	Drug: Remlarsen; Intradermal injection at site of one excisional wound; Other Name: MRG-201; Drug: Placebo; Intradermal injection at site of second excisional wound

Outcome Measures

Primary Outcome Measures :

1. Proportion of confirmed keloid formation across subjects for treated vs. untreated lesions. [ Time Frame: Up to 365 days ]
2. Proportion of subjects with improvement, defined as no confirmed keloid formation in the treated lesion vs. confirmed keloid formation in the untreated lesion. [ Time Frame: Up to 365 days ]
3. Number of participants with treatment-related adverse events as assessed by CTCAE v5.0 [ Time Frame: Up to 365 days ]

Secondary Outcome Measures :

1. Area under the plasma concentration vs. time curve (AUC) of remlarsen [ Time Frame: Up to 27 days ]
2. Peak plasma concentration (Cmax) of remlarsen [ Time Frame: Up to 27 days ]

Other Outcome Measures:

1. Time to keloid formation [ Time Frame: Up to 365 days ]
2. Volume of keloid [ Time Frame: Up to 365 days ]

Eligibility Criteria

• Ages Eligible for Study: 18 Years and older (Adult, Older Adult)
• Sexes Eligible for Study: All
• Accepts Healthy Volunteers: No

Criteria

Key Inclusion Criteria:

• Must provide written informed consent.
• Females must not be pregnant, or lactating, and have negative pregnancy tests.
• Study candidates should be likely to form keloids in the upper back/shoulder area after punch biopsy based on a history of a high frequency of keloid formation (≥ 10 keloids) or a history of large keloids (≥ 4 cm).
• Subjects should not anticipate requiring systemic corticosteroids during the study.
• Must have area in upper back/shoulder region free of keloids, acne, striae, or other skin pathologies or complications.
• Female subjects of childbearing potential or male subjects engaged in sexual relations with a female of childbearing potential must be willing to use a highly effective method of contraception throughout their study participation and for at least 6 months after the last dose of study drug.

Key Exclusion Criteria:

• Clinically significant abnormalities in medical history or physical exam that, in the opinion of the Investigator, would make the subject unsuitable for inclusion in the study.
• History of genetic disorders that predispose to keloids (e.g. Ehlers-Danlos syndrome, Ullrich congenital muscular dystrophy, etc.).
• History of renal or liver dysfunction or evidence of renal or liver dysfunction at screening.
• Evidence of clinically significant anemia, neutropenia, or thrombocytopenia at screening.
• History of bleeding diathesis or coagulopathy.
• Active or uncontrolled infection at screening or baseline.
• Recent history of alcoholism, drug abuse or illicit drugs (within the last year), and agreement to refrain from using illicit drugs throughout the study.
• Positive for bloodborne pathogen (HBV, HCV, HIV) at screening.
• Prior malignancies within the past 3 years (allowing squamous cell and basal cell carcinomas that have been successfully treated).
• Use of systemic steroids within 4 weeks of the Baseline visit or local use of steroids within 1 week of the Baseline visit.
• Use of an investigational small molecule drug within 30 days of the baseline visit or use of an investigational oligonucleotide or biologic drug within 90 days of the baseline visit.

Contacts and Locations

Locations

United States, Florida

Center for Clinical and Cosmetic Research

Aventura, Florida, United States, 33180

United States, Illinois

Northwestern University

Chicago, Illinois, United States, 60611

United States, Michigan

Henry Ford Health System

Detroit, Michigan, United States, 48202

United States, Texas

J & S Studies

College Station, Texas, United States, 77845

Sponsors and Collaborators

miRagen Therapeutics, Inc.

Investigators

• Study Director: Diana M Escolar, MD, FAAN; miRagen Therapeutics, Inc.

More Information

• Responsible Party: miRagen Therapeutics, Inc.
• ClinicalTrials.gov Identifier: NCT03601052 History of Changes
• Other Study ID Numbers: MRG201-30-201
• First Posted: July 26, 2018
• Last Update Posted: July 8, 2019
• Last Verified: July 2019

Individual Participant Data (IPD) Sharing Statement:

• Plan to Share IPD: Undecided

• Studies a U.S. FDA-regulated Drug Product: Yes
• Studies a U.S. FDA-regulated Device Product: No

Keywords provided by miRagen Therapeutics, Inc.:

Keloid; MicroRNAs; Wound healing

Additional relevant MeSH terms:

Keloid; Collagen Diseases; Connective Tissue Diseases; Cicatrix; Fibrosis; Pathologic Processes