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| Sponsor: | Pachyonychia Congenita Project |
|---|---|
| Information provided by: | Pachyonychia Congenita Project |
| ClinicalTrials.gov Identifier: | NCT00716014 |
Purpose
Pachyonychia congenita (PC) is a rare, autosomal dominant keratin disorder affecting the nails, skin, oral mucosae, larynx, hair and teeth. Pathogenic mutations in keratin K6a, K6b, K16 or K17 act via a dominant negative mechanism, leading to manifestations of the disease. The most disabling PC symptom is a painful plantar blistering and keratoderma that requires use of ambulation devices in more than 50 percent of patients. Despite our understanding of the molecular basis of PC, current treatment is limited to mechanical removal of the thick calluses, non-specific topical keratolytics, and oral retinoids, none of which alleviates blistering or plantar pain satisfactorily. A public charity, PC Project, has been founded to support the development of treatments for PC (www.pachyonychia.org). In collaboration with this charity, a small company, TransDerm, Inc., has developed a small interfering RNA (siRNA) that specifically targets a mutation in one of the PC keratins, K6a. As this siRNA targets a single nucleotide mutation, it will only be effective against PC subjects harboring this specific mutation. There are currently only six known patients who carry this mutation in the International Pachyonychia Congenita Research Registry, but three of these patients live in Salt Lake City (a mother and two of her children). We propose to perform a Phase Ib clinical trial to test the safety and tolerability of TD101 in PC patients carrying an N171K mutation. We will complete treatment of the adult patient prior to recruitment of the minors.
| Condition | Intervention | Phase |
|---|---|---|
|
Pachyonychia Congenita |
Drug: TD101 Drug: Normal saline (placebo) |
Phase I |
| Study Type: | Interventional |
| Study Design: | Allocation: Randomized Endpoint Classification: Safety/Efficacy Study Intervention Model: Parallel Assignment Masking: Double Blind (Subject, Investigator) Primary Purpose: Treatment |
| Official Title: | A Single-Center, Placebo-Controlled, Rising Dose to Tolerance and Safety Study of TD101, an siRNA Designed for Treatment of Pachyonychia Congenita |
| Estimated Enrollment: | 1 |
| Study Start Date: | January 2008 |
| Study Completion Date: | August 2008 |
| Primary Completion Date: | August 2008 (Final data collection date for primary outcome measure) |
| Arms | Assigned Interventions |
|---|---|
|
Active Comparator: Foot 1
An active drug injection of TD101 is injected into a callus on the bottom of one foot.
|
Drug: TD101
TD101 is injection into a callus on the bottom of one of the patient's feet
|
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Placebo Comparator: Foot 2
An injection of placebo (normal saline) is injected into a callus on the bottom of one foot.
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Drug: Normal saline (placebo)
A normal saline solution (placebo) is injected into one of the patient's feet.
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Eligibility| Ages Eligible for Study: | 10 Years and older |
| Genders Eligible for Study: | Both |
| Accepts Healthy Volunteers: | No |
Inclusion Criteria:
Exclusion Criteria:
Contacts and Locations| United States, Utah | |
| Huntsman Cancer Institute | |
| Salt Lake City, Utah, United States, 84112 | |
| Principal Investigator: | Sancy A Leachman, MD, PhD | PC Project |
More Information
| Responsible Party: | Sancy Leachman/Principal Investigator, PC Project |
| ClinicalTrials.gov Identifier: | NCT00716014 History of Changes |
| Other Study ID Numbers: | 24013 |
| Study First Received: | July 15, 2008 |
| Last Updated: | November 18, 2008 |
| Health Authority: | United States: Food and Drug Administration |
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Pachyonychia Congenita siRNA |
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Nails, Malformed Pachyonychia Congenita Pathological Conditions, Anatomical Ectodermal Dysplasia Skin Abnormalities |
Congenital Abnormalities Skin Diseases, Genetic Genetic Diseases, Inborn Nail Diseases Skin Diseases |