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UT-15C SR in the Treatment of Critical Limb Ischemia

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified March 2007 by Southern Arizona Vascular Institute.
Recruitment status was:  Recruiting
Southern Illinois University
Information provided by:
Southern Arizona Vascular Institute Identifier:
First received: March 7, 2007
Last updated: NA
Last verified: March 2007
History: No changes posted
This study will evaluate UT-15C sustained release tablets in subjects experiencing ischemic lower limb rest pain related to advanced peripheral arterial disease. Rest pain is one of the primary management issues of severe arterial occlusive disease and may lead to amputation when the pain becomes intolerable and unresponsive to narcotic analgesia. Rest pain also impacts the quality of sleep and mobility with frequent interruptions in sleep and decreased mobility. Treprostinil sodium (Remodulin®) has been studies in several small open-label studies and has been shown to be safe as well as an effective agent for ischemic rest pain when given by subcutaneous or intravenous delivery. However, these forms of administration have patient convenience limitations, including the need for an infusion device and associated pain at the site of infusion with subcutaneous delivery. UT-15C may allow patients suffering from CLI to benefit from the simplicity of an oral dosage form

Condition Intervention Phase
Critical Limb Ischemia
Drug: UT-15C SR (treprostinil diethanolamine) 1mg oral tablets
Phase 2

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Supportive Care
Official Title: An Investigator Initiated Eight Week Two Center Open-Label Pilot Study of the Tolerability and Safety of Oral UT-15C (Treprostinil Diethanolamine)SR Tablets in Patients With Critical Limb Ischemia (CLI) and Ischemic Rest Pain

Resource links provided by NLM:

Further study details as provided by Southern Arizona Vascular Institute:

Primary Outcome Measures:
  • To assess the tolerability and safety of UT-15C tablets in subjects with critical limb ischemia (CLI) and ischemic rest pain

Secondary Outcome Measures:
  • To assess the effect of UT-15C on the following disease symptoms associated with CLI:
  • ž Ischemic rest pain
  • ž Sleep interference
  • ž Ambulatory status
  • ž Ischemic wound healing (if applicable)
  • To obtain peak and trough treprostinil plasma levels in CLI subjects

Estimated Enrollment: 20
Study Start Date: November 2006
Detailed Description:

This study is an eight week, two center, open-label study assessing the tolerability, safety, and efficacy of oral UT-15C sustained release tablets in subjects with CLI and ischemic lower limb rest pain, with or without an ischemic wound present. Conventional therapy should be continued without changes over the course of the study for all subjects.

Group 1: The first ten subjects to enroll in the study will be assigned to receive an initial dose of 1mg. The dose will be titrated upward every seven days, depending on tolerability, to a maximum dose of 4mg/day .

Group 2: The last ten subjects to enroll in the study will be assigned to receive an initial dose of 1mg. The dose will be titrated upward every seven days, depending on tolerability to a maximum dose of 8 mg/day .


Ages Eligible for Study:   45 Years to 85 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Have an ankle systolic pressure ≤ 60 mm/Hg OR ABI ≤ 0.60 OR toe systolic pressure ≤ 60 mm/Hg OR an arteriogram showing at least one level of occlusion of lower extremity arteries.
  2. Have been taking analgesics to control ischemic rest pain for at least two weeks at Baseline.
  3. Have signed an appropriate consent for participation in this study.
  4. If female, be physiologically incapable of childbearing or practicing acceptable methods of birth c

Exclusion Criteria:

  1. Have had a vascular surgery or other vascular procedure to treat their CLI within 30 days prior to study entry.
  2. Have a planned or scheduled vascular surgery or endovascular procedure.
  3. Be currently taking any investigational drugs for CLI.
  4. Have received prostaglandins such as PGE1, epoprostenol (Flolan®), or any other prostacyclin (PGI2) or prostacyclin analog in the past 30 days.
  5. Be hemodynamically unstable or have acute renal failure, cardiac failure or pulmonary failure.
  6. Have a diagnosis of Stage IVb (Fontaine) or Stage 6 (Rutherford scale) Critical Limb Ischemia due to documented peripheral arterial disease
  7. Have an unhealed incision(s) from a toe or transmetatarsal amputation at Baseline.
  8. Have any wound with significant gangrene or exposed tendons.
  Contacts and Locations
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Please refer to this study by its identifier: NCT00445159

United States, Arizona
Southern Arizona Vascular Institute Recruiting
Tucson, Arizona, United States, 85704
Contact: Sonia Voigt, RN    520-297-5846   
Principal Investigator: Scott S Berman, MD         
United States, Illinois
Southern Illinois University School of Medicine Recruiting
Springfield, Illinois, United States, 62794-9638
Contact: Carol Buettner    217-545-2320   
Principal Investigator: Colleen Johnson, MD         
Sponsors and Collaborators
Southern Arizona Vascular Institute
Southern Illinois University
Principal Investigator: Colleen Johnson, MD Southern Illinois University
Principal Investigator: Scott S Berman, MD Southern Arizona Vascular Institute
  More Information Identifier: NCT00445159     History of Changes
Other Study ID Numbers: UT-15C
Study First Received: March 7, 2007
Last Updated: March 7, 2007

Keywords provided by Southern Arizona Vascular Institute:
UT-15C SR, Peripheral Vascular Disease, treprostinil

Additional relevant MeSH terms:
Pathologic Processes
Antihypertensive Agents processed this record on May 25, 2017