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Topical PH-10 Aqueous Hydrogel and Photodynamic Therapy for Psoriasis

This study has been terminated.
(Change of dose regimen (new protocol))
Information provided by:
Provectus Pharmaceuticals Identifier:
First received: November 7, 2007
Last updated: July 7, 2009
Last verified: July 2009

This is an open label, single center, controlled study with each subject's two treatment plaque areas assigned by the investigator 1:1 to (a) PH-10 with ambient light exposure and (b) PH-10 with 544 nm LED light illumination at 10 J/cm2. A third plaque area will receive no treatment and serve as a control.

Subjects with at least three distinct, stable study plaque areas will receive the experimental therapy to two treatment plaque areas twice a week (2-5 days apart) for the lesser of 12 weeks or until remission is observed in the treatment plaque areas. If remission is observed in a treatment plaque area then treatment of that area will be discontinued and the area assessed weekly. A third plaque area (control plaque area) will receive no drug or light treatment and serve as an internal control.

Primary efficacy will be assessed 12 weeks after initial PH-10 treatment. Subjects will be followed for a total of 16 weeks to allow assessment of Durability of Response of treated lesions and comprehensive follow-up of adverse events.

Condition Intervention Phase
Plaque Psoriasis Drug: PH-10 (rose bengal disodium 0.001%) Drug: Control Phase 2

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Phase 2 Study of Topical PH-10 Aqueous Hydrogel and Photodynamic Therapy for the Treatment of Plaque Psoriasis

Resource links provided by NLM:

Further study details as provided by Provectus Pharmaceuticals:

Primary Outcome Measures:
  • Treatment Success, defined as 0 or 1 on all Psoriasis Severity Index components (erythema, induration, and scaling) and 0 or 1 on the Plaque Response scale. [ Time Frame: 12 weeks ]

Secondary Outcome Measures:
  • Change in Pruritus of subject's treatment and control plaque areas using a self-assessment scale of 0-4. [ Time Frame: 12 weeks ]
  • Time to Remission (TTR) based on the (a) number of treatments and (b) days elapsed until Treatment Success is noted in each treatment plaque area. [ Time Frame: 12 weeks ]
  • Durability of Response based on plaque areas exhibiting Treatment Success that retain this level of response. [ Time Frame: 16 weeks ]
  • Adverse Experience. [ Time Frame: 16 weeks ]

Estimated Enrollment: 25
Study Start Date: November 2007
Estimated Study Completion Date: July 2009
Primary Completion Date: June 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
Each subject's study plaque areas will be assigned by the investigator to two PH-10 treatment plaque areas and one control plaque area.
Drug: PH-10 (rose bengal disodium 0.001%)

PH-10 with 544 nm LED light illumination


PH-10 with ambient light exposure

Drug: Control
No treatment control.


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

Inclusion Criteria:

  • Stable, moderate to severe plaque psoriasis in at least three distinct plaque areas, each separated by at least a 2.5-cm band of normal skin. Study plaque areas, each covering a contiguous area up to 15 x 35 cm in size, should have a minimum plaque size of 2 cm2. All study plaque areas must be on the trunk or extremities (excluding palms, soles, scalp, and facial or intertriginous sites).
  • Fitzpatrick skin type I-VI.
  • Ability to understand and sign the informed consent document.

Exclusion Criteria:

  • Female subjects of childbearing potential who are pregnant, attempting to conceive, or nursing an infant.
  • Subjects who have received PUVA or UVB light therapy or systemic antipsoriatic therapy within 4 weeks of study treatment (two weeks for methotrexate).
  • Subjects who have received topical antipsoriatic therapy (including corticosteroids, tar, anthralin, or Vitamin D analogs) to the study plaque areas within 2 weeks of study treatment.
  • Subjects who have received any photosensitizing or phototoxic drug within 4 weeks of study treatment.
  • Subjects who have received any approved biologic drug therapy for psoriasis within 3 months or 5 half-lives of study treatment.
  • Subjects who have participated in a clinical research study within 4 weeks of study treatment.
  • Subjects with a history of porphyria, systemic lupus erythematosus or xeroderma pigmentosum.
  • Subjects with clinical conditions that, in the opinion of the Principal Investigator, may pose a health risk to the subject by being involved in the study or detrimentally affect regular follow-up of the subject.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00555646

United States, New York
Mount Sinai School of Medicine
New York, New York, United States, 10029
Sponsors and Collaborators
Provectus Pharmaceuticals
Principal Investigator: Amir Larian, MD Icahn School of Medicine at Mount Sinai
  More Information

Responsible Party: Eric Wachter, Ph.D./Vice President, Provectus Pharmaceuticals, Inc. Identifier: NCT00555646     History of Changes
Other Study ID Numbers: PH-10-PS-21
Study First Received: November 7, 2007
Last Updated: July 7, 2009

Additional relevant MeSH terms:
Skin Diseases, Papulosquamous
Skin Diseases processed this record on September 19, 2017