Efficacy and Safety of CIP-Isotretinoin in Patients With Severe Recalcitrant Nodular Acne
Summary
The registered summary isn't in our current data snapshot. Read it on the ClinicalTrials.gov record ↗. Why? →
Investigators
The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.
- James J. Leyden, MD
University of Pennsylvania
Study Chair - Jason A. Gross, PharmD
Cipher Pharmaceuticals Inc.
Study Director
A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.
Sites
49 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.
- Derm Research @ 888 Inc.
Vancouver, British Columbia, Canada
- Dermadvances Research
Winnipeg, Manitoba, Canada
- Durondel C.P. Inc
Moncton, New Brunswick, Canada
- Newlab Clinical Research Inc.
St. John's, Newfoundland and Labrador, Canada
- Ultranova Skincare
Barrie, Ontario, Canada
- Dermatrials Research
Hamilton, Ontario, Canada
- the Guenther Dermatology Research Centre
London, Ontario, Canada
- Lynderm Research Inc.
Markham, Ontario, Canada
- North Bay Dermatology Centre
North Bay, Ontario, Canada
- Institute of Cosmetic and Laser Surgery
Oakville, Ontario, Canada
- K. Papp Clinical Research
Waterloo, Ontario, Canada
- Windsor Clinical Research
Windsor, Ontario, Canada
- Total Skin & Beauty Dermatology Center
Birmingham, Alabama, United States
- Burke Pharmaceutical Research
Hot Springs, Arkansas, United States
- Center for Dermatology Clinical Research
Fremont, California, United States
- Dermatology Research Associates
Los Angeles, California, United States
- Dermatology Specialists
Oceanside, California, United States
- Skin Surgery Medical Group, Inc.
San Diego, California, United States
- Horizons Clinical Research Center
Denver, Colorado, United States
- Ameriderm Research
Jacksonville, Florida, United States
- North Florida Dermatology Associates, Pa
Jacksonville, Florida, United States
- Park Avenue Dermatology
Orange Park, Florida, United States
- Ameriderm Research
Ormond Beach, Florida, United States
- Peachtree Dermatology Associates, Pc
Atlanta, Georgia, United States
- Medaphase Inc.
Newnan, Georgia, United States
- Northwest Clinical Trials
Boise, Idaho, United States
- Northwest Clinical Trials
Nampa, Idaho, United States
- Dawes Fretzin Clinical Research
Indianapolis, Indiana, United States
- the Indiana Clinical Trials Center, Pc
Plainfield, Indiana, United States
- the South Bend Clinic, Llp
South Bend, Indiana, United States
- Dermatology and Skin Cancer Specialists / Pediaresearch, Llc
Owensboro, Kentucky, United States
- Activmed Practices & Research
Haverhill, Massachusetts, United States
- Great Lakes Research Group
Bay City, Michigan, United States
- Hamzavi Dermatology
Fort Gratiot, Michigan, United States
- Minnesota Clinical Study Center
Fridley, Minnesota, United States
- Skin Specialists, Pc
Omaha, Nebraska, United States
- Comprehensive Clinical Research
Berlin, New Jersey, United States
- Haber Dermatology, Clinical Research Center
South Euclid, Ohio, United States
- Oregon Dermatology and Research Center
Portland, Oregon, United States
- Paddington Testing Company Inc.
Philadelphia, Pennsylvania, United States
Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.
Drugs studied
No drug or biological interventions are in our data for this study — it may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →
Registration & key dates
Registry attributes as recorded on the ClinicalTrials.gov study record.
- Start
- 30 Sept 2009
- Primary completion
- 31 May 2011
- Completion
- 31 May 2011
- Last update posted
- 4 Jul 2014
- Registered enrollment
- 925
- Registry id
- NCT00975143
Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 12 Jul 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.