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Bioequivalence Study of Generic Tretinoin 0.1% Microsphere Gel, 0.1% Retin-A Micro® and Placebo

This study has been completed.
Information provided by (Responsible Party):
Spear Pharmaceuticals Identifier:
First received: May 28, 2010
Last updated: October 15, 2014
Last verified: October 2014

The objective will be to assess clinical bioequivalence of 0.1% Retin-A Micro® Gel and Spear Pharmaceutical's generic 0.1% Tretinoin Microsphere Gel with a placebo arm.

Condition Intervention Phase
Drug: Tretinoin microsphere 0.1%
Drug: Brand Retin-A Micro tretinoin microsphere gel 0.1%
Drug: placebo microsphere gel
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Bio-equivalence Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Bioequivalence Study of Generic Tretinoin 0.1% Microsphere Gel, 0.1% Retin-A Micro® and Placebo

Resource links provided by NLM:

Further study details as provided by Spear Pharmaceuticals:

Primary Outcome Measures:
  • Improvement in Acne [ Time Frame: 12 weeks ] [ Designated as safety issue: Yes ]
    Counting of acne lesions both inflammatory and non-inflammatory

Enrollment: 480
Study Start Date: October 2009
Study Completion Date: April 2010
Primary Completion Date: April 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Generic
treatment of acne for 12 weeks
Drug: Tretinoin microsphere 0.1%
Treatment of acne vulgaris
Active Comparator: Brand
Treatment of acne for 12 weeks
Drug: Brand Retin-A Micro tretinoin microsphere gel 0.1%
Treatment of acne vulgaris
Other Name: Retin-A Micro
Placebo Comparator: Placebo
Treatment if acne for 12 weeks as placebo
Drug: placebo microsphere gel
treatment of acne vulgaris

Detailed Description:

Not required


Ages Eligible for Study:   12 Years to 40 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Normal, healthy male and female children and adult
  • Written and verbal informed consent must be obtained. Patients age 12 to 17 (inclusive) must sign an assent for the study and a parent or a legal guardian must sign the informed consent.
  • Women of child-bearing potential must be non-pregnant and non-nursing, and must be willing to avoid pregnancy during the course of the study and during the menstrual cycle following completion of their participation in the study.
  • Able to refrain from the use of all other topical acne medications or antibiotics during the treatment period.
  • Considered reliable and capable of understanding their responsibility and role in the study.

Exclusion Criteria:

  • Significant history or clinical evidence of auto-immune, cardiovascular, gastrointestinal, hematological, hepatic, neurological, pancreatic, or renal disease.
  • Abnormal pre-existing skin condition which might affect the normal course of acne vulgaris (e.g., eczema, psoriasis, albinism, or chronic vesiculobullous disorders).
  • Use topical acne therapy during the two week period prior to study initiation.
  • Use of systemic retinoid treatment within six months prior to study initiation.
  • Pregnant or breast-feeding.
  • Serious psychological illness.
  • Participation in any clinical research study during the 30 day period preceding study initiation.
  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: NCT01135069

United States, Florida
Moore Clinical Research
Land O Lakes, Florida, United States, 34628
Sponsors and Collaborators
Spear Pharmaceuticals
Principal Investigator: Krunal Patel, MD Moore Clinical Research
  More Information

No publications provided

Responsible Party: Spear Pharmaceuticals Identifier: NCT01135069     History of Changes
Other Study ID Numbers: RAM-01
Study First Received: May 28, 2010
Results First Received: May 28, 2013
Last Updated: October 15, 2014
Health Authority: United States: Institutional Review Board

Additional relevant MeSH terms:
Antineoplastic Agents
Dermatologic Agents
Keratolytic Agents
Pharmacologic Actions
Therapeutic Uses processed this record on November 27, 2014