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A Phase III study of Isotretinoin

A Double-Blind, Randomized, Phase 3, Parallel group, Multi-center study, Evaluating the Efficacy and Safety of Isotretinoin in Patients with Severe Recalcitrant Acne

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2031240401
Enrollment
70
Registered
2024-10-11
Start date
2024-11-26
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Severe Recalcitrant Acne

Interventions

The study drug will be taken orally twice daily. The dosage will be determined based on the body weight on the day of randomization. During the first 4 weeks approximately 0.4 mg/kg/day will be admin

Sponsors

Tamura Kazuya
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: (1) Patients aged between 12 and 49 years with acne. (2) Patients with at least 10 inflammatory nodules/cysts. (3) Patients with IGA greater than or equal to 4 (Severe) (4) Patients who have previously received the treatments for acne for a certain duration but are not responding

Exclusion criteria

Exclusion criteria: (1) Patients with serious cardiac, hepatic, renal, pulmonary, hematologic diseases, etc., history or complications considered inappropriate by the investigator to participate in the study. (2) Patients who have not passed 120 days on the first day of treatment, after participation (the last dose of the study drugs or test drugs) in other clinical studies, post-marketing clinical studies, or clinical research, or who are currently participating in other clinical studies, post-marketing clinical studies or clinical research. (3) Patients who are pregnant or lactating, patients who may be pregnant, or patients who are unwilling to use contraception in an appropriate manner as instructed by the investigator during the study period. (4) Patients with a history or complications of mental disorders (depression, psychosis, suicidal ideation, etc.) (5) Patients with a history or complications of severe ocular disorders (corneal opacity, decreased night vision, keratitis, etc.) (6) Patients with severe musculoskeletal or connective tissue disorders (e.g., severe arthralgia, myalgia, low back pain, muscle cramps, rhabdomyolysis) (7) Patients who are considered by the investigator to be ineligible for the study

Design outcomes

Primary

MeasureTime frame
The proportion of patients with at least a 90% reduction from Baseline to Week 20 in the total number of inflammatory nodular/cystic lesions

Secondary

MeasureTime frame
1. Percentage change and number of change in total number of inflammatory nodular/cystic lesions 2. Proportion of patients with a certain reduction in the total number of inflammatory nodular/cystic lesions 3. Proportion of patients with IGA success (IGA score 0 or 1) 4. Percentage change and number of change in the total number of inflammatory lesions 5. Percentage change of reduction in DLQI/CDLQI score

Contacts

Public ContactContact for Clinical Trial Information

Sun Pharma Japan Limited

JPS.clinicaltrial@sunpharma.com+81-3-6432-0201

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026