Papulopustular Rosacea
Conditions
Brief summary
This is a 16-week, multicenter, randomized, parallel-group, double-blind, controlled study. After assessing eligibility during a screening period of up to 30 days, approximately 320 subjects at least 18 years old who are diagnosed with moderate to severe papulopustular rosacea will be randomized in a 3:3:2 ratio to DFD-29 (40 mg), Doxycycline capsules 40 mg, or Placebo once daily for 16 weeks. Of the 320 subjects, approximately 160 subjects are planned to be enrolled at 15 sites in the US, while the remaining subjects are to be enrolled at 14 sites in the EU.
Detailed description
This is a 16-week, multicenter, randomized, parallel-group, double-blind, controlled study. After assessing eligibility during a screening period of up to 30 days, approximately 320 subjects at least 18 years old who are diagnosed with moderate to severe papulopustular rosacea will be randomized in a 3:3:2 ratio to DFD-29 (40 mg), Doxycycline capsules 40 mg, or Placebo once daily for 16 weeks. Subject visits are scheduled at Screening, Baseline (Day 1), and Weeks 2, 4, 8, 12, and 16. Clinical assessments of efficacy will be conducted based on Investigator's Global Assessment modified scale without erythema (IGA), Clinician's Erythema Assessment (CEA), and total inflammatory lesion count at Weeks 2, 4, 8, 12, and 16 compared to Baseline. Laboratory assessments of blood (hematology and biochemistry) and urine (routine tests) will be conducted at Screening and Week 16 (end of study \[EOS\] or early termination) to assess for any changes in the safety parameters. Other safety assessments include vital signs, physical examination, urine pregnancy tests (for females of childbearing potential), and collection of AE data. The impact of the treatment on the quality of life (QoL) of the subjects will be assessed using the rosacea-specific tool RosaQoL in addition to the Dermatology Life Quality Index (DLQI) at Baseline and Weeks 2, 4, 8, 12, and 16.
Interventions
DFD-29 (40 mg) extended release capsules
Doxycycline 40 mg capsules
Placebo capsules
Sponsors
Study design
Intervention model description
A multinational, multicenter, randomized, parallel-group, double-blind, controlled study.
Eligibility
Inclusion criteria
Key Inclusion Criteria: * Male and female subjects aged 18 years and above. * Subjects must be in good general health as determined by the investigator and supported by the medical history. * Subjects must have a clinical diagnosis of papulopustular rosacea with IGA grade 3 (moderate) or IGA grade 4 (severe) at Baseline. * Subjects must have 15 to 60 (both inclusive) inflammatory lesions (papules and pustules) of rosacea over the face at Baseline. * Subjects must have not more than 2 nodules or cysts at Baseline. Key
Exclusion criteria
* Female subjects who are pregnant or nursing or planning to become pregnant during the study. * Male subjects whose female partner is planning to conceive a child. * Clinically significant abnormal laboratory test results that, in the opinion of the investigator, would compromise the subject's safety or ability to participate in the trial. * History of organ transplant requiring immunosuppression, HIV, or other immune compromised state. * History of lupus-like syndrome, autoimmune hepatitis, vasculitis, or serum sickness. * Any clinically significant condition or situation other than the condition being studied that, in the opinion of the investigator, would interfere with the study evaluations or optimal participation in the study.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Investigator's Global Assessment (IGA) Treatment Success Compared to Placebo. | Baseline to Week 16 | Proportion of subjects with IGA (modified scale without erythema) 'treatment success' - Grade 0 or 1 at Week 16 with at least 2 grade reduction from Baseline to Week 16, in the DFD-29 group compared to Placebo. The modified IGA scale is a 5-point scale from Grade 0 to Grade 4, wherein Grade 0 is Clear, Grade 1 is Near Clear, Grade 2 is Mild, Grade 3 is Moderate and Grade 4 is Severe Rosacea. A lowering of the score with treatment indicates an improvement in the disease condition and a beneficial outcome. |
| Change in Total Inflammatory Lesion Count Compared to Placebo. | Baseline to Week 16. | Total inflammatory lesion count (sum of papules, pustules, and nodules) change from Baseline to Week 16, in the DFD-29 group compared to Placebo. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| IGA Treatment Success Compared to Doxycycline. | Baseline to Week 16. | Proportion of subjects with IGA treatment success at week 16 in the DFD-29 group compared to Doxycycline capsules 40 mg. The IGA is a 5-point scale ranging from '0'-Clear to '4' Severe, in which lower scores indicate a better outcome. |
| Change in Total Inflammatory Lesion Count Compared to Doxycycline. | Baseline to Week 16. | Total inflammatory lesion count change from Baseline to week 16 in the DFD-29 group compared to Doxycycline capsules 40 mg. |
| Clinician's Erythema Assessment (CEA) Change Compared to Placebo. | Baseline to Week 16. | Proportion of subjects with at least 2-grade reduction in CEA score from Baseline to Week 16 in the DFD-29 group compared to Placebo. The CEA is a 5-point scale ranging from '0' - No Redness to '4' - Fiery Redness, in which lower scores indicate a better outcome. |
Countries
Germany, United States
Participant flow
Participants by arm
| Arm | Count |
|---|---|
| DFD-29 DFD-29 (40 mg) extended release capsules
DFD-29: DFD-29 (40 mg) extended release capsules | 123 |
| Doxycycline 40 mg Doxycycline 40 mg modified release capsules
Doxycycline: Doxycycline 40 mg capsules | 125 |
| Placebo Placebo capsules matching DFD-29
Placebo: Placebo capsules | 82 |
| Total | 330 |
Withdrawals & dropouts
| Period | Reason | FG000 | FG001 | FG002 |
|---|---|---|---|---|
| Overall Study | Adverse Event | 2 | 1 | 2 |
| Overall Study | Lost to Follow-up | 1 | 1 | 3 |
| Overall Study | Physician Decision | 0 | 0 | 1 |
| Overall Study | Pregnancy | 1 | 0 | 0 |
| Overall Study | Protocol Violation | 0 | 1 | 1 |
| Overall Study | Withdrawal by Subject | 4 | 9 | 7 |
Baseline characteristics
| Characteristic | Doxycycline 40 mg | DFD-29 | Total | Placebo |
|---|---|---|---|---|
| Age, Continuous | 53.6 years STANDARD_DEVIATION 14.05 | 49.7 years STANDARD_DEVIATION 13.87 | 51.6 years STANDARD_DEVIATION 13.95 | 51.2 years STANDARD_DEVIATION 13.66 |
| Clinician's Erythema Assessment (CEA) Score 0 = None | 1 Participants | 1 Participants | 2 Participants | 0 Participants |
| Clinician's Erythema Assessment (CEA) Score 1 = Mild | 3 Participants | 7 Participants | 14 Participants | 4 Participants |
| Clinician's Erythema Assessment (CEA) Score 2 = Moderate | 50 Participants | 41 Participants | 124 Participants | 33 Participants |
| Clinician's Erythema Assessment (CEA) Score 3 = Significant | 56 Participants | 57 Participants | 146 Participants | 33 Participants |
| Clinician's Erythema Assessment (CEA) Score 4 = Severe | 15 Participants | 17 Participants | 44 Participants | 12 Participants |
| Investigators Global Assessment (IGA) grade Moderate | 111 Participants | 110 Participants | 298 Participants | 77 Participants |
| Investigators Global Assessment (IGA) grade Severe | 14 Participants | 13 Participants | 32 Participants | 5 Participants |
| Race (NIH/OMB) American Indian or Alaska Native | 0 Participants | 0 Participants | 0 Participants | 0 Participants |
| Race (NIH/OMB) Asian | 4 Participants | 1 Participants | 6 Participants | 1 Participants |
| Race (NIH/OMB) Black or African American | 2 Participants | 5 Participants | 8 Participants | 1 Participants |
| Race (NIH/OMB) More than one race | 1 Participants | 1 Participants | 2 Participants | 0 Participants |
| Race (NIH/OMB) Native Hawaiian or Other Pacific Islander | 0 Participants | 0 Participants | 0 Participants | 0 Participants |
| Race (NIH/OMB) Unknown or Not Reported | 0 Participants | 0 Participants | 0 Participants | 0 Participants |
| Race (NIH/OMB) White | 118 Participants | 116 Participants | 314 Participants | 80 Participants |
| Region of Enrollment Germany | 33 Participants | 32 Participants | 86 Participants | 21 Participants |
| Region of Enrollment United States | 80 Participants | 83 Participants | 210 Participants | 47 Participants |
| Sex: Female, Male Female | 84 Participants | 101 Participants | 249 Participants | 64 Participants |
| Sex: Female, Male Male | 41 Participants | 22 Participants | 81 Participants | 18 Participants |
| Total inflammatory lesion counts | 25.0 Lesion count STANDARD_DEVIATION 9.09 | 24.1 Lesion count STANDARD_DEVIATION 7.66 | 24.5 Lesion count STANDARD_DEVIATION 8.27 | 24.2 Lesion count STANDARD_DEVIATION 7.87 |
Adverse events
| Event type | EG000 affected / at risk | EG001 affected / at risk | EG002 affected / at risk |
|---|---|---|---|
| deaths Total, all-cause mortality | 0 / 122 | 0 / 121 | 0 / 82 |
| other Total, other adverse events | 48 / 122 | 37 / 121 | 27 / 82 |
| serious Total, serious adverse events | 2 / 122 | 0 / 121 | 1 / 82 |
Outcome results
Change in Total Inflammatory Lesion Count Compared to Placebo.
Total inflammatory lesion count (sum of papules, pustules, and nodules) change from Baseline to Week 16, in the DFD-29 group compared to Placebo.
Time frame: Baseline to Week 16.
Population: Intent-to-Treat Subjects
| Arm | Measure | Value (LEAST_SQUARES_MEAN) | Dispersion |
|---|---|---|---|
| DFD-29 | Change in Total Inflammatory Lesion Count Compared to Placebo. | -18.1 lesions | Standard Error 0.66 |
| Placebo | Change in Total Inflammatory Lesion Count Compared to Placebo. | -11.2 lesions | Standard Error 0.86 |
Investigator's Global Assessment (IGA) Treatment Success Compared to Placebo.
Proportion of subjects with IGA (modified scale without erythema) 'treatment success' - Grade 0 or 1 at Week 16 with at least 2 grade reduction from Baseline to Week 16, in the DFD-29 group compared to Placebo. The modified IGA scale is a 5-point scale from Grade 0 to Grade 4, wherein Grade 0 is Clear, Grade 1 is Near Clear, Grade 2 is Mild, Grade 3 is Moderate and Grade 4 is Severe Rosacea. A lowering of the score with treatment indicates an improvement in the disease condition and a beneficial outcome.
Time frame: Baseline to Week 16
Population: Intent-to-Treat Subjects
| Arm | Measure | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|
| DFD-29 | Investigator's Global Assessment (IGA) Treatment Success Compared to Placebo. | 74 Participants |
| Placebo | Investigator's Global Assessment (IGA) Treatment Success Compared to Placebo. | 22 Participants |
Change in Total Inflammatory Lesion Count Compared to Doxycycline.
Total inflammatory lesion count change from Baseline to week 16 in the DFD-29 group compared to Doxycycline capsules 40 mg.
Time frame: Baseline to Week 16.
Population: Intent-to-Treat Subjects
| Arm | Measure | Value (LEAST_SQUARES_MEAN) | Dispersion |
|---|---|---|---|
| DFD-29 | Change in Total Inflammatory Lesion Count Compared to Doxycycline. | -18.1 lesions | Standard Error 0.71 |
| Placebo | Change in Total Inflammatory Lesion Count Compared to Doxycycline. | -14.6 lesions | Standard Error 0.71 |
Clinician's Erythema Assessment (CEA) Change Compared to Placebo.
Proportion of subjects with at least 2-grade reduction in CEA score from Baseline to Week 16 in the DFD-29 group compared to Placebo. The CEA is a 5-point scale ranging from '0' - No Redness to '4' - Fiery Redness, in which lower scores indicate a better outcome.
Time frame: Baseline to Week 16.
Population: Intent-to-Treat Subjects
| Arm | Measure | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|
| DFD-29 | Clinician's Erythema Assessment (CEA) Change Compared to Placebo. | 30 Participants |
| Placebo | Clinician's Erythema Assessment (CEA) Change Compared to Placebo. | 10 Participants |
IGA Treatment Success Compared to Doxycycline.
Proportion of subjects with IGA treatment success at week 16 in the DFD-29 group compared to Doxycycline capsules 40 mg. The IGA is a 5-point scale ranging from '0'-Clear to '4' Severe, in which lower scores indicate a better outcome.
Time frame: Baseline to Week 16.
Population: Intent-to-Treat Subjects
| Arm | Measure | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|
| DFD-29 | IGA Treatment Success Compared to Doxycycline. | 74 Participants |
| Placebo | IGA Treatment Success Compared to Doxycycline. | 39 Participants |