| Primary | Compare the Treatment Groups for the Number of Subjects With Complete Wound Closure Over the 12-Week Treatment Period From Baseline | For each treatment group the area of each subject's target ulcer was measured on a weekly basis, for up to 12 weeks, using a laser-based wound imaging system in conjunction with software to measure area. Following initial closure subjects returned for four weekly visits to confirm wound closure. Wounds that remained closed for four weeks were classified as confirmed closures; if a wound opened at any of the 4 visits it was not considered to have closed. For subjects who dropped from the study prior to the end of treatment, their remaining visit values were imputed using LOCF; wound status of closed was not imputed. | ITT Populations: Subjects who received at least one dose of test article. | Posted | | Number | | participants | | Weekly, over 12 Weeks or until wound closure, which ever occurred first | | | | ID | Title | Description |
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| OG000 | HP802-247 Plus Compression Therapy | HP802-247 (fibrinogen solution & thrombin solution containing living, irradiated, growth arrested keratinocytes and fibroblasts) 260 µL (130 µL, one spray, of each solution) containing 0.5 X 10(6th) cells per mL every 14 days for up to 12 weeks or wound closure, which ever occurred first. Subjects randomized to HP802-247 will receive Vehicle on alternate weeks. HP802-247: Study Dosage / Usage: 260 µL (130 µL, one spray, of each solution) containing 0.5 X 10(6th) cells per mL every 14 days. | | OG001 | HP802-247 Vehicle Plus Compression Therapy | fibrinogen solution & thrombin solution without cells. Subjects randomized to HP802-247 Vehicle will receive Vehicle weekly for up to 12 weeks or wound closure, which ever occurred first. HP802-247 Vehicle: HP802-247 Vehicle consists of two separate components, a fibrinogen solution (Component 1) and a cell free thrombin solution which is identical to Component 2 except that no keratinocytes and no fibroblasts are present. A single dose is created when combined on the wound surface. |
| | | Title | Denominators | Categories |
|---|
| Wounds Closed | | | | Wounds Not Closed | | |
| | Group IDs | Group Description | Statistical Method | Statistical Comment | P-Value | P-Value Comment | Parameter Type | Parameter Value | Dispersion Type | Dispersion Value | Confidence Interval Sides | Confidence Interval % | CI Lower Limit | CI Upper Limit | CI Lower Limit Comment | CI Upper Limit Comment | Estimate Comment | Tested Non-Inferiority | Non-Inferiority Type | Non-Inferiority Comment | Other Analysis Description |
|---|
| | Cochran-Mantel-Haenszel | | .5348 | Analysis adjusted for sites, with significance being at P < 0.05 | | | | | | | | | | | | No | Superiority or Other | | |
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| Secondary | Compare the Efficacy of the Treatment Groups in Achieving Complete Wound Closure, Based on Time in Days to Closure Over the 12-Week Treatment Period From Baseline. | This key secondary outcome was based on a Cox Proportional Hazard Analysis. | ITT Populations: Subjects who received at least one dose of test article. Data were analyzed using the Cox Proportional hazard procedure, with significance being at P < 0.05. | Posted | | Median | Full Range | days | | 12 Weeks | | | | ID | Title | Description |
|---|
| OG000 | HP802-247 Plus Compression Therapy | HP802-247 (fibrinogen solution & thrombin solution containing living, irradiated, growth arrested keratinocytes and fibroblasts) 260 µL (130 µL, one spray, of each solution) containing 0.5 X 10(6th) cells per mL every 14 days for up to 12 weeks or wound closure, which ever occurred first. Subjects randomized to HP802-247 will receive Vehicle on alternate weeks. HP802-247: Study Dosage / Usage: 260 µL (130 µL, one spray, of each solution) containing 0.5 X 10(6th) cells per mL every 14 days. | | OG001 | HP802-247 Vehicle Plus Compression Therapy | fibrinogen solution & thrombin solution without cells. Subjects randomized to HP802-247 Vehicle will receive Vehicle weekly for up to 12 weeks or wound closure, which ever occurred first. HP802-247 Vehicle: HP802-247 Vehicle consists of two separate components, a fibrinogen solution (Component 1) and a cell free thrombin solution which is identical to Component 2 except that no keratinocytes and no fibroblasts are present. A single dose is created when combined on the wound surface. |
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| Secondary | Compare the Efficacy of the Treatment Groups in Achieving Complete Wound Closure, Based on Median Time (Days) to Closure Over the 12-Week Treatment Period From Baseline. | This key secondary outcome was based on a Kaplan-Meier Survival analysis. | ITT Populations: Subjects who received at least one dose of test article. Data were analyzed using Kaplan-Meier Survival analysis, with significance being at P < 0.05. | Posted | | Median | 95% Confidence Interval | days | | 12 weeks | | | | ID | Title | Description |
|---|
| OG000 | HP802-247 Plus Compression Therapy | HP802-247 (fibrinogen solution & thrombin solution containing living, irradiated, growth arrested keratinocytes and fibroblasts) 260 µL (130 µL, one spray, of each solution) containing 0.5 X 10(6th) cells per mL every 14 days for up to 12 weeks or wound closure, which ever occurred first. Subjects randomized to HP802-247 will receive Vehicle on alternate weeks. HP802-247: Study Dosage / Usage: 260 µL (130 µL, one spray, of each solution) containing 0.5 X 10(6th) cells per mL every 14 days. | | OG001 | HP802-247 Vehicle Plus Compression Therapy | fibrinogen solution & thrombin solution without cells. Subjects randomized to HP802-247 Vehicle will receive Vehicle weekly for up to 12 weeks or wound closure, which ever occurred first. HP802-247 Vehicle: HP802-247 Vehicle consists of two separate components, a fibrinogen solution (Component 1) and a cell free thrombin solution which is identical to Component 2 except that no keratinocytes and no fibroblasts are present. A single dose is created when combined on the wound surface. |
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| Secondary | Compare the Treatment Groups for the Proportion of Subjects With Wound Closure at Each of the 12-Week Treatment Period From Baseline | For subjects who dropped from the study, their remaining visit values were imputed using LOCF. Treatment groups were compared for percentage of participants with closed wounds at each treatment visit. | ITT Populations: Subjects who received at least one dose of test article. Analysis was by the Cochrane Mantel Haenszel (CMH) test, adjusted for sites, with significance being at P < 0.05 | Posted | | Number | | percentage of participants | | Weekly, over the 12 week treatment period, or until wound closure, which ever occurred first | | | | ID | Title | Description |
|---|
| OG000 | HP802-247 Plus Compression Therapy | HP802-247 (fibrinogen solution & thrombin solution containing living, irradiated, growth arrested keratinocytes and fibroblasts) 260 µL (130 µL, one spray, of each solution) containing 0.5 X 10(6th) cells per mL every 14 days for up to 12 weeks or wound closure, which ever occurred first. Subjects randomized to HP802-247 will receive Vehicle on alternate weeks. HP802-247: Study Dosage / Usage: 260 µL (130 µL, one spray, of each solution) containing 0.5 X 10(6th) cells per mL every 14 days. | | OG001 | HP802-247 Vehicle Plus Compression Therapy | fibrinogen solution & thrombin solution without cells. Subjects randomized to HP802-247 Vehicle will receive Vehicle weekly for up to 12 weeks or wound closure, which ever occurred first. HP802-247 Vehicle: HP802-247 Vehicle consists of two separate components, a fibrinogen solution (Component 1) and a cell free thrombin solution which is identical to Component 2 except that no keratinocytes and no fibroblasts are present. A single dose is created when combined on the wound surface. |
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| Secondary | Number of Subjects With Durable Wound Healing Over the 3 Months Following Complete Wound Closure | Subjects who completed the treatment period with confirmed wound closure were followed in the post-treatment period for a further two months to determine their closed wound status (remained closed/reopened), giving a measure of persistence of wound closure following completion of treatment. | Due to study termination the data available to assess durability of closure were limited to only the subjects who completed at least one of the follow-up visits. Participants who had CLOSED wounds at completion of treatment; 103 subjects (HP802-247: 49; Vehicle: 54) completed Visit 18, 114 subjects (HP802-247: 57; Vehicle: 57) completed Visit 19 | Posted | | Number | | participants | | Target ulcer status observed at two (visit 1) and three (visit 2) months following initial ulcer closure. | | | | ID | Title | Description |
|---|
| OG000 | HP802-247 Plus Compression Therapy | HP802-247 (fibrinogen solution & thrombin solution containing living, irradiated, growth arrested keratinocytes and fibroblasts) 260 µL (130 µL, one spray, of each solution) containing 0.5 X 10(6th) cells per mL every 14 days for up to 12 weeks or wound closure, which ever occurred first. Subjects randomized to HP802-247 will receive Vehicle on alternate weeks. HP802-247: Study Dosage / Usage: 260 µL (130 µL, one spray, of each solution) containing 0.5 X 10(6th) cells per mL every 14 days. | | OG001 | HP802-247 Vehicle Plus Compression Therapy | |
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| Secondary | Change From Baseline in Pain Associated With the Target Wound at Each of the 12 Double Blind Treatment Weeks | Target ulcer pain was measured using a Visual Analog Scale [Range: 0mm - 100mm]. Subjects marked their pain level on a 100 mm horizontal line, with a short vertical line across the scale, 0 denoting no pain and 100mm the maximum pain. | ITT Populations: Subjects who received at least one dose of test article. Data were analyzed by an ANCOVA, adjusted for site and baseline score. | Posted | | Least Squares Mean | Standard Error | mm | | Baseline and Weekly, over the 12 week treatment period | | | | ID | Title | Description |
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| OG000 | HP802-247 Plus Compression Therapy | HP802-247 (fibrinogen solution & thrombin solution containing living, irradiated, growth arrested keratinocytes and fibroblasts) 260 µL (130 µL, one spray, of each solution) containing 0.5 X 10(6th) cells per mL every 14 days for up to 12 weeks or wound closure, which ever occurred first. Subjects randomized to HP802-247 will receive Vehicle on alternate weeks. HP802-247: Study Dosage / Usage: 260 µL (130 µL, one spray, of each solution) containing 0.5 X 10(6th) cells per mL every 14 days. | | OG001 | HP802-247 Vehicle Plus Compression Therapy | fibrinogen solution & thrombin solution without cells. Subjects randomized to HP802-247 Vehicle will receive Vehicle weekly for up to 12 weeks or wound closure, which ever occurred first. HP802-247 Vehicle: HP802-247 Vehicle consists of two separate components, a fibrinogen solution (Component 1) and a cell free thrombin solution which is identical to Component 2 except that no keratinocytes and no fibroblasts are present. A single dose is created when combined on the wound surface. |
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| Secondary | Change From Baseline in Pain Associated With the Target Leg at Each of the 12 Double Blind Treatment Weeks | Target leg pain were measured using a Visual Analog Scale [Range: 0mm - 100mm]. Subjects marked their pain level on a 100 mm horizontal line, with a short vertical line across the scale, 0 denoting no pain and 100mm the maximum pain. | ITT Populations: Subjects who received at least one dose of test article. Data were analyzed by an ANCOVA, adjusted for site and baseline score. | Posted | | Least Squares Mean | Standard Error | mm | | Baseline and Weekly, over the 12 week treatment period | | | | ID | Title | Description |
|---|
| OG000 | HP802-247 Plus Compression Therapy | HP802-247 (fibrinogen solution & thrombin solution containing living, irradiated, growth arrested keratinocytes and fibroblasts) 260 µL (130 µL, one spray, of each solution) containing 0.5 X 10(6th) cells per mL every 14 days for up to 12 weeks or wound closure, which ever occurred first. Subjects randomized to HP802-247 will receive Vehicle on alternate weeks. HP802-247: Study Dosage / Usage: 260 µL (130 µL, one spray, of each solution) containing 0.5 X 10(6th) cells per mL every 14 days. | | OG001 | HP802-247 Vehicle Plus Compression Therapy | fibrinogen solution & thrombin solution without cells. Subjects randomized to HP802-247 Vehicle will receive Vehicle weekly for up to 12 weeks or wound closure, which ever occurred first. HP802-247 Vehicle: HP802-247 Vehicle consists of two separate components, a fibrinogen solution (Component 1) and a cell free thrombin solution which is identical to Component 2 except that no keratinocytes and no fibroblasts are present. A single dose is created when combined on the wound surface. |
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