A Phase 3 interventional study of Belimumab and Placebo in Systemic Lupus Erythematosus, sponsored by GlaxoSmithKline. Completed at 47 sites in 3 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-10-04.
Sponsored by GlaxoSmithKline · Phase 3, Interventional, and Treatment
The purpose of this study is to evaluate the efficacy and safety of belimumab in addition to standard therapy compared to placebo in subjects in Northeast Asia with systemic lupus erythematosus (SLE) over a 52 week period.
The purpose of this study is to demonstrate the efficacy and safety of belimumab 10mg/kg administered intravenously (IV) every 4 weeks compared to placebo, in patients with SLE when added to standard of care therapy, as measured by the SLE Responder Index (SRI) at 52 weeks, defined by a composite endpoint using SELENA SLEDAI score, Physician's Global Assessment (PGA) and BILAG A and B organ domain scores.
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Exclusion Criteria:
10mg/kg
Drug: Belimumab
placebo
Drug: Placebo
10mg/kg administered intravenously. Dosing at Weeks 0, 2, and 4, then every 4 weeks through Week 48, with a final evaluation at Week 52. All study subjects will receive standard SLE therapies during the study.
Administered intravenously. Dosing at Weeks 0, 2, and 4, and then every 4 weeks through Week 48, with a final evaluation at Week 52. All study subjects will receive standard SLE therapies during the study.
Percent of Participants Achieving Systemic Lupus Erythematosus (SLE) Responder Index (SRI) Response Rate at Week 52 for Double-blind Phase.
SRI response is a composite index, defined as the percent of participants with \>=4 point reduction from Baseline in safety of estrogen in lupus national assessment (SELENA) systemic lupus erythematosus disease activity index (SLEDAI) score and no worsening (increase of \< 0.30 points from Baseline) in physicians global assessment (PGA) and no new British isles lupus assessment group (BILAG) A organ domain score or 2 new BILAG B organ domain scores compared with Baseline at the time of assessment (at Week 52 of the blinded period). A SELENA SLEDAI score of 0 would suggest no lupus activity; while a score of 105 is the maximum calculable if all items were scored as being present from active lupus. PGA ranges from 0 (no activity) to 3 (severe activity). BILAG has no range. The higher thresholds of SELENA SLEDAI improvement (i.e., SRI5, SRI6, and SRI7) indicates a higher response (SRI5 is a 5 point SELENA SLEDAI reduction, SRI6 is a 6 point reduction, and SRI7 is a 7 point reduction).
Time frame: Week 52
Percent of Participants With >=4 Point Reduction From Baseline in SELENA SLEDAI Score at Week 52 for Double-blind Phase.
The SELENA SLEDAI score is a weighted index for assessing SLE disease activity in which signs and symptoms, laboratory tests and physician's assessment for each of 9 organ system were given a weighted score and summed if present at the time of the visit or in the preceding 10 days. A SELENA SLEDAI score of 0 would suggest no lupus activity; while a score of 105 is the maximum calculable if all items were scored as being present from active lupus. A decrease of 4 points or more equates to a clinically meaningful improvement. The Baseline value of a variable is defined as the value of the variable measured at Day 0 prior to dosing. In case of multiple results on Day 0 prior to dosing, the latest result was used. If a Day 0 value was not available, the last available value prior to Day 0 was used.
Time frame: Baseline (Day 0) and Week 52
Percent of Participants With SRI7 Response at Week 52 for Double-blind Phase.
SRI7 response is defined as the percent of participants with \>=7 point reduction from Baseline in SELENA SLEDAI score and no worsening (increase of \< 0.30 points from Baseline) in PGA and no new BILAG A organ domain score or 2 new BILAG B organ domain scores compared with Baseline at the time of assessment (at Week 52 of the blinded period). A SELENA SLEDAI score of 0 would suggest no lupus activity; while a score of 105 is the maximum calculable if all items were scored as being present from active lupus. PGA ranges from 0 (no activity) to 3 (severe activity). BILAG has no range. The higher thresholds of SELENA SLEDAI improvement (i.e., SRI5, SRI6, and SRI7) indicates a higher response (SRI5 is a 5 point SELENA SLEDAI reduction, SRI6 is a 6 point reduction, and SRI7 is a 7 point reduction).
Time frame: Baseline (Day 0) and Week 52
Number of Days of Daily Prednisone Dose <=7.5 mg/Day and/or Reduced by 50 Percent From Baseline Over 52 Weeks for Double-blind Phase.
Number of days of daily prednisone dose \<=7.5 mg/day and/or reduced by 50 percent over time through each scheduled visit during the blinded period were compared between belimumab and placebo using Rank ANCOVA model which was used for comparing belimumab and placebo. The independent variables in the model included treatment group, Baseline prednisone dose level, country, Baseline SELENA SLEDAI score (\<=9 vs. \>=10) and complement levels (low C3 and/or C4 vs. no low C3 or C4). This analysis was perfomed on the participants who used prednisone \>7.5 mg/day at Baseline.
Time frame: Week 52
Time to First Severe SLE Flare Index (SFI) Flare Over 52 Weeks for Double-blind Phase.
Time to first severe SLE flare is defined as the number of days from first treatment until the participant had an event (event date-treatement start date +1). If a participant had a severe SFI flare and received protocol restricted medication then the event date was the earliest of the first severe SFI flare date, and the treatment failure date. Analysis of severe SFI flare was performed on the modified SELENA SLEDAI SLE flare index in which the modification excluded severe flares that were triggered only by an increase in SELENA SLEDAI score to \>12. Analysis was from Cox proportional hazards model for the comparison between belimumab and placebo adjusting for country, Baseline SELENA SLEDAI score (\<=9 vs. \>=10) and complement levels (low C3 and/or C4 vs. no low C3 or C4).
Time frame: 52 weeks
Percent of Participants Achieving SLE SRI Response Rate for Open-label (OL) Phase
SRI response is a composite index, defined as the percent of participants with \>=4 point reduction from Baseline in SELENA SLEDAI score and no worsening (increase of \< 0.30 points from Baseline) in PGA and no new BILAG A organ domain score or 2 new BILAG B organ domain scores compared with Baseline at time of assessment. Excludes participants with a SELENA SLEDAI score \<4 at baseline. Participants randomized to belimumab in double-blinded (DB) phase, Baseline is last available value before first belimumab dose received in DB phase. Participants randomized to placebo in DB phase, Baseline is last available value before receiving first belimumab dose in OL phase. Observed case data are presented.Year 6 Week 48 is the Exit Visit obtained by slotting the Exit Visit to Week 48. A SELENA SLEDAI score of 0 (no lupus activity) and a score of 105 (maximum). PGA ranges from 0 (no activity) to 3 (severe activity). BILAG has no range.
Time frame: Weeks 24 and 48 for Years 2, 3, 4, 5 and 6
This study consisted of a 52 week blinded treatment period in Northeast Asia (China, Japan, Korea) which was followed by an optional open-label (OL) extension period in China for evaluation of belimumab in participants (par.) with active systemic lupus erythematosus (SLE).
| Milestone | Placebo | Belimumab 10 mg/kg |
|---|---|---|
| Started | 226 | 451 |
| Completed | 170 | 372 |
| Not completed | 56 | 79 |
| Withdrew: Adverse event | 22 | 27 |
| Withdrew: Lack of efficacy | 11 | 7 |
| Withdrew: Protocol violation | 1 | 5 |
| Withdrew: Met protocol defined stopping criteria | 6 | 1 |
| Withdrew: Lost to follow-up | 3 | 8 |
| Withdrew: Physician decision | 4 | 12 |
| Withdrew: Withdrawal by subject | 9 | 19 |
| Milestone | Placebo | Belimumab 10 mg/kg |
|---|---|---|
| Started | 134 | 290 |
| Completed | 69 | 146 |
| Not completed | 65 | 144 |
| Withdrew: Adverse event | 7 | 18 |
| Withdrew: Death | 0 | 1 |
| Withdrew: Lack of efficacy | 3 | 7 |
| Withdrew: Protocol violation | 2 | 5 |
| Withdrew: Lost to follow-up | 4 | 6 |
| Withdrew: Physician decision | 11 | 24 |
| Withdrew: Withdrawal by subject | 37 | 82 |
| Withdrew: Not recorded | 1 | 1 |
SRI response is a composite index, defined as the percent of participants with \>=4 point reduction from Baseline in safety of estrogen in lupus national assessment (SELENA) systemic lupus erythematosus disease activity index (SLEDAI) score and no worsening (increase of \< 0.30 points from Baseline) in physicians global assessment (PGA) and no new British isles lupus assessment group (BILAG) A organ domain score or 2 new BILAG B organ domain scores compared with Baseline at the time of assessment (at Week 52 of the blinded period). A SELENA SLEDAI score of 0 would suggest no lupus activity; while a score of 105 is the maximum calculable if all items were scored as being present from active lupus. PGA ranges from 0 (no activity) to 3 (severe activity). BILAG has no range. The higher thresholds of SELENA SLEDAI improvement (i.e., SRI5, SRI6, and SRI7) indicates a higher response (SRI5 is a 5 point SELENA SLEDAI reduction, SRI6 is a 6 point reduction, and SRI7 is a 7 point reduction).
| Percentage of participants | Placebo | Belimumab 10 mg/kg |
|---|---|---|
| Percent of Participants Achieving Systemic Lupus Erythematosus (SLE) Responder Index (SRI) Response Rate at Week 52 for Double-blind Phase. | 40.1 | 53.8 |
The SELENA SLEDAI score is a weighted index for assessing SLE disease activity in which signs and symptoms, laboratory tests and physician's assessment for each of 9 organ system were given a weighted score and summed if present at the time of the visit or in the preceding 10 days. A SELENA SLEDAI score of 0 would suggest no lupus activity; while a score of 105 is the maximum calculable if all items were scored as being present from active lupus. A decrease of 4 points or more equates to a clinically meaningful improvement. The Baseline value of a variable is defined as the value of the variable measured at Day 0 prior to dosing. In case of multiple results on Day 0 prior to dosing, the latest result was used. If a Day 0 value was not available, the last available value prior to Day 0 was used.
| Percentage of participants | Placebo | Belimumab 10 mg/kg |
|---|---|---|
| Percent of Participants With >=4 Point Reduction From Baseline in SELENA SLEDAI Score at Week 52 for Double-blind Phase. | 42.2 | 55.7 |
SRI7 response is defined as the percent of participants with \>=7 point reduction from Baseline in SELENA SLEDAI score and no worsening (increase of \< 0.30 points from Baseline) in PGA and no new BILAG A organ domain score or 2 new BILAG B organ domain scores compared with Baseline at the time of assessment (at Week 52 of the blinded period). A SELENA SLEDAI score of 0 would suggest no lupus activity; while a score of 105 is the maximum calculable if all items were scored as being present from active lupus. PGA ranges from 0 (no activity) to 3 (severe activity). BILAG has no range. The higher thresholds of SELENA SLEDAI improvement (i.e., SRI5, SRI6, and SRI7) indicates a higher response (SRI5 is a 5 point SELENA SLEDAI reduction, SRI6 is a 6 point reduction, and SRI7 is a 7 point reduction).
| Percentage of participants | Placebo | Belimumab 10 mg/kg |
|---|---|---|
| Percent of Participants With SRI7 Response at Week 52 for Double-blind Phase. | 23.5 | 32.4 |
Number of days of daily prednisone dose \<=7.5 mg/day and/or reduced by 50 percent over time through each scheduled visit during the blinded period were compared between belimumab and placebo using Rank ANCOVA model which was used for comparing belimumab and placebo. The independent variables in the model included treatment group, Baseline prednisone dose level, country, Baseline SELENA SLEDAI score (\<=9 vs. \>=10) and complement levels (low C3 and/or C4 vs. no low C3 or C4). This analysis was perfomed on the participants who used prednisone \>7.5 mg/day at Baseline.
| Days | Placebo | Belimumab 10 mg/kg |
|---|---|---|
| Number of Days of Daily Prednisone Dose <=7.5 mg/Day and/or Reduced by 50 Percent From Baseline Over 52 Weeks for Double-blind Phase. | 0.0 (0.0 to 172.0) | 0.0 (0.0 to 213.5) |
Time to first severe SLE flare is defined as the number of days from first treatment until the participant had an event (event date-treatement start date +1). If a participant had a severe SFI flare and received protocol restricted medication then the event date was the earliest of the first severe SFI flare date, and the treatment failure date. Analysis of severe SFI flare was performed on the modified SELENA SLEDAI SLE flare index in which the modification excluded severe flares that were triggered only by an increase in SELENA SLEDAI score to \>12. Analysis was from Cox proportional hazards model for the comparison between belimumab and placebo adjusting for country, Baseline SELENA SLEDAI score (\<=9 vs. \>=10) and complement levels (low C3 and/or C4 vs. no low C3 or C4).
| Days | Placebo | Belimumab 10 mg/kg |
|---|---|---|
| Time to First Severe SLE Flare Index (SFI) Flare Over 52 Weeks for Double-blind Phase. | NA (NA to NA) | NA (NA to NA) |
SRI response is a composite index, defined as the percent of participants with \>=4 point reduction from Baseline in SELENA SLEDAI score and no worsening (increase of \< 0.30 points from Baseline) in PGA and no new BILAG A organ domain score or 2 new BILAG B organ domain scores compared with Baseline at time of assessment. Excludes participants with a SELENA SLEDAI score \<4 at baseline. Participants randomized to belimumab in double-blinded (DB) phase, Baseline is last available value before first belimumab dose received in DB phase. Participants randomized to placebo in DB phase, Baseline is last available value before receiving first belimumab dose in OL phase. Observed case data are presented.Year 6 Week 48 is the Exit Visit obtained by slotting the Exit Visit to Week 48. A SELENA SLEDAI score of 0 (no lupus activity) and a score of 105 (maximum). PGA ranges from 0 (no activity) to 3 (severe activity). BILAG has no range.
| Percentage of participants | Belimumab 10mg/kg (Open-label Phase) |
|---|---|
| Week 24, Year 2, n=326 | 66.0 |
| Week 48, Year 2, n=299 | 69.6 |
| Week 24, Year 3, n=271 | 72.3 |
| Week 48, Year 3, n=247 | 70.9 |
| Week 24, Year 4, n=233 | 71.7 |
| Week 48, Year 4, n=194 | 76.8 |
| Week 24, Year 5, n= 156 | 81.4 |
| Week 48, Year 5, n= 82 | 80.5 |
| Week 24, Year 6, n= 36 | 86.1 |
| Week 48, Year 6, n= 5 | 60.0 |
Collected over Serious adverse events (SAEs) and non-SAEs were collected from study treatment start and until 16 weeks after the last infusion. The data presented for belimumab open-label group represents safety events period starting from the first belimumab date and up to Year 6 Week 44.. Non-serious events are listed at a 5% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| Placebo (Double-blind Phase) | 1/235 (0.4%) | 43/235 (18.3%) | 108/235 (46%) |
| Belimumab 10 mg/kg (Double-blind Phase) | 0/470 (0%) | 58/470 (12.3%) | 207/470 (44%) |
| Belimumab 10 mg/kg (Open-label Phase) | 1/424 (0.2%) | 96/424 (22.6%) | 263/424 (62%) |
| Event | Placebo (Double-blind Phase) | Belimumab 10 mg/kg (Double-blind Phase) | Belimumab 10 mg/kg (Open-label Phase) |
|---|---|---|---|
| Lupus nephritisRenal and urinary disorders | 5/235 | 5/470 | 12/424 |
| PyrexiaGeneral disorders | 4/235 | 2/470 | 1/424 |
| Herpes zosterInfections and infestations | 2/235 | 6/470 | 6/424 |
| OsteonecrosisMusculoskeletal and connective tissue disorders | 0/235 | 0/470 | 6/424 |
| PneumoniaInfections and infestations | 1/235 | 2/470 | 4/424 |
| Lung infectionInfections and infestations | 2/235 | 0/470 | 2/424 |
| Salmonella sepsisInfections and infestations | 2/235 | 0/470 | 0/424 |
| ProteinuriaRenal and urinary disorders | 2/235 | 0/470 | 0/424 |
| SLE arthritisMusculoskeletal and connective tissue disorders | 2/235 | 0/470 | 0/424 |
| AppendicitisInfections and infestations | 0/235 | 2/470 | 2/424 |
| Event | Placebo (Double-blind Phase) | Belimumab 10 mg/kg (Double-blind Phase) | Belimumab 10 mg/kg (Open-label Phase) |
|---|---|---|---|
| Upper respiratory tract infectionInfections and infestations | 39/235 | 65/470 | 149/424 |
| Viral upper respiratory tract infectionInfections and infestations | 15/235 | 33/470 | 59/424 |
| NasopharyngitisInfections and infestations | 26/235 | 56/470 | 24/424 |
| Urinary tract infectionInfections and infestations | 11/235 | 21/470 | 41/424 |
| Upper respiratory tract infection bacterialInfections and infestations | 12/235 | 16/470 | 37/424 |
| PyrexiaGeneral disorders | 17/235 | 28/470 | 36/424 |
| Herpes zosterInfections and infestations | 10/235 | 23/470 | 34/424 |
| CoughRespiratory, thoracic and mediastinal disorders | 16/235 | 30/470 | 30/424 |
| HeadacheNervous system disorders | 16/235 | 23/470 | 20/424 |
| DiarrhoeaGastrointestinal disorders | 14/235 | 28/470 | 28/424 |
| Age, Continuous(Years) | Placebo | Belimumab 10 mg/kg | Total |
|---|---|---|---|
| Mean | 31.7 ± 9.18 | 32.3 ± 9.65 | 32.1 ± 9.50 |
| Sex: Female, Male(Participants) | Placebo | Belimumab 10 mg/kg | Total |
|---|---|---|---|
| Female | 210 | 419 | 629 |
| Male | 16 | 32 | 48 |
| Race/Ethnicity, Customized(Participants) | Placebo | Belimumab 10 mg/kg | Total |
|---|---|---|---|
| Asian - Central/South Asian Heritage | 2 | 4 | 6 |
| Asian - East Asian Heritage | 195 | 403 | 598 |
| Asian - Japanese Heritage | 24 | 40 | 64 |
| Asian - South East Asian Heritage | 4 | 3 | 7 |
| Asian - Mixed Race | 1 | 1 | 2 |
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Studies of the drug tested here: Belimumab
Lupus Erythematosus, Systemic →