Skip to content

Open Label Extension Study of Epratuzumab in Subjects With Systemic Lupus Erythematosus

A Phase 3, Multicenter, Open-label, Extension Study to Assess the Safety and Tolerability of Epratuzumab Treatment in Systemic Lupus Erythematosus Subjects

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01408576
Acronym
EMBODY4
Enrollment
1250
Registered
2011-08-03
Start date
2011-07-31
Completion date
2016-02-29
Last updated
2018-10-03

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

Conditions

Systemic Lupus Erythematosus

Keywords

Lupus, Monoclonal antibody, B-Cell immunotherapy, Epratuzumab

Brief summary

The primary objective of the study is assess the safety and tolerability of long-term epratuzumab treatment in subjects with Systemic Lupus Erythematosus (SLE)

Detailed description

Treatment period was extended by 2 years to a total of 4 years and an amendment was prepared accordingly.

Interventions

DRUGEpratuzumab

600 mg infusions delivered weekly for a total of 4 consecutive weeks (cumulative dose 2400 mg) over eight 12-week treatment cycles

Sponsors

UCB Pharma
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Subject has completed the double-blind study SL0009 (NCT01262365) or SL0010 (NCT01261793) or terminated prematurely at Week 16 or later in SL0009 or SL0010 due to lack of efficacy and would, in the opinion of the investigator, continue to benefit from continued epratuzumab treatment * Subject has completed open-label study SL0006 (NCT00383513) or SL0008 (NCT00660881), and would, in the opinion of the investigator, continue to benefit from continued epratuzumab treatment * Women of childbearing potential must agree to use an acceptable method of birth control

Exclusion criteria

* Subjects with active, severe, neuropsychiatric SLE, defined as any neuropsychiatric element scoring British Isles Lupus Assessment Group Index (BILAG) level A disease * Subjects with active, severe SLE disease activity which involves the renal system * Subjects with concurrent relevant medical conditions like defined chronic infections or high risk of new significant infections * Substance abuse or dependence * History of malignant cancer * Subjects with any other condition which, in the investigator's judgment, would make the subject unsuitable for inclusion

Design outcomes

Primary

MeasureTime frameDescription
Number of Subjects Prematurely Discontinuing Due to a Treatment-emergent Adverse Event (TEAE) During the Treatment Period (Maximum 96 Weeks)During the treatment period (through Week 96)A TEAE is any untoward medical occurrence in a patient or clinical investigation subject administered a pharmaceutical product, which does not necessarily have a causal relationship with this treatment.
Percentage of Subjects Prematurely Discontinuing Due to a Treatment-emergent Adverse Event (TEAE) During the Treatment Period (Maximum 96 Weeks)During the treatment period (through Week 96)A TEAE is any untoward medical occurrence in a patient or clinical investigation subject administered a pharmaceutical product, which does not necessarily have a causal relationship with this treatment.
Number of Subjects Reporting at Least 1 Serious Adverse Event (SAE) During the Treatment Period (Maximum 96 Weeks)During the treatment period (through Week 96)A SAE is a treatment-emergent adverse event (TEAE) that the investigator classifies as serious. This includes: * Death * Life-threatening * Significant or persistent disability/incapacity * Congenital anomaly/birth defect (including that occurring in a fetus) * Important medical event that, based upon appropriate medical judgment, may jeopardize the patient or subject and may require medical or surgical intervention to prevent 1 of the other outcomes listed in the definition of serious * Initial inpatient hospitalization or prolongation of hospitalization
Percentage of Subjects Reporting at Least 1 Serious Adverse Event (SAE) During the Treatment Period (Maximum 96 Weeks)During the treatment period (through Week 96)A SAE is a treatment-emergent adverse event (TEAE) that the investigator classifies as serious. This includes: * Death * Life-threatening * Significant or persistent disability/incapacity * Congenital anomaly/birth defect (including that occurring in a fetus) * Important medical event that, based upon appropriate medical judgment, may jeopardize the patient or subject and may require medical or surgical intervention to prevent 1 of the other outcomes listed in the definition of serious * Initial inpatient hospitalization or prolongation of hospitalization

Secondary

MeasureTime frameDescription
Percentage of Subjects Meeting Treatment Response Criteria According to a Combined Response IndexWeek 48Combined response index is a response variable (yes/no) incorporating the following criteria for achievement of responder status (ie, all criteria must be met to achieve responder status): (1) British Isles Lupus Activity Group (BILAG) improvement, (2) No worsening in Systemic Lupus Erythematosus Activity Index (SLEDAI), (3) No worsening in Physician's Global Assessment of Disease, and (4) No disallowed changes in concomitant medications, with disallowed changes including mainly increases in corticosteroids, immunosuppressants, and antimalarials.
The Percent of Subjects Meeting Treatment Response Criteria According to a Combined Response IndexWeek 96Combined response index is a response variable (yes/no) incorporating the following criteria for achievement of responder status (ie, all criteria must be met to achieve responder status): (1) British Isles Lupus Activity Group (BILAG) improvement, (2) No worsening in Systemic Lupus Erythematosus Activity Index (SLEDAI), (3) No worsening in Physician's Global Assessment of Disease, and (4) No disallowed changes in concomitant medications, with disallowed changes including mainly increases in corticosteroids, immunosuppressants, and antimalarials.
Number of Subjects Meeting Treatment Response Criteria According to a Combined Response IndexAt Week 48Combined response index is a response variable (yes/no) incorporating the following criteria for achievement of responder status (ie, all criteria must be met to achieve responder status): (1) British Isles Lupus Activity Group (BILAG) improvement, (2) No worsening in Systemic Lupus Erythematosus Activity Index (SLEDAI), (3) No worsening in Physician's Global Assessment of Disease, and (4) No disallowed changes in concomitant medications, with disallowed changes including mainly increases in corticosteroids, immunosuppressants, and antimalarials.

Countries

Australia, Belgium, Brazil, Bulgaria, Canada, Czechia, Estonia, France, Germany, Hong Kong, Hungary, Israel, Italy, Lithuania, Mexico, Poland, Romania, Russia, South Africa, South Korea, Spain, Taiwan, Ukraine, United Kingdom, United States

Participant flow

Recruitment details

The study started to enroll patients in July 2011 and concluded in February 2016.

Pre-assignment details

Participant Flow refers to the Enrolled Set, that consisted of all subjects who gave informed consent.

Participants by arm

ArmCount
Enrollment Cohort 1 Epratuzumab 600 mg Per Week (ES)
Enrolled Set (ES) of subjects enrolled prior to the approval of Protocol Amendment 2. 600 mg infusions delivered weekly for a total of 4 consecutive weeks (cumulative dose 2400 mg) over sixteen 12-week treatment cycles
244
Enrollment Cohort 2 Epratuzumab 1200 mg Q2W (ES)
Enrolled Set (ES) of subjects enrolled prior to the approval of Protocol Amendment 2 1200 mg infusions delivered every other week (Q2W) for a total of 4 weeks (cumulative dose 2400 mg) over sixteen 12 week treatment cycles
498
Enrollment Cohort 2 Epratuzumab 600 mg Per Week (ES)
Enrolled Set (ES) of subjects enrolled prior to the approval of Protocol Amendment 2 600 mg infusions delivered weekly for a total of 4 consecutive weeks (cumulative dose 2400 mg) over sixteen 12-week treatment cycles
508
Total Title1,250
Total2,500

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyAE, non-serious non-fatal121911
Overall StudyAE, serious fatal441
Overall StudyAE, unknown type010
Overall StudyLack of Efficacy173048
Overall StudyLost to Follow-up10917
Overall StudyOther101618
Overall StudyProtocol Violation122
Overall StudySAE, non-fatal112314
Overall StudySAE, non-fatal+AE, non-serious non-fatal011
Overall StudySponsor terminated study89333330
Overall StudyWithdrawal by Subject346066

Baseline characteristics

CharacteristicEnrollment Cohort 1 Epratuzumab 600 mg Per Week (ES)Enrollment Cohort 2 Epratuzumab 1200 mg Q2W (ES)Enrollment Cohort 2 Epratuzumab 600 mg Per Week (ES)Total Title
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
5 Participants9 Participants18 Participants32 Participants
Age, Categorical
Between 18 and 65 years
239 Participants489 Participants490 Participants1218 Participants
Age, Continuous41.0 years
STANDARD_DEVIATION 12
41.9 years
STANDARD_DEVIATION 11.5
42.5 years
STANDARD_DEVIATION 11.9
42.0 years
STANDARD_DEVIATION 11.7
Sex: Female, Male
Female
226 Participants467 Participants478 Participants1171 Participants
Sex: Female, Male
Male
18 Participants31 Participants30 Participants79 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
deaths
Total, all-cause mortality
4 / 2444 / 4971 / 5075 / 7519 / 1,248
other
Total, other adverse events
177 / 244296 / 497306 / 507483 / 751779 / 1,248
serious
Total, serious adverse events
81 / 244119 / 497104 / 507185 / 751304 / 1,248

Outcome results

Primary

Number of Subjects Prematurely Discontinuing Due to a Treatment-emergent Adverse Event (TEAE) During the Treatment Period (Maximum 96 Weeks)

A TEAE is any untoward medical occurrence in a patient or clinical investigation subject administered a pharmaceutical product, which does not necessarily have a causal relationship with this treatment.

Time frame: During the treatment period (through Week 96)

Population: Safety Set (SS) which consisted of all subjects who had received at least 1 partial dose of study medication during SL0012. A partial dose of study medication was defined as any infusion during which the subject received more than (\>) 0mL of study medication.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Enrollment Cohort 1 Epratuzumab 600 mg Per Week (ES)Number of Subjects Prematurely Discontinuing Due to a Treatment-emergent Adverse Event (TEAE) During the Treatment Period (Maximum 96 Weeks)26 Participants
Enrollment Cohort 2 Epratuzumab 1200 mg Q2W (ES)Number of Subjects Prematurely Discontinuing Due to a Treatment-emergent Adverse Event (TEAE) During the Treatment Period (Maximum 96 Weeks)45 Participants
Enrollment Cohort 2 Epratuzumab 600 mg Per Week (ES)Number of Subjects Prematurely Discontinuing Due to a Treatment-emergent Adverse Event (TEAE) During the Treatment Period (Maximum 96 Weeks)25 Participants
All Epratuzumab 600 mg Per WeekNumber of Subjects Prematurely Discontinuing Due to a Treatment-emergent Adverse Event (TEAE) During the Treatment Period (Maximum 96 Weeks)51 Participants
All SubjectsNumber of Subjects Prematurely Discontinuing Due to a Treatment-emergent Adverse Event (TEAE) During the Treatment Period (Maximum 96 Weeks)96 Participants
Primary

Number of Subjects Reporting at Least 1 Serious Adverse Event (SAE) During the Treatment Period (Maximum 96 Weeks)

A SAE is a treatment-emergent adverse event (TEAE) that the investigator classifies as serious. This includes: * Death * Life-threatening * Significant or persistent disability/incapacity * Congenital anomaly/birth defect (including that occurring in a fetus) * Important medical event that, based upon appropriate medical judgment, may jeopardize the patient or subject and may require medical or surgical intervention to prevent 1 of the other outcomes listed in the definition of serious * Initial inpatient hospitalization or prolongation of hospitalization

Time frame: During the treatment period (through Week 96)

Population: Safety Set (SS) which consisted of all subjects who had received at least 1 partial dose of study medication during SL0012. A partial dose of study medication was defined as any infusion during which the subject received \>0mL of study medication.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Enrollment Cohort 1 Epratuzumab 600 mg Per Week (ES)Number of Subjects Reporting at Least 1 Serious Adverse Event (SAE) During the Treatment Period (Maximum 96 Weeks)81 Participants
Enrollment Cohort 2 Epratuzumab 1200 mg Q2W (ES)Number of Subjects Reporting at Least 1 Serious Adverse Event (SAE) During the Treatment Period (Maximum 96 Weeks)119 Participants
Enrollment Cohort 2 Epratuzumab 600 mg Per Week (ES)Number of Subjects Reporting at Least 1 Serious Adverse Event (SAE) During the Treatment Period (Maximum 96 Weeks)104 Participants
All Epratuzumab 600 mg Per WeekNumber of Subjects Reporting at Least 1 Serious Adverse Event (SAE) During the Treatment Period (Maximum 96 Weeks)185 Participants
All SubjectsNumber of Subjects Reporting at Least 1 Serious Adverse Event (SAE) During the Treatment Period (Maximum 96 Weeks)304 Participants
Primary

Percentage of Subjects Prematurely Discontinuing Due to a Treatment-emergent Adverse Event (TEAE) During the Treatment Period (Maximum 96 Weeks)

A TEAE is any untoward medical occurrence in a patient or clinical investigation subject administered a pharmaceutical product, which does not necessarily have a causal relationship with this treatment.

Time frame: During the treatment period (through Week 96)

Population: Safety Set (SS) which consisted of all subjects who had received at least 1 partial dose of study medication during SL0012. A partial dose of study medication was defined as any infusion during which the subject received \>0mL of study medication.

ArmMeasureValue (NUMBER)
Enrollment Cohort 1 Epratuzumab 600 mg Per Week (ES)Percentage of Subjects Prematurely Discontinuing Due to a Treatment-emergent Adverse Event (TEAE) During the Treatment Period (Maximum 96 Weeks)10.7 percentage of participants
Enrollment Cohort 2 Epratuzumab 1200 mg Q2W (ES)Percentage of Subjects Prematurely Discontinuing Due to a Treatment-emergent Adverse Event (TEAE) During the Treatment Period (Maximum 96 Weeks)9.1 percentage of participants
Enrollment Cohort 2 Epratuzumab 600 mg Per Week (ES)Percentage of Subjects Prematurely Discontinuing Due to a Treatment-emergent Adverse Event (TEAE) During the Treatment Period (Maximum 96 Weeks)4.9 percentage of participants
All Epratuzumab 600 mg Per WeekPercentage of Subjects Prematurely Discontinuing Due to a Treatment-emergent Adverse Event (TEAE) During the Treatment Period (Maximum 96 Weeks)6.8 percentage of participants
All SubjectsPercentage of Subjects Prematurely Discontinuing Due to a Treatment-emergent Adverse Event (TEAE) During the Treatment Period (Maximum 96 Weeks)7.7 percentage of participants
Primary

Percentage of Subjects Reporting at Least 1 Serious Adverse Event (SAE) During the Treatment Period (Maximum 96 Weeks)

A SAE is a treatment-emergent adverse event (TEAE) that the investigator classifies as serious. This includes: * Death * Life-threatening * Significant or persistent disability/incapacity * Congenital anomaly/birth defect (including that occurring in a fetus) * Important medical event that, based upon appropriate medical judgment, may jeopardize the patient or subject and may require medical or surgical intervention to prevent 1 of the other outcomes listed in the definition of serious * Initial inpatient hospitalization or prolongation of hospitalization

Time frame: During the treatment period (through Week 96)

Population: Safety Set (SS) which consisted of all subjects who had received at least 1 partial dose of study medication during SL0012. A partial dose of study medication was defined as any infusion during which the subject received \>0mL of study medication.

ArmMeasureValue (NUMBER)
Enrollment Cohort 1 Epratuzumab 600 mg Per Week (ES)Percentage of Subjects Reporting at Least 1 Serious Adverse Event (SAE) During the Treatment Period (Maximum 96 Weeks)33.2 percentage of participants
Enrollment Cohort 2 Epratuzumab 1200 mg Q2W (ES)Percentage of Subjects Reporting at Least 1 Serious Adverse Event (SAE) During the Treatment Period (Maximum 96 Weeks)23.9 percentage of participants
Enrollment Cohort 2 Epratuzumab 600 mg Per Week (ES)Percentage of Subjects Reporting at Least 1 Serious Adverse Event (SAE) During the Treatment Period (Maximum 96 Weeks)20.5 percentage of participants
All Epratuzumab 600 mg Per WeekPercentage of Subjects Reporting at Least 1 Serious Adverse Event (SAE) During the Treatment Period (Maximum 96 Weeks)24.6 percentage of participants
All SubjectsPercentage of Subjects Reporting at Least 1 Serious Adverse Event (SAE) During the Treatment Period (Maximum 96 Weeks)24.4 percentage of participants
Secondary

Number of Subjects Meeting Treatment Response Criteria According to a Combined Response Index

Combined response index is a response variable (yes/no) incorporating the following criteria for achievement of responder status (ie, all criteria must be met to achieve responder status): (1) British Isles Lupus Activity Group (BILAG) improvement, (2) No worsening in Systemic Lupus Erythematosus Activity Index (SLEDAI), (3) No worsening in Physician's Global Assessment of Disease, and (4) No disallowed changes in concomitant medications, with disallowed changes including mainly increases in corticosteroids, immunosuppressants, and antimalarials.

Time frame: At Week 48

Population: The Full Analysis Subset 1 (FASS1) consisted of all subjects in the FAS who were enrolled in study SL0008 (NCT00660881), SL0009 (NCT01262365) or SL0010 (NCT01261793) prior to enrollment in SL0012.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Enrollment Cohort 1 Epratuzumab 600 mg Per Week (ES)Number of Subjects Meeting Treatment Response Criteria According to a Combined Response Index82 Participants
Enrollment Cohort 2 Epratuzumab 1200 mg Q2W (ES)Number of Subjects Meeting Treatment Response Criteria According to a Combined Response Index146 Participants
Enrollment Cohort 2 Epratuzumab 600 mg Per Week (ES)Number of Subjects Meeting Treatment Response Criteria According to a Combined Response Index134 Participants
All Epratuzumab 600 mg Per WeekNumber of Subjects Meeting Treatment Response Criteria According to a Combined Response Index216 Participants
All SubjectsNumber of Subjects Meeting Treatment Response Criteria According to a Combined Response Index362 Participants
Secondary

Number of Subjects Meeting Treatment Response Criteria According to a Combined Response Index

Combined response index is a response variable (yes/no) incorporating the following criteria for achievement of responder status (ie, all criteria must be met to achieve responder status): (1) British Isles Lupus Activity Group (BILAG) improvement, (2) No worsening in Systemic Lupus Erythematosus Activity Index (SLEDAI), (3) No worsening in Physician's Global Assessment of Disease, and (4) No disallowed changes in concomitant medications, with disallowed changes including mainly increases in corticosteroids, immunosuppressants, and antimalarials.

Time frame: Week 96

Population: The Full Analysis Subset 1 (FASS1) consisted of all subjects in the FAS who were enrolled in study SL0008 (NCT00660881), SL0009 (NCT01262365) or SL0010 (NCT01261793) prior to enrollment in SL0012, and with available results at the Week 96 time-point.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Enrollment Cohort 1 Epratuzumab 600 mg Per Week (ES)Number of Subjects Meeting Treatment Response Criteria According to a Combined Response Index74 Participants
Enrollment Cohort 2 Epratuzumab 1200 mg Q2W (ES)Number of Subjects Meeting Treatment Response Criteria According to a Combined Response Index66 Participants
Enrollment Cohort 2 Epratuzumab 600 mg Per Week (ES)Number of Subjects Meeting Treatment Response Criteria According to a Combined Response Index78 Participants
All Epratuzumab 600 mg Per WeekNumber of Subjects Meeting Treatment Response Criteria According to a Combined Response Index152 Participants
All SubjectsNumber of Subjects Meeting Treatment Response Criteria According to a Combined Response Index218 Participants
Secondary

Percentage of Subjects Meeting Treatment Response Criteria According to a Combined Response Index

Combined response index is a response variable (yes/no) incorporating the following criteria for achievement of responder status (ie, all criteria must be met to achieve responder status): (1) British Isles Lupus Activity Group (BILAG) improvement, (2) No worsening in Systemic Lupus Erythematosus Activity Index (SLEDAI), (3) No worsening in Physician's Global Assessment of Disease, and (4) No disallowed changes in concomitant medications, with disallowed changes including mainly increases in corticosteroids, immunosuppressants, and antimalarials.

Time frame: Week 48

Population: The Full Analysis Subset 1 (FASS1) consisted of all subjects in the FAS who were enrolled in study SL0008 (NCT00660881), SL0009 (NCT01262365) or SL0010 (NCT01261793) prior to enrollment in SL0012.

ArmMeasureValue (NUMBER)
Enrollment Cohort 1 Epratuzumab 600 mg Per Week (ES)Percentage of Subjects Meeting Treatment Response Criteria According to a Combined Response Index35.7 percentage of participants
Enrollment Cohort 2 Epratuzumab 1200 mg Q2W (ES)Percentage of Subjects Meeting Treatment Response Criteria According to a Combined Response Index29.9 percentage of participants
Enrollment Cohort 2 Epratuzumab 600 mg Per Week (ES)Percentage of Subjects Meeting Treatment Response Criteria According to a Combined Response Index27.1 percentage of participants
All Epratuzumab 600 mg Per WeekPercentage of Subjects Meeting Treatment Response Criteria According to a Combined Response Index29.8 percentage of participants
All SubjectsPercentage of Subjects Meeting Treatment Response Criteria According to a Combined Response Index29.9 percentage of participants
Secondary

The Percent of Subjects Meeting Treatment Response Criteria According to a Combined Response Index

Combined response index is a response variable (yes/no) incorporating the following criteria for achievement of responder status (ie, all criteria must be met to achieve responder status): (1) British Isles Lupus Activity Group (BILAG) improvement, (2) No worsening in Systemic Lupus Erythematosus Activity Index (SLEDAI), (3) No worsening in Physician's Global Assessment of Disease, and (4) No disallowed changes in concomitant medications, with disallowed changes including mainly increases in corticosteroids, immunosuppressants, and antimalarials.

Time frame: Week 96

Population: The Full Analysis Subset 1 (FASS1) consisted of all subjects in the FAS who were enrolled in study SL0008 (NCT00660881), SL0009 (NCT01262365) or SL0010 (NCT01261793) prior to enrollment in SL0012, and with available results at the Week 96 time-point.

ArmMeasureValue (NUMBER)
Enrollment Cohort 1 Epratuzumab 600 mg Per Week (ES)The Percent of Subjects Meeting Treatment Response Criteria According to a Combined Response Index39.8 percentage of participants
Enrollment Cohort 2 Epratuzumab 1200 mg Q2W (ES)The Percent of Subjects Meeting Treatment Response Criteria According to a Combined Response Index21.6 percentage of participants
Enrollment Cohort 2 Epratuzumab 600 mg Per Week (ES)The Percent of Subjects Meeting Treatment Response Criteria According to a Combined Response Index26.2 percentage of participants
All Epratuzumab 600 mg Per WeekThe Percent of Subjects Meeting Treatment Response Criteria According to a Combined Response Index31.4 percentage of participants
All SubjectsThe Percent of Subjects Meeting Treatment Response Criteria According to a Combined Response Index27.6 percentage of participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026