Study to Evaluate BIIB059 (Litifilimab) in Cutaneous Lupus Erythematosus (CLE) With or Without Systemic Lupus Erythematosus (SLE)

An active joint is defined as a joint with pain and signs of inflammation (e.g., tenderness, swelling or effusion). The 28 Joint Count includes assessment of swelling and tenderness in the shoulders, elbows, wrists, metacarpophalangeal joints, proximal interphalangeal joints and knees. The investigator counts how many of the 28 joints are swollen or tender at the given week.

The Cutaneous Lupus Erythematosus Disease Area and Severity Index (CLASI) is a clinical tool that quantifies disease activity and damage in cutaneous lupus erythematosus (CLE). The activity scale (CLASI-A) includes measurements of erythema, scale and hypertrophy, and mucous membrane disease. Each part of the body is listed separately, from the scalp to the feet, in addition to sections focusing on mucous membrane involvement and alopecia. Points are given for the presence of erythema, scale, mucous membrane lesions, recent hair loss, and inflammatory alopecia. Composite scores are calculated by summing the individual component scores. CLASI-A scores of 0-9, 10-20, and 21-70 represent disease severity of mild, moderate, and severe, respectively. Higher scores indicate more disease activity.

CLASI-50 Response is defined as a 50% improvement from baseline in CLASI-A score at Week 24. The CLASI is a clinical tool that quantifies disease activity and damage in CLE. The activity scale (CLASI-A) includes measurements of erythema, scale and hypertrophy, and mucous membrane disease. Each part of the body is listed separately, from the scalp to the feet, in addition to sections focusing on mucous membrane involvement and alopecia. Points are given for the presence of erythema, scale, mucous membrane lesions, recent hair loss, and inflammatory alopecia. Composite scores are calculated by summing the individual component scores. CLASI-A scores of 0-9, 10-20, and 21-70 represent disease severity of mild, moderate, and severe, respectively. Higher scores indicate more disease activity.

CLASI-50 Response is defined as a 50% improvement from baseline in CLASI-A score at Weeks 12 and 16. The CLASI is a clinical tool that quantifies disease activity and damage in CLE. The activity scale (CLASI-A) includes measurements of erythema, scale and hypertrophy, and mucous membrane disease. Each part of the body is listed separately, from the scalp to the feet, in addition to sections focusing on mucous membrane involvement and alopecia. Points are given for the presence of erythema, scale, mucous membrane lesions, recent hair loss, and inflammatory alopecia. Composite scores are calculated by summing the individual component scores. CLASI-A scores of 0-9, 10-20, and 21-70 represent disease severity of mild, moderate, and severe, respectively. Higher scores indicate more disease activity.

The CLASI is a clinical tool that quantifies disease activity and damage in CLE. The activity scale (CLASI-A) includes measurements of erythema, scale and hypertrophy, and mucous membrane disease. Each part of the body is listed separately, from the scalp to the feet, in addition to sections focusing on mucous membrane involvement and alopecia. Points are given for the presence of erythema, scale, mucous membrane lesions, recent hair loss, and inflammatory alopecia. Composite scores are calculated by summing the individual component scores. CLASI-A scores of 0-9, 10-20, and 21-70 represent disease severity of mild, moderate, and severe, respectively. Higher scores indicate more disease activity.

The CLASI is a clinical tool that quantifies disease activity and damage in CLE. The activity scale (CLASI-A) includes measurements of erythema, scale and hypertrophy, and mucous membrane disease. Each part of the body is listed separately, from the scalp to the feet, in addition to sections focusing on mucous membrane involvement and alopecia. Points are given for the presence of erythema, scale, mucous membrane lesions, recent hair loss, and inflammatory alopecia. Composite scores are calculated by summing the individual component scores. CLASI-A scores of 0-9, 10-20, and 21-70 represent disease severity of mild, moderate, and severe, respectively. Higher scores indicate more disease activity.

The CLASI is a clinical tool that quantifies disease activity and damage in CLE. The activity scale (CLASI-A) includes measurements of erythema, scale and hypertrophy, and mucous membrane disease. Each part of the body is listed separately, from the scalp to the feet, in addition to sections focusing on mucous membrane involvement and alopecia. Points are given for the presence of erythema, scale, mucous membrane lesions, recent hair loss, and inflammatory alopecia. Composite scores are calculated by summing the individual component scores. CLASI-A scores of 0-9, 10-20, and 21-70 represent disease severity of mild, moderate, and severe, respectively. Higher scores indicate more disease activity. The percentage of participants with a >=4-point reduction from baseline in CLASI-A score are reported here.

The CLASI is a clinical tool that quantifies disease activity and damage in CLE. The activity scale (CLASI-A) includes measurements of erythema, scale and hypertrophy, and mucous membrane disease. Each part of the body is listed separately, from the scalp to the feet, in addition to sections focusing on mucous membrane involvement and alopecia. Points are given for the presence of erythema, scale, mucous membrane lesions, recent hair loss, and inflammatory alopecia. Composite scores are calculated by summing the individual component scores. CLASI-A scores of 0-9, 10-20, and 21-70 represent disease severity of mild, moderate, and severe, respectively. Higher scores indicate more disease activity. The percentage of participants with a >=4-point reduction from baseline in CLASI-A score are reported here.

The CLASI is a clinical tool that quantifies disease activity and damage in CLE. The activity scale (CLASI-A) includes measurements of erythema, scale and hypertrophy, and mucous membrane disease. Each part of the body is listed separately, from the scalp to the feet, in addition to sections focusing on mucous membrane involvement and alopecia. Points are given for the presence of erythema, scale, mucous membrane lesions, recent hair loss, and inflammatory alopecia. Composite scores are calculated by summing the individual component scores. CLASI-A scores of 0-9, 10-20, and 21-70 represent disease severity of mild, moderate, and severe, respectively. Higher scores indicate more disease activity. The percentage of participants with a >=7-point reduction from baseline in CLASI-A score are reported here.

The CLASI is a clinical tool that quantifies disease activity and damage in CLE. The activity scale (CLASI-A) includes measurements of erythema, scale and hypertrophy, and mucous membrane disease. Each part of the body is listed separately, from the scalp to the feet, in addition to sections focusing on mucous membrane involvement and alopecia. Points are given for the presence of erythema, scale, mucous membrane lesions, recent hair loss, and inflammatory alopecia. Composite scores are calculated by summing the individual component scores. CLASI-A scores of 0-9, 10-20, and 21-70 represent disease severity of mild, moderate, and severe, respectively. Higher scores indicate more disease activity. The percentage of participants with a >=7-point reduction from baseline in CLASI-A score are reported here.

An SRI-4 at Week 24 was a categorical response variable (Yes/No) incorporating the following criteria for achievement of responder status (i.e., all criteria must have been met to achieve responder status): A reduction from baseline of ≥4 points in SLEDAI-2K, No new organ system affected, as defined by no new BILAG-2004 Grade A and no more than 1 new BILAG-2004 Grade B, No worsening from baseline in participant's lupus disease activity, defined by a <1-point increase in the PGA (VAS) [on a scale of 0 to 10],No changes to protocol-specified medication rules,as follows (all criteria were required to be met): No initiation or increase of SLE standard of care therapy or other disallowed concomitant therapy; Concomitant corticosteroid dosage at Week 24 to be ≤10 mg/day;Concomitant corticosteroid dosage at Week 24 was no more than at Day 1;No increase in corticosteroid dose between Weeks 17 and 24. The percentage of participants who had responded to each of the 4 criteria was also reported.

The SLEDAI-2K is a reliable, valid, simple, 1-page activity index that measures disease activity and records features of active lupus as present or not. It uses a weighted checklist to assign a numeric score based on the presence or absence of 24 symptoms at the time of assessment or during the previous 28 days. Each symptom present is assigned between 1 and up to 8 points based on its usual clinical importance, yielding a total score that ranges from 0 points (no symptoms) to 105 points (presence of all defined symptoms), where higher scores representing increased disease activity.

No new organ system affected, as defined by no new British Isles Lupus Activity Group (BILAG)-2004 A and no more than one new BILAG-2004 B. The BILAG-2004 index categorizes disease activity in each organ system into five different levels from A to E. Grade A represents very active disease, Grade B represents moderate disease activity, Grade C indicates mild stable disease, and grade D implies no disease activity, but suggests the organ system had previously been affected. Grade E indicates no current or previous disease activity. A score is applied to each grade of each organ system using coding scheme of A=12, B=8, C=1, and D/E=0 and is summarized as a total score ranging 0-108. Higher scores indicate more severe disease activity.

The PGA is used to quantify disease activity and is measured using an anchored VAS. The PGA asks the Investigator to assess the participants current disease activity from a score of 0 (none) to 3 (severe), where higher score means severe SLE disease activity.

An AE is any untoward medical occurrence in a participant or clinical investigation participant administered a pharmaceutical product and that does not necessarily have a causal relationship with this treatment. An SAE is any untoward medical occurrence that at any dose: Results in death; in the view of the Investigator, places the participant at immediate risk of death (a life-threatening event); however, this does not include an event that, had it occurred in a more severe form, might have caused death; requires inpatient hospitalization or prolongation of existing hospitalization; results in persistent or significant disability/incapacity; results in a congenital anomaly/birth defect.

An AE is any untoward medical occurrence in a participant or clinical investigation participant administered a pharmaceutical product and that does not necessarily have a causal relationship with this treatment. An SAE is any untoward medical occurrence that at any dose: Results in death; in the view of the Investigator, places the participant at immediate risk of death (a life-threatening event); however, this does not include an event that, had it occurred in a more severe form, might have caused death; requires inpatient hospitalization or prolongation of existing hospitalization; results in persistent or significant disability/incapacity; results in a congenital anomaly/birth defect.

Vaccine-related immunoglobulin (Ig) titers for Pneumococcus (S. pneumoniae) were analyzed, including 23 types of serotypes (sero). AB = Antibody.

Vaccine-related immunoglobulin (Ig) titers for Pneumococcus (S. pneumoniae) were analyzed, including 23 types of serotypes (sero). AB = Antibody.

Vaccine-related immunoglobulin titers for tetanus and diphtheria were analyzed using international units per milliliter (IU/mL).

Vaccine-related immunoglobulin titers for tetanus and diphtheria were analyzed.

Vaccine-related immunoglobulin (Ig) titers for Pneumococcus (S. pneumoniae) including 23 types of serotypes (sero), tetanus and diphtheria were analyzed. AB = Antibody

Vaccine-related immunoglobulin (Ig) titers for Pneumococcus (S. pneumoniae) including 23 types of serotypes (sero), tetanus and diphtheria were analyzed. AB = Antibody.