Biogen Announces Positive Phase 2 Study Results for Cutaneous Lupus Erythematosus (CLE) and Systemic Lupus Erythematosus (SLE)

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CAMBRIDGE, Mass., Dec. 03, 2019 (GLOBE NEWSWIRE) -- Today,  (Nasdaq: BIIB) announced positive top-line results from the Phase 2 LILAC study evaluating the efficacy and safety of BIIB059, a fully humanized IgG1 monoclonal antibody (mAb) targeting blood dendritic cell antigen 2 (BDCA2) expressed on plasmacytoid dendritic cells, in patients with lupus.

“There is substantial unmet medical need for people with lupus given the limited number of treatment options available to help manage this difficult-to-treat and chronic disease,” said Nathalie Franchimont, M.D., Ph.D., Vice President, Lupus and Multiple Sclerosis Portfolio at Biogen. “We are excited by the LILAC study results, and the potential for BIIB059 to be a meaningful new treatment option for patients living with lupus. We also believe these results support Biogen’s goal of continuing to build a multi-franchise portfolio by bringing potential new treatment options to people with great unmet medical need.”

LILAC was a two-part study that evaluated BIIB059 versus placebo in individuals with active cutaneous lupus erythematosus (CLE), including chronic and subacute subtypes, with or without systemic manifestations and in individuals with systemic lupus erythematosus (SLE) with active joint and skin manifestations.

The CLE part of the study met its primary endpoint (p<0.001) by demonstrating a dose response of BIIB059 on the percent change from baseline in the Cutaneous Lupus Erythematosus Disease Area and Severity Index Activity (CLASI-A) score at Week 16 in individuals with CLE. Study participants with CLE treated with 50 mg, 150 mg and 450 mg of BIIB059 experienced reductions in CLASI-A scores of 40.9 percent (p=0.008), 48.0 percent (p=0.001) and 42.5 percent (p=0.001), respectively, versus 14.5 percent with placebo. CLASI-A is a well-defined and reliable outcome measure that has been shown to detect meaningful change in CLE skin disease activity.

The SLE part of the study also met its primary endpoint of reducing disease activity in individuals with SLE as measured by change from baseline in total active joint count at Week 24 (treatment difference = -3.4 for BIIB059 450 mg versus placebo, p=0.037). Total active joint count is the total number of tender or swollen joints, with joint involvement being a common symptom in people with SLE. In addition, improvements in skin disease and overall disease activity were consistently observed across multiple secondary endpoints.

The safety and tolerability profile of BIIB059 supports its continued development. Detailed results of the LILAC study will be made available in a future scientific forum.

SLE is a chronic autoimmune disease that affects multiple organ systems, with periods of illness or flares alternating with periods of remission. SLE can present itself in several ways including rash, arthritis, anemia, thrombocytopenia, serositis, nephritis, seizures or psychosis. SLE is associated with a greater risk of death from causes such as infection and cardiovascular disease.

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These statements involve risks and uncertainties that could cause actual results to differ materially from those reflected in such statements, including without limitation risks relating to uncertainty of success in the development and potential commercialization of BIIB059; the occurrence of adverse safety events and/or unexpected concerns that may arise from additional data or analysis; failure to obtain regulatory approvals; risks of unexpected hurdles, costs or delays; failure to protect and enforce our data, intellectual property and other proprietary rights and uncertainties relating to intellectual property claims and challenges; regulatory authorities may require additional information or further studies or may fail or refuse to approve or may delay approval of our drug candidates, including BIIB059; product liability claims; and third party collaboration risks. The foregoing sets forth many, but not all, of the factors that could cause actual results to differ from our expectations in any forward-looking statement. Investors should consider this cautionary statement, as well as the risk factors identified in our most recent annual or quarterly report and in other reports we have filed with the U.S. Securities and Exchange Commission. These statements are based on our current beliefs and expectations and speak only as of the date of this news release. We do not undertake any obligation to publicly update any forward-looking statements, whether as a result of new information, future developments or otherwise.

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Globe Newswire: 12:30 GMT Tuesday 3rd December 2019

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