Anthera Pharmaceuticals Completes Interim B-Cell Analysis of PEARL-SC Study
Consistent with Previous Clinical Studies with Blisibimod (A-623)
HAYWARD, Calif., December 1, 2011 /PRNewswire/ Anthera
Pharmaceuticals, Inc. (Nasdaq: ANTH), a biopharmaceutical company developing drugs to treat serious diseases associated with inflammation, today announced positive interim biomarker data from the PEARL-SC phase 2b clinical study in patients with
systemic lupus erythematosus.
After analysis by an independent statistician, data from the on-going PEARL-SC study indicate that weekly and
monthly subcutaneous doses of blisibimod resulted in statistically significant reductions of B-cells. Elevations in these B-cells have been associated with an increased risk of disease activity in lupus patients. These findings are consistent with
data from previous clinical studies of blisibimod. The company remains blinded to primary efficacy data.
We believe reductions of
B-cells in the PEARL-SC study will correlate to a reduction in disease activity in patients treated with blisibimod, said Colin Hislop, MD, Chief Medical Officer and Senior Vice President of Anthera Pharmaceuticals. This analysis
demonstrates that the selected weekly and monthly blisibimod doses resulted in an appropriate biological response. If confirmed with positive clinical outcomes from the PEARL-SC study, these data will provide guidance for the design of our phase 3
clinical studies and allow us to differentiate blisibimod from other available BAFF inhibitors for the treatment of lupus.
results from the PEARL-SC clinical study are expected in the second quarter of 2012. A proposed amendment to PEARL-SC also includes an option for an interim efficacy analysis to be conducted by an independent statistician after the 350th enrolled
subject has reached 24 weeks in the study - the primary efficacy time point.
PEARL-SC (A randomized, double-blind Phase 2b study to evaluate the efficacy, safety, and tolerability of blisibimod administration in subjects with
systemic lupus erythematosus) is examining the therapeutic benefit of weekly and monthly subcutaneous injections of blisibimod in patients with active and antibody positive systemic lupus erythematosus (SLE). The clinical study enrolled five hundred
and forty-seven (547) patients in 11 countries and 72 clinical sites worldwide. The primary endpoint of the PEARL-SC study is clinical improvement at 24 weeks in a SLE responder index - a composite responder index evaluating various patient and
physician reported clinical disease activity including a SELENA/SLEDAI* improvement of five (5) points or greater, no increase in a physicians global assessment of more than 0.3 points, with no new BILAG A or two new BILAG B organ domain
*SELENA-SLEDAI Safety of Estrogen in Lupus Erythematosus National Assessment / Systemic Lupus Erythematosus Activity Index is
a cumulative, weighted index of systemic lupus erythematosus disease activity
About B-Cell Activating Factor (BAFF) and blisibimod
BAFF has been associated with a wide range of B-Cell mediated autoimmune diseases,
including systemic lupus erythematosus, lupus nephritis, rheumatoid arthritis, multiple sclerosis, Sjogrens Syndrome, Graves Disease and others. Multiple clinical studies with other
BAFF antagonists recently have reported on BAFFs potential positive role in treating lupus and rheumatoid arthritis. Anthera is advancing its development of blisibimod, a broad inhibitor of BAFF, to expand its potential clinical utility in
autoimmune diseases. Blisibimod is a novel fusion protein called a peptibody and is distinct from an antibody. Anthera owns worldwide rights to blisibimod in all potential indications.
About Anthera Pharmaceuticals
Anthera Pharmaceuticals is a biopharmaceutical company
focused on developing and commercializing products to treat serious diseases associated with inflammation, including cardiovascular and autoimmune diseases. Anthera has three late stage clinical products: varespladib methyl (A-002), A-001 and
blisibimod (A-623). Varespladib methyl (A-002) and A-001 are designed to inhibit a novel enzyme target known as secretory phospholipase A2 (sPLA2). Elevated levels of sPLA2 have been implicated in a variety of acute inflammatory conditions,
including acute coronary syndrome and acute chest syndrome, as well as chronic diseases such as stable coronary artery disease. Blisibimod targets elevated levels of B-lymphocyte stimulator (BAFF) which have been associated with a variety of B-Cell
mediated autoimmune diseases, including systemic lupus erythematosus (lupus) and rheumatoid arthritis.
Safe Harbor Statement
Any statements contained in this press release that refer to future events or other non-historical matters, including statements that
are preceded by, followed by, or that include such words as estimate, intend, anticipate, believe, plan, goal, expect, project, or similar statements,
are forward-looking statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are based on Antheras expectations as of the date of this press release and
are subject to certain risks and uncertainties that could cause actual results to differ materially as set forth in Antheras public filings with the SEC, including Antheras Annual Report on Form 10-K for the year ended December 31,
2010 and Quarterly Report on Form 10-Q for the quarter ended September 30, 2011. Anthera disclaims any intent or obligation to update any forward-looking statements, whether because of new information, future events or otherwise, except as
required by applicable law.
CONTACT: Bianca Nery of Anthera Pharmaceuticals, Inc., firstname.lastname@example.org or 510.856.5586.