( -LymphoStat-B(R) significantly reduced ...)Human Genome Sciences Reports That a Phase 2 Study of LymphoStat-B,Showed Significant Reductions in Disease Activity in Patients with,Active Systemic Lupus Erythematosus,Health

ROCKVILLE, Md., June 14, 2007 /PRNewswire-FirstCall/ -- Human Genome Sciences, Inc. today announced the presentation of Phase 2 trial data demonstrating that LymphoStat-B(R) (belimumab) significantly reduced disease activity across multiple clinical measures, was well tolerated and improved quality of life in patients with active systemic lupus erythematosus (SLE). The 52-week and 76-week results of the Phase 2 study were the subject of an oral presentation today in Barcelona at the annual congress of the European League Against Rheumatism (EULAR).

"A number of clinical measures used in the Phase 2 study demonstrate that LymphoStat-B produced significant improvements in disease activity in patients with serologically active SLE," said Ellen Ginzler, M.D., Professor of Medicine and Chief of Rheumatology at the Downstate Medical Center, State University of New York (SUNY) in Brooklyn. "At Week 52, we saw significant reductions in SLE disease activity as measured by the SELENA SLEDAI and BILAG indices and the Physician's Global Assessment, as well as the patient response rate chosen as the primary efficacy endpoint of the Phase 3 trials. Continued improvements were observed from Week 52 through Week 76 in the 24-week extension phase of the trial."

Dr. Ginzler noted that reductions observed in activated B cells and anti- dsDNA autoantibodies, as well as the improvements observed in health-related quality of life, were associated with therapeutic response. No increase in infections or infectious events was observed over time. "We look forward to continuing the evaluation of LymphoStat-B as a potential treatment for SLE in the Phase 3 trials that are now underway," she said.

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