By Chelsea Stevenson

Human Genome Sciences Inc. (HGSI) said the U.S. Food and Drug Administration set a Dec. 15 action date for its resubmitted biologics license application for the anthrax treatment raxibacumab.

The biotechnology company said the FDA deemed its resubmission a complete response to the agency's November 2009 request for further analyses of existing data as well as additional information.

The company said the resubmission included additional examinations of abnormal or diseased tissue in animal studies, additional evaluation of the benefits from the combined use of raxibacumab with antibiotics rather than antibiotics alone, and more validation of previous data.

Raxibacumab is a human monoclonal antibody which targets anthrax toxins after they are released by bacteria into blood and tissues. Unlike antibiotics, raxibacumab doesn't kill the anthrax bacteria.

Human Genome in April reported its first-quarter loss narrowed as revenue grew 77% and research and developments costs eased.

In May, the company adopted a shareholder rights plan with a 15% trigger in the wake of GlaxoSmithKline PLC's (GSK, GSK.LN) $2.6 billion hostile takeover bid as it continued to suggest its shareholders reject the offer.

Shares closed Monday at $13.67 and were inactive premarket. The stock has soared 85% since the start of the year.

Write to Chelsea Stevenson at chelsea.stevenson@dowjones.com

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