Reuters - The first new treatment for lupus in a half-century won U.S. approval on Wednesday, a milestone for patients with the disabling disease and a potential blockbuster for tiny biotech company Human Genome Sciences Inc.<p><strong>Read more:</strong> <a class="rssreadon" rel="external" title="U.S. clears new lupus drug, blockbuster sales seen   (Reuters)" href="http://us.rd.yahoo.com/dailynews/rss/topstories/*http%3A//news.yahoo.com/s/nm/20110309/ts_nm/us_humangenome_lupus" target="_blank">http://us.rd.yahoo.com/dailynews/rss/topstories/*http%3A//news.yahoo.com/s/nm/20110309/ts_nm/us_humangenome_lupus</a></p>