NEW YORK/LONDON, July 16: GlaxoSmithKline is nearing a deal to acquire Human Genome Sciences for about 2.8 billion dollars in cash after pursuing the US biotech company for three months, two sources familiar with the situation said yesterday. The British pharmaceutical giant is expected to raise its offer to around $14 per share from 13 dollars previously, the sources said, declining to be identified because the information was confidential. A deal is expected to be announced before the US stock market opens today, they said. (agencies)