| Cash and cash equivalents | 15.16M |
| Marketable securities | |
| Prepaid expenses and other current assets | 1.02M |
| Total current assets | 29.53M |
| Property and equipment, net | 159K |
| Restricted cash and other assets | 0 |
| Total assets | 29.69M |
| Accounts payable | 699K |
| Accrued clinical and development expenses | |
| Accrued liabilities | 1.11M |
| Total current liabilities | 3.72M |
| Warrant liability | |
| Deferred rent | 63K |
| Total liabilities | 6.77M |
| Commitments and contingencies (Note 6) | 0 |
| Preferred stock, $0.001 par value, 2,000,000 shares authorized; no shares issued and outstanding | 0 |
| Common stock, $0.001 par value, shares authorized: 150,000,000 shares; issued and outstanding: 48,805,008 shares at June 30, 2011 and 33,702,242 shares at December 31, 2010 | 72K |
| Additional paid-in capital | 372.7M |
| Accumulated other comprehensive gain (loss) | 2K |
| Deficit accumulated during the development stage | -349.85M |
| Total stockholders' equity | 22.92M |
| Total liabilities and stockholders' equity | 29.69M |