| Net loss | |
| Depreciation | 564K |
| Accretion of premium on available-for-sale securities | 124K |
| Amortization of leasehold incentive obligation | -165K |
| Stock-based compensation for non-employees | |
| Stock-based compensation for employees and non-employee directors | 3.35M |
| Other assets | |
| Accounts payable, accrued expenses and other current liabilities | -178K |
| Deferred revenue | -3.32M |
| Deferred rent | -414K |
| Net cash (used in) provided by operating activities | |
| Purchases of property and equipment | -106K |
| Purchases of available-for-sale securities | -7.94M |
| Maturities of available-for-sale securities | 13.9M |
| Net cash provided by (used in) investing activities | |
| Proceeds from issuance of common stock | 1.23M |
| Net cash provided by financing activities | |
| Net change in cash and cash equivalents | |
| Cash and cash equivalents at beginning of period | 4.82M |
| Cash and cash equivalents at end of period | 3.67M |
| Purchases of property and equipment included in accounts payable, accrued expenses and other current liabilities | 0 |