CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash	$ 5,927,565	$ 7,851,243
Prepaid expenses and deposits	177,511	70,149
Total current assets	6,105,076	7,921,392
Total assets	6,105,076	7,921,392
Current liabilities:
Accounts payable and accrued liabilities	1,449,192	1,224,940
Research agreement obligations	492,365	492,365
Warrant liability	17,500	14,500
Promissory note	5,000	5,000
Total current liabilities	1,964,057	1,736,805
Total liabilities	1,964,057	1,736,805
COMMITMENTS AND CONTINGENCIES
Stockholders' equity:
Common stock, $0.001 par value, 41,666,667 shares authorized, 8,470,833 and 8,421,185 shares issued and outstanding as of March 31, 2017 and December 31, 2016, respectively	8,471	8,421
Additional paid-in capital	152,368,241	151,991,974
Accumulated deficit	(148,235,693)	(145,815,808)
Total stockholders' equity	4,141,019	6,184,587
Total liabilities and stockholders' equity	6,105,076	7,921,392
Series A Preferred Stock [Member]
Stockholders' equity:
Convertible preferred stock, $0.001 par value — 5,000,000 shares authorized:	0	0
Series B Preferred Stock [Member]
Stockholders' equity:
Convertible preferred stock, $0.001 par value — 5,000,000 shares authorized:	$ 0	$ 0

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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Balance Type:	credit
Period Type:	instant

- Definition

Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.