Consolidated Balance Sheets - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 5,630,569	$ 6,805,889
Other receivables	493,019	31,037
Prepaid expenses	437,958	403,097
Total current assets	6,561,546	7,240,023
Property and equipment, net	7,081	9,396
Other non-current assets	692,305	577,968
Total assets	7,260,932	7,827,387
Current liabilities
Accounts payable	632,118	459,705
Accrued expenses	1,341,811	631,351
Total current liabilities	1,973,929	1,091,056
Other liabilities	203,948	9,711
Total liabilities	2,177,877	1,100,767
Commitments and contingencies (Note 8)
Stockholders' equity
Preferred stock, $0.01 par value, 5,000,000 shares authorized; None issued and outstanding	0	0
Common stock, $0.0001 par value; 120,000,000 shares authorized; 16,683,411 and 11,422,161 shares issued and outstanding, respectively	1,668	1,143
Accumulated other comprehensive loss	(97,024)	(96,728)
Additional paid-in capital	41,942,062	35,791,972
Accumulated deficit	(36,763,651)	(28,969,767)
Total stockholders' equity	5,083,055	6,726,620
Total liabilities and stockholders' equity	$ 7,260,932	$ 7,827,387

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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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).