CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 61,653	$ 27,349
Short-term marketable securities	186,409	164,065
Accounts receivable, net	597	623
Prepaid expenses and other current assets	7,914	12,995
Total current assets	256,573	205,032
Marketable securities		34,242
Property and equipment, net	1,145	1,335
Intangible assets	6,992	7,048
Other assets	2,922	3,554
Total assets	267,632	251,211
Current liabilities:
Accounts payable	7,667	9,985
Accrued expenses	9,154	10,051
Current portion of lease liabilities	766	693
Discontinued operations	2,202	2,202
Total current liabilities	19,789	22,931
Other liabilities	1,638	2,172
Contingent consideration	26,000	28,400
Deferred tax liability	367	367
Total liabilities	47,794	53,870
Commitments and contingencies (Note 16)
Stockholders' Equity:
Preferred stock, $0.00001 par value; 10,000,000 shares authorized and no shares issued or outstanding at September 30, 2022 and December 31, 2021
Common stock, $0.00001 par value; 100,000,000 shares authorized at September 30, 2022 and December 31, 2021; 66,679,641 and 61,228,446 shares issued and outstanding at September 30, 2022 and December 31, 2021, respectively	1	1
Additional paid-in capital	875,982	792,971
Accumulated other comprehensive loss	(1,465)	(224)
Accumulated deficit	(654,680)	(595,407)
Total stockholders' equity	219,838	197,341
Total liabilities and stockholders' equity	$ 267,632	$ 251,211