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CONDENSED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Current assets:    
Cash and cash equivalents $ 20,294 $ 13,644
Restricted cash 270 270
Marketable securities 111,822 125,681
Interest and other receivables 701 802
Prepaid and other current assets 1,068 1,211
Total current assets 134,155 141,608
Noncurrent marketable securities 1,029 19,651
Property and equipment, net 749 408
Operating leases, right-of-use assets 5,827 2,497
Deposits and other assets 1,129 1,353
Total assets 142,889 165,517
Current liabilities:    
Accounts payable 3,376 1,181
Accrued compensation and benefits 2,674 4,830
Amount due to Janssen Biotech, Inc. 1 14,269
Operating lease liabilities 828 354
Accrued liabilities 10,037 7,528
Total current liabilities 16,916 28,162
Noncurrent operating lease liabilities 5,159 2,200
Commitments and contingencies
Stockholders' equity:    
Common stock 200 200
Additional paid-in capital 1,217,105 1,214,835
Accumulated deficit (1,096,367) (1,080,012)
Accumulated other comprehensive (loss) gain (124) 132
Total stockholders' equity 120,814 135,155
Total liabilities and stockholders' equity $ 142,889 $ 165,517