Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 629,717	$ 456,649
Accounts receivable, including related party amounts of $39 and $88 as of September 30, 2019 and December 31, 2018, respectively	39	88
Prepaid expenses and other current assets, including related party amounts of $28,875 and $3,417 as of September 30, 2019 and December 31, 2018, respectively	34,309	9,658
Total current assets	664,065	466,395
Property and equipment, net	21,074	18,500
Intangible assets, net	249	289
Restricted cash	3,915	3,163
Operating lease assets	30,619
Other non-current assets	668	669
Total assets	720,590	489,016
Current liabilities:
Accounts payable	3,374	5,069
Accrued expenses, including related party amounts of $4,537 and $1,700 as of September 30, 2019 and December 31, 2018, respectively	22,397	20,852
Deferred revenue current, including related party amounts of $47,725 and $102 as of September 30, 2019 and December 31, 2018, respectively	47,725	102
Accrued tax liabilities	1,478	402
Deferred rent		1,202
Operating lease liabilities	4,805
Other current liabilities		119
Total current liabilities	79,779	27,746
Deferred revenue non-current, including related party amounts of $11,871 and $57,780 as of September 30, 2019 and December 31, 2018, respectively	11,871	57,780
Deferred rent non-current		11,052
Operating lease liabilities, net of current portion	36,827
Other non-current liabilities	235	243
Total liabilities	128,712	96,821
Commitments and contingencies, see Note 4
Shareholders’ equity:
Common shares, CHF 0.03 par value, 55,677,088 and 52,183,139 shares authorized at September 30, 2019 and December 31, 2018, respectively, 55,446,359 and 52,160,798 shares issued at September 30, 2019 and December 31, 2018, respectively, 55,189,370 and 51,852,862 shares outstanding at September 30, 2019 and December 31, 2018, respectively, 23,948,128 and 20,498,996 shares in conditional capital at September 30, 2019 and December 31, 2018, respectively.	1,684	1,584
Treasury shares, at cost, 256,989 and 307,936 shares at September 30, 2019 and December 31, 2018, respectively	(57)	(57)
Additional paid-in capital	845,526	682,245
Accumulated deficit	(255,253)	(291,569)
Accumulated other comprehensive loss	(22)	(8)
Total shareholders' equity	591,878	392,195
Total liabilities and shareholders’ equity	$ 720,590	$ 489,016