Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 106,501	$ 85,947
Short-term investments (note 3)	30,000	29
Research and development tax credits receivable	456	290
Prepaid expenses	3,517	1,398
Other receivables	497	387
Total current assets	140,971	88,051
Operating lease right-of-use assets (note 2)	593
Property and equipment	328	30
Total assets	141,892	88,081
Current liabilities
Accounts payable and accrued liabilities (note 4)	8,478	4,477
Current portion of operating lease liabilities (note 2)	358
Income taxes payable		56
Total current liabilities	8,836	4,533
Operating lease liabilities (note 2)	224
Total liabilities	9,060	4,533
Convertible Preferred Shares (note 1 and 5)
Convertible preferred shares		138,758
Shareholders’ Equity (Deficit) (note 1 and 5)
Common shares, no par value, unlimited shares authorized, 24,490,742 shares issued and outstanding as of September 30, 2019, 596,787 shares issued and outstanding as of December 31, 2018	226,211	2,039
Additional paid-in capital	3,466	2,655
Cumulative translation adjustment	(1,634)	(1,634)
Accumulated deficit	(95,211)	(58,270)
Total shareholders’ equity (deficit)	132,832	(55,210)
Total liabilities, convertible preferred shares and shareholders’ equity (deficit)	$ 141,892	88,081
Class A1 preferred shares
Convertible Preferred Shares (note 1 and 5)
Convertible preferred shares		2,027
Class A2 preferred shares
Convertible Preferred Shares (note 1 and 5)
Convertible preferred shares		12,643
Class B preferred shares
Convertible Preferred Shares (note 1 and 5)
Convertible preferred shares		17,198
Class C preferred shares
Convertible Preferred Shares (note 1 and 5)
Convertible preferred shares		27,236
Class D1 preferred shares
Convertible Preferred Shares (note 1 and 5)
Convertible preferred shares		64,719
Class D2 preferred shares
Convertible Preferred Shares (note 1 and 5)
Convertible preferred shares		$ 14,935