CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities
Net loss	$ (21,201)	$ (9,906)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	346	154
Depreciation and amortization	26	3
Non-cash lease expense	26
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(905)	49
Accounts payable and accrued expenses	3,731	(137)
Accrued compensation and benefits	(201)	124
Other assets	(161)
Other liabilities	86	3
Net cash used in operating activities	(18,253)	(9,710)
Cash flows from investing activities
Purchases of property and equipment	(50)	(3)
Net cash used in investing activities	(50)	(3)
Cash flows from financing activities
Payment of deferred offering costs	(931)
Proceeds from exercise of stock options	51
Proceeds from issuance of term loan, net of issuance costs		2,492
Net cash provided by financing activities	86,753	10,433
Net increase in cash, cash equivalents and restricted cash	68,450	720
Cash, cash equivalents, and restricted cash at beginning of period	3,924	4,112
Cash, cash equivalents, and restricted cash at end of period	72,374	4,832
Supplemental cash flow data:
Cash paid for interest	144
Supplemental disclosure of non-cash investing and financing activities:
Right-of-use assets recognized in exchange for lease liabilities	1,894
Deferred offering costs included in accounts payable and accrued expenses	1,416
Property and equipment included in accounts payable	14
Fair value of warrant issued in connection with term loan		37
Series A Redeemable Convertible Preferred Stock
Cash flows from financing activities
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs		$ 7,941
Series B Redeemable Convertible Preferred Stock
Cash flows from financing activities
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs	$ 87,633