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Condensed Consolidated Statements Of Cash Flows - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Cash flows from operating activities:        
Net loss $ (20,257,000) $ (9,562,000) $ (57,112,000) $ (18,213,000)
Adjustments to reconcile net loss to net cash used in operating activities:        
Stock-based compensation     1,450,000 1,237,000
Depreciation 181,000 121,000 533,000 131,000
Amortization of intangible assets 119,000 90,000 379,000 90,000
Changes in operating assets and liabilities:        
Prepaid and other assets     2,790,000 (10,102,000)
Operating lease right-of-use assets and liabilities     (6,000) 30,000
Accounts payable     (3,592,000) 1,434,000
Accrued development expense     1,293,000 2,532,000
Accrued compensation and benefits     (1,717,000) 43,000
Other liabilities     (212,000) 609,000
Net cash used in operating activities     (56,194,000) (22,209,000)
Cash flows from investing activities:        
Purchases of property and equipment     (3,047,000) (22,114,000)
Net cash used in investing activities     (3,047,000) (22,114,000)
Cash flows from financing activities:        
Proceeds from issuance of common stock upon exercise of stock options     466,000 1,824,000
Proceeds from issuance of common stock upon exercise of common stock warrants 0 0 0 692,000
Proceeds from common stock offering, net of issuance costs     0 189,825,000
Net cash provided by financing activities     466,000 192,341,000
Net (decrease) increase in cash and cash equivalents     (58,775,000) 148,018,000
Cash and cash equivalents at beginning of period     233,437,000 93,506,000
Cash and cash equivalents at end of period $ 174,662,000 $ 241,524,000 $ 174,662,000 $ 241,524,000