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Quarterly Financial Information (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2021
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Information (Unaudited) | The following table summarizes the unaudited statements of operations for each quarter of 2021 and 2020 (in thousands, except per share amounts):
|  | March 31 |  |  | June 30 |  |  | September 30 |  |  | December 31 |
2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Research and development |  |  | 5,642 |  |  |  | 9,227 |  |  |  | 4,591 |  |  |  | 4,506 |
General and administrative |  |  | 2,342 |  |  |  | 2,075 |  |  |  | 2,102 |  |  |  | 2,609 |
Total operating expenses |  |  | 7,984 |  |  |  | 11,302 |  |  |  | 6,693 |  |  |  | 7,115 |
Other income (expense) |  |  | (15 | ) |  |  | (9 | ) |  |  | 2 |  |  |  | (36 | )
Net loss |  |  | (7,999 | ) |  |  | (11,311 | ) |  |  | (6,691 | ) |  |  | (7,151 | )
Basic and diluted net loss per share |  | $ | (1.30 | ) |  | $ | (1.53 | ) |  | $ | (0.71 | ) |  | $ | (0.76 | )
2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Research and development |  |  | 1,541 |  |  |  | 1,103 |  |  |  | 1,891 |  |  |  | 2,347 |
General and administrative |  |  | 1,816 |  |  |  | 1,815 |  |  |  | 1,863 |  |  |  | 2,374 |
Total operating expenses |  |  | 3,357 |  |  |  | 2,918 |  |  |  | 3,754 |  |  |  | 4,721 |
Other income |  |  | 37 |  |  |  | (4 | ) |  |  | (10 | ) |  |  | (3 | )
Net loss |  |  | (3,320 | ) |  |  | (2,922 | ) |  |  | (3,764 | ) |  |  | (4,724 | )
Basic and diluted net loss per share |  | $ | (2.15 | ) |  | $ | (1.68 | ) |  | $ | (1.14 | ) |  | $ | (1.11 | )

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124502072&loc=d3e1280-108306 + Details
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