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Summary of significant accounting policies (Tables) | 12 Months Ended
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Dec. 31, 2022
Summary of significant accounting policies |
Summary of useful lives of property and equipment | ​
​ | ​ | ​
Asset category |  | Estimated useful life
Computer equipment and software |  | 3 years
Furniture and fixtures |  | 7 years
Laboratory equipment and office furniture |  | 7 years
Leasehold improvements |  | Remainder of lease term
​
Schedule of potentially dilutive securities excluded from calculation of diluted net loss per share | The following table sets forth the potentially dilutive securities that have been excluded from the calculation of diluted net loss per share because to include them would be anti-dilutive (in common stock equivalent shares):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year ended December 31,
​ |  | 2022 |  | 2021 |  | 2020
Convertible preferred stock | ​ | 56,227 | ​ | — | ​ | ​
Options to purchase common stock |  | 480,274 |  | 229,308 |  | 188,552
Unvested restricted stock units | ​ | 12,734 | ​ | 19,985 | ​ | —
Total shares of common stock equivalents |  | 549,235 |  | 249,293 |  | 188,552
​

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- Definition Tabular disclosure of the useful life of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References No definition available. + Details
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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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