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v3.21.2

Commitments and contingencies (Details) | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
May 31, 2017 ft² item | Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) | Aug. 31, 2020 USD ($)
Future minimum lease payments |  |  |  |  |  |  |
Rent expenses |  | $ 100,000 | $ 100,000 | $ 100,000 | $ 200,000 |  |
Defined contribution |  | 30,000 | $ 16,000 | 69,000 | $ 32,000 |  |
Office and laboratory space |  |  |  |  |  |  |
Operating leases |  |  |  |  |  |  |
Lease term | 62 months |  |  |  |  |  |
Space of leased area | ft² | 11,000 |  |  |  |  |  |
Number of additional extension of lease terms | item | 2 |  |  |  |  |  |
Additional lease term | 5 years |  |  |  |  |  |
Deferred rent |  | 13,000 |  | 13,000 |  | $ 16,000 |
Future minimum lease payments |  |  |  |  |  |  |
2021 (represents remaining six months in 2021) |  | 132,000 |  | 132,000 |  |  |
2022 |  | 153,000 |  | 153,000 |  |  |
Total |  | $ 285,000 |  | $ 285,000 |  |  |
Lab equipment |  |  |  |  |  |  |
Operating leases |  |  |  |  |  |  |
Lease term |  |  |  |  |  |  | 1 year
Fixed monthly payments |  |  |  |  |  |  | $ 18,000

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