Financings	3 Months Ended
Mar. 31, 2022
Text Block [Abstract]
Financings	2. Financings 2021 Loan and Security Agreement On August 6, 2021, the Company entered into a Loan and Security Agreement with Silicon Valley Bank and affiliates of Silicon Valley Bank (collectively, "SVB") (the "Loan and Security Agreement"). The Loan and Security Agreement provided for an initial term loan of $25.0 million funded at the closing ("Term A Tranche"), with an additional tranche of $25.0 million available if certain funding and clinical milestones were met by August 31, 2022 ("Term B Tranche"). Effective December 28, 2021, the Company, entered into a First Amendment (the “Amendment”) to the Loan and Security Agreement (as so amended, the "Amended Loan and Security Agreement"). The Amended Loan and Security Agreement extends the interest-only period through August 31, 2022, and provides for an automatic extension through August 31, 2023, if the Amended Milestones (as defined below) are met by August 31, 2022. The Amendment eliminated the Term B Tranche, which remained unfunded, leaving only the Term A Tranche (the "SVB Facility"). Under the Amended Loan and Security Agreement, the SVB Facility will mature on August 1, 2023; however, if the Company achieves the Amended Milestones on or prior to August 31, 2022, then the maturity will automatically extend to August 1, 2024. Please refer to Note 4 - Debt, for further discussion of the Loan and Security Agreement and the Amended Loan and Security Agreement.

Financings

3 Months Ended

Mar. 31, 2022

2021 Loan and Security Agreement

On August 6, 2021, the Company entered into a Loan and Security Agreement with Silicon Valley Bank and affiliates of Silicon Valley Bank (collectively, "SVB") (the "Loan and Security Agreement"). The Loan and Security Agreement provided for an initial term loan of $25.0 million funded at the closing ("Term A Tranche"), with an additional tranche of $25.0 million available if certain funding and clinical milestones were met by August 31, 2022 ("Term B Tranche").

Effective December 28, 2021, the Company, entered into a First Amendment (the “Amendment”) to the Loan and Security Agreement (as so amended, the "Amended Loan and Security Agreement").

The Amended Loan and Security Agreement extends the interest-only period through August 31, 2022, and provides for an automatic extension through August 31, 2023, if the Amended Milestones (as defined below) are met by August 31, 2022. The Amendment eliminated the Term B Tranche, which remained unfunded, leaving only the Term A Tranche (the "SVB Facility"). Under the Amended Loan and Security Agreement, the SVB Facility will mature on August 1, 2023; however, if the Company achieves the Amended Milestones on or prior to August 31, 2022, then the maturity will automatically extend to August 1, 2024.

Please refer to Note 4 - Debt, for further discussion of the Loan and Security Agreement and the Amended Loan and Security Agreement.