ACCRUED LIABILITIES Accrued liabilities consisted of the following: | | | | | | | | | | | | | June 30, 2022 | | December 31, 2021 | | | | | | | | | | | | | | | | (in thousands) | Accrued outsourced clinical trials and preclinical studies | $ | 13,197 | | | $ | 6,316 | | Accrued employee compensation and related taxes | 2,577 | | | 3,652 | | Operating lease liability, short-term | 580 | | | 520 | | Accrued legal fees and expenses | 79 | | | 80 | | Accrued other professional service fees | 385 | | | 140 | | Value of liability-classified stock purchase warrants | 100 | | | 100 | | Other accrued liabilities | 121 | | | 210 | | | $ | 17,039 | | | $ | 11,018 | |
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