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v3.22.1

Consolidated Statements of Comprehensive Loss-Unaudited - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Revenues: |  |
Royalties and other revenue | $ 37 | $ 27
Operating expenses: |  |
Research and development, including stock-based compensation of $1,032, and $1,286, respectively | 14,926 | 12,609
Selling, general and administrative, including stock-based compensation of $1,740, and $1,565, respectively | 8,491 | 8,257
Total operating expenses | 23,417 | 20,866
Loss from operations | (23,380) | (20,839)
Interest expense | (110) | (167)
Interest and other income, net | 14 | 48
Net loss | $ (23,476) | $ (20,958)
Net income (loss) per common share, Basic | $ (0.16) | $ (0.15)
Shares used in computing net loss per common share, Basic | 149,150 | 143,379
Unrealized gain on investments | $ (27) | $ 11
Comprehensive loss | (23,503) | (20,947)
Supplemental Income Statement Elements [Abstract] |  |
Stock-based compensation expense associated with selling, general and administrative expense | 1,740 | 1,565
Stock-based compensation expense associated with research and development expense | $ 1,032 | $ 1,286

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