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Related Party Transactions	3 Months Ended
Related Party Transactions	Mar. 31, 2023
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Novartis Institutes for BioMedical Research, Inc. Novartis is a related party because it is a greater than 5% stockholder of the Company. In January 2016, the Company entered into the Novartis Agreement and sold 2,000,000 shares of its Series A-1 Preferred Stock to Novartis for gross proceeds of $13,500. In addition, concurrent with the Company’s initial public offering of common stock, the Company issued Novartis 766,666 shares of its common stock at $15.00 per share, for proceeds of $11,500 in a private placement. During the three months ended March 31, 2023 and 2022, the Company made no cash payments to Novartis related to the Novartis Agreement. As of March 31, 2023 and 2022, no amounts were due from Novartis. The Company did not recognize any collaboration revenue - related party under the Novartis Agreement in the three months ended March 31, 2023 or 2022.