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Nature of the Business - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 12 Months Ended
Jun. 21, 2022
Feb. 08, 2022
Dec. 31, 2023
Jan. 31, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2024
Class of Stock [Line Items]              
Accumulated Deficit     $ (389,480)   $ (389,480)   $ (496,828)
Proceeds from issuance of private placement and non-refundable upfront payment     285,000 $ 325,000      
Cash, cash equivalents and marketable securities             $ 625,700
Kite Collaboration Agreement              
Class of Stock [Line Items]              
Non-refundable upfront payment received     85,000 225,000      
IPO              
Class of Stock [Line Items]              
Proceeds from issuance of private placement           $ 127,283  
IPO | Common Stock              
Class of Stock [Line Items]              
Number of shares issued   9,487,500       9,487,500  
Additional stock issued during period shares exercised by underwriters with option to purchase   1,237,500          
Sale of stock, price per share   $ 15          
Net proceeds from initial public offering   $ 127,300          
Cash paid for underwriting discounts and commissions and other offering expenses   $ 15,000          
Proceeds from issuance of private placement           $ 9  
Follow-on offering              
Class of Stock [Line Items]              
Proceeds from issuance of private placement           $ 120,719  
Follow-on offering | Common Stock              
Class of Stock [Line Items]              
Number of shares issued 8,050,000         8,050,000  
Additional stock issued during period shares exercised by underwriters with option to purchase 1,050,000            
Sale of stock, price per share $ 16            
Net proceeds from initial public offering $ 120,700            
Cash paid for underwriting discounts and commissions and other offering expenses $ 8,100            
Proceeds from issuance of private placement           $ 8  
Private Placement              
Class of Stock [Line Items]              
Proceeds from issuance of private placement         $ 299,706 $ 9,958  
Private Placement | Gilead Common Stock Purchase Agreement              
Class of Stock [Line Items]              
Proceeds from issuance of private placement     $ 200,000 $ 100,000      
Private Placement | Common Stock              
Class of Stock [Line Items]              
Number of shares issued         6,720,803 590,318  
Proceeds from issuance of private placement         $ 7 $ 1