Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 22,035	$ 34,755
Short-term investments	36,676	4,958
Accounts receivable	591	3,008
Unbilled receivable from government contracts	3,085	0
Prepaid expenses and other current assets	4,069	2,815
Total current assets	66,456	45,536
Property and equipment, net	9,476	11,731
Prepaid clinical services, long-term	60,116	0
Right-of-use assets, net	21,536	24,840
Intangible assets, net	3,740	4,289
Goodwill	4,508	4,508
Other long-term assets	842	926
Total assets	166,674	91,830
Current liabilities:
Accounts payable	2,524	1,584
Other accrued current liabilities	6,764	5,634
Current portion of operating lease liability	2,882	2,703
Current portion of liability related to sale of future royalties	2,747	3,803
Total current liabilities	80,364	13,724
Operating lease liability, net of current portion	15,319	17,385
Liability related to sale of future royalties, net of current portion	2,128	2,623
Other long-term liabilities	421	293
Total liabilities	98,232	34,025
Commitments and contingencies (Note 8)
Stockholders’ equity:
Preferred stock: $0.0001 par value; 5,000,000 shares authorized; none issued and outstanding as of September 30, 2024 and December 31, 2023	0	0
Common stock: $0.0001 par value; 350,000,000 shares authorized as of September 30, 2024 and 250,000,000 shares authorized as of December 31, 2023; 228,176,446 shares issued and 227,476,324 shares outstanding as of September 30, 2024 and 153,959,853 shares issued and 153,452,833 shares outstanding as of December 31, 2023	23	15
Additional paid-in capital	533,503	467,731
Treasury stock at cost, 700,122 shares as of September 30, 2024 and 507,020 shares as of December 31, 2023	(574)	(366)
Accumulated deficit	(464,537)	(409,574)
Accumulated other comprehensive income (loss)	27	(1)
Total stockholders’ equity	68,442	57,805
Total liabilities and stockholders’ equity	166,674	91,830
Government Contract [Member]
Current liabilities:
Deferred government revenue	$ 65,447	$ 0

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2