Subsequent Events	9 Months Ended
Sep. 30, 2024
Subsequent Events [Abstract]
Subsequent Events	8. Subsequent Events Termination of Material Definitive Agreement As previously disclosed, on April 3, 2023, the Company entered into the A&R License Agreement with Precigen, which A&R License Agreement amended and restated in entirety the parties' previous license agreement, dated October 5, 2018, by and among the same parties, for the grant of certain licenses by Precigen to the Company to develop Sleeping Beauty-transposed neoantigen T-cell receptors for the treatment of solid tumor cancers. On October 4, 2024, the Company provided written notice to Precigen to terminate the A&R License Agreement. The decision to not renew the A&R License Agreement was made after a thorough review of our strategic priorities and business objectives, including recognizing that the non-viral Sleeping Beauty gene transfer platform patent will expire in 2026. The Company continues to prosecute certain of the intellectual property underlying the TCRs targeting driver mutations such as KRAS, TP53 and EGFR, and the hunTR TCR discovery platform used in the discovery of our proprietary TCR library. The Company continues to explore strategic alternatives, including, but not limited to, an acquisition, merger, reverse merger, sale of assets, strategic partnerships, capital raises or other transactions.

Subsequent Events

9 Months Ended

Sep. 30, 2024

Termination of Material Definitive Agreement

As previously disclosed, on April 3, 2023, the Company entered into the A&R License Agreement with Precigen, which A&R License Agreement amended and restated in entirety the parties' previous license agreement, dated October 5, 2018, by and among the same parties, for the grant of certain licenses by Precigen to the Company to develop Sleeping Beauty-transposed neoantigen T-cell receptors for the treatment of solid tumor cancers. On October 4, 2024, the Company provided written notice to Precigen to terminate the A&R License Agreement.

The decision to not renew the A&R License Agreement was made after a thorough review of our strategic priorities and business objectives, including recognizing that the non-viral Sleeping Beauty gene transfer platform patent will expire in 2026. The Company continues to prosecute certain of the intellectual property underlying the TCRs targeting driver mutations such as KRAS, TP53 and EGFR, and the hunTR TCR discovery platform used in the discovery of our proprietary TCR library. The Company continues to explore strategic alternatives, including, but not limited to, an acquisition, merger, reverse merger, sale of assets, strategic partnerships, capital raises or other transactions.