Prepaid Drug Product	6 Months Ended
Jun. 30, 2023
Prepaid Drug Product
Prepaid Drug Product	3. Prepaid Drug Product Advance payments, including nonrefundable amounts, for goods or services that will be used or rendered for future clinical development activities are deferred and capitalized. Such amounts will be recognized as an expense as the related goods are delivered or the related services are performed. The Company recognized certain expenses and incurred installment costs for its contract drug manufacturing and raw material suppliers with prepayments totaling $3.6 million as of December 31, 2022 pursuant to drug supply contracts for the manufacture and delivery of prexigebersen for testing in a Phase 2 clinical trial. The Company recognized certain expenses and incurred additional installment costs during the first six months of 2023, with advanced payments remaining to be expensed totaling $1.1 million as of June 30, 2023.

Prepaid Drug Product

6 Months Ended

Jun. 30, 2023

3. Prepaid Drug Product

Advance payments, including nonrefundable amounts, for goods or services that will be used or rendered for future clinical development activities are deferred and capitalized. Such amounts will be recognized as an expense as the related goods are delivered or the related services are performed. The Company recognized certain expenses and incurred installment costs for its contract drug manufacturing and raw material suppliers with prepayments totaling $3.6 million as of December 31, 2022 pursuant to drug supply contracts for the manufacture and delivery of prexigebersen for testing in a Phase 2 clinical trial. The Company recognized certain expenses and incurred additional installment costs during the first six months of 2023, with advanced payments remaining to be expensed totaling $1.1 million as of June 30, 2023.