Significant Agreements	3 Months Ended
Mar. 31, 2023
Significant Agreements [Abstract]
SIGNIFICANT AGREEMENTS	NOTE 6. SIGNIFICANT AGREEMENTS *Amgen License Agreement* In November 2019, the Company entered into a worldwide exclusive license agreement with Amgen, Inc. (“Amgen”) for briquilimab (formerly known as AMG-191 and JSP191) that also includes translational science and materials from Stanford University (the “Amgen License Agreement”). The Company was assigned and accepted Amgen’s rights and obligations, effective November 21, 2019, for the Investigator Sponsored Research Agreement (the “ISRA”), entered into in June 2013, between Amgen and The Board of Trustees of the Leland Stanford Junior University (“Stanford”) and the Quality Agreement between Amgen and Stanford, effective as of October 7, 2015. Under the ISRA, the Company received an option to negotiate a definitive license with Stanford for rights to certain Stanford intellectual property related to the study of briquilimab in exchange for an option exercise fee of $1.0 million, payable over a two-year period (the “Option”). The Company exercised the Option on June 2, 2020. As a result, the Company has worldwide exclusive rights to develop and commercialize briquilimab. The Amgen License Agreement terminates on a country-by-country basis on the 10th anniversary of the date on which the exploitation of the licensed products is no longer covered by a valid claim under a licensed patent in such country. On a country-by-country basis, upon the expiration of the term in each country with respect to the licensed products, the licenses to the Company by Amgen become fully paid and non-exclusive. The Company and Amgen have the right to terminate the agreement for a material breach as specified in the agreement. *Stanford License Agreement* In March 2021, the Company entered into the Stanford License Agreement. The Company received a worldwide, exclusive license with a right to sublicense for briquilimab in the field of depleting endogenous blood stem cells in patients for whom hematopoietic cell transplantation is indicated. Stanford transferred to the Company certain know-how and patents related to briquilimab (together, the “Licensed Technology”). Under the terms of this agreement, the Company will use commercially reasonable efforts to develop, manufacture, and sell licensed product and to develop markets for a licensed product. In addition, the Company will use commercially reasonable efforts to meet the milestones as specified in the agreement over the six years from execution of the Stanford License Agreement and must notify Stanford in writing as each milestone is met. The Company will pay annual license maintenance fees, beginning on the first anniversary of the effective date of the agreement and ending upon the first commercial sale of a product, method, or service in the licensed field of use, as follows: $25,000 for each first and second year, $35,000 for each third and fourth year, and $50,000 at each anniversary thereafter ending upon the first commercial sale. The Company is also obligated to pay late-stage clinical development milestones and first commercial sales milestone payments of up to $9.0 million in total. The Company will also pay low single-digit royalties on net sales of licensed products, if approved. The Company paid a $25,000 license maintenance fee in each of March 2023 and 2022, which was recognized as research and development expense in the condensed statements of operations and comprehensive loss for the three months ended March 31, 2023 and 2022. The Stanford License Agreement expires on a country-by-country basis on the last-to-expire valid claim of a licensed patent in such country. The Company may terminate the agreement by giving Stanford written notice at least 12 months in advance of the effective date of termination. The Company may also terminate the agreement solely with respect to any particular patent application or patent by giving Stanford written notice at least 60 days in advance of the effective date of termination. Stanford may terminate the agreement after 90 days from a written notice by Stanford, specifying a problem, including a delinquency on any report required pursuant to agreement or any payment, missing a milestone or for a material breach, unless the Company remediates the problem in that 90-day period.

Significant Agreements

3 Months Ended

Mar. 31, 2023

NOTE 6. SIGNIFICANT AGREEMENTS

Amgen License Agreement

In November 2019, the Company entered into a worldwide exclusive license agreement with Amgen, Inc. (“Amgen”) for briquilimab (formerly known as AMG-191 and JSP191) that also includes translational science and materials from Stanford University (the “Amgen License Agreement”). The Company was assigned and accepted Amgen’s rights and obligations, effective November 21, 2019, for the Investigator Sponsored Research Agreement (the “ISRA”), entered into in June 2013, between Amgen and The Board of Trustees of the Leland Stanford Junior University (“Stanford”) and the Quality Agreement between Amgen and Stanford, effective as of October 7, 2015. Under the ISRA, the Company received an option to negotiate a definitive license with Stanford for rights to certain Stanford intellectual property related to the study of briquilimab in exchange for an option exercise fee of $1.0 million, payable over a two-year period (the “Option”). The Company exercised the Option on June 2, 2020. As a result, the Company has worldwide exclusive rights to develop and commercialize briquilimab.

The Amgen License Agreement terminates on a country-by-country basis on the 10th anniversary of the date on which the exploitation of the licensed products is no longer covered by a valid claim under a licensed patent in such country. On a country-by-country basis, upon the expiration of the term in each country with respect to the licensed products, the licenses to the Company by Amgen become fully paid and non-exclusive. The Company and Amgen have the right to terminate the agreement for a material breach as specified in the agreement.

Stanford License Agreement

In March 2021, the Company entered into the Stanford License Agreement. The Company received a worldwide, exclusive license with a right to sublicense for briquilimab in the field of depleting endogenous blood stem cells in patients for whom hematopoietic cell transplantation is indicated. Stanford transferred to the Company certain know-how and patents related to briquilimab (together, the “Licensed Technology”). Under the terms of this agreement, the Company will use commercially reasonable efforts to develop, manufacture, and sell licensed product and to develop markets for a licensed product. In addition, the Company will use commercially reasonable efforts to meet the milestones as specified in the agreement over the six years from execution of the Stanford License Agreement and must notify Stanford in writing as each milestone is met.

The Company will pay annual license maintenance fees, beginning on the first anniversary of the effective date of the agreement and ending upon the first commercial sale of a product, method, or service in the licensed field of use, as follows: $25,000 for each first and second year, $35,000 for each third and fourth year, and $50,000 at each anniversary thereafter ending upon the first commercial sale. The Company is also obligated to pay late-stage clinical development milestones and first commercial sales milestone payments of up to $9.0 million in total. The Company will also pay low single-digit royalties on net sales of licensed products, if approved. The Company paid a $25,000 license maintenance fee in each of March 2023 and 2022, which was recognized as research and development expense in the condensed statements of operations and comprehensive loss for the three months ended March 31, 2023 and 2022.

The Stanford License Agreement expires on a country-by-country basis on the last-to-expire valid claim of a licensed patent in such country. The Company may terminate the agreement by giving Stanford written notice at least 12 months in advance of the effective date of termination. The Company may also terminate the agreement solely with respect to any particular patent application or patent by giving Stanford written notice at least 60 days in advance of the effective date of termination. Stanford may terminate the agreement after 90 days from a written notice by Stanford, specifying a problem, including a delinquency on any report required pursuant to agreement or any payment, missing a milestone or for a material breach, unless the Company remediates the problem in that 90-day period.