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In-Process Research & Development and Goodwill	12 Months Ended
	Dec. 31, 2022
In-Process Research & Development and Goodwill [Abstract]
In-Process Research & Development and Goodwill	8) In-Process Research & Development and Goodwill In-Process Research & Development In 2018, the Company acquired IRX, which was accounted for as a business combination.  The Company recorded IPR&D in the amount of $6.0 million, which represented the fair value assigned to technologies that were acquired in connection with the IRX acquisition and which have not reached technological feasibility and have no alternative future use. In June 2022, the Company received results from the INSPIRE phase 2 trial of IRX-2, a multi-cytokine biologic immunotherapy, in patients with newly diagnosed stage II, III or IVA squamous cell carcinoma of the oral cavity. The IRX-2 multi-cytokine biologic immunotherapy represents substantially all the fair value assigned to the technologies of IRX that the Company acquired. Despite outcomes that favored IRX-2 in certain predefined subgroups, the INSPIRE trial did not meet the primary endpoint of Event-Free Survival. Significant additional clinical development work would be required to advance IRX-2 in the form of additional Phase 2 and 3 studies to further evaluate the treatment effect of IRX-2 in patient subgroups and in combination with checkpoint inhibitor therapies.  The INSPIRE trial was the only Company-sponsored study of IRX-2.  Based on the totality of available information, the Company currently does not have plans to further develop the IRX-2 product candidate. As such, the Company determined that the carrying value of the IPR&D asset was impaired and recognized a non-cash impairment charge of approximately $6.0 million on the consolidated statement of operations during 2022, which reduced the value of the asset to zero. Goodwill The Company recorded goodwill in the amount of $2.0 million related to the IRX Acquisition. As of December 31, 2022, the Company performed a qualitative assessment to determine whether it was more likely than not that the fair value of the entity is less than its carrying value of goodwill. Such qualitative factors include macroeconomic conditions, industry and market considerations, cost factors, overall financial performance and other relevant events.  Due to the decline in the Company’s stock price during 2022, the Company determined there were indications of impairment of the goodwill. Accordingly, the Company proceeded to a quantitative assessment of impairment and determined that the fair value of the reporting unit exceeded the carrying amount of goodwill, and therefore, the goodwill was not impaired as of December 31, 2022.

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- Definition

The entire disclosure for goodwill and intangible assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-URI https://asc.fasb.org/topic&trid=2144416

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