License Funding and Other Agreements Related to the CVR	12 Months Ended
Dec. 31, 2020
License Funding And Other Agreements [Abstract]
License, Funding and Other Agreements Related to the CVR	11. License, Funding and Other Agreements Related to the CVR Contingent Value Rights Agreement As discussed in Note 3, in connection with the Merger, the Company entered into the CVR Agreement with Computershare Inc. and Computershare Trust Company, N.A. as joint rights agent. The CVR holders are entitled to receive net proceeds from the commercialization, if any, received from a third-party commercial partner of RTB101 for a COVID-19 related indication. The total fees and expenses of the Company’s clinical trials for a COVID-19 related indication of RTB101 is limited to $3.0 million under the CVR Agreement. Through October 31, 2020, the Company’s total accumulated spend was $1.1 million of expenses. In November 2020, management terminated the nursing home study due to poor enrollment and as a consequence lowered the probability of finding a partner due to the delay in time to commercialization of RTB101. As a result, the fair value of the CVR liability was decreased by $1.9 million to $1.0 million. Novartis License Agreement On March 23, 2017, resTORbio entered into an exclusive license agreement with Novartis International Pharmaceutical Ltd. (Novartis). Under the agreement, Novartis granted resTORbio an exclusive, field-restricted, worldwide license, to certain intellectual property rights owned or controlled by Novartis, to develop, commercialize and sell one or more therapeutic products comprising RTB101 or RTB101 in combination with everolimus in a fixed dose combination. The exclusive field under the license agreement is for the treatment, prevention and diagnosis of disease and other conditions in all indications in humans and animals. The agreement may be terminated by either party upon a material breach of obligation by the other party that is not cured with 60 days after written notice. resTORbio may terminate the agreement in its entirety or on a product-by-product or country-by-country basis with or without cause with 60 days’ prior written notice. As consideration for the license, resTORbio is required to pay up to an aggregate of $4.3 million upon the satisfaction of clinical milestones, up to an aggregate of $24 million upon the satisfaction of regulatory milestones for the first indication approved, and up to an aggregate of $18 million upon the satisfaction of regulatory milestones for the second indication approved. In addition, resTORbio is required to pay up to an aggregate of $125 million upon the satisfaction of commercial milestones, based on the amount of annual net sales. resTORbio is also required to pay tiered royalties ranging from a mid-single digit percentage to a low-teen digit percentage on annual net sales of products. These royalty obligations last on a product-by-product and country-by-country basis until the latest of (i) the expiration of the last valid claim of a Novartis patent covering a subject product, (ii) the expiration of any regulatory exclusivity for the subject product in a country, or (iii) the 10^th anniversary of the first commercial sale in the country, and are subject to a reduction after the expiration of the last valid claim of a Novartis patent or the introduction of a generic equivalent of a product in a country. As of December 31, 2020, none of the remaining clinical milestones, regulatory milestones, sales milestones, or royalties had been reached or were probable of achievement. National Institute of Health In May 2019, resTORbio was awarded a 5-year grant for up to $1.5 million from the National Institutes of Health (the NIH) to study RTB101 and the regulation of antiviral immunity in the elderly. resTORbio is entitled to use the award solely to conduct the research and is solely responsible for commencing and conducting the research and will furnish periodic progress updates to the NIH throughout the term of the award. After completing the research, resTORbio must provide the NIH with a formal report describing the work performed and the results of the research. For funds received under the NIH funding agreement, resTORbio recognizes a reduction in research and development expenses in an amount equal to the qualifying expenses incurred in each period up to the amount funded by the NIH. Qualifying expenses incurred by resTORbio in advance of funding by the NIH are recorded in the consolidated balance sheets as other current assets. For the year ended December 31, 2020, $0.7 million qualifying expenses have been incurred and $0.6 million have been funded by the NIH.

License Funding and Other Agreements Related to the CVR

12 Months Ended

Dec. 31, 2020

License Funding And Other Agreements [Abstract]

License, Funding and Other Agreements Related to the CVR

11. License, Funding and Other Agreements Related to the CVR

Contingent Value Rights Agreement

As discussed in Note 3, in connection with the Merger, the Company entered into the CVR Agreement with Computershare Inc. and Computershare Trust Company, N.A. as joint rights agent. The CVR holders are entitled to receive net proceeds from the commercialization, if any, received from a third-party commercial partner of RTB101 for a COVID-19 related indication. The total fees and expenses of the Company’s clinical trials for a COVID-19 related indication of RTB101 is limited to $3.0 million under the CVR Agreement. Through October 31, 2020, the Company’s total accumulated spend was $1.1 million of expenses. In November 2020, management terminated the nursing home study due to poor enrollment and as a consequence lowered the probability of finding a partner due to the delay in time to commercialization of RTB101. As a result, the fair value of the CVR liability was decreased by $1.9 million to $1.0 million.

Novartis License Agreement

On March 23, 2017, resTORbio entered into an exclusive license agreement with Novartis International Pharmaceutical Ltd. (Novartis). Under the agreement, Novartis granted resTORbio an exclusive, field-restricted, worldwide license, to certain intellectual property rights owned or controlled by Novartis, to develop, commercialize and sell one or more therapeutic products comprising RTB101 or RTB101 in combination with everolimus in a fixed dose combination. The exclusive field under the license agreement is for the treatment, prevention and diagnosis of disease and other conditions in all indications in humans and animals.

The agreement may be terminated by either party upon a material breach of obligation by the other party that is not cured with 60 days after written notice. resTORbio may terminate the agreement in its entirety or on a product-by-product or country-by-country basis with or without cause with 60 days’ prior written notice.

As consideration for the license, resTORbio is required to pay up to an aggregate of $4.3 million upon the satisfaction of clinical milestones, up to an aggregate of $24 million upon the satisfaction of regulatory milestones for the first indication approved, and up to an aggregate of $18 million upon the satisfaction of regulatory milestones for the second indication approved. In addition, resTORbio is required to pay up to an aggregate of $125 million upon the satisfaction of commercial milestones, based on the amount of annual net sales. resTORbio is also required to pay tiered royalties ranging from a mid-single digit percentage to a low-teen digit percentage on annual net sales of products. These royalty obligations last on a product-by-product and country-by-country basis until the latest of (i) the expiration of the last valid claim of a Novartis patent covering a subject product, (ii) the expiration of any regulatory exclusivity for the subject product in a country, or (iii) the 10^th anniversary of the first commercial sale in the country, and are subject to a reduction after the expiration of the last valid claim of a Novartis patent or the introduction of a generic equivalent of a product in a country. As of December 31, 2020, none of the remaining clinical milestones, regulatory milestones, sales milestones, or royalties had been reached or were probable of achievement.

National Institute of Health

In May 2019, resTORbio was awarded a 5-year grant for up to $1.5 million from the National Institutes of Health (the NIH) to study RTB101 and the regulation of antiviral immunity in the elderly. resTORbio is entitled to use the award solely to conduct the research and is solely responsible for commencing and conducting the research and will furnish periodic progress

updates to the NIH throughout the term of the award. After completing the research, resTORbio must provide the NIH with a formal report describing the work performed and the results of the research.

For funds received under the NIH funding agreement, resTORbio recognizes a reduction in research and development expenses in an amount equal to the qualifying expenses incurred in each period up to the amount funded by the NIH. Qualifying expenses incurred by resTORbio in advance of funding by the NIH are recorded in the consolidated balance sheets as other current assets. For the year ended December 31, 2020, $0.7 million qualifying expenses have been incurred and $0.6 million have been funded by the NIH.