License Agreement	3 Months Ended
Mar. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
License Agreement	10.License Agreement Equinox Science, LLC In February 2020, the Company entered into an Exclusive License Agreement with Equinox Science, LLC (“Equinox”), pursuant to which Equinox granted us an exclusive, sublicensable, royalty-bearing right and license to certain patents and other Equinox intellectual property to research, develop, make, have made, use, sell, offer for sale and import the compound vorolanib and any pharmaceutical products comprising the compound for the prevention or treatment of age-related macular degeneration, diabetic retinopathy and retinal vein occlusion using our proprietary localized delivery technologies, in each case, throughout the world except China, Hong Kong, Taiwan and Macau. In consideration for the rights granted by Equinox, the Company (i) made a one time, non-refundable, non-creditable upfront cash payment of $1.0 million to Equinox in February 2020, and (ii) agreed to pay milestone payments totaling up to $50 million upon the achievement of certain development and regulatory milestones, consisting of (a) completion of a Phase II clinical trial for the Compound or a Licensed Product, (b) the filing of a new drug application or foreign equivalent for the Compound or a Licensed Product in the United States, European Union or United Kingdom and (c) regulatory approval of the Compound or a Licensed Product in the United States, European Union or United Kingdom. The Company also agreed to pay Equinox tiered royalties based upon annual net sales of Licensed Products in the Territory. The royalties are payable with respect to a Licensed Product in a particular country in the Territory on a country-by-country and Licensed Product-by-Licensed Product basis until the later of (i) twelve years after the first commercial sale of such Licensed Product in such country and (ii) the first day of the month following the month in which a generic product corresponding to such Licensed Product is launched in such country (collectively, the “Royalty Term”). The royalty rates range from the high-single digits to low-double digits depending on the level of annual net sales. The royalty rates are subject to reduction during certain periods when there is no valid patent claim that covers a Licensed Product in a particular country. The Company recorded $1.0 million of R&D expense for the three months ended March 31, 2020 due to the early stage of its preclinical drug development studies.

License Agreement

3 Months Ended

Mar. 31, 2020

Organization Consolidation And Presentation Of Financial Statements [Abstract]

10.License Agreement

Equinox Science, LLC

In February 2020, the Company entered into an Exclusive License Agreement with Equinox Science, LLC (“Equinox”), pursuant to which Equinox granted us an exclusive, sublicensable, royalty-bearing right and license to certain patents and other Equinox intellectual property to research, develop, make, have made, use, sell, offer for sale and import the compound vorolanib and any pharmaceutical products comprising the compound for the prevention or treatment of age-related macular degeneration, diabetic retinopathy and retinal vein occlusion using our proprietary localized delivery technologies, in each case, throughout the world except China, Hong Kong, Taiwan and Macau.

In consideration for the rights granted by Equinox, the Company (i) made a one time, non-refundable, non-creditable upfront cash payment of $1.0 million to Equinox in February 2020, and (ii) agreed to pay milestone payments totaling up to $50 million upon the achievement of certain development and regulatory milestones, consisting of (a) completion of a Phase II clinical trial for the Compound or a Licensed Product, (b) the filing of a new drug application or foreign equivalent for the Compound or a Licensed Product in the United States, European Union or United Kingdom and (c) regulatory approval of the Compound or a Licensed Product in the United States, European Union or United Kingdom.

The Company also agreed to pay Equinox tiered royalties based upon annual net sales of Licensed Products in the Territory. The royalties are payable with respect to a Licensed Product in a particular country in the Territory on a country-by-country and Licensed Product-by-Licensed Product basis until the later of (i) twelve years after the first commercial sale of such Licensed Product in such country and (ii) the first day of the month following the month in which a generic product corresponding to such Licensed Product is launched in such country (collectively, the “Royalty Term”). The royalty rates range from the high-single digits to low-double digits depending on the level of annual net sales. The royalty rates are subject to reduction during certain periods when there is no valid patent claim that covers a Licensed Product in a particular country.

The Company recorded $1.0 million of R&D expense for the three months ended March 31, 2020 due to the early stage of its preclinical drug development studies.