Related Party Transaction	9 Months Ended
Sep. 30, 2019
Related Party Transaction
Related Party Transaction	7. Related Party Transaction On February 12, 2018, the Company entered into an agreement with Sarissa Capital Management LP, and certain of its affiliates (collectively, the “Sarissa Group”) related to the Company’s 2018 Annual Meeting of Stockholders (the “2018 Annual Meeting”). The agreement provided for, among other things, the concurrent appointment of three designees of the Sarissa Group as members of the Company’s Board of Directors and an agreement to recommend and nominate a five-person slate of directors for election at the 2018 Annual Meeting composed of the three new directors and two current directors of the Company and partially reimburse the Sarissa Group $2.7 million for expenses, which reimbursement obligation relating to the 2018 Annual Meeting arose upon execution of the agreement. The Sarissa Group is considered to be a related party due to its representation on the Board of Directors.

Related Party Transaction

9 Months Ended

Sep. 30, 2019

7. Related Party Transaction

On February 12, 2018, the Company entered into an agreement with Sarissa Capital Management LP, and certain of its affiliates (collectively, the “Sarissa Group”) related to the Company’s 2018 Annual Meeting of Stockholders (the “2018 Annual Meeting”). The agreement provided for, among other things, the concurrent appointment of three designees of the Sarissa Group as members of the Company’s Board of Directors and an agreement to recommend and nominate a five-person slate of directors for election at the 2018 Annual Meeting composed of the three new directors and two current directors of the Company and partially reimburse the Sarissa Group $2.7 million for expenses, which reimbursement obligation relating to the 2018 Annual Meeting arose upon execution of the agreement. The Sarissa Group is considered to be a related party due to its representation on the Board of Directors.