Decision Making The Joint Development Committee and Joint Commercialization Committee shall each act by unanimous agreement of its members, with each Party having one vote. If the Joint Development Committee or Joint Commercialization Committee, after [* * *] (or such other period as the Parties may otherwise agree) of good faith efforts to reach a unanimous decision on an issue, fails to reach such a unanimous decision, then either Party may refer such issue to the Executive Officers. Such Executive Officers shall meet promptly thereafter and shall negotiate in good faith to resolve the issues. If Executive Officers cannot resolve such issue within [* * *] of referral of such issue to the Executive Officers, the resolution of such issue shall be as follows: (a) if such issue properly originated at the Joint Development Committee, determined by the Developing Party of the relevant Licensed Compound or Licensed Product at issue; provided that, notwithstanding the foregoing: (i) if Acceleron is the Developing Party and such issue relates to (x) the approval of an Additional Development Disease, or (y) matters under Section 5.6.3(d), then such issue shall be determined by [* * *]; (ii) regardless of which Party is the Developing Party, such issue shall be determined by [* * *] following the earliest of: (x) [* * *], and (y) the Joint Development Committee’s decision to go forward with a Phase 3 Clinical Trial of the relevant Licensed Compound or Licensed Product; provided that [* * *] shall continue to determine any issues that relate to the budget for and the conduct of the [* * *]; and (iii) regardless of which Party is the Developing Party, such issue shall be determined by [* * *] following the earliest of: (x) [* * *], and (y) the occurrence of any [* * *]; and (b) if such issue properly originated at the Joint Commercialization Committee, determined by Celgene. Notwithstanding the foregoing, none of Acceleron, Celgene, the Joint Development Committee or the Joint Commercialization Committee may make any decision inconsistent with the express terms of this Agreement without the prior written consent of each Party.