EXHIBIT 99.1
AGREEMENT
In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree that this Statement on Schedule 13G relating to the Common Stock of XenoPort, Inc. is being filed with the Securities and Exchange Commission on behalf of each of them.
October 10, 2014
BAKER BROS. ADVISORS LP
By: Baker Bros. Advisors (GP) LLC, its general partner | ||
| By: | /s/ Scott L. Lessing | |
Name: Scott L. Lessing Title: President | ||
| BAKER BROS. ADVISORS (GP) | ||
| LLC | ||
| By: | /s/ Scott L. Lessing | |
Name: Scott L. Lessing Title: President | ||
| /s/ Julian C. Baker | |
| Julian C. Baker | |
| /s/ Felix J. Baker | |
| Felix J. Baker |
| Page 10 of 10 Pages |
