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 13D relating to the Common Stock, $0.0001 par value, of Genomic Health, Inc. is being filed with the Securities and Exchange Commission on behalf of each of them.
May 17, 2012
BAKER BROS. ADVISORS, 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 |