AGREEMENT

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.

February 21, 2013

	XXXXX BROS. ADVISORS, LLC
	By:	/s/ Xxxxx X. Xxxxxxx
		Name: Xxxxx X. Xxxxxxx Title: President
		/s/ Xxxxxx X. Xxxxx
		Xxxxxx X. Xxxxx
		/s/Xxxxx X. Xxxxx
		Xxxxx X. Xxxxx

	FBB Associates
	By:	/s/ Xxxxxx X. Xxxxx
		Name: Xxxxxx X. Xxxxx Title: Partner

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