EXHIBIT 1

JOINT FILING AGREEMENT

In accordance with Rule 13d−1(k)(1) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the Common Stock of Aegerion Pharmaceuticals, Inc. and further agree that this Joint Filing Agreement be included as an Exhibit to such joint filings. In evidence thereof, the undersigned, being duly authorized, have executed this Joint Filing Agreement this 5^th day of February, 2015.

SARISSA CAPITAL MANAGEMENT LP

By:	/s/ Mark DiPaolo
	Name: Mark DiPaolo
	Title: General Counsel

SARISSA CAPITAL DOMESTIC FUND LP

By: Sarissa Capital Fund GP LP, its general partner

By:	/s/ Mark DiPaolo
	Name: Mark DiPaolo
	Title: Authorized Person

SARISSA CAPITAL OFFSHORE MASTER FUND LP

By: Sarissa Capital Offshore Fund GP LLC, its general partner

By:	/s/ Mark DiPaolo
	Name: Mark DiPaolo
	Title: Authorized Person

/s/Alexander J. Denner________________________ Alexander J. Denner