EX-23.1 3 d358004dex231.htm CONSENT OF ERNST & YOUNG LLP

<![CDATA[Consent of Ernst & Young LLP]]>

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statement on Form S-8 pertaining to the 2012 Stock Option and Incentive Plan of Repligen Corporation of our reports dated March 15, 2012, with respect to the consolidated financial statements of Repligen Corporation and the effectiveness of internal control over financial reporting of Repligen Corporation included in its Annual Report (Form 10-K) for the year ended December 31, 2011, filed with the Securities and Exchange Commission.

/s/ Ernst & Young LLP

Boston, Massachusetts

May 24, 2012