EXHIBIT 23.2



            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


         We consent to the reference to our firm under the caption "Experts" in
the Registration Statement (Form S-3) and related Prospectus of Geron
Corporation for the registration of shares of its common stock and to the
incorporation by reference therein of our reports dated February 27, 2008 with
respect to the consolidated financial statements of Geron Corporation, and the
effectiveness of internal control over financial reporting of Geron Corporation,
included in its Annual Report (Form 10-K) for the year ended December 31, 2007,
filed with the Securities and Exchange Commission.


                                                  /s/ Ernst & Young LLP

Palo Alto, California
March 26, 2008