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 255,754 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
October 20, 2008