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 349,138 shares of its common stock and to
the incorporation by reference therein of our reports dated March 14, 2007, with
respect to the consolidated financial statements of Geron Corporation, Geron
Corporation management's assessment of the effectiveness of internal control
over financial reporting, 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, 2006, filed with the Securities and
Exchange Commission.


                                                           /s/ Ernst & Young LLP

Palo Alto, California
December 4, 2007