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                      UNITED STATES SECURITIES AND EXCHANGE
                                   COMMISSION
                             Washington, D.C. 20549

                                   FORM 10-Q/A

                               Amendment No. 1 to

(Mark One)
   X        QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
 -----      EXCHANGE ACT OF 1934

            FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2002

                            OR

            TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
 -----      EXCHANGE ACT OF 1934

          FOR THE TRANSITION PERIOD FROM _____________ TO ____________.

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                        COMMISSION FILE NUMBER: 000-21291

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                           INTROGEN THERAPEUTICS, INC.
             (Exact name of Registrant as specified in its charter)

                    DELAWARE                              74-2704230
         (State or other jurisdiction                  (I.R.S. Employer
       of incorporation or organization)             Identification Number)

                         301 CONGRESS AVENUE, SUITE 1850
                               AUSTIN, TEXAS 78701
          (Address of principal executive offices, including zip code)

                                 (512) 708-9310
              (Registrant's telephone number, including area code)

Indicate by check mark whether the Registrant: (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for shorter period that the Registrant
was required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days. Yes X   No
                                      ---    ---

As of September 30, 2002, the Registrant had 21,464,748 shares of its common
stock, $0.001 par value per share, issued and outstanding.

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EXPLANATORY NOTE

     This Form 10-Q/A is being filed as Amendment No. 1 to the Form 10-Q of
Introgen Therapeutics, Inc. ("Introgen") filed with the Securities and Exchange
Commission on November 13, 2002 ("Form 10-Q") for the purpose of adding Item 4
of Part I, Controls and Procedures, which was inadvertently omitted from
Introgen's Form 10-Q. Except as set forth in this explanatory note, there are no
changes to the Form 10-Q.



                                      -2-




                                     PART I
                              FINANCIAL INFORMATION

ITEM 4. CONTROLS AND PROCEDURES.

     Within 90 days prior to the date of filing this report, an evaluation was
performed under the supervision and with the participation of our management,
including our Chief Executive Officer and Chief Financial Officer, of the
effectiveness of the design and operation of our disclosure controls and
procedures (as defined in Rules 13a-14(c) and 15d-14(c) under the Securities
Exchange Act of 1934, as amended). Based on and as of the time of such
evaluation, our management, including the Chief Executive Officer and Chief
Financial Officer, concluded that our disclosure controls and procedures were
effective in timely alerting them to material information relating to the
company required to be included in our reports filed or submitted under the
Securities Exchange Act of 1934, as amended. There have been no significant
changes in our internal controls or in other factors that could significantly
affect internal controls and procedures subsequent to the time of such
evaluation.

                                     PART II
                                OTHER INFORMATION

     No changes.



                                      -3-




                                   SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this Amendment No. 1 on Form 10-Q/A to be signed on
its behalf by the undersigned thereunto duly authorized.

                                 INTROGEN THERAPEUTICS, INC.


Date:  November 14, 2002         By: /s/ JAMES W. ALBRECHT, JR.
                                    ------------------------------------
                                    James W. Albrecht, Jr.
                                    On behalf of the Registrant and as Chief
                                    Financial Officer (Principal Financial and
                                    Accounting Officer)



                                      -4-



                                 CERTIFICATIONS


I, David G. Nance, certify that:

1.       I have reviewed this Amendment No. 1 to the Quarterly Report on Form
         10-Q/A of Introgen Therapeutics, Inc.;

2.       Based on my knowledge, this Quarterly Report does not contain any
         untrue statement of a material fact or omit to state a material fact
         necessary to make the statements made, in light of the circumstances
         under which such statements were made, not misleading with respect to
         the period covered by this Quarterly Report;

3.       Based on my knowledge, the financial statements, and other financial
         information included in this Quarterly Report, fairly present in all
         material respects the financial condition, results of operations and
         cash flows of Introgen as of, and for, the periods presented in this
         Quarterly Report;

4.       Introgen's other certifying officer and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in Exchange Act Rules 13a-14 and 15d-14) for Introgen and we
         have:

         a)       designed such disclosure controls and procedures to ensure
                  that material information relating to Introgen, including its
                  consolidated subsidiaries, is made known to us by others
                  within those entities, particularly during the period in which
                  this Quarterly Report is being prepared;

         b)       evaluated the effectiveness of Introgen's disclosure controls
                  and procedures as of a date within 90 days prior to the filing
                  date of this Quarterly Report (the "Evaluation Date"); and

         c)       presented in this Quarterly Report our conclusions about the
                  effectiveness of the disclosure controls and procedures based
                  on our evaluation as of the Evaluation Date;

5.       Introgen's other certifying officer and I have disclosed, based on our
         most recent evaluation, to Introgen's auditors and the audit committee
         of Introgen's board of directors (or persons performing the equivalent
         function):

         a)       all significant deficiencies in the design or operation of
                  internal controls which could adversely affect Introgen's
                  ability to record, process, summarize and report financial
                  data and have identified for Introgen's auditors any material
                  weaknesses in internal controls; and

         b)       any fraud, whether or not material, that involves management
                  or other employees who have a significant role in Introgen's
                  internal controls; and

6.       Introgen's other certifying officer and I have indicated in this
         Quarterly Report whether or not there were significant changes in
         internal controls or in other factors that could significantly affect
         internal controls subsequent to the date of our most recent evaluation,
         including any corrective actions with regard to significant
         deficiencies and material weaknesses.


Date: November 14, 2002                      By: /s/ DAVID G. NANCE
                                                 -------------------------------
                                                 David G. Nance
                                                 Chief Executive Officer






I, James W. Albrecht, Jr., certify that:

1.       I have reviewed this Amendment No. 1 to the Quarterly Report on Form
         10-Q/A of Introgen Therapeutics, Inc.;

2.       Based on my knowledge, this Quarterly Report does not contain any
         untrue statement of a material fact or omit to state a material fact
         necessary to make the statements made, in light of the circumstances
         under which such statements were made, not misleading with respect to
         the period covered by this Quarterly Report;

3.       Based on my knowledge, the financial statements, and other financial
         information included in this Quarterly Report, fairly present in all
         material respects the financial condition, results of operations and
         cash flows of Introgen as of, and for, the periods presented in this
         Quarterly Report;

4.       Introgen's other certifying officer and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in Exchange Act Rules 13a-14 and 15d-14) for Introgen and we
         have:

         a)       designed such disclosure controls and procedures to ensure
                  that material information relating to Introgen, including its
                  consolidated subsidiaries, is made known to us by others
                  within those entities, particularly during the period in which
                  this Quarterly Report is being prepared;

         b)       evaluated the effectiveness of Introgen's disclosure controls
                  and procedures as of a date within 90 days prior to the filing
                  date of this Quarterly Report (the "Evaluation Date"); and

         c)       presented in this Quarterly Report our conclusions about the
                  effectiveness of the disclosure controls and procedures based
                  on our evaluation as of the Evaluation Date;

5.       Introgen's other certifying officer and I have disclosed, based on our
         most recent evaluation, to Introgen's auditors and the audit committee
         of Introgen's board of directors (or persons performing the equivalent
         function):

         a)       all significant deficiencies in the design or operation of
                  internal controls which could adversely affect Introgen's
                  ability to record, process, summarize and report financial
                  data and have identified for Introgen's auditors any material
                  weaknesses in internal controls; and

         b)       any fraud, whether or not material, that involves management
                  or other employees who have a significant role in Introgen's
                  internal controls; and

6.       Introgen's other certifying officer and I have indicated in this
         Quarterly Report whether or not there were significant changes in
         internal controls or in other factors that could significantly affect
         internal controls subsequent to the date of our most recent evaluation,
         including any corrective actions with regard to significant
         deficiencies and material weaknesses.


Date: November 14, 2002                      By: /s/ JAMES W. ALBRECHT, JR.
                                                 -------------------------------
                                                 James W. Albrecht, Jr.
                                                 Chief Financial Officer






                                  EXHIBIT INDEX



         EXHIBIT
         NUMBER                               DESCRIPTION
         -------                              -----------

                 
         99.1       Certification of Chief Executive Officer and Chief Financial
                    Officer Pursuant to 18 U.S.C. Section 1350, as Adopted
                    Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002