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

                                  SCHEDULE 13G

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                               (AMENDMENT NO. 1)

                              CANCERVAX CORPORATION
                                (Name of Issuer)

                   COMMON STOCK, PAR VALUE $0.00004 PER SHARE
                         (Title of Class of Securities)

                                    13738Y107
                                 (CUSIP Number)

                                DECEMBER 31, 2003
             (Date of Event Which Requires Filing of this Statement)



        Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:

        [ ]    Rule 13d-1(b)

        [X]    Rule 13d-1(c)

        [ ]    Rule 13d-1(d)



---------------------------------                     --------------------------
      CUSIP No. 13738Y108              13G                Page 2 of 10 Pages
---------------------------------                     --------------------------


--------------------------------------------------------------------------------
    1      NAMES OF REPORTING PERSONS
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

           DONALD L. MORTON, M.D.
--------------------------------------------------------------------------------
    2      CHECK THE APPROPRIATE BOX IF MEMBER OF A GROUP*              (a)  [ ]

                                                                        (b)  [ ]
--------------------------------------------------------------------------------
    3      SEC USE ONLY
--------------------------------------------------------------------------------
    4      CITIZENSHIP OR PLACE OF ORGANIZATION

           UNITED STATES
--------------------------------------------------------------------------------
   NUMBER OF        5    SOLE VOTING POWER
                         4,533,443
    SHARES        --------------------------------------------------------------
                    6    SHARED VOTING POWER
 BENEFICIALLY            648,039 (1)
                  --------------------------------------------------------------
 OWNED BY EACH      7    SOLE DISPOSITIVE POWER
                         4,533,443
  REPORTING       --------------------------------------------------------------
                    8    SHARED DISPOSITIVE POWER
 PERSON WITH             648,039 (1)
--------------------------------------------------------------------------------
    9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
           REPORTING PERSON
           5,181,482 (1)
--------------------------------------------------------------------------------
   10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)                      [ ]
           EXCLUDES CERTAIN SHARES*
--------------------------------------------------------------------------------
   11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
           18.6% (2)
--------------------------------------------------------------------------------
   12      TYPE OF REPORTING PERSON*
           IN
--------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

(1)  648,039 Shares owned by Donald L. Morton, M.D., Grantor Retained Annuity 
     Trust, dated September 6, 2002, for which Dr. Morton disclaims beneficial
     ownership.

(2)  Based on 27,807,963 shares of common stock outstanding.



---------------------------------                     --------------------------
      CUSIP No. 13738Y108              13G                Page 3 of 10 Pages
---------------------------------                     --------------------------


--------------------------------------------------------------------------------
    1      NAMES OF REPORTING PERSONS
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

           DONALD L. MORTON FAMILY TRUST DATED JUNE 2, 1989, DONALD L.
           MORTON TRUSTEE
--------------------------------------------------------------------------------
    2      CHECK THE APPROPRIATE BOX IF MEMBER OF A GROUP*              (a)  [ ]

                                                                        (b)  [ ]
--------------------------------------------------------------------------------
    3      SEC USE ONLY
--------------------------------------------------------------------------------
    4      CITIZENSHIP OR PLACE OF ORGANIZATION

           CALIFORNIA, UNITED STATES
--------------------------------------------------------------------------------
   NUMBER OF        5    SOLE VOTING POWER
                         4,533,443
    SHARES        --------------------------------------------------------------
                    6    SHARED VOTING POWER
 BENEFICIALLY            648,039 (1)
                  --------------------------------------------------------------
 OWNED BY EACH      7    SOLE DISPOSITIVE POWER
                         4,533,443
  REPORTING       --------------------------------------------------------------
                    8    SHARED DISPOSITIVE POWER
 PERSON WITH             648,039 (1)
--------------------------------------------------------------------------------
    9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
           REPORTING PERSON
           5,181,482 (1)
--------------------------------------------------------------------------------
   10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)                      [ ]
           EXCLUDES CERTAIN SHARES*
--------------------------------------------------------------------------------
   11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
           18.6% (2)
--------------------------------------------------------------------------------
   12      TYPE OF REPORTING PERSON*
           OO
--------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

(1)  648,039 Shares owned by Donald L. Morton, M.D., Grantor Retained Annuity 
     Trust, dated September 6, 2002, for which the Reporting Person disclaims
     beneficial ownership.

(2)  Based on 27,807,963 shares of common stock outstanding.



---------------------------------                     --------------------------
      CUSIP No. 13738Y108              13G                Page 4 of 10 Pages
---------------------------------                     --------------------------


--------------------------------------------------------------------------------
    1      NAMES OF REPORTING PERSONS
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

           ONCOVAC, INC., A CALIFORNIA CORPORATION
--------------------------------------------------------------------------------
    2      CHECK THE APPROPRIATE BOX IF MEMBER OF A GROUP*              (a)  [ ]

                                                                        (b)  [ ]
--------------------------------------------------------------------------------
    3      SEC USE ONLY
--------------------------------------------------------------------------------
    4      CITIZENSHIP OR PLACE OF ORGANIZATION

           CALIFORNIA, UNITED STATES
--------------------------------------------------------------------------------
   NUMBER OF        5    SOLE VOTING POWER
                         98,814
    SHARES        --------------------------------------------------------------
                    6    SHARED VOTING POWER
 BENEFICIALLY            NONE
                  --------------------------------------------------------------
 OWNED BY EACH      7    SOLE DISPOSITIVE POWER
                         98,814
  REPORTING       --------------------------------------------------------------
                    8    SHARED DISPOSITIVE POWER
 PERSON WITH             NONE
--------------------------------------------------------------------------------
    9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
           REPORTING PERSON

           98,814
--------------------------------------------------------------------------------
   10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)                      [ ]
           EXCLUDES CERTAIN SHARES*
--------------------------------------------------------------------------------
   11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
           .4 % (1)
--------------------------------------------------------------------------------
   12      TYPE OF REPORTING PERSON*
           CO
--------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

(1)  Based on 27,807,963 shares of common stock outstanding.




---------------------------------                     --------------------------
      CUSIP No. 13738Y108              13G                Page 5 of 10 Pages
---------------------------------                     --------------------------

--------------------------------------------------------------------------------
    1      NAMES OF REPORTING PERSONS
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

           DONALD L. MORTON, M.D., GRANTOR RETAINED ANNUITY TRUST DATED
           SEPTEMBER 6, 2002
--------------------------------------------------------------------------------
    2      CHECK THE APPROPRIATE BOX IF MEMBER OF A GROUP*             (a)  [ ]

                                                                       (b)  [ ]
--------------------------------------------------------------------------------
    3      SEC USE ONLY
--------------------------------------------------------------------------------
    4      CITIZENSHIP OR PLACE OF ORGANIZATION

           CALIFORNIA, UNITED STATES
--------------------------------------------------------------------------------
   NUMBER OF        5    SOLE VOTING POWER
                         648,039
    SHARES        --------------------------------------------------------------
                    6    SHARED VOTING POWER
 BENEFICIALLY            NONE
                  --------------------------------------------------------------
 OWNED BY EACH      7    SOLE DISPOSITIVE POWER
                         648,039
  REPORTING       --------------------------------------------------------------
                    8    SHARED DISPOSITIVE POWER
 PERSON WITH             NONE
--------------------------------------------------------------------------------
    9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
           REPORTING PERSON

           719,849
--------------------------------------------------------------------------------
   10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)                      [ ]
           EXCLUDES CERTAIN SHARES*
--------------------------------------------------------------------------------
   11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
           2.3% (1)
--------------------------------------------------------------------------------
   12      TYPE OF REPORTING PERSON*
           OO
--------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

(1)  648,039 Shares owned by Donald L. Morton, M.D., Grantor Retained Annuity 
     Trust, dated September 6, 2002, for which the Reporting Person disclaims
     beneficial ownership.

(2)  Based on 27,807,963 shares of common stock outstanding.



CUSIP No. 13738Y107



ITEM 1(a).     NAME OF ISSUER:

               CancerVax Corporation

ITEM 1(b).     ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

               2110 Rutherford Road, Carlsbad, California 92008

ITEM 2(a).     NAME OF PERSON FILING:

               This Schedule 13G is being filed by the following persons:

               (i)    Donald L. Morton, M.D.

               (ii)   Donald L. Morton Family Trust dated June 2, 1989

               (iii)  Donald L. Morton, M.D., Grantor Retained Annuity Trust
                      dated September 6, 2002

               (iv)   OncoVac, Inc, a California corporation

ITEM 2(b).     ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:

               (i)    Donald L. Morton, M.D.
                      c/o Valensi, Rose, Magaram, Morris & Murphy 
                      2029 Century Park East, Suite 2050
                      Los Angeles, CA 90067
               (ii)   Donald L. Morton Family Trust dated June 2, 1989
                      c/o Valensi, Rose, Magaram, Morris & Murphy
                      2029 Century Park East, Suite 2050
                      Los Angeles, CA 90067
               (iii)  Donald L. Morton, M.D., Grantor Retained Annuity Trust
                      c/o Valensi, Rose, Magaram, Morris & Murphy
                      2029 Century Park East, Suite 2050
                      Los Angeles, CA 90067
               (iv)   OncoVac, Inc.
                      c/o Valensi, Rose, Magaram, Morris & Murphy
                      2029 Century Park East, Suite 2050
                      Los Angeles, CA 90067

ITEM 2(c).     CITIZENSHIP:

               Donald L. Morton is a United States citizen; Donald L. Morton
               Family Trust dated June 2, 1989 is a trust organized under the
               laws of the state of California; Donald L. Morton, M.D., Grantor
               Retained Annuity Trust is a trust organized under the laws of the
               state of California; and OncoVac, Inc. is a corporation organized
               under the laws of the state of California.


                                       6


ITEM 2(d).     TITLE OF CLASS OF SECURITIES:

               Common Stock, Par Value $0.00004 Per Share

ITEM 2(e).     CUSIP NUMBER:

               13738Y107

ITEM 3.        IF THIS STATEMENT IS FILED PURSUANT TO RULE 13D-1(b), OR
               13D-2(b) OR (c), CHECK WHETHER THE PERSON FILING IS A:

               (a)  [ ]   Broker or dealer registered under Section 15 of the
                          Exchange Act.

               (b)  [ ]   Bank as defined in Section 3(a)(6) of the Exchange
                          Act.

               (c)  [ ]   Insurance company as defined in Section 3(a)(19) of
                          the Exchange Act.

               (d)  [ ]   Investment company registered under Section 8 of the
                          Investment Company Act.

               (e)  [ ]   An investment adviser in accordance with Rule
                          13d-1(b)(1)(ii)(E);

               (f)  [ ]   An employee benefit plan or endowment fund in
                          accordance with Rule 13d-1(b)(1)(ii)(F);

               (g)  [ ]   A parent holding company or control person in
                          accordance with Rule 13d-1(b)(1)(ii)(G);

               (h)  [ ]   A savings association as defined in Section 3(b) of
                          the Federal Deposit Insurance Act;

               (i)  [ ]   A church plan that is excluded from the definition of
                          an investment company under Section 3(c)(14) of the
                          Investment Company Act;

               (j)  [ ]   Group, in accordance with Rule 13d-1(b)(1)(ii)(J).

This statement is being filed jointly by the Reporting Persons, although each of
them expressly disaffirms membership in any group under Rule 13d-5 of the
Exchange Act.

ITEM 4.    OWNERSHIP.

           (a) Amount Beneficially Owned:

Donald L. Morton, M.D. is the grantor and sole current beneficiary of the Donald
L. Morton Family Trust, a revocable trust, which is the record holder of
4,434,629 shares. The Donald L. Morton Family Trust is the sole stockholder of
OncoVac, Inc., which is the record holder of 98,814 shares. Donald L. Morton,
through such entities, may be deemed the beneficial owner of 4,533,443 shares of
the common stock of the Issuer. Donald L. Morton is the grantor of the Donald L.
Morton, M.D., Grantor Retained Annuity Trust, which is the record holder of
648,039 shares. By virtue of the relationships among these shareholders, Donald
L. Morton may by deemed to own beneficially all of the shares.

Each of the reporting persons expressly disclaims beneficial ownership, except
to the extent of its pecuniary interest therein, if any, and except in the case
of Donald L. Morton, M.D. and the Donald L. Morton Family Trust as to the shares
held of record by the Donald L. Morton Family Trust and OncoVac, Inc.


                                       7


      (b)  Percent of Class:

           Name                            No. of Shares      Percent of Class

           Donald L. Morton, M.D.            5,181,482            18.6%

           Donald L. Morton Family Trust     5,181,482            18.6%

           OncoVac, Inc.                        98,814              .4%

           Donald L. Morton, M.D. GRAT         719,849             2.3%

The foregoing percentages are based upon 26,675,374 shares outstanding, as
reflected on the Issuer's Form 10Q for the Quarter ended September 30, 2003,
unless based on more recent information obtained directly from the Issuer (with
beneficial ownership determined as set forth in Rule 13d-3 under the Exchange
Act, but with beneficial ownership being expressly disclaimed).

               (c)    Number of shares as to which such person has:

                      (i)    Sole power to vote or to direct the vote:

                             Donald L. Morton                    4,533,443

                             Donald L. Morton Family Trust       4,533,443

                             OncoVac, Inc.                          98,814

                             Donald L. Morton, M.D. Grantor
                             Retained Annuity Trust                648,039

                      (ii)   Shared power to vote or to direct the vote:

                             Donald L. Morton and Donald L. Morton 
                             Family Trust                           648,039 (1)

                      (iii)  Sole power to dispose or to direct the disposition 
                             of:

                             Donald L. Morton                     4,533,443

                             Donald L. Morton Family Trust        4,533,443

                             OncoVac, Inc.                           98,814

                             Donald L. Morton, M.D. Grantor 
                             Retained Annuity Trust                 648,039

                      (iv)   Shared power to dispose or to direct the 
                             disposition of:

                             Donald L. Morton and Donald 
                             L. Morton Family Trust                 648,039 (1)


                                       8


ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.

               If this statement is being filed to report the fact that as of
the date hereof the reporting person has ceased to be the beneficial owner of
more than five percent of the class of securities, check the following: [ ]

ITEM 6.    OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.

               Not Applicable

ITEM 7.    IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
           THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY OR
           CONTROL PERSON.

               Not Applicable

ITEM 8.    IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.

               Not Applicable

ITEM 9.    NOTICE OF DISSOLUTION OF GROUP.

               Not Applicable. The reporting persons expressly disclaim
               membership in a "group" as defined in Rule 13d-1(b)(ii)(J).

ITEM 10.   CERTIFICATIONS.

               By signing below, the undersigned certify that, to the best of
their knowledge and belief, the securities referred to above were not acquired
and are not held for the purpose of or with the effect of changing or
influencing the control of the issuer of the securities and were not acquired
and are not held in connection with or as a participant in any transaction
having that purpose or effect.

--------------

(1) Shares owned by Donald L. Morton, M.D., Grantor Retained Annuity Trust,
    dated September 6, 2002, for which the Reporting Person disclaims beneficial
    ownership.


                                       9


                                    SIGNATURE

        After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Dated:  February 10, 2005                   By: /s/ DONALD L. MORTON, M.D.
                                               --------------------------
                                                 Donald L. Morton, M.D.

                                           DONALD L. MORTON FAMILY TRUST


                                           /s/ DONALD L. MORTON, M.D.
                                           --------------------------
                                           By:  Donald L. Morton, M.D.
                                           Title:  Trustee

                                           ONCOVAC, INC.,
                                           A California corporation

                                           /s/ DONALD L. MORTON, M.D.
                                           --------------------------
                                           By:  Donald L. Morton, M.D.
                                           Title:  President

                                           DONALD L. MORTON, M.D., GRANTOR
                                           RETAINED ANNUITY TRUST

                                           /s/ DONALD L. MORTON, M.D.
                                           --------------------------
                                           By:  Donald L. Morton, M.D.
                                           Title:  Trustee


                                       10