SECURITIES AND EXCHANGE COMMISSION
                               Washington, D.C. 20549


                                    SCHEDULE 13G

                      Under the Securities Exchange Act of 1934


                                 (Amendment No. 1)*



                                      ICON plc

                                  (Name of Issuer)

              American Depositary Shares, representing Ordinary Shares

                           (Title of Class of Securities)

                                     45103T107

                                   (CUSIP Number)

                                 December 31, 2001

              (Date of Event Which Requires Filing of This Statement)


     Check the appropriate box to designate the rule pursuant to which this
     Schedule is filed:
     [X] Rule 13d-1(b)
     [ ] Rule 13d-1(c)
     [ ] Rule 13d-1(d)


     *The remainder of this cover page shall be filled out for a reporting
     person's initial filing on this form with respect to the subject class of
     securities, and for any subsequent amendment containing information which
     would alter the disclosures provided in a prior cover page.

     The information required in the remainder of this cover page shall not be
     deemed to be "filed" for the purpose of Section 18 of the Securities
     Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of
     that section of the Act but shall be subject to all other provisions of the
     Act (however, see the Notes).












     CUSIP: 45103T107                                                Page 1 of 5
     







      1   NAMES OF REPORTING PERSONS
          I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
          Capital Group International, Inc.
          95-4154357

      2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE
          INSTRUCTIONS)                                                 (a)

                                                                         (b)

      3   SEC USE ONLY




      4   CITIZENSHIP OR PLACE OF ORGANIZATION

          California


                   5   SOLE VOTING POWER

                       231,800


                   6   SHARED VOTING POWER
      NUMBER OF
        SHARES
                       NONE
     BENEFICIALL
      Y OWNED BY
                   7   SOLE DISPOSITIVE POWER
         EACH
      REPORTING
                       235,100
        PERSON
        WITH:

                   8   SHARED DISPOSITIVE POWER

                       NONE


      9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

          235,100   Beneficial ownership disclaimed pursuant to Rule 13d-4


      10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
          (SEE INSTRUCTIONS)



      11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

          2.1%


      12  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

          HC






     CUSIP: 45103T107                                                Page 2 of 5
     


                         SECURITIES AND EXCHANGE COMMISSION
                                Washington, DC 20549

                                    Schedule 13G
                      Under the Securities Exchange Act of 1934

     Amendment No. 1

     Item 1(a)   Name of issuer:
            ICON plc

     Item 1(b)   Address of issuer's principal executive offices:
            South County Business Park
            Leopardstown
            Dublin 18, Ireland

     Item 2(a)   Name of person(s) filing:
            Capital Group International, Inc.

     Item 2(b)   Address or principal business office or, if none, residence:
            11100 Santa Monica Blvd.
            Los Angeles, CA  90025

     Item 2(c)   Citizenship:   N/A

     Item 2(d)   Title of class of securities:
            American Depositary Shares, representing Ordinary Shares

     Item 2(e)   CUSIP No.:
            45103T107

     Item 3   If this statement is filed pursuant to sections 240.13d-1(b) or
            240.13d-2(b) or (c), check whether the person filings is a:
            (g)   [X]   A parent holding company or control person in
                 accordance with section 240.13d-1(b)(1)(ii)(G).

     Item 4   Ownership

            Provide the following information regarding the aggregate number
            and percentage of the class of securities of the issuer identified
            in Item 1.

            See page 2

            (a)    Amount beneficially owned:
            (b)    Percent of class:
            (c)    Number of shares as to which the person has:
            (i)    Sole power to vote or to direct the vote:
            (ii)   Shared power to vote or to direct the vote:
            (iii)  Sole power to dispose or to direct the disposition of:
            (iv)   Shared power to dispose or to direct the disposition of:










     CUSIP: 45103T107                                                Page 3 of 5
     






            Capital Group International, Inc. is the parent holding company of
            a group of investment management companies that hold investment
            power and, in some cases, voting power over the securities reported
            in this Schedule 13G.  The investment management companies, which
            include a "bank" as defined in Section 3(a)6 of the Securities
            Exchange Act of 1934 (the "Act") and several investment advisers
            registered under Section 203 of the Investment Advisers Act of
            1940, provide investment advisory and management services for their
            respective clients which include registered investment companies
            and institutional accounts.  Capital Group International, Inc. does
            not have investment power or voting power over any of the
            securities reported herein; however, Capital Group International,
            Inc. may be deemed to "beneficially own" such securities by virtue
            of Rule 13d-3 under the Act.

            All of the shares reported are held in the form of American
            Depositary Shares, which each represent one Ordinary Share.


     Item 5   Ownership of 5 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
            5 percent of the class of securities, check the following: [X]

     Item 6   Ownership of More than 5% on Behalf of Another Person: N/A

     Item 7   Identification and Classification of the Subsidiary Which Acquired
            the Security Being Reported on By the Parent Holding Company or
            Control Person.

            1.
               Capital Guardian Trust Company is a bank as defined in Section
               3(a)(6) of the Act and a wholly owned subsidiary of Capital Group
               International, Inc.

            2.
               Capital International Research and Management, Inc. dba Capital
               International, Inc. is an investment adviser registered under
               Section 203 of the Investment Advisers Act of 1940 and is a
               wholly owned subsidiary of Capital Group International, Inc.

     Item 8   Identification and Classification of Members of the Group:  N/A

     Item 9   Notice of Dissolution of Group:  N/A

     Item 10   Certification

            By signing below, I certify that, to the best of my knowledge and
            belief, the securities referred to above were acquired and are held
            in the ordinary course of business and 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.




     CUSIP: 45103T107                                                Page 4 of 5

     






        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.



             Date:          February 12, 2002


             Signature:     *David I. Fisher

             Name/Title:    David I. Fisher, Chairman

                            Capital Group International, Inc.




             *By    /s/ Kenneth R. Gorvetzian

                    Kenneth R. Gorvetzian
                    Attorney-in-fact

                    Signed pursuant to a Power of Attorney dated December 19,
                    2000 included as an Exhibit to Schedule 13G filed with the
                    Securities and Exchange Commission by Capital Group
                    International, Inc. on February 9, 2001 with respect to
                    Abitibi-Consolidated Inc






























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