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                                                                    EXHIBIT 23.2

                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


         As independent public accountants, we hereby consent to the
incorporation by reference in this registration statement of our report dated
February 4, 2000 included in the Registration Statement on Form S-1 of Lexicon
Genetics Incorporated (No. 333-96469), originally filed with the Securities and
Exchange Commission on February 9, 2000, and to all references to our Firm
included in this registration statement.


ARTHUR ANDERSEN LLP



Houston, Texas
July 12, 2000