<Page>

                                                                   EXHIBIT 23.2

                       CONSENT OF INDEPENDENT ACCOUNTANTS


We hereby consent to the use in this Registration Statement on Form S-1 of our
report dated August 22, 2003 relating to the financial statements of TolerRx,
Inc., which appears in such Registration Statement. We also consent to the
reference to us under the headings "Experts" in such Registration Statement.

/s/ PricewaterhouseCoopers LLP

Boston, Massachusetts
August 22, 2003