CERTIFICATION PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
                             18 U.S.C. SECTION 1350

                  In connection with the Quarterly Report of Alkermes Clinical
Partners, L.P. (the "Partnership") on Form 10-Q for the period ending March 31,
2003 as filed with the Securities and Exchange Commission on the date hereof
(the "Report"), I, James M. Frates, Vice President and Chief Financial Officer
of Alkermes Development Corporation II, General Partner of the Partnership,
certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002,18 U.S.C.
Section 1350 that:

         1.       The Report fully complies with the requirements of section
13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

         2.       The information contained in the Report fairly presents, in
all material respects, the financial condition and result of operations of the
Partnership.

                                      /s/ James M. Frates
                                      --------------------------
                                      James M. Frates
                                      Vice President and Chief Financial Officer
                                      of Alkermes Development Corporation II,
                                      General Partner of Alkermes Clinical
                                      Partners, L.P.
                                      May 14, 2003