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<title>Form 8-K
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<font face="Times New Roman, Times, Serif" size=5><b>UNITED STATES<br>
SECURITIES AND EXCHANGE COMMISSION<br></b></font>
<font face="Times New Roman, Times, Serif" size=2>Washington, DC 20549</font>
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<font face="Times New Roman, Times, Serif" size=5><b>FORM 8-K<br>
<br></b></font></p>
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<font face="Times New Roman, Times, Serif" size=5><b>CURRENT REPORT</b></font><br><font face="Times New Roman, Times, Serif" size=2><b>Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934<br></b></font></p>
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<font face="Times New Roman, Times, Serif" size=2>Date of Report&nbsp;&nbsp;(Date of earliest event reported):&nbsp;&nbsp;&nbsp;&nbsp;April 15, 2003</font><br></p>
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<font face="Times New Roman, Times, Serif" size=5><b>MILLENNIUM PHARMACEUTICALS, INC.</b></font><br><font face="Times New Roman, Times, Serif" size=2>(Exact name of registrant as specified in its charter)</font></p>
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<td width=33% align=center valign=top><font face="Times New Roman, Times, Serif" size=2><b>Delaware</b></font></td>
<td width=34% align=center valign=top><font face="Times New Roman, Times, Serif" size=2><b>0-28494</b></font></td>
<td width=33% align=center valign=top><font face="Times New Roman, Times, Serif" size=2><b>04-3177038</b></font></td>
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<td width=33% align=center valign=top><font face="Times New Roman, Times, Serif" size=2>(State or other jurisdiction<br>of incorporation)</font></td>
<td width=34% align=center valign=top><font face="Times New Roman, Times, Serif" size=2>(Commission file number)</font></td>
<td width=33% align=center valign=top><font face="Times New Roman, Times, Serif" size=2>(IRS&nbsp;Employer<br>Identification&nbsp;No.)</font></td>
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<p align=center><font face="Times New Roman, Times, Serif" size=2><b>75 Sidney Street<br>Cambridge, Massachusetts 02139</b><br>
(Address of principal executive offices)&nbsp;(zip code)</font></p>

<p align=center><font face="Times New Roman, Times, Serif" size=2><b>(617)&nbsp;&nbsp;679-7000<br></b>
(Registrant's telephone number, including area code)</font></p>

<p align=center><font face="Times New Roman, Times, Serif" size=2><b>Not applicable<br></b>
(Former name or former address if changed since last report)</font></p>



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<p align=left><font face="Times New Roman, Times, Serif" size=2><b>Item&nbsp;&nbsp;&nbsp;&nbsp;7.&nbsp;&nbsp;&nbsp;&nbsp;Financial
Statements and Exhibits.</b></font></p>

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<td align=left width=20%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td align=left width=10%><font face="Times New Roman, Times, Serif" size=2>(c)</font></td>
<td align=left width=70%><font face="Times New Roman, Times, Serif" size=2>Exhibits</font></td>
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<td align=left width=20%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=10%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td align=left width=70%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
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<td width=20%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=10%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=70%><font face="Times New Roman, Times, Serif" size=2>See Exhibit Index attached to this current report on Form 8-K.</font></td>
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<td align=left width=20%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=10%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td align=left width=70%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
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<p align=left><font face="Times New Roman, Times, Serif" size=2><b>Item&nbsp;&nbsp;&nbsp;&nbsp;9.&nbsp;&nbsp;&nbsp;&nbsp;Regulation FD Disclosure.</b></font></p>

<p align=left><font face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following information is furnished pursuant to Item 12, "Disclosure of Results of Operations and Financial
Condition."</font></p>

<p align=left><font face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On April 15, 2003, Millennium Pharmaceuticals, Inc. issued a press release to report the company's financial results for the quarter ended March 31, 2003. A copy of the press release is
attached to this current report on Form 8-K as Exhibit 99.1.</font></p>

<p align=left><font face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In accordance with the procedural guidance in SEC Release No. 33-8216, the information in this Form 8-K and the Exhibit attached
to this Form 8-K are being furnished under "Item 9. Regulation FD Disclosure" rather than under "Item 12. Disclosure of Results of Operations
and Financial Condition."  The information shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of
1934 (the "Exchange Act") or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference
in any filing under the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference in such a
filing.</font></p>


<p align=center><font face="Times New Roman, Times, Serif" size=2>2</font></p>
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<p align=center><FONT FACE="Times New Roman, Times, Serif" SIZE=2><b><a name="sig">SIGNATURES</a></b></font></p>

<p><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its
behalf by the undersigned hereunto duly authorized.</font></p>




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<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td colspan=2><font face="Times New Roman, Times, Serif" size=2>MILLENNIUM PHARMACEUTICALS, INC.<br>(Registrant)<br><br></font></td>
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<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Date: April 15, 2003&nbsp;</font></td>
<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=4%><font face="Times New Roman, Times, Serif" size=2>By&nbsp;</font></td>
<td width=36% align=left><font face="Times New Roman, Times, Serif" size=2>/s/&nbsp;&nbsp;JOHN B. DOUGLAS III</font></td>
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<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=4%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=36% align=left><font face="Times New Roman, Times, Serif" size=2></font><hr noshade></td>
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<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=4%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=36% align=left><font face="Times New Roman, Times, Serif" size=2>John B. Douglas III</font></td>
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<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=4%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=36% align=left><font face="Times New Roman, Times, Serif" size=2>Senior Vice President and General Counsel</font></td>
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<p align=center><font face="Times New Roman, Times, Serif" size=2>3</font></p>
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<p><font face="Times New Roman, Times, Serif" size=2><b><a name="index">EXHIBIT INDEX</a></b></font></p>

<p><font face="Times New Roman, Times, Serif" size=2>The following exhibit is filed as part of this current report on Form 8-K:</font></p>

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<th width=9% align=center colspan=2><font face="Times New Roman, Times, Serif" size=2>Exhibit No.<br></font><hr noshade></th>
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<th width=68% align=center><font face="Times New Roman, Times, Serif" size=2>Description<br></font><hr noshade></th>
<th width=20% align=left><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></th>
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<td width=3%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=6%><font face="Times New Roman, Times, Serif" size=2>99.1</font></td>
<td width=3%>&nbsp;</td>
<td width=68% align=left><font face="Times New Roman, Times, Serif" size=2>Press Release of Millennium Pharmaceuticals, Inc. dated April 15, 2003
</font></td>
<td width=20% align=left><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
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<p align=center><font face="Times New Roman, Times, Serif" size=2>4</font></p>
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Form 8-K
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report  (Date of earliest event reported):    April 15, 2003
MILLENNIUM PHARMACEUTICALS, INC.
(Exact name of registrant as specified in its charter)
Delaware
0-28494
04-3177038
(State or other jurisdiction
of incorporation)
(Commission file number)
(IRS Employer
Identification No.)
75 Sidney Street
Cambridge, Massachusetts 02139
(Address of principal executive offices) (zip code)
(617)  679-7000
(Registrant's telephone number, including area code)
Not applicable
(Former name or former address if changed since last report)
Item    7.    Financial
Statements and Exhibits.
(c)
Exhibits
See Exhibit Index attached to this current report on Form 8-K.
Item    9.    Regulation FD Disclosure.
The following information is furnished pursuant to Item 12, "Disclosure of Results of Operations and Financial
Condition."
On April 15, 2003, Millennium Pharmaceuticals, Inc. issued a press release to report the company's financial results for the quarter ended March 31, 2003. A copy of the press release is
attached to this current report on Form 8-K as Exhibit 99.1.
In accordance with the procedural guidance in SEC Release No. 33-8216, the information in this Form 8-K and the Exhibit attached
to this Form 8-K are being furnished under "Item 9. Regulation FD Disclosure" rather than under "Item 12. Disclosure of Results of Operations
and Financial Condition."  The information shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of
1934 (the "Exchange Act") or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference
in any filing under the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference in such a
filing.
2
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its
behalf by the undersigned hereunto duly authorized.
MILLENNIUM PHARMACEUTICALS, INC.
(Registrant)
Date: April 15, 2003
By
/s/  JOHN B. DOUGLAS III
John B. Douglas III
Senior Vice President and General Counsel
3
EXHIBIT INDEX
The following exhibit is filed as part of this current report on Form 8-K:
Exhibit No.
Description
99.1
Press Release of Millennium Pharmaceuticals, Inc. dated April 15, 2003
4