-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 EBQS8GYAsyy66sOOu41J7vCTtwl/b6L7CwexO0AoAfZJsH/ax1EZZywa0pnIYKtG
 Ex5hs3IzaVDLUv0+UOuQjw==

<SEC-DOCUMENT>9999999997-09-003101.txt : 20090205
<SEC-HEADER>9999999997-09-003101.hdr.sgml : 20090205
<ACCEPTANCE-DATETIME>20090205093219
<PAPER>
ACCESSION NUMBER:		9999999997-09-003101
CONFORMED SUBMISSION TYPE:	REGDEX/A
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
FILED AS OF DATE:		20090129
DATE AS OF CHANGE:		20090205
EFFECTIVENESS DATE:		20090129

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Baker Brothers Life Sciences LP
		CENTRAL INDEX KEY:			0001363364
		IRS NUMBER:				000000000

	FILING VALUES:
		FORM TYPE:		REGDEX/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	021-89864
		FILM NUMBER:		09001789

	BUSINESS ADDRESS:	
		STREET 1:		667 MADISON AVE 17TH
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10021

	MAIL ADDRESS:	
		STREET 1:		667 MADISON AVE 17TH
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10021
</SEC-HEADER>
<DOCUMENT>
<TYPE>REGDEX/A
<SEQUENCE>1
<FILENAME>9999999997-09-003101.paper
<DESCRIPTION>AUTO-GENERATED PAPER DOCUMENT
<TEXT>
This document was generated as part of a paper submission.
Please reference the Document Control Number 09001789 for access to the original document.
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----