Perceptive Advisors LLC, et al. · 4 · Biosante Pharmaceuticals Inc · For 12/2/04 · EX-99.1

Filed On 12/6/04 4:29pm ET   ·   SEC File 1-31812   ·   Accession Number 1193805-4-1896

Statement of Change in Beneficial Ownership of Securities   ·   Form 4
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 4           Statement of Change in Beneficial Ownership of       XML     17K 
                          Securities                                             
 2: EX-99.1     Joint Filer Information                                1      7K 

EX-99.1   ·   Joint Filer Information

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                                                                    Exhibit 99.1

 Joint Filer Information

Names: Perceptive Life Sciences Master Fund Ltd. and Perceptive Advisors LLC    

IRS I.D. No.: 980338943 (Master Fund)                      52-2291758 (Advisors)

Address: c/o First New York Securities, LLC                                     
850 Third Avenue, 8th Floor                                   
New York, New York 10022                                      

Designated Filer:                           Joseph Edelman                      

Issuer and Ticker Symbol:                   Biosante Pharmaceuticals, Inc. (BPA)

Date of Earliest Transaction (Month/Day/Year) December 2, 2004                  

The undersigned, Perceptive Life Sciences Master Fund Ltd. and Perceptive       
Advisors LLC are jointly filing the attached Statement of Changes in Beneficial 
Ownership on Form 4 with Joseph Edelman with respect to the beneficial ownership
of securities of Biosante Pharmaceuticals, Inc.                                 

PERCEPTIVE LIFE SCIENCES                     PERCEPTIVE ADVISORS LLC            
MASTER FUND LTD.                                                                

By: Perceptive Advisors LLC, its                                                
investment advisor                                                

By: /s/ Andrew Sankin,                       By: /s/ Andrew Sankin,             
as attorney in fact                          as attorney in fact
----------------------                       ----------------------     
Name:  Joseph Edelman                        Name:  Joseph Edelman              
Title: Managing Member                       Title: Managing Member             

Dates Referenced Herein   and   Documents Incorporated By Reference

This 4 Filing		Date		Other Filings
For The Period Ended		12/2/04		4
Filed On / Filed As Of		12/6/04
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