<DOCUMENT>
<TYPE>EX-99
<SEQUENCE>2
<FILENAME>exh99.txt
<TEXT>



                       INFORMATION REGARDING JOINT FILERS



Designated Filer of Form 4:                                 Joseph Edelman

Date of Earliest Transaction Required to be Reported:       November 18, 2008

Issuer Name and Ticker Symbol: XTL BIOPHARMACEUTICALS LTD. (XTLB)

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

Address:   Perceptive Advisors LLC
           499 Park Avenue, 25th Floor
           New York, NY 10022

Signatures:

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


PERCEPTIVE LIFE SCIENCE MASTER FUND LTD.

By: Perceptive Advisors LLC, its investment manager


By:_______________________________
   Joseph Edelman, managing member



Perceptive Advisors LLC


___________________________________
Joseph Edelman, managing member
</TEXT>
</DOCUMENT>
