THE BANK OF NEW
YORK
 NEW YORKS FIRST BANK - FOUNDED 1784 BY
ALEXANDER HAMILTON

101 BARCLAY STREET, NEW YORK, N.Y. 10286
AMERICAN DEPOSITARY RECEIPTS

December 21, 2005

SECURITIES & EXCHANGE COMMISSION
450 Fifth Street, NW
Washington, DC 20549

Attn.: Document Control



RE:	American Depositary Shares evidenced
by the American Depositary Receipts
each representing Five Ordinary Shares
of Amrad Corporation Limited
 (Form F-6 File No. 333-9528)



Ladies and Gentlemen:

Pursuant to Rule 424(b)(3) under the Securities
Act of 1933, as amended, on behalf of The Bank
of New York, as Depositary for securities
against which American Depositary Receipts are
to be issued, we attach a copy of the new
prospectus (Prospectus) reflecting the change in
name to Zenyth Therapeutics Limited of five (5)
ordinary shares represented by one American
Depositary Share (the Ratio).

As required by Rule 424(e), the upper right hand
corner of the Prospectus cover page has a
reference to Rule 424(b)(3) and to the file
number of the registration statement to which
the Prospectus relates.

Pursuant to Section III B of the General
Instructions to the Form F-6 Registration
Statement, the Prospectus consists of the ADR
certificate with revised name change for Amrad
Corporation Limited.

The Prospectus has been revised to reflect the
new name from Amrad Corporation Limited to
Zenyth Therapeutics Limited.

 EFFECTIVE December 9, 2005, THE
COMPANYS NAME HAS CHANGED
FROM AMRAD CORPORATION
LIMITED TO ZENYTH
THERAPEUTICS LIMITED.

Please contact me with any questions or
comments at 212 815-2276.


Violet Pagan
Assistant Vice President
The Bank of New York - ADR Division



Encl.

CC: Paul Dudek, Esq. (Office of International
Corporate Finance)



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