Portfolio Update - Replacemen

RNS Number : 7504Q

Intl. Biotechnology Trust PLC

17 April 2009

INTERNATIONAL BIOTECHNOLOGY TRUST PLC (the 'Company')

Amending announcement

The Company advises that the following replaces the Portfolio Update announcement released erroneously on 16 April 2009 at 15.02 pm under RNS Number 6986Q.

Due to an administrative error, Gilead Sciences and Celgene appeared in the wrong order within the Top Ten Holdings. The heading of this table should have also been stated as Ten Largest Quoted Investments. All other details remain the same and the full corrected version of the announcement is shown below:

Portfolio update as at 31 March 2009

Total Net Asset Value ('NAV')

£92.3 million

Ten Largest Quoted Investments

Company Name	% NAV
Micromet	5.5
Celgene	5.3
Gilead Sciences	5.1
Amgen	4.6
Alexion Pharmaceuticals	3.4
Affymax	2.8
Wright Medical	2.8
Celera	2.7
OSI Pharmaceuticals	2.6
Halozyme Therapeutics	2.6
	-----------
Total	37.4