Net Asset Value(s)

Intl. Biotechnology Trust PLC 29 September 2005 FOR IMMEDIATE RELEASE 28-Sep-05 To : The London Stock Exchange International Biotechnology Trust plc The Board of International Biotechnology Trust plc announces that the unaudited net asset value per share as at Tuesday 27th September 2005 was 120.54 pence. This incorporates the IPO of Sunesis Pharmaceuticals Inc.(Ticker -SNSS) on 27 September 2005 at $7 a share. At $6.50 a share (the closing price of the first day of trading), Sunesis' valuation represents a reduction in the NAV of £0.8m or 1.3% of NAV when compared to the NAV reported to the market on 20 September 2005. By Order of the Board Schroder Investment Management Limited Secretaries Enquiries : International Biotechnology Trust plc Anthony Carney 020 7658 2548 This information is provided by RNS The company news service from the London Stock Exchange
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