BUZZ-Scancell: drug problem spurs worst day in 3 yrs
** Drug developer Scancell's shares down 27 pct, worst day in nearly three years, after suspends dosing in a cancer clinical trial because of quality problems with its immunotherapy treatment SCIB1
** Co says current supplies of drug no longer meet original specification and are no longer suitable for further use
** The suspension affects 8 patients in a clinical trial, co says
** Shares (Berlin: DI6.BE - news) at 6-mth lows, with more than 10x their 30-day avg vols gone through in the first half hour of trade (venkateshasoumithri.mamidipudi.thomsonreuters.com@reuters.net)