BUZZ-Specialty drugmaker shares slide as debate nears
** Shares of specialty drugmakers slide to session lows in Monday afternoon trading, ahead of U.S. presidential debate later in evening
** Mallinckrodt down 7 pct, Endo International down 6.3 pct, U.S.-listed shares of Valeant down 6.5 pct against 1.4 pct decline for NYSE Arca Pharmaceutical index
** Specialty pharma companies have been in focus amid rising concerns about drug pricing, a topic that Democratic U.S. presidential candidate Hillary Clinton has addressed
** Drug prices have drawn fresh scrutiny in recent weeks due to Mylan's increases for its EpiPen emergency allergy treatment
** YTD, Valeant down 75 pct, Endo down 64 pct, Mallinckrodt down 4.8 pct, against 4.4 pct decline for DRG
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