** Shares of Eiger BioPharmaceuticals Inc EIGR.O slump
74.5% to 98 cents, top pct loser across U.S. stock exchanges
** The therapy developer reports two deaths in end-stage
study of its therapy lonafarnib for Hepatitis Delta Virus (HDV)
** One patient treated with peginterferon alfa, which is the
medication used to treat hepatitis C and hepatitis B, died due
to decompensated cirrhosis that was attributed to the therapy -
EIGR
** Cirrhosis causes acute deterioration in liver function
** Co says the other death in the oral therapy was deemed
"unrelated" to the study
** Lonafarnib is being studied in two regimens - in an oral
therapy with ritonavir and a combination therapy with
peginterferon alfa - in patients with chronic HDV, a serious
liver disease caused by the virus
** In the lonafarnib treatment groups, 8% and 14% of
patients, respectively, reported serious treatment-emergent
gastrointestinal adverse events, says co
** At least 9% and 8% of patients discontinued treatment
from the lonafarnib oral and combination therapy arms,
respectively
** Including session's losses, stock down ~80% YTD
(Reporting by Sriparna Roy)
((Sriparna.Roy@thomsonreuters.com;))