** Shares of Starpharma Holdings SPL.AX slump as much as
13.8% to A$0.125, set to see their worst day since Aug 1, if
losses hold
** The pharmaceutical firm says the United States Food and
Drug Administration (USFDA) requires more clinical efficacy data
to approve co's bacterial vaginosis therapy product VivaGel BV
** Adds that it does not plan to pursue additional clinical
studies for VivaGel BV at this time
** Shares hit lowest since Dec 6
** Stock has fallen ~14.7% this year, as of last close
(Reporting by Archishma Iyer in Bengaluru)
((Archishma.Iyer@thomsonreuters.com;))