** Shares of drug developer Pasithea Therapeutics KTTA.O
rise 64.3% to $6.31 premarket
** KTTA says its experimental cancer drug, PAS-004, was safe
and well tolerated in an early-stage study
** Says one heavily pre-treated patient with stage three
colon cancer showed prolonged stable disease
** Co is testing the drug in certain cancer patients whose
tumor has an RAF mutation
** Says no treatment-related adverse events were observed
and no drug-related dose interruptions or discontinuations
** Co expects to provide additional trial updates on a
periodic basis as the trial progresses
** Up to last close, stock down 48% YTD
(Reporting by Sneha S K)
((Sneha.SK@thomsonreuters.com;))