KalVis­ta's di­a­bet­ic mac­u­lar ede­ma da­ta falls short — will Mer­ck walk away?

Mer­ck’s 2017 bet on KalVista Phar­ma­ceu­ti­cals may have soured, af­ter the UK/US-based biotech’s lead drug failed a mid-stage study in pa­tients with di­a­bet­ic mac­u­lar ede­ma (DME).

Two dos­es of the in­trav­it­re­al in­jec­tion, KVD001, were test­ed against a place­bo in a 129-pa­tient tri­al. Pa­tients who con­tin­ued to ex­pe­ri­ence sig­nif­i­cant in­flam­ma­tion and di­min­ished vi­su­al acu­ity, de­spite an­ti-VEGF ther­a­py, were re­cruit­ed to the tri­al. Typ­i­cal­ly pa­tients with DME — the most fre­quent cause of vi­sion loss re­lat­ed to di­a­betes — are treat­ed with an­ti-VEGF ther­a­pies such as Re­gen­eron’s flag­ship Eylea or Roche’s Avastin and Lu­cen­tis.

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