Figure 2From: Safety and efficacy of vemurafenib in end stage renal failure Change in QTc interval during treatment with vemurafenib. The QTc interval was normal at baseline and was high in November 2012. The QTc interval then returned to normal in December 2012. It also increased above 500 msec in January 2013, and has since decreased to <500 msec.Back to article page