This clinical study was being conducted at University of Minnesota where the ketogenic diet was combined with a medicine called miglustat/Zavesca.  Unfortunately, this regimen is not considered a cure and was not deemed effective.  The regimen may only slow the course of GM1 for certain patients at best.  It is thought to possibly be effective for certain genetic mutations or only juvenile/type 2b patients, those with residual enzyme activity.  Please refer to the description on the clinical trials web site.