LAMP2 and arrhythmogenic cardiomyopathy with wooly hair and keratoderma: Additionally, eight were syndromic patients: four with Noonan syndrome (PTPN11 and biallelic LZTR1), two with Danon disease (LAMP2), two with Carvajal syndrome (DSP), and one with atypical glycogen storage disease (PRKAG2).