caused by different mutations of different genes and discussed the clinical role and significance of genetic testing. Original data regarding the natural history and prognosis of symptomatic patients were obtained in the Italian multicentric study (Cecchi, Lazzeroni), while Baroldi discussed the clinico-pathologic spectrum of the disease in severely symptomatic patients treated with heart transplantation. Sudden death in the young (Basso), the identification and management of high risk patients (Elliott), the clinical importance and the problems of detec­ tion of ischemia (Camici) were deeply discussed as well as the indications and results of different types of treatment: medical, surgical, DDD pacing (Spirito, Betocchi, Schoendube).