A 35-year-old man has shortness of breath during exercise, he periodically loses consciousness. Auscultation: systolic murmur in the III intercostal space to the left of sternum. Ultrasound of the heart revealed: symmetrical LV hypertrophy, its diastolic dysfunction with some reduction of the cavity. There is anterior systolic movement anterior mitral valve leaflet. What is the pathology of the patient?