Spanish founder variant in MYBPC3: implications of diagnostic criteria, clinical phenotype, and prognosis.
INTRODUCTION AND OBJECTIVES MYBPC3 is the most frequently mutated gene in hypertrophic cardiomyopathy (HCM). This study presents the clinical phenotype of a founder variant in MYBPC3, p.Arg891Alafs*160, present in 47 families from southern Spain, and compares it with other described founder truncating variants in MYBPC...