“…Multiple factors may contribute to an underestimation of the prevalence of the disease. This is because the phenotype becomes more evident with increasing age and many of the external manifestations are common in the general population (MARX et al, 2017). It must be taken into consideration, that this disorder sporadically discerns a dominant trait in about 25% of cases, resulting from new mutations, and that the predominance lies in the mutation of the FBN1 gene, which encodes the matrix protein fibrillin-1 (AALBERTS et al al., 2014).…”