Fibrillin gene (FBN1) mutations in Japanese patients with Marfan syndrome
Chikumi, H.; Yamamoto, T.; Ohta, Y.; Nanba, E.; Nagata, K.; Ninomiya, H.; Narasaki, K.; Katoh, T.; Hisatome, I.; Ono, K.; Tanaka, Y.; Kuroda, H.; Ohgi, S.
Journal of Human Genetics 45(2): 115-118
2000
ISSN/ISBN: 1434-5161 PMID: 10721679 DOI: 10.1007/s100380050027
Accession: 010663023
Marfan syndrome (MFS; MIM #154700) is a connective tissue disorder characterized by cardiovascular, skeletal, and ocular abnormalities. The fibrillin-1 gene (FBN1; MIM no. 134797) on chromosome 15 was revealed to be the cause of Marfan syndrome. To date over 137 types of FBN1 mutations have been reported. In this study, two novel mutations and a recurrent de-novo mutation were identified in patients with MFS by means of single-strand conformational polymorphism (SSCP) analysis. The two novel mutations are a 4-bp deletion at nucleotide 2820-2823 and a G-to-T transversion at nucleotide 1421 (C474F), located on exon 23 and exon 11, respectively. A previously reported mutation at the splicing donor site of intron 2 (IVS2 G + 1A), which is predicted to cause exon skipping, was identified in a sporadic patient with classical MFS.