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A complex genomic abnormality found in a patient with antithrombin deficiency and autoimmune disease-like symptoms.
Kato, Io; Takagi, Yuki; Ando, Yumi; Nakamura, Yuki; Murata, Moe; Takagi, Akira; Murate, Takashi; Matsushita, Tadashi; Nakashima, Tadaaki; Kojima, Tetsuhito.
Affiliation
  • Kato I; Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, 1-1-20 Daiko-Minami, Higashi-ku, Nagoya, 461-8673, Japan.
Int J Hematol ; 100(2): 200-5, 2014 Aug.
Article in En | MEDLINE | ID: mdl-24889358
ABSTRACT
Hereditary antithrombin (AT) deficiency is an autosomal dominant thrombophilic disorder caused by SERPINC1 abnormality. In the present study, we analyzed SERPINC1 in a Japanese patient with AT deficiency and autoimmune disease-like symptoms. Direct sequencing and multiplex ligation-dependent probe amplification revealed that the patient was hemizygous for the entire SERPINC1 deletion. Single nucleotide polymorphism genotyping, gene dose measurement, and long-range polymerase chain reaction (PCR) followed by mapping PCR and direct sequencing of the long-range PCR products revealed that the patient had an approximately 111-kb gene deletion from exon 2 of ZBTB37 to intron 5 of RC3H1, including the entire SERPINC1 in chromosome 1. We also found a 7-bp insertion of an unknown origin in the breakpoint, which may be a combination of three parts with a few base-pair microhomologies, resulting from a replication-based process known as 'fork stalling and template switching'. Because RC3H1, which encodes the protein roquin is involved in the repression of self-immune responses, the autoimmune disease-like symptoms of the patient may have resulted from this gene defect. In conclusion, we identified an entire SERPINC1 deletion together with a large deletion of RC3H1 in an AT-deficient patient with autoimmune disease-like symptoms.
Subject(s)

Full text: 1 Database: MEDLINE Main subject: Autoimmune Diseases / Base Sequence / Antithrombin III / RNA-Binding Proteins / Sequence Deletion / Antithrombin III Deficiency / Ubiquitin-Protein Ligases Type of study: Diagnostic_studies / Prognostic_studies Limits: Adult / Female / Humans Language: En Year: 2014 Type: Article

Full text: 1 Database: MEDLINE Main subject: Autoimmune Diseases / Base Sequence / Antithrombin III / RNA-Binding Proteins / Sequence Deletion / Antithrombin III Deficiency / Ubiquitin-Protein Ligases Type of study: Diagnostic_studies / Prognostic_studies Limits: Adult / Female / Humans Language: En Year: 2014 Type: Article