A Case of a Child with an APC Pathogenic Mutation, Aberrant Expression of Splice Variants and Positive Family History of FAP

作者：Taki Keiko; Sato Yasuyoshi; Sato Yuri; Ashihara Yuumi; Chino Akiko; Igarashi Masahiro; Sato Koichiro; Kitagawa Tomoyuki; Maetani Iruru; Nemoto Chieko; Nasuno Kiyoto; Sekine Takashi; Arai Masami^*

来源：Japanese Journal of Clinical Oncology, 2014, 44(6): 602-606.

DOI：10.1093/jjco/hyu050

• FAP
• APC
• splicing mutation

Familial adenomatous polyposis is an autosomal dominant hereditary disease characterized by the appearance of hundreds to thousands of colorectal adenomatous polyps; if left untreated, there is nearly a 100% lifetime risk of colorectal cancer. In the present case, adenomatous polyps were observed at 6 years of age. Unlike our previous assumption, adenomatous polyps were detected by colonoscopy at %26lt; 10 years of age. Considering the clinical importance of early diagnosis, we report this case involving germline adenomatous polyposis coli mutation (c.1958G %26gt; C, GenBank: M74088.1) that caused an increase in the isoform without exon 15. Although this isoform has been reported previously, it remains controversial whether the variant is pathogenic or not because it was observed both in patients with familial adenomatous polyposis and in normal controls. Nonetheless, due to quantitative distortion of splice variants in adenomatous polyposis coli transcripts and the early development of adenomatous polyps, we believe that this variant may be pathogenic.

• 出版日期2014-6
• 单位中国医学科学院肿瘤医院