High-resolution genetic analysis of whole APC gene deletions: a report of two cases and patient characteristics

Bibliographic Details
Title: High-resolution genetic analysis of whole APC gene deletions: a report of two cases and patient characteristics
Authors: Hiroki Tanabe, Yasuyuki Koshizuka, Kazuyuki Tanaka, Kenji Takahashi, Masami Ijiri, Keitaro Takahashi, Katsuyoshi Ando, Nobuhiro Ueno, Shin Kashima, Takeo Sarashina, Kentaro Moriichi, Kenrokuro Mitsube, Yusuke Mizukami, Mikihiro Fujiya, Yoshio Makita
Source: Human Genome Variation, Vol 11, Iss 1, Pp 1-5 (2024)
Publisher Information: Nature Publishing Group, 2024.
Publication Year: 2024
Collection: LCC:Genetics
LCC:Life
Subject Terms: Genetics, QH426-470, Life, QH501-531
More Details: Abstract Familial adenomatous polyposis (FAP) is an autosomal dominant syndrome caused by germline variants in the APC gene, leading to the development of numerous colorectal polyps and significantly increases the risk of colorectal cancer. A diagnosis is typically made using colonoscopy, and genetic testing can assist in patient surveillance and carrier identification. Recent advances include the use of whole-genome array comparative genomic hybridization (a-CGH), which provides better resolution of genetic imbalances. We aimed to explore the specific features of FAP patients with whole APC gene deletions using high-resolution a-CGH and to compare patient characteristics. Two polyposis patients with whole APC deletions were identified, and the lost genetic sizes ranged from 0.3–1.1 Mb. Nervous abnormalities were a characteristic symptom in a patient with a 1.1 Mb loss. A patient with an approximately 0.3 Mb loss, which included the entire APC gene, presented a polyposis phenotype without intellectual disability. The comparison of genetic losses, with or without intellectual disability, revealed 7 genetic changes. Consequently, EPB41L4A is a candidate gene associated with the neurogenic phenotype.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2054-345X
Relation: https://doaj.org/toc/2054-345X
DOI: 10.1038/s41439-024-00301-z
Access URL: https://doaj.org/article/880dd0b1dbea4dbaaeb2ff166d71331e
Accession Number: edsdoj.880dd0b1dbea4dbaaeb2ff166d71331e
Database: Directory of Open Access Journals
More Details
ISSN:2054345X
DOI:10.1038/s41439-024-00301-z
Published in:Human Genome Variation
Language:English