| Title: |
Bi-allelic Loss of Human APC2, Encoding Adenomatous Polyposis Coli Protein 2, Leads to Lissencephaly, Subcortical Heterotopia, and Global Developmental Delay |
| Authors: |
Lee, Sangmoon; Chen, Dillon Y; Zaki, Maha S; Maroofian, Reza; Houlden, Henry; Di Donato, Nataliya; Abdin, Dalia; Morsy, Heba; Mirzaa, Ghayda M; Dobyns, William B; McEvoy-Venneri, Jennifer; Stanley, Valentina; James, Kiely N; Mancini, Grazia MS; Schot, Rachel; Kalayci, Tugba; Altunoglu, Umut; Karimiani, Ehsan Ghayoor; Brick, Lauren; Kozenko, Mariya; Jamshidi, Yalda; Manzini, M Chiara; Toosi, Mehran Beiraghi; Gleeson, Joseph G |
| Source: |
American Journal of Human Genetics, vol 105, iss 4 |
| Publisher Information: |
eScholarship, University of California |
| Publication Year: |
2019 |
| Collection: |
University of California: eScholarship |
| Subject Terms: |
31 Biological Sciences (for-2020); Cancer (rcdc); Digestive Diseases (rcdc); Brain Disorders (rcdc); Rare Diseases (rcdc); Congenital Structural Anomalies (rcdc); Clinical Research (rcdc); Neurosciences (rcdc); Intellectual and Developmental Disabilities (IDD) (rcdc); Pediatric (rcdc); Neurological (hrcs-hc); Alleles (mesh); Classical Lissencephalies and Subcortical Band Heterotopias (mesh); Cytoskeletal Proteins (mesh); Developmental Disabilities (mesh); Female (mesh); Humans (mesh); Lissencephaly (mesh); Male (mesh); Pedigree (mesh); APC2; agyria; band heterotopia; epilepsy; intellectual disability; lissencephaly; neuronal migration; pachygyria; 06 Biological Sciences (for); 11 Medical and Health Sciences (for) |
| Subject Geographic: |
844 - 853 |
| Description: |
Lissencephaly is a severe brain malformation in which failure of neuronal migration results in agyria or pachygyria and in which the brain surface appears unusually smooth. It is often associated with microcephaly, profound intellectual disability, epilepsy, and impaired motor abilities. Twenty-two genes are associated with lissencephaly, accounting for approximately 80% of disease. Here we report on 12individuals with a unique form of lissencephaly; these individuals come from eight unrelated families and have bi-allelic mutations in APC2, encoding adenomatous polyposis coli protein 2. Brain imaging studies demonstrate extensive posterior predominant lissencephaly, similar to PAFAH1B1-associated lissencephaly, as well as co-occurrence of subcortical heterotopia posterior to the caudate nuclei, "ribbon-like" heterotopia in the posterior frontal region, and dysplastic in-folding of the mesial occipital cortex. The established role of APC2 in integrating the actin and microtubule cytoskeletons to mediate cellular morphological changes suggests shared function with other lissencephaly-encoded cytoskeletal proteins such as α-N-catenin (CTNNA2) and platelet-activating factor acetylhydrolase 1b regulatory subunit 1 (PAFAH1B1, also known as LIS1). Our findings identify APC2 as a radiographically distinguishable recessive form of lissencephaly. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
unknown |
| Relation: |
qt1h9968t9; https://escholarship.org/uc/item/1h9968t9; https://escholarship.org/content/qt1h9968t9/qt1h9968t9.pdf |
| DOI: |
10.1016/j.ajhg.2019.08.013 |
| Availability: |
https://escholarship.org/uc/item/1h9968t9; https://escholarship.org/content/qt1h9968t9/qt1h9968t9.pdf; https://doi.org/10.1016/j.ajhg.2019.08.013 |
| Rights: |
public |
| Accession Number: |
edsbas.B7E29CBF |
| Database: |
BASE |