Non-syndromic intellectual disability (NS-ID) is a widespread neurodevelopmental disorder in which the major phenotypic manifestation is low IQ. Given the known genetic overlaps between the two conditions, it was hypothesize that autosomal recessive NS-ID (NS-ARID) genes may also play a role in autism. In this thesis, autism probands with CNVs overlapping NS-ARID genes were screened for additional mutations by sequencing. In addition, TRAPPC9 was identified as a novel cause of NS-ARID in two unrelated consanguineous families. TRAPPC9 (NIBP) is believed to function in the NF-kB pathway and the TRAPP complex. Multiple probands with developmental delays and CNVs overlapping TRAPPC9 were also identified. A potential mechanism for the CNV-related phenotype is that TRAPPC9 may be partially paternally imprinted in brain, and overlapping CNVs may cause loss of regulation. Identification of genes for autism and ID will translate into earlier diagnosis and better clinical care for this population in the future.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:OTU.1807/29568 |
| Date | 25 August 2011 |
| Creators | Kaufman, Liana |
| Contributors | Vincent, John B. |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | en_ca |
| Detected Language | English |
| Type | Thesis |
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