Novel mutations in WWOX, RARS2, and C10orf2 genes in consanguineous Arab families with intellectual disability.
Intellectual disability is a heterogeneous disease with many genes and mutations influencing the phenotype. Consanguineous families constitute a rich resource for the identification of rare variants causing autosomal recessive disease, due to the effects of inbreeding. Here, we examine three consanguineous Arab families, recruited in a quest to identify novel genes/mutations. All the families had multiple offspring with non-specific intellectual disability. We identified homozygosity (autozygosity) intervals in those families through SNP genotyping and whole exome sequencing, with variants filtered using Ingenuity Variant Analysis (IVA) software. The families showed heterogeneity and novel mutations in three different genes known to be associated with intellectual disability. These mutations were not found in 514 ethnically matched control chromosomes. p.G410C in WWOX, p.H530Y in RARS2, and p.I69F in C10orf2 are novel changes that affect protein function and could give new insights into the development and function of the central nervous system.
Qatar Biomedical Research Institute, Hamad Bin Khalifa University, Doha, P.O. Box 5825, Qatar. asemalkhateeb@just.edu.jo.|Biotechnology and Genetics Department, Jordan University of Science and Technology, P.O. Box 3030, Irbid, 22110, Jordan. asemalkhateeb@just.edu.jo.
Asem M
AM
Alkhateeb
Neurosciences Department, Jordan University of Science and Technology, P.O. Box 3030, Irbid, 22110, Jordan.
Samah K
SK
Aburahma
Qatar Biomedical Research Institute, Hamad Bin Khalifa University, Doha, P.O. Box 5825, Qatar.
Wesal
W
Habbab
Qatar Biomedical Research Institute, Hamad Bin Khalifa University, Doha, P.O. Box 5825, Qatar.
I Richard
IR
Thompson
D018912:Arabs; D001126:Arginine-tRNA Ligase / Q000235:genetics*; D003241:Consanguinity; D004252:DNA Mutational Analysis; D059472:Exome; D005260:Female; D005838:Genotype; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D047908:Intracellular Signaling Peptides and Proteins; D008297:Male; D009154:Mutation; D010375:Pedigree; D010641:Phenotype; D011506:Proteins / Q000235:genetics*; D025521:Tumor Suppressor Proteins / Q000235:genetics*; D000074584:WW Domain-Containing Oxidoreductase / Q000235:genetics*
C506096:DEPP1 protein, human; D047908:Intracellular Signaling Peptides and Proteins; D011506:Proteins; D025521:Tumor Suppressor Proteins; D000074584:WW Domain-Containing Oxidoreductase; C486071:WWOX protein, human; D001126:Arginine-tRNA Ligase; C000604250:RARS2 protein, human
C10orf2; Exome; Intellectual disability; RARS2; WWOX