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A novel splicing mutation of ARHGAP29 is associated with nonsyndromic cleft lip with or without cleft palate. 2022

Qiuxia Yu, and Qiong Deng, and Fang Fu, and Ru Li, and Wenwen Zhang, and Junhui Wan, and Xin Yang, and Dan Wang, and Fucheng Li, and Shaoqing Wu, and Jian Li, and Dongzhi Li, and Can Liao
Department of Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, P. R. China.

Nonsyndromic cleft lip with or without cleft palate (NSCL/P) is one of the most common birth defects, and occurs in approximately 1/700 live births worldwide. The correlation between the ABCA4-ARHGAP29 region and NSCL/P was first identified by genome-wide association studies (GWAS), but few reports have examined NSCL/P caused by ARHGAP29 mutations in the Chinese population. We performed chromosome microarray analysis (CMA) for two consecutive abnormal fetuses and whole exome sequencing (WES) for the family, including 3 patients and 2 normal family members, Sanger sequencing and RT-PCR were used to confirm the mutation. We identified a novel splice donor mutation (ARHGAP29 c.1920 + 1G > A) in two consecutive NSCL/P fetuses, and the variant was inherited from the mother and grandfather. The mutation caused abnormal skipping of exon 17, and the mRNA level of ARHGAP29 was significantly decreased compared to the wild type. In this study, we successfully diagnosed the genetic cause of NSCL/P in a family and first report that the c.1920 + 1G > A mutation in ARHGAP29 is associated with NSCL/P. Our study enriches the genetic landscape of NSCL/P, extends the mutation spectrum of ARHGAP29, and provides a new direction for the diagnosis of NSCL/P in patients and its prenatal diagnosis in fetuses.

UI MeSH Term Description Entries
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D002971 Cleft Lip Congenital defect in the upper lip where the maxillary prominence fails to merge with the merged medial nasal prominences. It is thought to be caused by faulty migration of the mesoderm in the head region. Harelip,Cleft Lips,Harelips,Lip, Cleft,Lips, Cleft
D002972 Cleft Palate Congenital fissure of the soft and/or hard palate, due to faulty fusion. Cleft Palate, Isolated,Cleft Palates,Palate, Cleft,Palates, Cleft
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D016022 Case-Control Studies Comparisons that start with the identification of persons with the disease or outcome of interest and a control (comparison, referent) group without the disease or outcome of interest. The relationship of an attribute is examined by comparing both groups with regard to the frequency or levels of outcome over time. Case-Base Studies,Case-Comparison Studies,Case-Referent Studies,Matched Case-Control Studies,Nested Case-Control Studies,Case Control Studies,Case-Compeer Studies,Case-Referrent Studies,Case Base Studies,Case Comparison Studies,Case Control Study,Case Referent Studies,Case Referrent Studies,Case-Comparison Study,Case-Control Studies, Matched,Case-Control Studies, Nested,Case-Control Study,Case-Control Study, Matched,Case-Control Study, Nested,Case-Referent Study,Case-Referrent Study,Matched Case Control Studies,Matched Case-Control Study,Nested Case Control Studies,Nested Case-Control Study,Studies, Case Control,Studies, Case-Base,Studies, Case-Comparison,Studies, Case-Compeer,Studies, Case-Control,Studies, Case-Referent,Studies, Case-Referrent,Studies, Matched Case-Control,Studies, Nested Case-Control,Study, Case Control,Study, Case-Comparison,Study, Case-Control,Study, Case-Referent,Study, Case-Referrent,Study, Matched Case-Control,Study, Nested Case-Control
D055106 Genome-Wide Association Study An analysis comparing the allele frequencies of all available (or a whole GENOME representative set of) polymorphic markers to identify gene candidates or quantitative trait loci associated with a specific organism trait or specific disease or condition. Genome Wide Association Analysis,Genome Wide Association Study,GWA Study,Genome Wide Association Scan,Genome Wide Association Studies,Whole Genome Association Analysis,Whole Genome Association Study,Association Studies, Genome-Wide,Association Study, Genome-Wide,GWA Studies,Genome-Wide Association Studies,Studies, GWA,Studies, Genome-Wide Association,Study, GWA,Study, Genome-Wide Association
D018528 ATP-Binding Cassette Transporters A family of MEMBRANE TRANSPORT PROTEINS that require ATP hydrolysis for the transport of substrates across membranes. The protein family derives its name from the ATP-binding domain found on the protein. ABC Transporter,ABC Transporters,ATP-Binding Cassette Transporter,ATP Binding Cassette Transporter,ATP Binding Cassette Transporters,Cassette Transporter, ATP-Binding,Transporter, ABC,Transporter, ATP-Binding Cassette,Transporters, ABC,Transporters, ATP-Binding Cassette
D020022 Genetic Predisposition to Disease A latent susceptibility to disease at the genetic level, which may be activated under certain conditions. Genetic Predisposition,Genetic Susceptibility,Predisposition, Genetic,Susceptibility, Genetic,Genetic Predispositions,Genetic Susceptibilities,Predispositions, Genetic,Susceptibilities, Genetic
D020641 Polymorphism, Single Nucleotide A single nucleotide variation in a genetic sequence that occurs at appreciable frequency in the population. SNPs,Single Nucleotide Polymorphism,Nucleotide Polymorphism, Single,Nucleotide Polymorphisms, Single,Polymorphisms, Single Nucleotide,Single Nucleotide Polymorphisms
D020690 GTPase-Activating Proteins Proteins that activate the GTPase of specific GTP-BINDING PROTEINS. GAP Proteins,GAP Protein,GTPase-Activating Protein,GTPase Activating Protein,GTPase Activating Proteins

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