Identification and bioinformatics analysis of a novel variant in the gene in a patient with intellectual developmental disorder.

HERC2-associated neurodevelopmental-disorders(NDD) encompass a cluster of medical conditions that arise from genetic mutations occurring within the gene. These disorders can manifest a spectrum of symptoms that impact the brain and nervous system, including delayed psychomotor development, severe mental retardation, seizures and autistic features. Whole-Exome-Sequencing(WES) was performed on a ten-year-old male patient referred to the genetic center for genetic analysis.

Identification of Two Novel Pathogenic Variants of the Gene in the Iranian-Azeri Turkish Ethnic Group by Applying Whole Exome Sequencing.

Background: The gene encodes a multifunctional kinase involved in important cellular functions, such as checkpoint signaling and apoptosis, in response to DNA damage. Bi-allelic pathogenic variants in this gene cause Ataxia Telangiectasia (AT), while carriers of pathogenic variants are at increased risk of cancer depending on the pathogenicity of the variant they carry. Identifying pathogenic variants can aid in the management of the disease in carriers.

Identification of a de novo, Novel Pathogenic Variant in the Splice Region of the Gene in an Iranian Azeri Turkish Family with Waardenburg Syndrome.

Background: Waardenburg syndrome (WS) is an inherited heterogeneous auditory pigmentary syndrome, divided into at least four types and characterized by iris heterochromia, white forelock, prominent nasal root, dystopia canthorum, middle eyebrow hypertrichosis, and deafness. Pathogenic variants in the gene have been reported to be involved in WS disease.

Methods: Whole exome sequencing (WES) was conducted on a 24-year-old male, who originated from Iranian Azeri Turkish ethnic group, with symptoms of deafness and blue eyes from brown-eyed parents.

A novel loss of function mutation in the PHD domain of the RAG2 gene, affecting zinc-binding affinity.

Background: Severe combined immune deficiencies (SCIDs) are genetically heterogeneous disorders that lead to the absence or malfunction of adaptive immune cells, including T- and B-cells. Pathogenic variants in the RAG2 gene are associated with this disease.

Methods: A couple with consanguineous marriage from the Iranian-Azeri-Turkish ethnic group was referred to the genetic lab.

Identification of a novel mutation in the gene in an Iranian family with autosomal recessive congenital myopathy, with fibre-type disproportion.

Congenital fibre-type disproportion (CFTD) with myopathy, is a genetically heterogeneous disease in which there is relative hypotrophy of type-1-muscle-fibres compared to type-2-fibres on skeletal muscle biopsy. The classical characteristics of CFTD are infantile hypotonia and nonprogressive muscle weakness with a broad range of clinical manifestations. Pathogenic mutations in the gene encoding 3-hydroxyacyl-CoA-dehydratase-1 have recently been reported to be associated with this disease.