Publications by authors named "Alaaeldin Fayez"

Article Synopsis
  • * Objectives: The study aimed to investigate genetic variants in two deceased neonates exhibiting uncommon OCA1 traits and to explore how TKFC variants might contribute to broader health issues.
  • * Results: Genetic analysis confirmed harmful variants in both TYR and TKFC genes in the affected neonates and suggested that these variants could disrupt normal biological functions, leading to severe health problems.
View Article and Find Full Text PDF

MPS III is an autosomal recessive lysosomal storage disease caused mainly by missense variants in the NAGLU, GNS, HGSNAT, and SGSH genes. The pathogenicity interpretation of missense variants is still challenging. We aimed to develop unsupervised clustering-based pathogenicity predictor scores using extracted features from eight in silico predictors to predict the impact of novel missense variants of Sanfilippo syndrome.

View Article and Find Full Text PDF

Several neurological disorders, neurodevelopmental disorders, and neurodegenerative disorders have a genetic element with various clinical presentations ranging from mild to severe presentation. Neurological disorders are rare multifactorial disorders characterized by dysfunction and degeneration of synapses, neurons, and glial cells which are essential for movement, coordination, muscle strength, sensation, and cognition. The cerebellum might be involved at any time, either during development and maturation or later in life.

View Article and Find Full Text PDF

Objectives: Conotruncal heart defects (CTDs) are highly heritable, and approximately one-third of all congenital heart defects are due to CTDs. Through post-analysis of GWAS data relevant to CTDs, a new putative signal transduction pathway, called Vars2-Pic3ca-Akt, associated with CTD has been hypothesized. Here, we aimed to validate the Vars2-Pic3ca-Akt pathway experimentally by measuring Vars2 and PIP3 in patients with CTDs and controls, and to construct a PIP3 inhibitor, as one of harmful-relevant CTD pathogenesis, through an Akt-based drug design strategy.

View Article and Find Full Text PDF

Background: Childhood dilated cardiomyopathy (CDCM) is the most common cardiomyopathy in children and it is risk factor to heart failure and sudden death. Most of the different etiologic factors which have been postulated to DCM are idiopathic, and its pathogenesis remains uncertain. So it was worth investigating the potential DCM pathogenicity models to establish early noninvasive diagnosis parameters especially in CDCM patients.

View Article and Find Full Text PDF
Article Synopsis
  • MeCP2 is crucial for neuron function, and mutations in its gene are primarily responsible for Rett syndrome, with effects varying based on the mutation's type and location.
  • This study utilized various in silico algorithms to analyze the functional impact of three new mutations (D121A, S359Y, P403S) and one rarer mutation (R133H) in the MECP2 gene.
  • The results indicated that some mutations may reduce MeCP2’s ability to bind DNA and possibly alter protein phosphorylation, while the analysis showed no significant pathogenic mechanisms for one of the variants (S359Y).*
View Article and Find Full Text PDF

Background: The B30.2 variants lead to most relevant severity forms of familial Mediterranean fever (FMF) manifestations. The B30.

View Article and Find Full Text PDF
Article Synopsis
  • The Arab population, consisting of over 420 million people, exhibits significant genetic diversity and a notable prevalence of genetic diseases, especially autosomal recessive disorders.
  • There is currently a lack of comprehensive databases documenting clinically relevant genetic variants from this population, which hinders accurate diagnosis and disease prevention.
  • To address this issue, the DALIA database has been created to compile genetic variants associated with diseases in the Arab population, serving as a valuable resource for clinical interpretation and genetic research.
View Article and Find Full Text PDF

Catechol-O-methyltransferase (COMT) enzyme has a major role in the adjustment of catechol-dependent functions, for example, cognition, cardiac function, and pain processing. The pathogenesis of autism may be related to dysfunction in the midbrain dopaminergic system. Therefore, we aimed to clarify how COMT gene variants affect dopamine level, and its potential impact on phenotype traits of autistic patients.

View Article and Find Full Text PDF

MicroRNAs (miRNAs) trigger a two-layer regulatory network directly or through transcription factors and their co-regulators. Unlike miR-375, the role of miR-145 and miR-224 in inhibiting or driving cancer cell migration is controversial. This study is a step towards addressing the potential of miR-375, miR-145 and miR-224 expression modulation to inhibit colorectal carcinoma (CRC) cells migration in vitro through regulation of non-target genes VEGFA, TGFβ1, IGF1, CD105 and CD44.

View Article and Find Full Text PDF

Background: The microdeletion events that occur in the Y chromosome-azoospermia factor () region may lead to dyszoospermia. Also, the deleted azoospermia () gene on AZFc and autosomal deleted azoospermia like gene () are suggested to represent impairment, so it is interesting to determine the independency pattern of the region and gene in azoospermic patients.

Aim: To study the molecular characterization of and in 64 idiopathic non-obstructed azoospermia patients and 30 sexually reproductive men.

View Article and Find Full Text PDF

Sclerosteosis is a rare autosomal recessive condition characterized by increased bone density. Mutations in SOST gene coding for sclerostin are linked to sclerosteosis. Two Egyptian brothers with sclerosteosis and their apparently normal consanguineous parents were included in this study.

View Article and Find Full Text PDF