BRCA Mutations and MicroRNA Expression Patterns in the Peripheral Blood of Breast Cancer Patients.

Breast cancer (BC) persists as the predominant malignancy globally, standing as the foremost cause of cancer-related mortality among women. Despite notable advancements in prevention and treatment, encompassing the incorporation of targeted immunotherapies, a continued imperative exists for the development of innovative methodologies. These methodologies would facilitate the identification of women at heightened risk, enhance the optimization of therapeutic approaches, and enable the vigilant monitoring of emergent treatment resistance.

Multigene Panel Testing in Turkish Hereditary Cancer Syndrome Patients.

Objective: Hereditary cancer syndromes (HCSs) are a heterogenous group of disorders caused by germline pathogenic variations in various genes that function in cell growth and proliferation. This study aimed to describe the germline variations in patients with hereditary cancer using multigene panels.

Methods: The molecular and clinical findings of 218 patients with HCS were evaluated.

Mutation Spectrum of Familial Adenomatous Polyposis Patients in Turkish Population: Identification of 3 Novel APC Mutations.

Background: Familial adenomatous polyposis (OMIM #175100) and MUTYH-associated polyposis (OMIM #608456) are rare cancerprone disorders characterized by hundreds of adenomatous polyps in the colon and rectum, which have a high probability of malignant transformation. Attenuated familial adenomatous polyposis is a variant of familial adenomatous polyposis, which is a term used for the condition in which patients have less than 100 colorectal polyps. Germline heterozygous Adenomatous polyposis coli (APC) and biallelic MUTYH (mutY DNA glycosylase) pathogenic variations are responsible for familial adenomatous polyposis and MUTYH-associated polyposis respectively.

A Novel Gene Mutation Affecting Splicing in an Ataxia-Telangiectasia Patient.

Ataxia-telangiectasia (AT) is an autosomal recessive disorder characterized by progressive ataxia, choreoathetosis and immunodeficiency beginning in early childhood. An 8-year-old girl was referred with a diagnosis of AT. She had gait disturbance and dysarthria for 3years.

Whole-exome sequencing reveals new potential genes and variants in patients with premature ovarian insufficiency.

Purpose: Premature ovarian insufficiency (POI) is a heterogeneous disorder characterized by the cessation of menstrual cycles before the age of 40 years due to the depletion or dysfunction of the ovarian follicles. POI is a highly heterogeneous disease in terms of etiology. The aim of this study is to reveal the genetic etiology in POI patients.

When do we need to suspect maturity onset diabetes of the young in patients with type 2 diabetes mellitus?

Objective: Maturity onset diabetes of the young (MODY) patients have clinical heterogeneity as shown by many studies. Thus, often it is misdiagnosed to type 1 or type 2 diabetes(T2DM). The aim of this study is to evaluate MODY mutations in adult T2DM patients suspicious in terms of MODY, and to show clinical and laboratory differences between these two situations.

Genetic and Clinical Characterization of Patients with Maturity-Onset of Diabetes of the Young (MODY): Identification of Novel Variations.

Background: Maturity-onset diabetes of the young (MODY) is a rare monogenic type of diabetes, and accounts for 2-5% of all diabetes cases. An early age of onset, a family history supporting autosomaldominant inheritance, insulin resistance, and the absence of autoimmunity are the major characteristics of MODY. However, genetic testing is crucial for diagnosis.

Secondary findings in 622 Turkish clinical exome sequencing data.

CES (Clinical Exome Sequencing) is a method that we use to diagnose rare diseases with nonspesific clinical features. Besides primary indication for testing genetic information may be detected about diseases which have not yet emerged. ACMG guidelines recommend to report pathogenic variations in medically actionable 59 genes.

Male infertility in Sertoli cell-only syndrome: An investigation of autosomal gene defects.

Objectives: To detect autosomal genetic defects and to determine candidate genes in Sertoli cell-only syndrome infertile men.

Methods: Single-nucleotide polymorphism + comparative genomic hybridization microarray technology was carried out on 39 Sertoli cell-only syndrome infertile patients in the present study. Array comparative genomic hybridization compares the patient's genome against a reference genome, and identifies uncover deletions, amplifications and loss of heterozygosity.

Investigation of the association between mitochondrial DNA and gene mutations in transitional cell carcinoma of the bladder.

Bladder carcinoma is the most common malignancy of the urinary tract. The major aim of the present study is to investigate the association between mitochondrial DNA () and gene mutations in bladder carcinoma. A total of 30 patients with transitional cell carcinoma and 27 controls were recruited for the study.

Effects of MC4R, FTO, and NMB gene variants to obesity, physical activity, and eating behavior phenotypes.

Obesity is a major contributory factor of morbidity and mortality. It has been suggested that biological systems may be involved in the tendency to be and to remain physically inactive also behaviors such as food and beverage preferences and nutrient intake may at least partially genetically determined. Consequently, besides environment, genetic factors may also contribute to the level of physical activity and eating behaviors thus effect obesity.

The frequency and the effects of 21-hydroxylase gene defects in congenital adrenal hyperplasia patients.

Congenital adrenal hyperplasia (CAH) is a group of genetic endocrine disorders, caused by enzyme deficiencies in the conversion of cholesterol to cortisol. More than 90% of the cases have 21-hydroxylase deficiency (21-OHD). The clinical phenotype of the disease is classified as classic, the severe form, and nonclassic, the mild form.

Transforming growth factor-β3 intron 5 polymorphism as a screening marker for non-syndromic cleft lip with or without cleft palate.

In this study, we evaluated the effect of transforming growth factor β3 intron 5 position +104 A➝G (TGF-β3 IVS5+104AG) transition in patients with a non-syndromic cleft lip with or without cleft palate (NSCL/P). A total of 68 patients and 114 controls were recruited for the study. A genotyping procedure was carried out using the PCR-RFLP method.

Detection of mitochondrial DNA mutations in nonmuscle invasive bladder cancer.

Background: Mitochondrial DNA (mtDNA) mutations have been recently described in various tumors; however, data focusing on bladder cancer are scarce. To understand the significance of mtDNA mutations in bladder cancer development, we investigated the mtDNA alterations in bladder cancer cases.

Methods: We studied the mtDNA in 38 bladder tumors and 21 microdissected normal bladder tissue samples.

Genetic diagnosis in infertile men with numerical and constitutional sperm abnormalities.

Infertile men having numerical or structural sperm defects may carry several genetic abnormalities (karyotype abnormalities, Y chromosome microdeletions, cystic fibrosis transmembrane conductance regulator (CFTR) gene mutations, androgen receptor gene mutations, and abnormalities seen in sperm cells) leading to this situation. First we aimed to investigate the relationship between the numerical and constitutional (morphological) sperm anomalies and the genetic disorders that can be seen in infertile males. Our other aim was to compare two different kinds of kits that we use for the detection of Y chromosome microdeletions.

Autosomal recessive idiopathic epilepsy in an inbred family from Turkey: identification of a putative locus on chromosome 9q32-33.

Purpose: The study describes the clinical features of an inbred family from Turkey with three members affected by seizures and tests possible autosomal recessive (AR) inheritance by means of linkage analysis.

Methods: Personal and family history was obtained from each subject, and general physical, neurologic, and EEG examinations were performed. A set of 382 fluorescence-labeled markers was used for the initial genome-wide search.