Abstract:
:The KRAS pathway and studies evaluating KRAS as a prognostic marker in colorectal cancer are discussed along with advances in KRAS gene mutation testing. Highly sensitive real-time polymerase chain reaction (PCR) methods were developed for this purpose. We examined the applicability of direct sequencing and two real-time PCR methods in the diagnosis of KRAS mutations. We used real-time PCR and direct sequencing-based methods to determine applicability of these KRAS mutation tests in 64 colorectal cancers. The two DNA samples found to be mutation positive by real-time PCR were analyzed again after diluting 100-fold. The results were the same. When we applied the same strategy for the direct sequencing, even a 10-fold dilution did not show the mutations. Therefore, we found that sequencing may not be informative when there are only a few mutant cells in the tumor. KRAS mutation screening on formalin-fixed, paraffin-embedded DNA is very efficient with real-time PCR methods in comparison to direct sequencing. The development and adoption of guidelines for KRAS mutation testing are crucial for success.
journal_name
Genet Test Mol Biomarkersjournal_title
Genetic testing and molecular biomarkersauthors
Hancer VS,Buyukdogan M,Türkmen I,Bassullu N,Altug T,Diz-Kucukkaya R,Bulbul-Dogusoy G,Demir Gdoi
10.1089/gtmb.2011.0027subject
Has Abstractpub_date
2011-11-01 00:00:00pages
831-4issue
11eissn
1945-0265issn
1945-0257journal_volume
15pub_type
临床试验,杂志文章abstract::Up to date, few published studies indicated the associations between genetic polymorphisms and epidural local anesthetics consumption. In this study, we investigated the associations between seven single-nucleotide polymorphisms (SNPs) and epidural ropivacaine consumption during breast cancer surgery in women from nor...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2012.0388
更新日期:2013-06-01 00:00:00
abstract:BACKGROUND:Blepharophimosis-ptosis-epicanthus inversus syndrome (BPES) is a rare autosomal-dominant inherited disease. This study was carried out to investigate the genetic and functional changes within the FOXL2 gene in two Chinese families with BPES. MATERIALS AND METHODS:DNA was extracted from the peripheral blood ...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2018.0064
更新日期:2018-10-01 00:00:00
abstract:AIMS:We assessed the validity of a next-generation sequencing protocol using in-solution hybridization-based enrichment to identify NF1 mutations for the diagnosis of 86 patients with a prototypic genetic syndrome, neurofibromatosis type 1. In addition, other causative genes for classic genetic syndromes were set as th...
journal_title:Genetic testing and molecular biomarkers
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1089/gtmb.2014.0109
更新日期:2014-11-01 00:00:00
abstract::Current classifications of diabetes distinguish between type 1 diabetes (T1D) and type 2 diabetes (T2D). However, recent evidence highlights overlap between T1D and T2D. In a recent study, we have suggested for the first time that STAT4 gene polymorphism is associated with increased risk for the development of T1D in ...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2008.0128
更新日期:2009-04-01 00:00:00
abstract:BACKGROUND AND AIMS:Recently, genetic association studies have linked a number of single nucleotide polymorphisms (SNPs) with liver fibrosis risk of hepatitis C. The present study was designed to validate the association of emerging SNPs with development of liver cirrhosis and chronicity in a Chinese population infecte...
journal_title:Genetic testing and molecular biomarkers
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1089/gtmb.2013.0058
更新日期:2013-09-01 00:00:00
abstract:AIM:To describe the molecular spectrum of alpha-thalassemia molecular defects in a population sample of Saudi Arabian patients from the eastern province. METHODS:DNA was extracted from 41 patients suffering from microcytic, hypochromic anemia. We screened the alpha-globin gene for deletional and nondeletional mutation...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2008.0123
更新日期:2009-04-01 00:00:00
abstract:: Aims: This meta-analysis evaluated the value of using Epstein-Barr virus (EBV) DNA titers as a predictive factor in assessing the clinical course of nasopharyngeal carcinoma (NPC) patients in Southeast Asia. Methods: A systemat...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章,meta分析
doi:10.1089/gtmb.2018.0304
更新日期:2019-07-01 00:00:00
abstract:AIMS:New sequencing technologies allow increased opportunities to use genomic-based diagnostic tests (genomic tests) in routine clinical practice, which will impact healthcare budgets and patients' outcomes. This article aims to generate a list of recommendations on how the principles and methods of cost-effectiveness ...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章,评审
doi:10.1089/gtmb.2017.0105
更新日期:2017-12-01 00:00:00
abstract:BACKGROUND:Cytogenetic biomarkers are most frequently used well-established endpoints in human population studies with their sensitivity for measuring exposure to genotoxic agents. They have an important role as early predictors of cancer risk. Identification of individual genotypes of metabolic gene polymorphisms help...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2012.0038
更新日期:2012-10-01 00:00:00
abstract:AIMS:The genetics of folate metabolism is one of the most significant mechanisms influencing fetal growth and may underlie some cases of unexplained recurrent miscarriage. Reduced folate carrier 1, encoded by the SLC19A1 gene, is a transporter of folate. Folate deficiency and elevated levels of homocysteine could be di...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2015.0230
更新日期:2016-05-01 00:00:00
abstract::Impaired energy homeostasis and low-grade inflammation have been related to components of the metabolic syndrome (MetS) such as dyslipidemia, obesity, and insulin resistance. Single-nucleotide polymorphisms in the genes encoding for IL-6 (g.-634G>C; c.174G>C), TNFα (g.-308G>A), methylenetetrahydrofolate reductase (MTH...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2010.0256
更新日期:2011-09-01 00:00:00
abstract:AIM:To investigate the association between high myopia (HM) and single nucleotide polymorphisms (SNPs) in the myocilin (MYOC), hepatocyte growth factor (HGF), hepatocyte growth factor receptor (MET), and aggrecan (ACAN) genes in a Han Chinese population. METHODS:Sixteen SNPs were genotyped by the SNaPshot method in a ...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2013.0479
更新日期:2014-06-01 00:00:00
abstract:: Aims: To compare fine-needle aspiration cytology (FNAC) with imprinted gene detection in the differential diagnosis of benign and malignant thyroid nodules. Methods: A total of 34 patients (35 cases of thyroid nodules) were exa...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2019.0028
更新日期:2019-09-01 00:00:00
abstract:OBJECTIVES:Synovitis, acne, pustulosis, hyperostosis, and osteitis (SAPHO) syndrome, rheumatoid arthritis (RA), ankylosing spondylitis (AS), and seronegative spondyloarthropathy (SPA) are autoimmune diseases of unknown etiology, which share some clinical manifestations in common. Previous family-based investigations su...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2016.0112
更新日期:2017-02-01 00:00:00
abstract::The aim of the study was to determine (1) the frequency and type of mutations in the coding region of the GJB2 gene (sequencing), (2) the frequency of splice site mutation IVS1 + 1G > A in the GJB2 gene (multiplex ligation-dependent probe amplification analysis), (3) possible copy number changes in the GJB2, GJB3, GJB...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2009.0073
更新日期:2009-10-01 00:00:00
abstract:AIMS:Poly (ADP-ribose) polymerase-1 (PARP-1) plays an important role in the repair of damaged DNA and has prognostic significance in a variety of human malignancies. However, little is known about its expression levels and clinical implication in patients with acute myeloid leukemia (AML). MATERIALS AND METHODS:Quanti...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2018.0085
更新日期:2018-06-01 00:00:00
abstract::Genotypic profiles of the natural killer cell immunoglobulin-like receptors (KIR) have been reported to vary among different ethnic groups and variable clinical entities. This study represents the first report on its distribution among patients with familial Mediterranean fever (FMF). We studied 56 unrelated Lebanese ...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2008.0081
更新日期:2009-02-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Essential hypertension (EH) is a complex phenotype that is affected by multiple genetic and environmental factors. Some authors have explored the role of genetic variability of the glutathione S-transferase (GST) enzymes in EH risk with contrasting results. In particular, our previous study inv...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2011.0310
更新日期:2012-06-01 00:00:00
abstract:AIM:The objective of this study was to investigate the prevalence of polymorphic markers of the CYP2C19, CYP2C9, CYP2D6, SLCO1B1, and ABCB1 genes among the three ethnic groups in Dagestan and compare it with the carrier frequency of these markers among the Russian population living in Moscow. METHODS:The study involve...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2017.0036
更新日期:2017-12-01 00:00:00
abstract:: Background: Single nucleotide polymorphisms (SNPs) within precursor microRNAs (miRNAs) can affect the expression of the miRNAs and may be involved in the pathogenesis of pulmonary tuberculosis (PTB) and extrapulmonary tuberculosis (EPTB). Aims: ...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2019.0003
更新日期:2019-07-01 00:00:00
abstract::Mutations in GJB2 gene are the most common cause of nonsyndromic sensorineural recessive hearing loss. One specific mutation, c.35delG, is the most frequent in the majority of Caucasian populations and may account for up to 70% of all GJB2 mutations. However, 10-40% of the patients carry only one pathogenic mutation i...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2009.0025
更新日期:2009-10-01 00:00:00
abstract:OBJECTIVE:In this study, the aim of prenatal screening was to estimate the carrier frequency of the three mutations 35delG, del (GJB6-D13S1830), and del (GJB6-D13S1854), which are known to be the leading mutations of hereditary hearing loss in European populations. METHODS:We performed a prenatal screening to assess t...
journal_title:Genetic testing and molecular biomarkers
pub_type: 临床试验,杂志文章
doi:10.1089/gtmb.2011.0048
更新日期:2011-11-01 00:00:00
abstract::We determined the frequencies of null mutations of the FLG gene--2282del4, R501X, R2447X, 3702delG, S3247X, and the 12-repeat allele (rs12730241)--among 460 Caucasians of the city of Novosibirsk, Russia. The frequency was 17.7% for rs12730241, 2.73% for 2282del4, 0.22% for R501X, 0.33% for R2447X, and 0% for 3702delG ...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章,随机对照试验
doi:10.1089/gtmb.2014.0247
更新日期:2014-12-01 00:00:00
abstract:AIMS:Surviving under a stressful environment may be a real challenge. Individuals (and their offspring) with accumulated genetic variation in their DNA repair genes may have a higher probability to survive under these conditions. A partially unstable DNA repair system raises the mutagenesis rate and the probability for...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2014.0053
更新日期:2014-08-01 00:00:00
abstract:: Aims: Pathogenic variants in mitochondrial DNA are known to be associated with sensorineural hearing loss (SNHL) and aminoglycoside-induced HL. Among them, the m.1555A>G mutation is the most common. Thus, a rapid and easy companion diagnostic method for this mutation would...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章,随机对照试验
doi:10.1089/gtmb.2020.0105
更新日期:2021-01-01 00:00:00
abstract::Tay-Sachs disease is a rare autosomal recessive neurodegenerative disorder that results from mutations in the HEXA gene, leading to β-hexosaminidase A (HexA) α subunit deficiency. An unusual variant of Tay-Sachs disease is known as the B1 variant. Previous studies indicated that, in northern Portugal, this is not only...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2010.0129
更新日期:2011-03-01 00:00:00
abstract::The single-nucleotide polymorphisms (SNPs) of the Mina gene in animals are associated with the development of Th2-mediated diseases. However, there is no information whether the association occurs in humans. This case-control study aimed at examining the potential association of the SNP of the Mina gene with the devel...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2010.0240
更新日期:2011-07-01 00:00:00
abstract:BACKGROUND:Qualitative and quantitative detection of circulating tumor DNA (ctDNA) is a liquid biopsy technology used for early cancer diagnosis. However, the plasma ctDNA content is extremely low, so it is difficult to detect somatic mutations of tumors using conventional sequencing methods. Target region sequencing (...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2018.0173
更新日期:2019-04-01 00:00:00
abstract::Founder mutations, particularly 35delG in the GJB2 gene, have to a large extent contributed to the high frequency of autosomal recessive nonsyndromic hearing loss (ARNSHL). Mutations in transmembrane channel-like gene 1 (TMC1) cause ARNSHL. The p.R34X mutation is the most frequent known mutation in the TMC1 gene. To s...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2009.0174
更新日期:2010-06-01 00:00:00
abstract::Cowden syndrome (CS), an autosomal dominant disorder, is associated with germline mutations of the PTEN (phosphatase, tensin homolog, deleted on chromosome TEN) gene. PTEN mutations were linked to several human neoplasms. Clinical diagnosis has been based on Consortium criteria, but detection of mutations in the PTEN ...
journal_title:Genetic testing and molecular biomarkers
pub_type: 杂志文章
doi:10.1089/gtmb.2009.0043
更新日期:2009-08-01 00:00:00