PubMed Journals Articles About "Uptake Genetic Testing Children Lynch Syndrome Variant Carriers" RSS

12:12 EST 10th December 2018 | BioPortfolio

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Showing "Uptake genetic testing children Lynch syndrome variant carriers" PubMed Articles 1–25 of 24,000+

The uptake of presymptomatic genetic testing in hereditary breast-ovarian cancer and Lynch syndrome: a systematic review of the literature and implications for clinical practice.

Following the identification in a proband of a germline BRCA1/BRCA2 mutation in hereditary breast-ovarian cancer (HBOC) or a DNA mismatch repair gene mutation in Lynch syndrome (LS) he or she will be asked to inform at-risk family members about the option for presymptomatic DNA testing. However, in clinical practice multiple factors may complicate the process of information sharing. We critically evaluated studies on the uptake of presymptomatic genetic testing in both syndromes. A search of relevant MeSH t...

Worldwide Practice Patterns in Lynch Syndrome Diagnosis and Management, Based on Data From the International Mismatch Repair Consortium.

Families with a history of Lynch syndrome often do not adhere to guidelines for genetic testing and screening. We investigated practice patterns related to Lynch syndrome worldwide, to ascertain potential targets for research and public policy efforts METHODS: We collected data from the International Mismatch Repair Consortium [IMRC], which comprises major research and clinical groups engaged in the care of families with Lynch syndrome worldwide. IMRC institutions were invited to complete a questionnaire to...

Low Referral Rate for Genetic Testing in Racially and Ethnically Diverse Patients Despite Universal Colorectal Cancer Screening.

Guidelines recommend that all colorectal tumors be assessed for mismatch repair deficiency, which could increase identification of patients with Lynch syndrome. This is of particular importance for minority populations, in whom hereditary syndromes are under diagnosed. We compared rates and outcomes of testing all tumor samples (universal testing) collected from a racially and ethnically diverse population for features of Lynch syndrome.

DNA mismatch repair protein deficient non-neoplastic colonic crypts: a novel indicator of Lynch syndrome.

Lynch syndrome is the most common form of hereditary colorectal carcinoma. However, establishing the diagnosis of Lynch syndrome is challenging, and ancillary studies that distinguish between sporadic DNA mismatch repair (MMR) protein deficiency and Lynch syndrome are needed, particularly when germline mutation studies are inconclusive. The aim of this study was to determine if MMR protein-deficient non-neoplastic intestinal crypts can help distinguish between patients with and without Lynch syndrome. We ev...

Homozygosity for the c.428delG variant in in a healthy individual: implications for molecular testing in patients with Joubert syndrome.

Joubert syndrome (JBTS) is a rare neurodevelopmental disorder with marked phenotypic variability and genetic heterogeneity. Homozygous or compound heterozygous mutations in the gene on chromosome 14q23 are known to be associated with JBTS-23. The frameshift variant c.428delG is the most frequent variant reported in JBTS-23; yet, homozygosity of this variant was observed in two patients with JBTS-23. However, homozygosity of the c.428delG variant was recently reported as well in one healthy individual.

Missed opportunities: Genetic counseling and testing among an ethnically diverse cohort of women with endometrial cancer.

Lynch syndrome (LS) accounts for the majority of inherited endometrial cancers (EC), and the identification of probands presents a unique opportunity to treat and prevent multiple cancers. The diagnosis of EC can provide the indication for women with specific risk factors to undergo genetic testing (GT). We sought to evaluate genetic counseling referrals (GCR) and subsequent GT rates in an ethnically diverse group of high-risk women.

Microsatellite Instability Is Associated With the Presence of Lynch Syndrome Pan-Cancer.

Microsatellite instability (MSI) and/or mismatch repair deficiency (MMR-D) testing has traditionally been performed in patients with colorectal (CRC) and endometrial cancer (EC) to screen for Lynch syndrome (LS)-associated cancer predisposition. The recent success of immunotherapy in high-frequency MSI (MSI-H) and/or MMR-D tumors now supports testing for MSI in all advanced solid tumors. The extent to which LS accounts for MSI-H across heterogeneous tumor types is unknown. Here, we establish the prevalence ...

Routine molecular analysis for Lynch syndrome among adenomas or colorectal cancer within a national screening program.

It is important to identify individuals with Lynch syndrome because surveillance programs can reduce their morbidity and mortality from colorectal cancer (CRC). We assessed the diagnostic yield of immunohistochemistry to detect Lynch syndrome in patients with advanced and multiple adenomas within our national CRC screening program.

Molecular subtype classification of urothelial carcinoma in Lynch syndrome.

Lynch syndrome confers an increased risk for urothelial carcinoma (UC). Molecular subtypes may be relevant to prognosis and therapeutic possibilities, but have to date not been defined in Lynch syndrome-associated urothelial cancer. We aimed to provide a molecular description of Lynch syndrome-associated UC. Thus, Lynch syndrome-associated UC of the upper urinary tract and the urinary bladder were identified in the Danish hereditary non-polyposis colorectal cancer (HNPCC) register and were transcriptionally...

Uptake of Preimplantation Genetic Diagnosis in Female BRCA1 and BRCA2 Mutation Carriers.

Women with a germline pathogenic variant in the BReast CAncer susceptibility genes (BRCA1 or BRCA2) have an increased risk of early-onset breast and ovarian cancer. In addition to weighing cancer screening and risk-reduction options, healthy BRCA mutation carriers of childbearing age may choose to preclude passing the mutation to the next generation. In the current study, we report on preimplantation genetic diagnosis (PGD) practices in BRCA-positive Israeli women who were offered PGD at no cost.

Comprehensive Study of the Clinical Phenotype of Germline BAP1 Variant-Carrying Families Worldwide.

The BRCA1-associated protein-1 (BAP1) tumor predisposition syndrome (BAP1-TPDS) is a hereditary tumor syndrome caused by germline pathogenic variants in BAP1 encoding a tumor suppressor associated with uveal melanoma, mesothelioma, cutaneous melanoma, renal cell carcinoma, and cutaneous BAP1-inactivated melanocytic tumors. However, the full spectrum of tumors associated with the syndrome is yet to be determined. Improved understanding of the BAP1-TPDS is crucial for appropriate clinical management of BAP1 g...

The Influence of Adolescence on Parents' Perspectives of Testing and Discussing Inherited Cancer Predisposition.

Li-Fraumeni syndrome (LFS) is a highly penetrant cancer predisposition syndrome that may present with a first cancer before or during adolescence/young adulthood. Families offered LFS genetic testing for their children can inform our understanding of how the unique developmental context of adolescence influences parental perspectives about genetic testing and discussions of cancer risk. In this study, semi-structured interviews were conducted with 46 parents of children at risk for LFS to capture those pers...

Dravet syndrome in South African infants: Tools for an early diagnosis.

Dravet syndrome (DS) is a well-described, severe genetic epileptic encephalopathy with an increased risk of SUDEP. The incidence and genetic architecture of DS in African patients is virtually unknown, largely due to lack of awareness and unavailability of genetic testing. The clinical benefits of the available precision medicine approaches to treatment emphasise the importance of an early, correct diagnosis. We investigated the genetic causes and clinical features of DS in South African children to develop...

Clinicopathological features of breast cancer in Japanese female patients with Lynch syndrome.

Lynch syndrome (LS) is a predominantly inherited syndrome caused by a pathological germline mutation in one of the mismatch repair (MMR) genes. Whether breast cancer (BC) is one of the LS-associated tumors is controversial. The aim of this retrospective cohort study was to evaluate the clinical features of BC in Japanese patients with LS.

A Unique Genomic Variant of HDR Syndrome in Newborn.

HDR syndrome (also known as Barakat syndrome) is a rare genetic disorder due to deletions/mutations on specific regions of zinc-finger transcription factor (GATA3) gene.

Lynch syndrome - Muir-Torre variant: implication in gynecologic oncology.

Molecular Background of Colorectal Tumors From Patients with Lynch Syndrome Associated With Germline Variants in PMS2.

Germline variants in the mismatch repair genes MLH1, MSH2 (EPCAM), MSH6, or PMS2 cause Lynch syndrome. Patients with these variants have an increased risk of developing colorectal cancers (CRCs) that differ from sporadic CRCs in genetic and histologic features. It has been a challenge to study CRCs associated with PMS2 variants (PMS2-associated CRCs) because these develop less frequently and in patients of older ages than colorectal tumors with variants in the other mismatch repair genes.

Medical Devices; Hematology and Pathology Devices; Classification of Lynch Syndrome Test Systems. Final order.

The Food and Drug Administration (FDA or we) is classifying Lynch syndrome test systems into class II (special controls). The special controls that apply to the device type are identified in this order and will be part of the codified language for the Lynch syndrome test systems' classification. We are taking this action because we have determined that classifying the device into class II (special controls) will provide a reasonable assurance of safety and effectiveness of the device. We believe this ...

Possible Congenital Zika Syndrome in Older Children Due to Earlier Circulation of Zika Virus.

Congenital Zika syndrome (CZS) was identified following a large Zika virus (ZIKV) outbreak in Brazil in 2015. Two children with clinical presentations consistent with CZS, ages 7 and 8 years old, are described. Both mothers lived in Cambodia, a region with known ZIKV, during their pregnancies and reported fever and rash in the second trimester. The infants were born with severe microcephaly. Testing for congenital infection at birth and genetic testing were unremarkable. In 2017, serologic testing for both ...

Brief Report: Pediatrician Perspectives Regarding Genetic Evaluations of Children with Autism Spectrum Disorder.

Despite current guidelines, few children with autism spectrum disorder (ASD) receive genetic evaluations. We surveyed Utah pediatricians to characterize the knowledge, beliefs, current practices and perceived barriers of pediatricians regarding genetic evaluation of children with ASD. We found over half lacked knowledge of current guidelines and many held beliefs about genetic evaluation that did not align with guidelines. Barriers were lack of insurance coverage for genetic evaluation/testing and long wait...

Duodenal tumor risk in Lynch syndrome.

Lynch syndrome (LS) is associated with an increased risk of small bowel tumors but routine screening is not recommended in international guidelines. The aim of our study was to determinate the prevalence of duodenal tumors in a French cohort of LS patients.

Current review of TP53 pathogenic germline variants in breast cancer patients outside Li-Fraumeni syndrome.

Pathogenic germline variants in TP53 predispose carriers to the multi-cancer Li-Fraumeni syndrome (LFS).  Widespread multigene panel testing is identifying TP53 pathogenic variants in breast cancer patients outside the strict clinical criteria recommended for LFS testing. We aimed to assess frequency and clinical implications of TP53 pathogenic variants in breast cancer cohorts ascertained outside LFS. Classification of TP53 germline variants reported in 59 breast cancer studies, and publicly available pop...

Factors Associated with Acceptability, Consideration and Intention of Uptake of Direct-To-Consumer Genetic Testing: A Survey Study.

With interest in personalised health care growing, so is interest in personal genetic testing. This is now offered direct-to-consumer, thereby referred to as direct-to-consumer genetic testing (DTC-GT). Criticisms have been expressed on whether a truly informed decision to undergo testing is made with regard to these services. In order to provide relevant information to achieve this, knowing the characteristics of the expected user population is helpful. Therefore, the aim of this study is to identify chara...

Sudden cardiac arrest in patients without overt heart disease: limited value of next generation sequencing.

Introduction Unexplained Sudden Cardiac Arrest (USCA), unrelated to coronary or structural heart disease, occurs in up to 10% of the patients and is often attributed to an inherited arrhythmia syndrome. Family screening and genetic testing may be helpful in clarifying the cause of the USCA. Objectives To assess usefulness of clinical evaluation and genetic testing in patients after USCA and in their families. Patients and methods In the years 2014-2017, we studied 44 unrelated patients after USCA and 96 ...

Comprehensive Genetic Screening Recommended for Nonsyndromic Cleft Lip/Palate: Even in the absence of any signs of a syndrome, patients with cleft lip/palate may still carry a mutation in a gene linked to a syndrome and should receive comprehensive genetic testing.

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