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NCCN: Test All Colorectal Cancers for Lynch SyndromeNCCN: Test All Colorectal Cancers for Lynch Syndrome

The guidance is in a new guideline from the National Comprehensive Cancer Network (NCCN). Medscape Medical News
Source: Medscape Today Headlines - Category: Consumer Health News Tags: Hematology-Oncology News Source Type: news

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(Springer) Individuals with Lynch syndrome, a genetic condition that has long been known to carry dramatically increased risk of colorectal cancer and uterine cancer, now also have an increased risk of breast cancer. This is the conclusion of a study in the journal Genetics in Medicine which is published by Springer Nature.
Source: EurekAlert! - Cancer - Category: Cancer & Oncology Source Type: news
ConclusionsTherefore, compared with Lynch-syndrome-associated cancers, sporadic MSI cancers are more frequently solid, poorly differentiated medullary cancers that express PD-L1.
Source: International Journal of Clinical Oncology - Category: Cancer & Oncology Source Type: research
CONCLUSIONS: Therefore, compared with Lynch-syndrome-associated cancers, sporadic MSI cancers are more frequently solid, poorly differentiated medullary cancers that express PD-L1. PMID: 29327160 [PubMed - as supplied by publisher]
Source: Clinical Colorectal Cancer - Category: Cancer & Oncology Authors: Tags: Int J Clin Oncol Source Type: research
AbstractLynch syndrome (LS) predisposes to a spectrum of cancers and increases the lifetime risk of developing colorectal- or endometrial cancer to over 50%. Lynch syndrome is dominantly inherited and is caused by defects in DNA mismatch-repair genesMLH1, MSH2, MSH6 orPMS2, with the vast majority detected inMLH1 andMSH2. Recurrent LS-associated variants observed in apparently unrelated individuals, have either arisen de novo in different families due to mutation hotspots, or are inherited from a founder (a common ancestor) that lived several generations back. There are variants that recur in some populations while also act...
Source: Familial Cancer - Category: Cancer & Oncology Source Type: research
Abstract DNA repair pathways are essential for cellular survival as our DNA is constantly under assault from both exogenous and endogenous DNA damaging agents. Five major mammalian DNA repair pathways exist within a cell to maintain genomic integrity. Of these, the DNA mismatch repair (MMR) pathway is highly conserved among species and is well documented in bacteria. In humans, the importance of MMR is underscored by the discovery that a single mutation in any one of four genes within the MMR pathway (MLH1, MSH2, MSH6 and PMS2) results in Lynch syndrome (LS). LS is an autosomal dominant condition that predisposes ...
Source: Clinical Genetics - Category: Genetics & Stem Cells Authors: Tags: Clin Genet Source Type: research
Conclusion The use of genetic testing and preoperative imaging studies should be considered to be invaluable tools for detecting synchronous malignancies. Practicing physicians should pay more attention to the risk of simultaneous separate primary malignancies.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
ConclusionsdMMR biliary tract cancers associated with LS are rare but long-term outcomes may be more favorable than contemporaneous cohorts of non-Lynch-associated cholangiocarcinomas. Given the emerging promise of immunotherapy for patients with dMMR malignancies, tumor testing for dMMR followed by confirmatory germline testing should be considered in patients with BTC and a personal history of other LS cancers.
Source: Journal of Gastrointestinal Cancer - Category: Cancer & Oncology Source Type: research
This study aimed to provide a detailed examination of how promotional health information related to Lynch syndrome impacts laypeople’s discussions on a social media platform (Twitter) in terms of topic awareness and attitudes. Methods: We used topic modeling and sentiment analysis techniques on Lynch syndrome–related tweets to answer the following research questions (RQs): (1) what are the most discussed topics in Lynch syndrome–related tweets?; (2) how promotional Lynch syndrome–related information on Twitter affects laypeople’s discussions?; and (3) what impact do the Lynch syndrome awarenes...
Source: Journal of Medical Internet Research - Category: General Medicine Authors: Source Type: research
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Source: Human Mutation - Category: Genetics & Stem Cells Authors: Tags: METHODS Source Type: research
Carcinogenesis in Lynch syndrome involves fast progression of adenomas to colorectal cancer (CRC) due to microsatellite instability. The role of sessile serrated lesions (SSLs) and the serrated neoplasia pathway in these patients is unknown. The aim of this matched case-control study was to compare endoscopic detection rates and distribution of SSLs in Lynch syndrome patients to a matched control population.
Source: Gastrointestinal Endoscopy - Category: Gastroenterology Authors: Source Type: research
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