• Review Article: What are Serrated Colorectal Polyps?

Review Article: What are Serrated Colorectal Polyps?

Serrated polyps comprise hyperplastic polyps, sessile serrated lesions (SSLs), and traditional serrated adenomas (TSAs). Approximately 25% of sporadic colorectal cancers (CRCs) arise from serrated precursor lesions, but there is confusion regarding their terminology, classification, and risk. A review article by Seth D. Crockett and Iris D. Nagtegaal in the October issue of Gastroenterology clarifies

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  • Why Are Patients Cured of HCV Infection Still at Risk for Liver Cancer?

Why Are Patients Cured of HCV Infection Still at Risk for Liver Cancer?

Chronic infection with the hepatitis C virus (HCV) causes epigenetic changes in liver cells that alter gene expression patterns and continue to affect risk for hepatocellular carcinoma (HCC), regardless of patients’ response to direct-activating antiviral (DAA) agents, researchers report in the June issue of Gastroenterology. These alterations might be targeted

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  • Can Surveillance be Extended or Eliminated for Some Patients With Barrett’s Esophagus?

Can Surveillance be Extended or Eliminated for Some Patients With Barrett’s Esophagus?

Two articles in the April issue of Clinical Gastroenterology and Hepatology show that surveillance intervals might be lengthened or even discontinued for subgroups of patients with Barrett’s esophagus. Stable non-dysplastic Barrett’s esophagus (NDBE) has a low risk of progression to high-grade dysplaisa (HGD) or esophageal adenocarcinoma (EAC), Yonne Peters et al

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  • REVIEW: Combining CRISPR-Cas9 and Organoid Technologies to Study Gastrointestinal Diseases

REVIEW: Combining CRISPR-Cas9 and Organoid Technologies to Study Gastrointestinal Diseases

CRISPR-Cas9 technology can be used to engineer organoids for studies of gastrointestinal development and disease pathogenesis. In the February issue of Gastroenterology, Masayuki Fujii et al review derivation of organoids from human gastrointestinal tissues and how CRISPR-Cas9 has advanced studies of the digestive system. CRISPR-Cas9 genome editing technology allows researchers to

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  • Review: Pathogenesis and Prevention of Gastric Cancer

Review: Pathogenesis and Prevention of Gastric Cancer

New diagnostic protocols, effective medical treatments, and recently developed conservative ablative procedures could make gastric cancer a preventable malignancy, says a review article in the December issue of Clinical Gastroenterology and Hepatology. Gastric cancer is 1 of the 5 most common causes of cancer death, and only 30% of patients survive 5

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  • Intestinal Microbes as Carcinogens

Intestinal Microbes as Carcinogens

Fecal microbiota from patients with colorectal cancer (CRC) have carcinogenic properties, researchers report in the December issue of Gastroenterology. Feeding mice stool from patients with colorectal cancer (CRC) increased numbers of polyps, levels of intestinal dysplasia and proliferation, and markers of inflammation in colon, compared with stool from individuals without CRC, the scientists found.

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  • How Can We Study Genetic Heterogeneity Within Hepatocellular Carcinomas?

How Can We Study Genetic Heterogeneity Within Hepatocellular Carcinomas?

Researchers have developed a patient-derived cell line-based model to study how intratumor heterogeneity affects sensitivity of hepatocellular carcinoma (HCC) to different therapeutic agents, reported in the January issue of Gastroenterology. HCCs have a large amount of genetic heterogeneity within each tumor, making them difficult to treat. Multiple regions of tumors

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  • How Does Transforming Growth Factor beta Suppress Colorectal Tumor Development?

How Does Transforming Growth Factor beta Suppress Colorectal Tumor Development?

Researchers review the mechanisms by which loss of transforming growth factor beta (TGFB) proteins contribute to development and progression of colorectal cancer in the January 2017 issue of Gastroenterology. Development and progression of colorectal cancer involve loss of tumor suppressor proteins, including transforming growth factor beta (TGFB) family members. In colon

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  • A Forward Genetic Screen Identifies Suppressors of Hepatocellular Carcinogenesis

A Forward Genetic Screen Identifies Suppressors of Hepatocellular Carcinogenesis

Using 2 powerful high-throughput in vivo screening tools, researchers identified and validated 27 genes as suppressors of hepatocellular carcinoma (HCC), reported in the August issue of Gastroenterology. Their findings support the role of Ras signaling in development of HCC and provide new therapeutic targets. Sorafenib is the only treatment for patients

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  • A Mouse Model for Studying Pancreatic Tumor Resection and Adjuvant Therapy

A Mouse Model for Studying Pancreatic Tumor Resection and Adjuvant Therapy

Researchers have developed mice that develop focal, resectable pancreatic tumors closely resembling human pancreatic ductal adenocarcinomas (PDACs) that can be used to test adjuvant therapies, according to new research in the August issue of Gastroenterology. The authors show that administration of gemcitabine after resection of the tumors activates natural killer (NK) cell-mediated

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