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https://www.readbyqxmd.com/read/27898592/the-hepatitis-c-virus-nonstructural-protein-3-q80k-polymorphism-is-frequently-detected-and-transmitted-among-hiv-infected-msm-in-the-netherlands
#1
Astrid M Newsum, Cynthia K Y Ho, Faydra I Lieveld, Thijs J W van de Laar, Sylvie M Koekkoek, Sjoerd P Rebers, Jan T M van der Meer, Anne M J Wensing, Greet J Boland, Joop E Arends, Karel J van Erpecum, Maria Prins, Richard Molenkamp, Janke Schinkel
OBJECTIVES: The Q80K polymorphism is a naturally occurring resistance-associated variant in the hepatitis C virus (HCV) nonstructural protein 3 (NS3) region and is likely transmissible between hosts. This study describes the Q80K origin and prevalence among HCV risk groups in the Netherlands and examines whether Q80K is linked to specific transmission networks. DESIGN AND METHODS: Stored blood samples from HCV genotype 1a-infected patients were used for PCR and sequencing to reconstruct the NS3 maximum likelihood phylogeny...
January 2, 2017: AIDS
https://www.readbyqxmd.com/read/27889571/-new-cancer-genes-and-inherited-colorectal-cancer-risk-coincidence-or-causality
#2
EDITORIAL
Matthew B Yurgelun, C Richard Boland
No abstract text is available yet for this article.
November 23, 2016: Gastroenterology
https://www.readbyqxmd.com/read/27769517/recommendations-on-fecal-immunochemical-testing-to-screen-for-colorectal-neoplasia-a-consensus-statement-by-the-us-multi-society-task-force-on-colorectal-cancer
#3
Douglas J Robertson, Jeffrey K Lee, C Richard Boland, Jason A Dominitz, Francis M Giardiello, David A Johnson, Tonya Kaltenbach, David Lieberman, Theodore R Levin, Douglas K Rex
The use of the fecal occult blood test (FOBT) for colorectal cancer (CRC) screening is supported by randomized trials demonstrating effectiveness in cancer prevention and widely recommended by guidelines for this purpose. The fecal immunochemical test (FIT), as a direct measure of human hemoglobin in stool has a number of advantages relative to conventional FOBT and is increasingly used relative to that test. This review summarizes current evidence for FIT in colorectal neoplasia detection and the comparative effectiveness of FIT relative to other commonly used CRC screening modalities...
October 18, 2016: Gastroenterology
https://www.readbyqxmd.com/read/27769516/recommendations-on-fecal-immunochemical-testing-to-screen-for%C3%A2-colorectal-neoplasia-a-consensus-statement-by-the-us-multi-society-task-force-on-colorectal-cancer
#4
Douglas J Robertson, Jeffrey K Lee, C Richard Boland, Jason A Dominitz, Francis M Giardiello, David A Johnson, Tonya Kaltenbach, David Lieberman, Theodore R Levin, Douglas K Rex
No abstract text is available yet for this article.
October 4, 2016: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/27753435/recommendations-on-fecal-immunochemical-testing-to-screen-for-colorectal-neoplasia-a-consensus-statement-by-the-us-multi-society-task-force-on-colorectal-cancer
#5
Douglas J Robertson, Jeffrey K Lee, C Richard Boland, Jason A Dominitz, Francis M Giardiello, David A Johnson, Tonya Kaltenbach, David Lieberman, Theodore R Levin, Douglas K Rex
The use of the fecal occult blood test (FOBT) for colorectal cancer (CRC) screening is supported by randomized trials demonstrating effectiveness in cancer prevention and widely recommended by guidelines for this purpose. The fecal immunochemical test (FIT), as a direct measure of human hemoglobin in stool has a number of advantages relative to conventional FOBT and is increasingly used relative to that test. This review summarizes current evidence for FIT in colorectal neoplasia detection and the comparative effectiveness of FIT relative to other commonly used CRC screening modalities...
October 18, 2016: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/27662552/the-hepatitis-c-virus-ns3-q80k-polymorphism-is-frequently-detected-and-transmitted-among-hiv-infected-msm-in-the-netherlands
#6
Astrid M Newsum, Cynthia K Y Ho, Faydra I Lieveld, Thijs J W Van De Laar, Sylvie M Koekkoek, Sjoerd P Rebers, Jan T M Van Der Meer, Anne M J Wensing, Greet J Boland, Joop E Arends, Karel J Van Erpecum, Maria Prins, Richard Molenkamp, Janke Schinkel
OBJECTIVES: The Q80K polymorphism is a naturally occurring resistance-associated variant (RAV) in the hepatitis C virus (HCV) NS3 region and is likely transmissible between hosts. This study describes the Q80K origin and prevalence among HCV risk groups in the Netherlands and examines whether Q80K is linked to specific transmission networks. DESIGN AND METHODS: Stored blood samples from HCV genotype 1a infected patients were used for PCR and sequencing to reconstruct the NS3 maximum likelihood phylogeny...
September 20, 2016: AIDS
https://www.readbyqxmd.com/read/27553833/exportin-5-functions-as-an-oncogene-and-a-potential-therapeutic-target-in-colorectal-cancer
#7
Kunitoshi Shigeyasu, Yoshinaga Okugawa, Shusuke Toden, C Richard Boland, Ajay Goel
OBJECTIVE: Dysregulated expression of microRNAs (miRNAs) has emerged as a hallmark feature in human cancers. Exportin-5 (XPO5), a karyopherin family member, is a key protein responsible for transporting precursor miRNAs from the nucleus to the cytoplasm. While XPO5 is one of the key regulators of miRNA biogenesis, its functional role and potential clinical significance in colorectal cancer (CRC) remains unclear. DESIGN: The expression levels of XPO5 were initially assessed in three genomic datasets, followed by determination and validation of the relationship between XPO5 expression and clinicopathological features in two independent CRC patient cohorts...
August 23, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27530657/selenium-supplementation-for-prevention-of-colorectal-adenomas-and-risk-of-associated-type-2-diabetes
#8
Patricia A Thompson, Erin L Ashbeck, Denise J Roe, Liane Fales, Julie Buckmeier, Fang Wang, Achyut Bhattacharyya, Chiu-Hsieh Hsu, H H Sherry Chow, Dennis J Ahnen, C Richard Boland, Russell I Heigh, David E Fay, Stanley R Hamilton, Elizabeth T Jacobs, Maria Elena Martinez, David S Alberts, Peter Lance
BACKGROUND: Selenium supplementation may help to prevent colorectal cancer; as precursors of colorectal cancer, colorectal adenomas are a surrogate for colorectal cancer. Selenium supplementation may increase risk of type 2 diabetes (T2D). METHODS: The Selenium and Celecoxib (Sel/Cel) Trial was a randomized, placebo controlled trial of selenium 200 µg daily as selenized yeast and celecoxib 400 mg once daily, alone or together, for colorectal adenoma prevention...
December 2016: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/27530656/celecoxib-for-the-prevention-of-colorectal-adenomas-results-of-a-suspended-randomized-controlled-trial
#9
Patricia A Thompson, Erin L Ashbeck, Denise J Roe, Liane Fales, Julie Buckmeier, Fang Wang, Achyut Bhattacharyya, Chiu-Hsieh Hsu, Sherry H H Chow, Dennis J Ahnen, C Richard Boland, Russell I Heigh, David E Fay, Stanley R Hamilton, Elizabeth T Jacobs, Elena Maria Martinez, David S Alberts, Peter Lance
BACKGROUND: Cyclooxygenase (COX)-2 inhibitors such as celecoxib were designed to preserve anti-inflammatory activity without inhibiting COX-1. Downregulation of COX-2 inhibits colorectal carcinogenesis. METHODS: The Selenium and Celecoxib Trial was a randomized, placebo-controlled trial of once-daily selenium 200 µg and celecoxib 400 mg, alone or together, for colorectal adenoma prevention. Men and women between age 40 and 80 years were eligible following colonoscopic removal of adenomas...
December 2016: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/27493108/%C3%A2-resistance-associated-polymorphisms-in-dutch-hepatitis-c-genotype-1a-patients-with-and-without-hiv-infection
#10
Faydra I Lieveld, Niels Swaans, Astrid M Newsum, Cynthia K Y Ho, Janke Schinkel, Richard Molenkamp, Jan T M van der Meer, Joop E Arends, Andy I M Hoepelman, Anne M J Wensing, Peter D Siersema, Karel J van Erpecum, Greet J Boland
UNLABELLED:  Background and aim. Resistance-associated variants (RAVs) on the NS3 region of the hepatitis C virus (HCV) may be relevant for antiviral therapy, but data in human immunodeficiency virus (HIV) coinfected patients are scarce. We assessed frequencies of NS3 RAVs in patients infected with HCV genotype 1a with or without HIV coinfection. MATERIAL AND METHODS: HCV NS3 amino acids 1-181 were sequenced by the Sanger method and analyzed for RAVs. RAVs and their distribution between HCV genotype 1a clade I and II viruses were compared between HIV-infected versus HIV-uninfected patients...
September 2016: Annals of Hepatology
https://www.readbyqxmd.com/read/27258162/understanding-the-contribution-of-family-history-to-colorectal-cancer-risk-and-its-clinical-implications-a-state-of-the-science-review
#11
REVIEW
Jan T Lowery, Dennis J Ahnen, Paul C Schroy, Heather Hampel, Nancy Baxter, C Richard Boland, Randall W Burt, Lynn Butterly, Megan Doerr, Mary Doroshenk, W Gregory Feero, Nora Henrikson, Uri Ladabaum, David Lieberman, Elizabeth G McFarland, Susan K Peterson, Martha Raymond, N Jewel Samadder, Sapna Syngal, Thomas K Weber, Ann G Zauber, Robert Smith
Persons with a family history (FH) of colorectal cancer (CRC) or adenomas that are not due to known hereditary syndromes have an increased risk for CRC. An understanding of these risks, screening recommendations, and screening behaviors can inform strategies for reducing the CRC burden in these families. A comprehensive review of the literature published within the past 10 years has been performed to assess what is known about cancer risk, screening guidelines, adherence and barriers to screening, and effective interventions in persons with an FH of CRC and to identify FH tools used to identify these individuals and inform care...
September 1, 2016: Cancer
https://www.readbyqxmd.com/read/27247567/novel-mutations-in-mlh1-and-msh2-genes-in-mexican-patients-with-lynch-syndrome
#12
Jose Miguel Moreno-Ortiz, María de la Luz Ayala-Madrigal, Jorge Román Corona-Rivera, Manuel Centeno-Flores, Víctor Maciel-Gutiérrez, Ramón Antonio Franco-Topete, Juan Armendáriz-Borunda, Erin Hotchkiss, Lucia Pérez-Carbonell, Jennifer Rhees, Clement Richard Boland, Melva Gutiérrez-Angulo
Background. Lynch Syndrome (LS) is characterized by germline mutations in the DNA mismatch repair (MMR) genes MLH1, MSH2, MSH6, and PMS2. This syndrome is inherited in an autosomal dominant pattern and is characterized by early onset colorectal cancer (CRC) and extracolonic tumors. The aim of this study was to identify mutations in MMR genes in three Mexican patients with LS. Methods. Immunohistochemical analysis was performed as a prescreening method to identify absent protein expression. PCR, Denaturing High Performance Liquid Chromatography (dHPLC), and Sanger sequencing complemented the analysis...
2016: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/27138978/presentation-of-the-julius-m-friedenwald-medal-to-c-richard-boland-md-agaf
#13
EDITORIAL
John M Carethers, Ajay Goel
No abstract text is available yet for this article.
June 2016: Gastroenterology
https://www.readbyqxmd.com/read/27064256/genome-wide-association-study-identifies-five-new-susceptibility-loci-for-primary-angle-closure-glaucoma
#14
Chiea Chuen Khor, Tan Do, Hongyan Jia, Masakazu Nakano, Ronnie George, Khaled Abu-Amero, Roopam Duvesh, Li Jia Chen, Zheng Li, Monisha E Nongpiur, Shamira A Perera, Chunyan Qiao, Hon-Tym Wong, Hiroshi Sakai, Mônica Barbosa de Melo, Mei-Chin Lee, Anita S Chan, Yaakub Azhany, Thi Lam Huong Dao, Yoko Ikeda, Rodolfo A Perez-Grossmann, Tomasz Zarnowski, Alexander C Day, Jost B Jonas, Pancy O S Tam, Tuan Anh Tran, Humaira Ayub, Farah Akhtar, Shazia Micheal, Paul T K Chew, Leyla A Aljasim, Tanuj Dada, Tam Thi Luu, Mona S Awadalla, Naris Kitnarong, Boonsong Wanichwecharungruang, Yee Yee Aung, Jelinar Mohamed-Noor, Saravanan Vijayan, Sripriya Sarangapani, Rahat Husain, Aliza Jap, Mani Baskaran, David Goh, Daniel H Su, Huaizhou Wang, Vernon K Yong, Leonard W Yip, Tuyet Bach Trinh, Manchima Makornwattana, Thanh Thu Nguyen, Edgar U Leuenberger, Ki-Ho Park, Widya Artini Wiyogo, Rajesh S Kumar, Celso Tello, Yasuo Kurimoto, Suman S Thapa, Kessara Pathanapitoon, John F Salmon, Yong Ho Sohn, Antonio Fea, Mineo Ozaki, Jimmy S M Lai, Visanee Tantisevi, Chaw Chaw Khaing, Takanori Mizoguchi, Satoko Nakano, Chan-Yun Kim, Guangxian Tang, Sujie Fan, Renyi Wu, Hailin Meng, Thi Thuy Giang Nguyen, Tien Dat Tran, Morio Ueno, Jose Maria Martinez, Norlina Ramli, Yin Mon Aung, Rigo Daniel Reyes, Stephen A Vernon, Seng Kheong Fang, Zhicheng Xie, Xiao Yin Chen, Jia Nee Foo, Kar Seng Sim, Tina T Wong, Desmond T Quek, Rengaraj Venkatesh, Srinivasan Kavitha, Subbiah R Krishnadas, Nagaswamy Soumittra, Balekudaru Shantha, Boon-Ang Lim, Jeanne Ogle, José P C de Vasconcellos, Vital P Costa, Ricardo Y Abe, Bruno B de Souza, Chelvin C Sng, Maria C Aquino, Ewa Kosior-Jarecka, Guillermo Barreto Fong, Vania Castro Tamanaja, Ricardo Fujita, Yuzhen Jiang, Naushin Waseem, Sancy Low, Huan Nguyen Pham, Sami Al-Shahwan, E Randy Craven, Muhammad Imran Khan, Rrima Dada, Kuldeep Mohanty, Muneeb A Faiq, Alex W Hewitt, Kathryn P Burdon, Eng Hui Gan, Anuwat Prutthipongsit, Thipnapa Patthanathamrongkasem, Mary Ann T Catacutan, Irene R Felarca, Chona S Liao, Emma Rusmayani, Vira Wardhana Istiantoro, Giulia Consolandi, Giulia Pignata, Carlo Lavia, Prin Rojanapongpun, Lerprat Mangkornkanokpong, Sunee Chansangpetch, Jonathan C H Chan, Bonnie N K Choy, Jennifer W H Shum, Hlaing May Than, Khin Thida Oo, Aye Thi Han, Victor H Yong, Xiao-Yu Ng, Shuang Ru Goh, Yaan Fun Chong, Martin L Hibberd, Mark Seielstad, Eileen Png, Sarah J Dunstan, Nguyen Van Vinh Chau, Jinxin Bei, Yi Xin Zeng, Abhilasha Karkey, Buddha Basnyat, Francesca Pasutto, Daniela Paoli, Paolo Frezzotti, Jie Jin Wang, Paul Mitchell, John H Fingert, R Rand Allingham, Michael A Hauser, Soon Thye Lim, Soo Hong Chew, Richard P Ebstein, Anavaj Sakuntabhai, Kyu Hyung Park, Jeeyun Ahn, Greet Boland, Harm Snippe, Richard Stead, Raquel Quino, Su Nyunt Zaw, Urszula Lukasik, Rohit Shetty, Mimiwati Zahari, Hyoung Won Bae, Nay Lin Oo, Toshiaki Kubota, Anita Manassakorn, Wing Lau Ho, Laura Dallorto, Young Hoon Hwang, Christine A Kiire, Masako Kuroda, Zeiras Eka Djamal, Jovell Ian M Peregrino, Arkasubhra Ghosh, Jin Wook Jeoung, Tung S Hoan, Nuttamon Srisamran, Thayanithi Sandragasu, Saw Htoo Set, Vi Huyen Doan, Shomi S Bhattacharya, Ching-Lin Ho, Donald T Tan, Ramanjit Sihota, Seng-Chee Loon, Kazuhiko Mori, Shigeru Kinoshita, Anneke I den Hollander, Raheel Qamar, Ya-Xing Wang, Yik Y Teo, E-Shyong Tai, Curt Hartleben-Matkin, David Lozano-Giral, Seang Mei Saw, Ching-Yu Cheng, Juan C Zenteno, Chi Pui Pang, Huong T T Bui, Owen Hee, Jamie E Craig, Deepak P Edward, Michiko Yonahara, Jamil Miguel Neto, Maria L Guevara-Fujita, Liang Xu, Robert Ritch, Ahmad Tajudin Liza-Sharmini, Tien Y Wong, Saleh Al-Obeidan, Nhu Hon Do, Periasamy Sundaresan, Clement C Tham, Paul J Foster, Lingam Vijaya, Kei Tashiro, Eranga N Vithana, Ningli Wang, Tin Aung
Primary angle closure glaucoma (PACG) is a major cause of blindness worldwide. We conducted a genome-wide association study (GWAS) followed by replication in a combined total of 10,503 PACG cases and 29,567 controls drawn from 24 countries across Asia, Australia, Europe, North America, and South America. We observed significant evidence of disease association at five new genetic loci upon meta-analysis of all patient collections. These loci are at EPDR1 rs3816415 (odds ratio (OR) = 1.24, P = 5.94 × 10(-15)), CHAT rs1258267 (OR = 1...
May 2016: Nature Genetics
https://www.readbyqxmd.com/read/27038793/recent-discoveries-in-the-molecular-genetics-of-lynch-syndrome
#15
C Richard Boland
Lynch syndrome is the inherited predisposition to cancer caused by a germline mutation in a DNA mismatch repair gene. The consequent tumors have a characteristic microsatellite instability (MSI) phenotype. Genomic sequencing of Lynch syndrome-associated colorectal cancers (CRCs) has demonstrated that these tumors have a substantially greater number of mutations than non-MSI CRCs, and that the target mutations driving tumor behavior are also different from what occurs in sporadic tumors. There are multiple non-Lynch syndrome entities that can create clinical confusion with that disease, including the acquired methylation of MLH1, Lynch-like syndrome, and Familial CRC-Type X...
July 2016: Familial Cancer
https://www.readbyqxmd.com/read/26960273/correspondence-reply-to-sema4a-variation-and-risk-of-colorectal-cancer
#16
LETTER
Heinz Sill, Eduard Schulz, Verena Steinke-Lange, C Richard Boland
No abstract text is available yet for this article.
2016: Nature Communications
https://www.readbyqxmd.com/read/26892199/colonoscopy-surveillance-after-colorectal-cancer-resection-recommendations-of-the-us-multi-society-task-force-on-colorectal-cancer
#17
REVIEW
Charles J Kahi, C Richard Boland, Jason A Dominitz, Francis M Giardiello, David A Johnson, Tonya Kaltenbach, David Lieberman, Theodore R Levin, Douglas J Robertson, Douglas K Rex
The US Multi-Society Task Force has developed updated recommendations to guide health care providers with the surveillance of patients after colorectal cancer (CRC) resection with curative intent. This document is based on a critical review of the literature regarding the role of colonoscopy, flexible sigmoidoscopy, endoscopic ultrasound, fecal testing and CT colonography in this setting. The document addresses the effect of surveillance, with focus on colonoscopy, on patient survival after CRC resection, the appropriate use and timing of colonoscopy for perioperative clearing and for postoperative prevention of metachronous CRC, specific considerations for the detection of local recurrence in the case of rectal cancer, as well as the place of CT colonography and fecal tests in post-CRC surveillance...
March 2016: Gastroenterology
https://www.readbyqxmd.com/read/26871541/colonoscopy-surveillance-after-colorectal-cancer-resection-recommendations-of-the-us-multi-society-task-force-on-colorectal-cancer
#18
Charles J Kahi, C Richard Boland, Jason A Dominitz, Francis M Giardiello, David A Johnson, Tonya Kaltenbach, David Lieberman, Theodore R Levin, Douglas J Robertson, Douglas K Rex
The US Multi-Society Task Force has developed updated recommendations to guide health care providers with the surveillance of patients after colorectal cancer (CRC) resection with curative intent. This document is based on a critical review of the literature regarding the role of colonoscopy, flexible sigmoidoscopy, endoscopic ultrasound, fecal testing and CT colonography in this setting. The document addresses the effect of surveillance, with focus on colonoscopy, on patient survival after CRC resection, the appropriate use and timing of colonoscopy for perioperative clearing and for postoperative prevention of metachronous CRC, specific considerations for the detection of local recurrence in the case of rectal cancer, as well as the place of CT colonography and fecal tests in post-CRC surveillance...
March 2016: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/26802191/colonoscopy-surveillance-after-colorectal-cancer-resection-recommendations-of-the-us-multi-society-task-force-on-colorectal-cancer
#19
Charles J Kahi, C Richard Boland, Jason A Dominitz, Francis M Giardiello, David A Johnson, Tonya Kaltenbach, David Lieberman, Theodore R Levin, Douglas J Robertson, Douglas K Rex
No abstract text is available yet for this article.
March 2016: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/26789877/prognostic-subgroups-among-patients-with-stage-ii-colon-cancer
#20
COMMENT
C Richard Boland, Ajay Goel
Colon cancer has traditionally been treated surgically. However, many cases of colon cancer are systemic at the time of diagnosis, and apparently curative surgery is followed at a later date by tumor recurrence as a consequence of circulating tumor cells before the surgery. Adjuvant medical therapies are designed to prevent recurrences after surgical resection. The current standard for clinical prognostication relies principally on pathological staging. In early-stage colon cancers (stages I and II), all the tumor is contained within the wall of the colon...
January 21, 2016: New England Journal of Medicine
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