Dennis J. Ahnen

14.5k total citations · 2 hit papers
108 papers, 5.8k citations indexed

About

Dennis J. Ahnen is a scholar working on Oncology, Pathology and Forensic Medicine and Molecular Biology. According to data from OpenAlex, Dennis J. Ahnen has authored 108 papers receiving a total of 5.8k indexed citations (citations by other indexed papers that have themselves been cited), including 49 papers in Oncology, 45 papers in Pathology and Forensic Medicine and 26 papers in Molecular Biology. Recurrent topics in Dennis J. Ahnen's work include Genetic factors in colorectal cancer (39 papers), Colorectal Cancer Screening and Detection (36 papers) and Colorectal Cancer Treatments and Studies (21 papers). Dennis J. Ahnen is often cited by papers focused on Genetic factors in colorectal cancer (39 papers), Colorectal Cancer Screening and Detection (36 papers) and Colorectal Cancer Treatments and Studies (21 papers). Dennis J. Ahnen collaborates with scholars based in United States, Canada and Australia. Dennis J. Ahnen's co-authors include Swati Patel, John A. Baron, William R. Brown, Rifat Pamukcu, Richard E. Sampliner, Gary A. Piazza, Han Li, Francisco C. Ramirez, Stephen J. Sontag and Thomas Schnell and has published in prestigious journals such as JAMA, Journal of Clinical Investigation and Journal of Clinical Oncology.

In The Last Decade

Dennis J. Ahnen

106 papers receiving 5.7k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Long-term Outcome of Medical and Surgical Therapies for Gastroesophageal Reflux Disease

2001 648 citations Stuart J. Spechler, Edward Lee et al. JAMA profile →
The Increasing Incidence of Young-Onset Colorectal Cancer: A Call to Action

2014 342 citations Dennis J. Ahnen et al. profile →

Peers

Countries citing papers authored by Dennis J. Ahnen

Since Specialization

Citations

This map shows the geographic impact of Dennis J. Ahnen's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Dennis J. Ahnen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Dennis J. Ahnen more than expected).

Fields of papers citing papers by Dennis J. Ahnen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Dennis J. Ahnen. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Dennis J. Ahnen. The network helps show where Dennis J. Ahnen may publish in the future.

Co-authorship network of co-authors of Dennis J. Ahnen

This figure shows the co-authorship network connecting the top 25 collaborators of Dennis J. Ahnen. A scholar is included among the top collaborators of Dennis J. Ahnen based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Dennis J. Ahnen. Dennis J. Ahnen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	No Evidence for Posttreatment Effects of Vitamin D and Calcium Supplementation on Risk of Colorectal Adenomas in a Randomized Trial 2019 ·Cancer Prevention Research ·Audrey H. Calderwood, John A. Baron, Leila A. Mott, Dennis J. Ahnen, Roberd M. Bostick, Jane C. Figueiredo, Michael N. Passarelli, Judy R. Rees, Douglas J. Robertson, Elizabeth L. Barry	25
2	Urinary Metabolites of Prostanoids and Risk of Recurrent Colorectal Adenomas in the Aspirin/Folate Polyp Prevention Study (AFPPS) 2015 ·Cancer Prevention Research ·Veronika Fedirko, Patrick T. Bradshaw, Jane C. Figueiredo, Robert S. Sandler, Elizabeth L. Barry, Dennis J. Ahnen, Ginger L. Milne, Robert S. Bresalier, John A. Baron	105
3	Genetic Variants inCYP2R1,CYP24A1, andVDRModify the Efficacy of Vitamin D₃Supplementation for Increasing Serum 25-Hydroxyvitamin D Levels in a Randomized Controlled Trial 2014 ·The Journal of Clinical Endocrinology & Metabolism ·Elizabeth L. Barry, Judy R. Rees, Janet L. Peacock, Leila A. Mott, Christopher I. Amos, Roberd M. Bostick, Jane C. Figueiredo, Dennis J. Ahnen, Robert S. Bresalier, Carol A. Burke, John A. Baron	124
4	Identification and characterization of functional risk variants for colorectal cancer mapping to chromosome 11q23.1 2013 ·Human Molecular Genetics ·Michela Biancolella, Barbara K. Fortini, (unknown), Sarah J. Plummer, Gustavo Mendoza-Fandiño, Jaana Hartiala, Michael J. Hitchler, Chunli Yan, Fredrick R. Schumacher, David V. Conti, Christopher K. Edlund, Houtan Noushmehr, Simon G. Coetzee, Robert S. Bresalier, Dennis J. Ahnen, Elizabeth L. Barry, Benjamin P. Berman, Judd C. Rice, Gerhard A. Coetzee, Graham Casey	31
5	Association between hypermethylation of DNA repetitive elements in white blood cell DNA and early-onset colorectal cancer 2013 ·Epigenetics ·Rhiannon Walters, Elizabeth Williamson, Dallas R. English, Joanne Young, Christophe Rosty, Mark Clendenning, Michael D. Walsh, Susan Parry, Dennis J. Ahnen, John A. Baron, Aung Ko Win, Graham G. Giles, John L. Hopper, Mark A. Jenkins, Daniel D. Buchanan	38
6	BRAF Mutation Status and Survival after Colorectal Cancer Diagnosis According to Patient and Tumor Characteristics 2012 ·Cancer Epidemiology Biomarkers & Prevention ·Amanda I. Phipps, Daniel D. Buchanan, Karen W. Makar, Andrea N. Burnett‐Hartman, Anna E. Coghill, Michael N. Passarelli, John A. Baron, Dennis J. Ahnen, Aung Ko Win, John D. Potter, Polly A. Newcomb	97
7	CYP2C9 variants increase risk of colorectal adenoma recurrence and modify associations with smoking but not aspirin treatment 2012 ·Cancer Causes & Control ·Elizabeth L. Barry, Elizabeth M. Poole, John A. Baron, Karen W. Makar, Leila A. Mott, Robert S. Sandler, Dennis J. Ahnen, Robert S. Bresalier, Gail McKeown‐Eyssen, Cornelia M. Ulrich	11
8	Activating mutation in MET oncogene in familial colorectal cancer 2011 ·BMC Cancer ·Deborah W. Neklason, (unknown), (unknown), Ann G. Schwartz, Hoda Anton‐Culver, Constance A. Griffin, Dennis J. Ahnen, Joellen M. Schildkraut, Gail E. Tomlinson, Louise C. Strong, Alexander R. Miller, Jill E. Stopfer, Randall W. Burt	37
9	Sulindac Metabolites Induce Proteosomal and Lysosomal Degradation of the Epidermal Growth Factor Receptor 2010 ·Cancer Prevention Research ·(unknown), Dennis J. Ahnen, Pamela L. Rice	10
10	Association between Folate Levels and CpG Island Hypermethylation in Normal Colorectal Mucosa 2010 ·Cancer Prevention Research ·Kristin Wallace, Maria V. Grau, A. Joan Levine, Lanlan Shen, Randala Hamdan, Han Y. H. Chen, Jiang Gui, Robert W. Haile, Elizabeth L. Barry, Dennis J. Ahnen, Gail McKeown‐Eyssen, John A. Baron, Jean‐Pierre J. Issa	88
11	Difluoromethylornithine Plus Sulindac for the Prevention of Sporadic Colorectal Adenomas: A Randomized Placebo-Controlled, Double-Blind Trial 2008 ·Cancer Prevention Research ·Frank L. Meyskens, Christine E. McLaren, Daniel Pelot, Sharon Fujikawa-Brooks, Philip M. Carpenter, Ernest T. Hawk, Gary J. Kelloff, Michael J. Lawson, Jayashri Kidao, John A. McCracken, Gregory Albers, Dennis J. Ahnen, D. Kim Turgeon, Steven Goldschmid, Peter Lance, Curt H. Hagedorn, Daniel L. Gillen, Eugene W. Gerner	392
12	Ornithine Decarboxylase Polymorphism Modification of Response to Aspirin Treatment for Colorectal Adenoma Prevention 2006 ·JNCI Journal of the National Cancer Institute ·Elizabeth L. Barry, John A. Baron, (unknown), Maria V. Grau, Carol A. Burke, Robert S. Sandler, Dennis J. Ahnen, Robert W. Haile, Thomas G. O’Brien	31
13	Decreases in gamma-tocopherol, but not alpha-tocopherol, with a low-fat diet 2005 ·Cancer Research ·Bernard F. Cole, John A. Baron, Robert S. Sandler, Robert W. Haile, Dennis J. Ahnen, Robert S. Bresalier, Gail McKeown‐Eyssen, Robert W. Summers, Richard Rothstein, Carol A. Burke, Dale C. Snover, Timothy R. Church, Tim Byers	9
14	Ki-ras proto-oncogene mutations in sporadic colorectal adenomas: Relationship to histologic and clinical characteristics 2001 ·Gastroenterology ·Terese H. Maltzman, (unknown), Marı́a Elena Martı́nez, Tim Byers, (unknown), James R. Marshall, Mary E. Reid, Janine G. Einspahr, (unknown), A. K. Bhattacharyya, (unknown), Richard E. Sampliner, David S. Alberts, Dennis J. Ahnen	59
15	Long-term Outcome of Medical and Surgical Therapies for Gastroesophageal Reflux Disease breakdown → 2001 ·JAMA ·Stuart J. Spechler, Edward Lee, Dennis J. Ahnen, Raj K. Goyal, Ikuo Hirano, Francisco C. Ramirez, Jean‐Pierre Raufman, Richard E. Sampliner, Thomas Schnell, Stephen J. Sontag, Z. Reno Vlahčevič, Renée Young, William O. Williford	648
16	Symptomatic Colonic Polyps in Childhood: Not So Benign 1999 ·Journal of Pediatric Gastroenterology and Nutrition ·Edward J. Hoffenberg, Angela Sauaia, Terese H. Maltzman, (unknown), Dennis J. Ahnen	1
17	The sulfone metabolite of sulindac (FGN-1) inhibits rat colonic carcinogenesis but does not inhibit either prostaglandin synthesis or colonic proliferation 1995 ·Gastroenterology ·Dennis J. Ahnen, Gary A. Piazza, (unknown), (unknown), N S Paranka, Randall W. Burt, Rifat Pamukcu	3
18	Do NSAIDs exert their colon cancer chemoprevention activities through the inhibition of mucosal prostaglandin synthetase? 1995 ·Journal of Cellular Biochemistry ·David S. Alberts, Lee J. Hixson, Dennis J. Ahnen, (unknown), Janine G. Einspahr, N S Paranka, Klaus Brendel, Paul H. Gross, Rifat Pamukcu, Randall W. Burt	84
19	The ulceration‐associated cell lineage (UACL) reiterates the Brunner's gland differentiation programme but acquires the proliferative organization of the gastric gland 1994 ·The Journal of Pathology ·Dennis J. Ahnen, Richard Poulsom, G. W. H. Stamp, George Elia, Christine Pike, Rosemary Jeffery, Janet M. Longcroft, Marie‐Christine Rio, Pierre Chambon, Nicholas A. Wright	45
20	Trefoil Peptide Gene Expression in Gastrointestinal Epithelial Cells in Inflammatory Bowel Disease 1992 ·Scandinavian Journal of Gastroenterology ·Nicholas A. Wright, Richard Poulsom, (unknown), (unknown), Catherine Sarraf, Giuliano Elia, Dennis J. Ahnen, Rosemary Jeffery, Janet M. Longcroft, Christine Pike, M. C. Rio, Pierre Chambon	95

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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