Oren Ledder

2.5k total citations
72 papers, 1.3k citations indexed

About

Oren Ledder is a scholar working on Genetics, Epidemiology and Surgery. According to data from OpenAlex, Oren Ledder has authored 72 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 53 papers in Genetics, 31 papers in Epidemiology and 30 papers in Surgery. Recurrent topics in Oren Ledder's work include Inflammatory Bowel Disease (52 papers), Microscopic Colitis (30 papers) and Pharmaceutical studies and practices (8 papers). Oren Ledder is often cited by papers focused on Inflammatory Bowel Disease (52 papers), Microscopic Colitis (30 papers) and Pharmaceutical studies and practices (8 papers). Oren Ledder collaborates with scholars based in Israel, United States and Canada. Oren Ledder's co-authors include Dan Turner, Raffi Lev‐Tzion, Ron Shaoul, Anne M. Griffiths, Amit Assa, Raanan Shamir, Shlomi Cohen, Baruch Yerushalmi, Daniel A. Lemberg and Batia Weiss and has published in prestigious journals such as Gastroenterology, PEDIATRICS and The Journal of Comparative Neurology.

In The Last Decade

Oren Ledder

68 papers receiving 1.3k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Oren Ledder Israel	20	724	484	474	183	171	72	1.3k
Tibor Hlavatý Slovakia	17	702 1.0×	331 0.7×	652 1.4×	75 0.4×	144 0.8×	58	1.3k
Alicia Algaba Spain	20	699 1.0×	480 1.0×	491 1.0×	79 0.4×	105 0.6×	68	1.3k
Javier Martín de Carpi Spain	14	1.1k 1.5×	650 1.3×	729 1.5×	91 0.5×	183 1.1×	57	1.6k
Arun Swaminath United States	16	667 0.9×	475 1.0×	532 1.1×	106 0.6×	107 0.6×	82	1.3k
Daniela Pugliese Italy	23	1.1k 1.5×	338 0.7×	797 1.7×	173 0.9×	172 1.0×	108	1.6k
Zoltán Szepes Hungary	20	541 0.7×	565 1.2×	425 0.9×	68 0.4×	144 0.8×	143	1.3k
Ignacio Marín‐Jiménez Spain	22	871 1.2×	373 0.8×	734 1.5×	82 0.4×	125 0.7×	124	1.5k
Arthur Barrie United States	24	961 1.3×	454 0.9×	813 1.7×	57 0.3×	146 0.9×	84	1.6k
Véred Abitbol France	24	876 1.2×	413 0.9×	727 1.5×	92 0.5×	344 2.0×	66	1.7k
Marc Schwartz United States	23	1.0k 1.4×	459 0.9×	853 1.8×	65 0.4×	92 0.5×	76	1.5k

Countries citing papers authored by Oren Ledder

Since Specialization

Citations

This map shows the geographic impact of Oren Ledder'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 Oren Ledder with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Oren Ledder more than expected).

Fields of papers citing papers by Oren Ledder

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Oren Ledder. 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 Oren Ledder. The network helps show where Oren Ledder may publish in the future.

Co-authorship network of co-authors of Oren Ledder

This figure shows the co-authorship network connecting the top 25 collaborators of Oren Ledder. A scholar is included among the top collaborators of Oren Ledder 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 Oren Ledder. Oren Ledder 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

Stein, Ronen, Dan Turner, Séamus Hussey, et al.. (2025). Baseline Drug Clearance Predicts Outcomes in Children With Inflammatory Bowel Disease Treated With Vedolizumab: Results From the VedoKids Prospective Multicentre Study. Alimentary Pharmacology & Therapeutics. 61(6). 1000–1010. 1 indexed citations

Matar, Manar, Raffi Lev‐Tzion, Oren Ledder, et al.. (2025). A switch to infliximab may be more effective than ustekinumab following adalimumab pharmacodynamic failure in paediatric patients with Crohn’s disease. Digestive and Liver Disease. 57(9). 1787–1793.

Turner, Dan, Gili Focht, Williams Turpin, et al.. (2025). Preclinical stages of Crohn’s disease defined by faecal calprotectin in asymptomatic first-degree relatives: screening framework for prevention trials. Gut. gutjnl–2025.

Zhang, Zhengxiao, Gili Focht, Víctor Manuel Navas‐López, et al.. (2024). Serum Metabolites Relate to Mucosal and Transmural Inflammation in Paediatric Crohn Disease. Journal of Crohn s and Colitis. 18(11). 1832–1844. 2 indexed citations

Atia, Ohad, Shira Greenfeld, Revital Kariv, et al.. (2024). Predictors of Complicated Disease Course in Children and Adults With Ulcerative Colitis: A Nationwide Study From the epi-IIRN. Inflammatory Bowel Diseases. 31(3). 655–664. 3 indexed citations

Turpin, Williams, Oren Ledder, Anne M. Griffiths, et al.. (2024). P244 The first step to IBD prevention exploring rate of pre-clinical inflammation in subset of asymptomatic subjects at risk of IBD: screening stage of the PIONIR trial. Journal of Crohn s and Colitis. 18(Supplement_1). i585–i586. 1 indexed citations

Atia, Ohad, Shira Greenfeld, Revital Kariv, et al.. (2024). Predictors of Complicated Disease Course in Adults and Children With Crohn’s Disease: A Nationwide Study from the epi-IIRN. Inflammatory Bowel Diseases. 30(12). 2370–2379. 3 indexed citations

Focht, Gili, Raffi Lev‐Tzion, Oren Ledder, et al.. (2024). Serological Markers as Predictors of Anti-TNF Response in Children with Crohn’s Disease. Digestive Diseases and Sciences. 70(1). 333–339.

Ledder, Oren, Esther Orlanski‐Meyer, Yiska Loewenberg Weisband, et al.. (2023). Residence in Peripheral Regions and Low Socioeconomic Status Are Associated With Worse Outcomes of Inflammatory Bowel Diseases: A Nationwide Study From the epi-IIRN. Inflammatory Bowel Diseases. 30(1). 1–8. 3 indexed citations

10.

Shitrit, Ariella Bar‐Gil, Eran Israeli, Benjamin Koslowsky, et al.. (2023). P635 Risankizumab - real world Israeli data in severe refractory IBD patients. Journal of Crohn s and Colitis. 17(Supplement_1). i767–i768. 1 indexed citations

11.

Ledder, Oren & Dan Turner. (2023). Multi-item Measures for Paediatric Inflammatory Bowel Diseases: The ABCs of All Those Acronyms. Journal of Crohn s and Colitis. 17(7). 1154–1168. 8 indexed citations

12.

Davidovics, Zev, et al.. (2022). Endoscopic versus fluoroscopic esophageal dilatations in children with esophageal strictures: 10-year experience. Diseases of the Esophagus. 36(1). 1 indexed citations

13.

Orlanski‐Meyer, Esther, Chani Topf‐Olivestone, Oren Ledder, et al.. (2020). Outcomes Following Pouch Formation in Paediatric Ulcerative Colitis. Journal of Pediatric Gastroenterology and Nutrition. 71(3). 346–353. 13 indexed citations

14.

Shamriz, Oded, Anthony Simon, Atar Lev, et al.. (2020). Exogenous interleukin-2 can rescue in-vitro T cell activation and proliferation in patients with a novel capping protein regulator and myosin 1 linker 2 mutation. Clinical & Experimental Immunology. 200(3). 215–227. 8 indexed citations

15.

Ledder, Oren, Robert Lopez, Raffi Lev‐Tzion, et al.. (2020). Early Feeding in Acute Pancreatitis in Children: A Randomized Controlled Trial. PEDIATRICS. 146(3). 12 indexed citations

16.

Assa, Amit, Manar Matar, Dan Turner, et al.. (2019). Proactive Monitoring of Adalimumab Trough Concentration Associated With Increased Clinical Remission in Children With Crohn’s Disease Compared With Reactive Monitoring. Gastroenterology. 157(4). 985–996.e2. 175 indexed citations

17.

Topf‐Olivestone, Chani, Oren Ledder, M. Friedman, et al.. (2017). P158 Pouchitis in paediatric ulcerative colitis: a multicentre longitudinal cohort study from the Porto IBD working group of ESPGHAN. Journal of Crohn s and Colitis. 11(suppl_1). S157–S157. 2 indexed citations

18.

Schechter, Amir, Juan Cristóbal Gana, Ron Shaoul, et al.. (2014). Early endoscopic, laboratory and clinical predictors of poor disease course in paediatric ulcerative colitis. Gut. 64(4). 580–588. 40 indexed citations

19.

Ledder, Oren, Daniel A. Lemberg, Chee Y. Ooi, & Andrew S. Day. (2013). Are Thiopurines Always Contraindicated After Thiopurine‐Induced Pancreatitis in Inflammatory Bowel Disease?. Journal of Pediatric Gastroenterology and Nutrition. 57(5). 583–586. 24 indexed citations

20.

Hanani, Menachem, Oren Ledder, Vladimir Yutkin, et al.. (2003). Regeneration of myenteric plexus in the mouse colon after experimental denervation with benzalkonium chloride. The Journal of Comparative Neurology. 462(3). 315–327. 70 indexed citations

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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