Christopher Ma

456 total citations
26 papers, 277 citations indexed

About

Christopher Ma is a scholar working on Genetics, Epidemiology and Molecular Biology. According to data from OpenAlex, Christopher Ma has authored 26 papers receiving a total of 277 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Genetics, 8 papers in Epidemiology and 6 papers in Molecular Biology. Recurrent topics in Christopher Ma's work include Inflammatory Bowel Disease (11 papers), Microscopic Colitis (7 papers) and Eosinophilic Esophagitis (3 papers). Christopher Ma is often cited by papers focused on Inflammatory Bowel Disease (11 papers), Microscopic Colitis (7 papers) and Eosinophilic Esophagitis (3 papers). Christopher Ma collaborates with scholars based in United States, Canada and Italy. Christopher Ma's co-authors include Dawn Wilkins, Vipul Jairath, Dermot McGovern, Silvio Danese, Stefania Vetrano, Niels Vande Casteele, Julián Panés, Azucena Salas, Geert D’Haens and Marjolijn Duijvestein and has published in prestigious journals such as SHILAP Revista de lepidopterología, Gastroenterology and The American Journal of Gastroenterology.

In The Last Decade

Christopher Ma

19 papers receiving 264 citations

Peers

Christopher Ma
Shanmugasundaram Nallasamy United States
Hideki Ando Japan
Jennifer Y. Tong United States
Jiabo Xu China
Guanglin Lei China
Rain Kwan Australia
Ioannis Stathopoulos Greece
Jie Hou China
Lee S. Jacobson United States
Arun Kumar Arunachalam India
Shanmugasundaram Nallasamy United States
Christopher Ma
Citations per year, relative to Christopher Ma Christopher Ma (= 1×) peers Shanmugasundaram Nallasamy

Countries citing papers authored by Christopher Ma

Since Specialization
Citations

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

Fields of papers citing papers by Christopher Ma

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Christopher Ma

This figure shows the co-authorship network connecting the top 25 collaborators of Christopher Ma. A scholar is included among the top collaborators of Christopher Ma 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 Christopher Ma. Christopher Ma is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Ma, Christopher, et al.. (2025). IL23p19 therapies for moderately-to-severely active ulcerative colitis. Expert Opinion on Biological Therapy. 25(4). 363–378.
2.
Vuyyuru, Sudheer K., Yuhong Yuan, Sailish Honap, et al.. (2025). Medical Therapy for Acute Severe Ulcerative Colitis: A Systematic Review With Meta-analysis. Clinical Gastroenterology and Hepatology. 23(13). 2376–2398.
3.
Ma, Christopher, Reena Khanna, Bryan Maguire, et al.. (2025). Development and validation of a novel Endoscopic ulcer Activity Score for Evaluation of Crohn's Disease (EASE-CD) using data from two randomised controlled trials. ˜The œLancet. Gastroenterology & hepatology. 10(8). 746–756.
4.
Fox, Mark A., Cynthia H. Seow, Aldo J. Montaño‐Loza, et al.. (2025). Developing and Evaluating a Bundled Digital Tool to Improve Complex Care and Self-Management of Patients With Inflammatory Bowel Disease: Protocol for a Hybrid Effectiveness-Implementation Study. JMIR Research Protocols. 14. e65659–e65659. 1 indexed citations
5.
6.
Solitano, Virginia, Yuhong Yuan, Siddharth Singh, et al.. (2024). Efficacy and safety of Advanced Combination Treatment in immune-mediated inflammatory disease: A systematic review and meta-analysis of randomized controlled trials. Journal of Autoimmunity. 149. 103331–103331. 12 indexed citations
7.
Solitano, Virginia, Sudheer K. Vuyyuru, Yuhong Yuan, et al.. (2024). Management of complications in patients with an ileostomy: an umbrella review of systematic reviews for the EndOTrial Consortium. International Journal of Colorectal Disease. 39(1). 147–147. 2 indexed citations
8.
Feagan, Brian G., Jean–Frédéric Colombel, Remo Panaccione, et al.. (2024). Early Endoscopic Outcomes After Risankizumab Are Associated With Fewer Hospitalizations and Surgeries in Crohn’s Disease. SHILAP Revista de lepidopterología. 4(1). 100544–100544. 1 indexed citations
9.
Shehab, Mohammad, Christopher Ma, Neeraj Narula, et al.. (2024). Comparative Efficacy of Biologics and Small Molecule in Ulcerative Colitis: A Systematic Review and Network Meta-analysis. Clinical Gastroenterology and Hepatology. 23(2). 250–262. 16 indexed citations
10.
11.
Solitano, Virginia, Malcolm Hogan, Siddharth Singh, et al.. (2024). Placebo Rates in Crohn’s Disease Randomized Clinical Trials: An Individual Patient Data Meta-Analysis. Gastroenterology. 168(2). 344–356. 5 indexed citations
12.
Goodyer, Larry, et al.. (2024). Experiences of community pharmacists in the United Kingdom on the provision of travel health services and associated educational requirements. International Journal of Pharmacy Practice. 32(4). 287–293. 6 indexed citations
13.
Bessissow, Talat, et al.. (2023). Real-world effectiveness and safety of ustekinumab in bio-naive patients with moderate-to-severe Crohn's disease: A Canadian multi-center study. Digestive and Liver Disease. 56(1). 61–69. 3 indexed citations
14.
Solitano, Virginia, D. Brent Polk, Tran M Nguyen, et al.. (2023). Su1723 WITHDRAWAL OF IMMUNOMODULATORS IN PATIENTS WITH INFLAMMATORY BOWEL DISEASE IN REMISSION ON COMBINATION THERAPY: A SYSTEMATIC REVIEW AND META-ANALYSIS. Gastroenterology. 164(6). S–652. 1 indexed citations
15.
Solitano, Virginia, Antonio Facciorusso, Dermot McGovern, et al.. (2023). HLA-DQA1∗05 Genotype and Immunogenicity to Tumor Necrosis Factor-α Antagonists: A Systematic Review and Meta-analysis. Clinical Gastroenterology and Hepatology. 21(12). 3019–3029.e5. 28 indexed citations
16.
Solitano, Virginia, D. Brent Polk, Tran M Nguyen, et al.. (2023). Withdrawal of Immunomodulators or TNF Antagonists in Patients With Inflammatory Bowel Diseases in Remission on Combination Therapy: A Systematic Review and Meta-analysis. Clinical Gastroenterology and Hepatology. 22(1). 22–33.e6. 12 indexed citations
17.
Loiacono, Matthew M., Helen Booth, Rachael Williams, et al.. (2022). The impact of clinical risk conditions on influenza and pneumonia diagnoses in England: a nationally representative retrospective cohort study, 2010–2019. Epidemiology and Infection. 150. e107–e107. 1 indexed citations
18.
Verstockt, Bram, Stefania Vetrano, Azucena Salas, et al.. (2022). Sphingosine 1-phosphate modulation and immune cell trafficking in inflammatory bowel disease. Nature Reviews Gastroenterology & Hepatology. 19(6). 351–366. 89 indexed citations
19.
Bonkovsky, Herbert L., Sean Rudnick, Michelle Moore, et al.. (2022). S1362 Direct-Acting Antivirals [DAA] Are Effective as Sole Treatment of Porphyria Cutanea Tarda (PCT) With Chronic Hepatitis C [CHC]. The American Journal of Gastroenterology. 117(10S). e978–e978.
20.
Ma, Christopher, et al.. (2016). Survey on swarm intelligence based routing protocols for wireless sensor networks: An extensive study. 1944–1949. 58 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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