Journal profile · GASTROENTEROLOGY & HEPATOLOGY
Intestinal Research
ISSN 1598-9100 · eISSN 2288-1956 · Korean Association for the Study of Intestinal Diseases · Korea, Republic of
Intestinal Research: CAS Zone 3 · Medicine (2025 upgraded edition); impact factor 4.7 (journal website); diamond open access (no APC); no APC; median 78 days to acceptance (80 articles, last 24 months); 81 articles in 2025; indexed in ESCI and Scopus.
Scope
Aims, scope and focus
Intestinal Research is published by Korean Association for the Study of Intestinal Diseases and is in Zone 3 of Medicine in the CAS Journal Ranking (2025 upgraded edition). By OpenAlex counts of its recent articles, its largest topics are Inflammatory Bowel Disease, Microscopic Colitis and Colorectal Cancer Screening and Detection, together about 45.3% of its articles. (generated from OpenAlex topic counts and CAS ranking data)
Intestinal Research (Intest Res) is the joint official journal of Asian Organization for Crohn's and Colitis (AOCC) and the joint publication of Chinese Society of IBD (CSIBD), Japanese Society for IBD (JSIBD), Korean Association for the Study of Intestinal Diseases (KASID), Taiwan Society of IBD (TSIBD), Colitis and Crohn's Foundation (CCF, India), and Hong Kong IBD Society (HKIBDS). The aim of the journal is to provide broad and in-depth analysis of small and large intestinal diseases, especially inflammatory bowel disease, and to serve as an important medium for the dissemination of state-of-the-art articles on those diseases in the Asia-Pacific region and beyond. In particular, we are interested in studies that highlight the characteristics of inflammatory bowel disease especially in the Asian population. As a journal specialized in clinical and translational research in the lower gastroenterology field, it encompasses multiple aspects of diseases originated from the small and large intestines. The journal also seeks to propagate and exchange useful innovations, both in ideas and in practice, within the research community. As a mode of scholarly communication, it encourages scientific investigation through the rigorous peer-review system and constitutes a qualified and continual platform for sharing studies of researchers and practitioners. Specifically, the journal presents up-to-date coverage of medical researches on the physiology, epidemiology, pathophysiology, clinical presentations, and therapeutic interventions of the small and large intestinal diseases. General topics of interest include inflammatory bowel disease, colon and small intestine cancer or polyp, endoscopy, irritable bowel syndrome and other motility disorders, infectious enterocolitis, intestinal tuberculosis, rare small bowel diseases, and so forth.
From the journal's Aims & Scope
Research area (LetPub): GASTROENTEROLOGY & HEPATOLOGY
Editor-in-chief Toshifumi HibiPublisher website
Editorial board by country: 5 in mainland China (about 12%); most named South Korea 14, Japan 6, Mainland China 5, United States 2, United Kingdom 2 (42 members with a country) Editorial board ↗Publisher website ·
Main research topics OpenAlex counts of recent articles; shares are approximate
- Inflammatory Bowel DiseaseBiochemistry, Genetics and Molecular Biology25.1%
- Microscopic ColitisMedicine12.7%
- Colorectal Cancer Screening and DetectionMedicine7.5%
- Gastric Cancer Management and OutcomesMedicine4.8%
- Autoimmune and Inflammatory DisordersMedicine4.4%
- Clostridium difficile and Clostridium perfringens researchMedicine3.4%
- Gastrointestinal disorders and treatmentsMedicine3.4%
- Gut microbiota and healthBiochemistry, Genetics and Molecular Biology3.2%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Medicine Zone 3
| Level | Category | Zone |
|---|---|---|
| Major | Medicine | Zone 3 |
| Minor | Gastroenterology & Hepatology | Zone 3 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Medicine Zone 3
| Level | Category | Zone |
|---|---|---|
| Major | Medicine | Zone 3 |
| Minor | Gastroenterology & Hepatology | Zone 3 |
Top journal: noReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Not covered
Not covered by this edition.
Database indexing
ESCIScopusDOAJLetPub
International journal early-warning lists: not listed in any editionLetPub
Editions, and major and minor categories, are shown separately and never merged into one zone; check which edition your institution uses before you submit or report.
Metrics
Impact metrics and publication volume
Impact
- Impact factor (publisher)
- 4.7Publisher website ·
- CiteScore 2026-06
- 7.5LetPub ·
- SJR 2026-06
- 1.27LetPub ·
- SNIP 2026-06
- 1.25LetPub ·
- h-index
- 51OpenAlex ·
- i10-index
- 424OpenAlex ·
- 2-year mean citedness
- 2.59OpenAlex ·
- Self-citation rate
- 14.9%LetPub ·
- Share of gold OA articles
- 100%LetPub ·
Volume
- Articles per year
- 71LetPub ·
Articles by year OpenAlex count · 1,136 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 63 | 63 | 8 |
| 2025 | 81 | 81 | 172 |
| 2024 | 59 | 59 | 345 |
| 2023 | 41 | 41 | 478 |
| 2022 | 56 | 56 | 668 |
| 2021 | 27 | 27 | 658 |
Sources count differently and were observed at different times, so each source's own value is kept; "publisher" marks figures from the journal's website.
Review & acceptance
Review time and acceptance
Review time from article dates manuscript dates registered with Crossref · to
78 daysMedian, submission to acceptance · P25–P75 41 days – 112 days
- Acceptance to online
- median 125 days (80 articles)
- Submission to online
- median 213 days
- Sample
- 80 articles with submission and acceptance dates (176 in the window); the latest was accepted on
Only articles that were accepted and published are counted, not the time spent on rejected manuscripts, so this usually runs longer than a publisher's "time to first decision".
Other sources
- Average review time (community reports)
- about 38 weeksLetPub ·
- Submission to publication (journal-reported)
- about 38 weeksDOAJ ·
- Peer review
- Double anonymous peer reviewDOAJ
Community reports come from authors' own submissions (confidence 0.5) and are not a promise from the journal; for publisher figures, the journal's own definitions apply.
Fees & open access
APC and open-access policy
Diamond open access (no APC)DOAJ
Every article is open access and authors pay no article processing charge.
| Source | APC | Fee waiver | License | Observed |
|---|---|---|---|---|
| DOAJ | No APC | No | CC BY-NC | |
| LetPub | No APC | No | — | |
| Publisher website | No APC | — | — |
Other charges and waivers (author guidelines)
- Other fees
- No other fees
- Submission fee
- No submission fee
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Submission
Article types and submission policies (journal website)
What to prepare6 items from the author guidelines
- Abstract
- 200–250 words
- Keywords
- ≥ 3
- Reference style
- Vancouver
- First submission
- Free format: the journal's layout is not required
- Graphical abstract
- Required
- Not considered
- preprint
Article types accepted13
- brief communicationTable 1 shows the recommended maximums of manuscripts according to publication type; however, these requirements are negotiable with the editor. Table 1. Recomm…Length not stated
- case reportTable 1 shows the recommended maximums of manuscripts according to publication type; however, these requirements are negotiable with the editor. Table 1. Recomm…Length not stated
- commentaryTable 1 shows the recommended maximums of manuscripts according to publication type; however, these requirements are negotiable with the editor. Table 1. Recomm…Length not stated
- editorialTable 1 shows the recommended maximums of manuscripts according to publication type; however, these requirements are negotiable with the editor. Table 1. Recomm…Length not stated
- letter to the editorTable 1 shows the recommended maximums of manuscripts according to publication type; however, these requirements are negotiable with the editor. Table 1. Recomm…Length not stated
- letters to the editorTable 1 shows the recommended maximums of manuscripts according to publication type; however, these requirements are negotiable with the editor. Table 1. Recomm…Length not stated
- meta-analysisTable 1 shows the recommended maximums of manuscripts according to publication type; however, these requirements are negotiable with the editor. Table 1. Recomm…Length not stated
- original articleTable 1 shows the recommended maximums of manuscripts according to publication type; however, these requirements are negotiable with the editor. Table 1. Recomm…Length not stated
- perspectiveTable 1 shows the recommended maximums of manuscripts according to publication type; however, these requirements are negotiable with the editor. Table 1. Recomm…Length not stated
- reviewTable 1 shows the recommended maximums of manuscripts according to publication type; however, these requirements are negotiable with the editor. Table 1. Recomm…Length not stated
- review articleTable 1 shows the recommended maximums of manuscripts according to publication type; however, these requirements are negotiable with the editor. Table 1. Recomm…Length not stated
- surveyTable 1 shows the recommended maximums of manuscripts according to publication type; however, these requirements are negotiable with the editor. Table 1. Recomm…Length not stated
- systematic reviewTable 1 shows the recommended maximums of manuscripts according to publication type; however, these requirements are negotiable with the editor. Table 1. Recomm…Length not stated
Policy excerpts from the journal's websiteAuthorship, Conflicts of interest, Data availability, Publication ethics, License & copyright, Open access, Peer review, Plagiarism, Preprints, Self-archiving, Trial registration / reporting guidelines
- Authorship 4. Authorship
According to the ICMJE recommendation, authorship credit should be based on the following four criteria: (1) Substantial contributions to the conception or design of the work; or the acquisition, analysis, or interpretation of data for the work; AND (2) Drafting the work or revising it critically for important intellectual content; AND (3) Final approval of the version to be published; AND (4) Agr…
Source ↗Publisher website ·- Conflicts of interest 3. Conflicts of Interest Statement
All participants in the publication and peer review process—not only authors but also peer reviewers, editors, and Editorial Board members of the journal—must consider their conflicts of interest when fulfilling their roles in the process of article review and publication and must disclose all relationships that could be viewed as potential conflicts of interest. All authors should disclose their …
Source ↗Publisher website ·- Data availability 2. Data Sharing
Intestinal Research encourages data sharing wherever possible, unless this is prevented by ethical, privacy, or confidentiality matters. Authors wishing to do so may deposit their data in a publicly accessible repository and include a link to the digital object identifier (DOI) within the text of the manuscript. Intestinal Research accepts the ICMJE Recommendations for data sharing statement polic…
Source ↗Publisher website ·- Publication ethics 2. Statement of Informed Consent and Ethical Approval
Adheres to ICMJE, DOAJ transparency, and GPP guidelines. Model summary
Studies involving human subjects must retain copies of written informed consent. If the participant is unable to provide it, a legal guardian or parent may provide it instead. Authors may submit any legally recognized form used to obtain the patient's consent as a copy of the informed consent. However, the Institutional Review Board or ethics committee may waive the requirement for informed consen…
Source ↗Publisher website ·- License & copyright COPYRIGHTS AND LICENSE
1. Copyright Authors must declare that the submitted work is their own and that copyright has not been breached in seeking its publication. Copyright in all published material is owned by Korean Association for the Study of Intestinal Diseases (KASID). Each author must sign the Copyright Transfer Agreement form, and the corresponding author is responsible for submitting the completed form upon acc…
Source ↗Publisher website ·- Open access 2. Open Access Policy
Open access under CC BY-NC 4.0. Model summary
Intestinal Research is an open access journal. Articles are distributed under the terms of the Creative Commons License (https://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted noncommercial use, distribution, and reproduction in any medium if the original work is properly cited. For any commercial use of material from the open access version of the journal, permission must be…
Source ↗Publisher website ·- Peer review SUBMISSION & PEER REVIEW PROCESS
Double-blind peer review. Model summary
1. Online Submission All manuscripts should be submitted online via the journal’s online submission system (https://www.editorialmanager.com/irjournal/Default.aspx) by the first or corresponding author. Once you have logged into your account, the online system will lead you through the submission process in a step-by-step orderly process. Submission instructions are available on the website. In ca…
Source ↗Publisher website ·- Plagiarism 6. Originality, Plagiarism, and Duplicate Publication
Plagiarism screening via Similarity Check. Model summary
Redundant or duplicate publication refers to the publication of a paper that overlaps substantially with one already published. Upon receipt, submitted manuscripts are screened for possible plagiarism or duplicate publication using Crossref Similarity Check. If a paper that might be regarded as duplicate or redundant had already been published in another journal or submitted for publication, the a…
Source ↗Publisher website ·- Preprints 4. Preprint Policy
A preprint can be defined as a version of a scholarly paper that precedes formal peer review and publication in a peer reviewed scholarly journal. Intestinal Research allows authors to submit the preprint to the journal. It is not treated as duplicate submission or duplicate publication. Intestinal Research recommends authors to disclose it with DOI in the letter to the editor during the submissio…
Source ↗Publisher website ·- Self-archiving 3. Article Sharing (Author Self-Archiving) Policy
Intestinal Research is an open access journal, which means that authors who publish with us are able to freely share their research in various ways, including on preprint servers, social media platforms, at conferences, and in educational materials, in accordance with our open access policy. However, it should be noted that submitting the same manuscript to multiple journals is strictly prohibited…
Source ↗Publisher website ·- Trial registration / reporting guidelines 3. Adherence to Reporting Guidelines
For specific study designs, such as randomized controlled trials, studies of diagnostic accuracy, meta-analyses, observational studies, and non-randomized studies, we strongly recommend that authors follow and stick to the reporting guidelines relevant to their specific research design. Authors should upload a completed checklist for the appropriate reporting guideline during original submission. …
Source ↗Publisher website ·
Excerpts are quoted from the journal's website; "model summary" lines are written by Workers AI and checked against the text. The journal's website is authoritative.
Profile
Publication details and official links
- Publisher
- Korean Association for the Study of Intestinal Diseases
- Country or region
- Korea, Republic of
- Language
- English
- ISSN
- 1598-9100
- Electronic ISSN
- 2288-1956
- Society / sponsor
- Asian Organization for Crohn’s and Colitis
- Latest issue on the website
- Volume 24 (July 2026)
- Official links
- Journal homepage ↗LetPub
- Submission system ↗Publisher website
- Author guidelines ↗DOAJ
- Aims & Scope ↗DOAJ
- APC information ↗DOAJ
- Open access statement ↗DOAJ
- License & copyright ↗DOAJ
- Peer review process ↗DOAJ
- Editorial board ↗DOAJ
- Plagiarism policy ↗DOAJ
FAQ
Frequently asked questions about Intestinal Research
What CAS zone is Intestinal Research in?
In the 2025 upgraded edition of the CAS Journal Ranking, Intestinal Research is in Zone 3 of Medicine, and in Zone 3 of the minor category Gastroenterology & Hepatology. In the 2026 Xinrui edition it is in Zone 3 of Medicine. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of Intestinal Research?
The journal's website gives an impact factor of 4.7; this is the journal's own figure, as LetPub lists none for it; CiteScore 7.5, h-index 51.
How long does peer review take at Intestinal Research?
Based on the dates recorded on 80 articles published between October 2024 and October 2026 (the last 24 months), the median time from submission to acceptance is 78 days (interquartile range 41–112 days); authors report an average review time of about 38 weeks. Article statistics cover accepted papers only, publisher figures follow the journal's own definitions, and community reports come from authors' own submissions; none is a promise from the journal.
What are the manuscript requirements of Intestinal Research?
According to the journal's author guidelines: Abstract: 200–250 words; Keywords: ≥ 3; Reference style: Vancouver; First submission: Free format: the journal's layout is not required; Graphical abstract: Required. A model extracted these from the author guidelines and each was checked against the text; check the latest version on the journal's website before submitting.
Where are the editorial board members of Intestinal Research based?
Of the 42 board members whose country the journal's board page names, 5 (about 12%) are in mainland China; the countries named most often are South Korea (14), Japan (6) and Mainland China (5). Counted from the institutions listed on the board page; for reference only.
Which databases index Intestinal Research?
According to LetPub and DOAJ records, Intestinal Research is indexed in ESCI, Scopus and DOAJ.
Is Intestinal Research open access, and what is the APC?
Intestinal Research is a diamond open-access journal (no APC). It charges no article processing charge.
Sources and updates
The facts on this page come from LetPub, OpenAlex, Publisher website, DOAJ; every figure is tagged with its source and the date it was observed, and conflicting values are kept per source. LetPub source page: view ↗ (archived 2026-08-25). Last updated: .