Overview
Submission Instructions
Recent Publications
Frequently Asked Questions
Research Topics
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KC
Korean Circulation Journal is a cardiology journal that publishes article types including Original Research, State of the Art Review, Editorial, and Images in Cardiovascular Medicine. The journal homepage highlights current and forthcoming issues, impact metrics, and manuscript submission through Editorial Manager.
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Subject
Cardiac & Cardiovascular Systems
Impact Factor
3.1
Quartile
Q2
Open Access Type
Open
ISSN
1738-5520
eISSN
1738-5555
Invitation Only
No
Cost Range
There is no author submission fee or other publication-related fee.
Submission Instructions
Korean Circulation Journal accepts the following article types. Click on an article type to view submission instructions.
Original Researches
Cover Letter
Cover letter is required and must include any request for expedited review with reasons and a statement that the study received proper ethical oversight. Cover letter must include special considerations, a brief research background or how the data were collected, supporting information for the submission, the date, corresponding author contact details, signature, and a statement that the study received proper ethical oversight.
Abstract
Original Researches must include a structured abstract. Abstract must not exceed 250 words. Abstract must be structured. Abstract must use the headings Background and Objectives, Methods, Results, and Conclusions.
Manuscript
Manuscript must not exceed 5000 words excluding the title page, abstract, and tables. Manuscript must be arranged as Title Page, Abstract, Keywords, Text, Acknowledgements, Funding, Disclosures, References, Figure Legends, Figures, Tables, and Supplemental Materials, and the text must use Introduction, Methods, Results, and Discussion headings. Manuscript must include an author’s summary of no more than 100 words, three to five MeSH keywords, a graphic abstract, funding and disclosure statements, and a conflict of interest statement if none exists.
References
References must not exceed 30. References must follow the NLM Style Guide for Authors, Editors, and Publishers. References must be numbered consecutively in order of mention, list all authors if there are 6 or fewer or the first 3 followed by “et al.” if there are more than 6, use Index Medicus journal abbreviations, include DOIs for online-ahead-of-print articles, and exclude personal communications, unpublished observations, and submitted manuscripts from the reference list.
Figures & Tables
Original Researches must include no more than 8 figures and tables in total. Manuscript sequence places figure legends, figures, and tables after the references. Every figure and table must be cited in numerical order in the text, and figures must have short titles with 2- to 3-sentence captions while tables must use Arabic numbering with a brief title.
Clinical Investigation And Reports
Cover Letter
Cover letter is required. Cover letter must include any special considerations, brief background on the research or data collection, supporting information for the submission, corresponding author contact details and signature, and ethical approval information.
Abstract
A structured abstract is required. Abstract must be 250 words or fewer. Abstract must be structured. Abstract must use the headings Background and Objectives, Methods, Results, and Conclusions.
Manuscript
Manuscript must be 5,000 words or fewer, excluding the title page, abstract, and tables. Manuscript must be arranged as Title Page, Abstract, Keywords, Text, Acknowledgements, Funding, Disclosures, References, Figure Legends, Figures, Tables, and Supplemental Materials, and the text must use Introduction, Methods, Results, and Discussion headings. Manuscript must include 3 to 5 MeSH keywords, a graphic abstract, a funding statement with grant numbers and funder role, and a conflict of interest statement including a statement that none exists if there are no conflicts.
References
References must not exceed 30. References must follow NLM Style Guide formatting with numbered citations in order of mention. References must be cited in the text in numerical order, use Index Medicus journal abbreviations, list all authors if there are 6 or fewer or the first 3 followed by et al. if there are more than 6, and must not be cited in the abstract.
Figures & Tables
The total number of figures and tables must not exceed 8. Manuscript sequence places Figure Legends, Figures, and Tables after References. Every figure and table must be cited in the text in numerical order.
Basic Science Reports
Cover Letter
A cover letter is required. Cover letter must include any special considerations, a brief research background or data-collection context, supporting information for the submission, the date, corresponding author contact details and signature, and ethical approval information.
Abstract
A structured abstract is required. Abstract must be 250 words or fewer. Abstract must be structured. Abstract must use the headings Background and Objectives, Methods, Results, and Conclusions.
Manuscript
Manuscript must be 5,000 words or fewer, excluding the title page, abstract, and tables. Manuscript must be arranged as Title Page, Abstract, Keywords, Text, Acknowledgements, Funding, Disclosures, References, Figure Legends, Figures, Tables, and Supplemental Materials, with the text using Introduction, Methods, Results, and Discussion headings. Manuscript must include 3 to 5 MeSH keywords, a graphic abstract, a title page with total word count, conflict of interest and funding statements, and a disclosure stating no conflict of interest when none exists.
References
References must not exceed 30. References must follow NLM Style Guide formatting. References must be numbered consecutively in order of mention in the text, journal names abbreviated in Index Medicus style, all authors listed if 6 or fewer or the first 3 followed by et al. if more than 6, and unpublished material cited only in the text.
Figures & Tables
The total number of figures and tables must not exceed 8. Manuscript order places figure legends, figures, and tables after the references, indicating they should be included with the manuscript rather than embedded within the main text sections. Every figure and table must be cited in the text in numerical order, all figures must have a number, title, and caption, and abbreviations in each table and figure must be defined.
State Of The Art Reviews
Cover Letter
Cover letter is required. Cover letter must include special considerations, a brief background on the research or data collection, supporting information on originality or relevance, conflict of interest, permissions or ethical issues, the date, the corresponding author’s name, affiliation, phone number, fax number, email address, and a signature.
Abstract
An unstructured abstract is required. Abstract must not exceed 250 words. Abstract must be unstructured.
Manuscript
Manuscript must not exceed 10,000 words excluding tables. Manuscript must include an author’s summary of no more than 100 words describing unmet needs, important findings for those needs, and the scientific and clinical meanings of the article, include three to five MeSH keywords, and provide a representative image selected from one figure.
References
There is no reference limit. References must follow NLM style. References must be numbered consecutively in the order cited, use Index Medicus journal abbreviations, list all authors when there are 6 or fewer, and list the first 3 authors followed by 'et al.' when there are more than 6.
Figures & Tables
A representative image must be selected from one figure representing the findings of the article.
Clinical Practice Guideline
Cover Letter
Cover letter is required. Cover letter must state any special considerations, provide brief background on the research or data collection, include supporting information such as originality or relevance, and give the date, corresponding author’s name, affiliation, phone, fax, email, and signature.
Abstract
Abstract requirements are not specified.
Manuscript
Title must indicate that the article is a secondary publication when submitted as a secondary publication. Manuscript must include explicit competing interest and funding statements, including the roles of funders or a statement that the funder had no involvement when applicable.
References
References must follow NLM style. References must be numbered consecutively in order of citation, use Index Medicus journal abbreviations, list all authors if there are 6 or fewer or the first 3 followed by et al. if there are more than 6, and include a DOI for articles published online ahead of print.
Figures & Tables
Figures must be numbered and accompanied by a title and caption, and tables must be numbered in Arabic numerals with a brief title and not duplicate data in the text or figures.
Letters To The Editor
Cover Letter
Cover letter must be included with the submission. Cover letter must include any special considerations, a brief background on the research or data collection, supporting information for the submission, the date, the corresponding author’s name, affiliation, phone number, fax number, email address, and signature.
Abstract
Abstract requirements are not specified.
Manuscript
Letter must not exceed 500 words including references. Letter must focus on a specific article published in KCJ within 6 months of the issue date.
References
Letter may include no more than 5 references. References must be numbered consecutively in the order cited, use Index Medicus journal abbreviations, follow NLM style, list all authors when there are 6 or fewer and the first 3 followed by et al. when there are more than 6, exclude personal communications unpublished observations and submitted manuscripts from the reference list, and include a DOI for articles published online ahead of print.
Figures & Tables
Letter may include no more than 1 figure and table.
Research Letter
Cover Letter
Cover letter is required. Cover letter must include special considerations, a brief research background or data-collection description, supporting information for the submission, conflict of interest, permissions and relevant ethical issues, the date, the corresponding author’s name, affiliation, phone, fax, email, and signature.
Abstract
Abstract requirements are not specified.
Manuscript
Research Letter must not exceed 800 words.
References
Research Letter must include no more than 5 references. References must follow NLM Style Guide formatting. References must be numbered consecutively in the order cited, use Index Medicus journal abbreviations, list all authors if there are 6 or fewer or the first 3 followed by et al. if there are more than 6, and include a DOI for articles published online ahead of print.
Figures & Tables
Research Letter must include no more than 1 figure and table. Supplementary materials are not allowed for Research Letter.
Recent Publications
Long-Term Impact of New-Onset Diabetes Mellitus in Hypertensive Patients
Sungjoon Park, Suhyun Kim, Ho-Gyun Shin, Kyun-Ik Park, Seung-Pyo Lee, Hee-Sun Lee, Ju-Yeun Lee, Kwang-il Kim, Si-Hyuck Kang, Jang Hoon Lee, Ju-Hee Lee, Kye Hun Kim, Jae Yeong Cho, Jae-Hyeong Park, Sue K. Park, Mina Kim, Jin Young Lee, Kwangsoo Kim, Hae-Young Lee
10.4070/kcj.2026.0017
View Publication
When Lowering LDL Is Not Enough: Confronting Residual Inflammatory Risk After Myocardial Infarction
Onyou Kim, Soon Jun Hong
10.4070/kcj.2026.0353
View Publication
Systematic Review of Cardiovascular Risk Prediction Models for the Korean Population
Jaeyong Lee, Sojung Shin, Dasom Son, Hyeok-Hee Lee, Hyeon Chang Kim, Hokyou Lee
10.4070/kcj.2026.0084
View Publication
Long-term Impact of Residual Inflammatory Risk in Acute Myocardial Infarction Patients Treated With Percutaneous Coronary Intervention Who Achieved Optimal Lipid Control
Sangho Hyun, Kyung An Kim, Kwan Yong Lee, Sang Hyun Kim, Myunhee Lee, Sungmin Lim, Byung-Hee Hwang, Eun Ho Choo, Jin-Jin Kim, Ik Jun Choi, Chan Joon Kim, Mahn-Won Park, Kiyuk Chang
10.4070/kcj.2025.0469
View Publication
Insights Into Atrial Arrhythmias After Atrial Septal Defect Closure
Miyako Igarashi, Tomoko Ishizu
10.4070/kcj.2026.0264
View Publication
Frequently asked questions
How long does it take to publish?
Initial decision is typically made within 4 weeks after external review. Expedited review decisions are made within 3 working days, with an initial decision within 2 weeks. Revised manuscripts not resubmitted within 8 weeks without notification are considered withdrawn.
Reformat to Korean Circulation Journal using Livewrite PremiumIs a cover letter required?
A cover letter is expected. Requests for expedited review should be included in the cover letter, and ethical approval for studies must be noted in both the cover letter and the Methods section.
Reformat to Korean Circulation Journal using Livewrite PremiumWhat are the publication costs?
There is no author submission fee or other publication-related fee.
Reformat to Korean Circulation Journal using Livewrite PremiumResearch Topics
Coronary Interventions and Diagnostics
Cardiac Imaging and Diagnostics
Atrial Fibrillation Management and Outcomes
Cardiovascular Function and Risk Factors
Cardiac Valve Diseases and Treatments
Acute Myocardial Infarction Research
Cardiac Arrhythmias and Treatments
Cardiac electrophysiology and arrhythmias
Cardiac Structural Anomalies and Repair
Congenital Heart Disease Studies
Coronary Artery Anomalies
Cardiac pacing and defibrillation studies
Blood Pressure and Hypertension Studies
Heart Failure Treatment and Management
Antiplatelet Therapy and Cardiovascular Diseases
Aortic Disease and Treatment Approaches
Cardiovascular Health and Disease Prevention
Infective Endocarditis Diagnosis and Management
Peripheral Artery Disease Management
Kawasaki Disease and Coronary Complications
Cerebrovascular and Carotid Artery Diseases
Lipoproteins and Cardiovascular Health
Pulmonary Hypertension Research and Treatments
Cardiovascular Disease and Adiposity
Mechanical Circulatory Support Devices
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