Preprints in Cardiovascular Science: Finding the Right Balance Between Speed, Openness, and Scientific Integrity

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Scientific publishing is undergoing a profound transformation, driven by increasing demands for rapid dissemination, transparency, and accessibility of research. Among the most influential developments is the widespread adoption of preprints—complete scientific manuscripts that are made publicly available online before undergoing formal peer review. By enabling immediate access to research findings, preprints accelerate scientific communication, invite constructive community feedback, and facilitate collaboration while reducing delays inherent to traditional publishing. One of the principal advantages of preprints is that they establish a publicly accessible, time-stamped record of scientific work, allowing authors to demonstrate the originality and precedence of their findings before journal publication [1]. Most preprint servers assign a Digital Object Identifier (DOI), providing a permanent and citable record that safeguards intellectual ownership and helps establish priority of discovery. This timestamp can reduce the risk of "scooping" while ensuring that early scientific contributions receive appropriate recognition. Importantly, once posted, preprints generally remain permanently accessible and cannot be withdrawn except under exceptional circumstances, thereby becoming part of the enduring scientific record [2]. Unlike articles published in peer-reviewed journals, preprints are disseminated before formal scientific evaluation. Nevertheless, reputable preprint servers conduct preliminary screening for plagiarism, ethical compliance, inappropriate content, and basic submission quality before making manuscripts publicly available. Furthermore, preprint platforms encourage post-publication scholarly discussion by allowing readers to provide comments and enabling authors to revise and update subsequent versions of their work [3]. Following this process, a preprint may ultimately be accepted for publication in a peer-reviewed journal, remain unpublished, or be rejected during editorial or peer-review assessment [4]. The COVID-19 pandemic dramatically accelerated the adoption of preprints, highlighting both their tremendous value and their inherent limitations. Rapid sharing of emerging evidence contributed substantially to global scientific collaboration and informed public health responses. At the same time, the widespread circulation of findings that had not undergone peer review underscored the potential risks of premature interpretation, media misrepresentation, and inappropriate clinical application. These experiences emphasized the need for clear editorial policies that balance the speed of scientific communication with scientific rigor, transparency, and public responsibility. Recognizing this evolving landscape, the Pakistan Heart Journal (PHJ) supports the responsible use of preprints in cardiovascular and clinical research. PHJ welcomes submissions that have previously been deposited on recognized preprint servers, reflecting its commitment to promoting openness while maintaining the highest standards of scientific integrity. During manuscript submission, authors must clearly disclose any prior preprint posting, including the name of the preprint server and the corresponding DOI. All manuscripts previously posted as preprints undergo PHJ's standard double-blind peer-review process, and editorial decisions are based solely on scientific merit rather than prior public availability. Authors remain fully responsible for ensuring compliance with ethical and reporting standards, including protection of patient confidentiality, data privacy, institutional ethical approvals, conflict-of-interest disclosures, funding transparency, authorship accountability, and appropriate disclosure of artificial intelligence (AI)-assisted writing or analytical tools where applicable. The Pakistan Heart Journal aligns its preprint policy with the recommendations of the International Committee of Medical Journal Editors (ICMJE). In accordance with these recommendations, preprints should be clearly identified as non-peer-reviewed manuscripts, include disclosures regarding funding sources and potential conflicts of interest, provide opportunities for public commentary, preserve metadata for withdrawn versions when applicable, and facilitate linkage between the preprint and the final peer-reviewed publication once available. PHJ permits the citation of preprints within submitted manuscripts provided they are explicitly identified as preprints in the reference list and are cited appropriately. However, authors should exercise caution when interpreting or citing findings that have not undergone peer review and should avoid drawing definitive clinical, therapeutic, or policy-changing conclusions based solely on non-peer-reviewed evidence. Following publication, authors are encouraged to update the corresponding preprint record by linking it to the final published version. Posting the journal-edited, accepted, or final published version of an article on a preprint server is not permitted unless specifically allowed by the journal's copyright policy. Acceptance of manuscripts previously available as preprints remains contingent upon fulfillment of PHJ's established editorial standards. Manuscripts must demonstrate originality, methodological rigor, ethical compliance, scientific validity, and relevance to cardiovascular medicine. As with all submissions, manuscripts may be rejected if concerns arise regarding plagiarism, duplicate publication, authorship integrity, research misconduct, or failure to meet the journal's scientific standards. By formalizing its preprint policy, the Pakistan Heart Journal seeks to embrace the advantages of rapid scientific communication while preserving the credibility and reliability of the published cardiovascular literature. This balanced approach reflects the journal's commitment to transparency, responsible innovation, and scientific excellence, ensuring that advances in scholarly publishing strengthen—rather than compromise—the integrity of cardiovascular research. Contribution: KH, AH, and AA contributed equally to the conception and preparation of this editorial and accept full responsibility for its content. Funding: This editorial received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors. Competing Interests/Conflict of Interest: The authors declare no competing interests. Ethical/IRB Approval: Not applicable. References [1] Alfonso F, Crea F. Preprints: a game changer in scientific publications? Eur Heart J. 2023 Jan 14;44(3):171–173. https://doi.org/10.1093/eurheartj/ehac665 [2] Flanagin A. Public access and open access in scientific publication. In: Christiansen SL, Iverson C, Flanagin A, et al., editors. AMA Manual of Style: A Guide for Authors and Editors. 11th ed. Oxford: Oxford University Press; 2020 [cited 2020 Sep 27]. Available from: https://www.amamanualofstyle.com/ [3] Penfold NC, Polka JK. Technical and social issues influencing the adoption of preprints in the life sciences. PLoS Genet. 2020 Apr 20;16(4):e1008565. https://doi.org/10.1371/journal.pgen.1008565 [4] Flanagin A, Fontanarosa PB, Bauchner H. Preprints involving medical research—do the benefits outweigh the challenges? JAMA. 2020;324(18):1840–1843. https://doi.org/10.1001/jama.2020.20674

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