Pre-Submission Review for Cardiovascular Research: What Circulation and JACC Reviewers Expect

Circulation requires a Clinical Perspective section with two questions answered in bulleted format:

"What Is New?" (maximum 100 words, 2 to 3 bullets) - What the paper adds to existing knowledge.

"What Are the Clinical Implications?" (maximum 100 words, 2 to 3 bullets) - How the findings affect clinical practice.

JACC requires a Central Illustration and a similar clinical significance framing. European Heart Journal has its own Translational Outlook requirement.

These sections are not afterthoughts. Editors read them before deciding on triage. A weak Clinical Perspective signals that the clinical consequence is unclear, which is exactly what triggers desk rejection.

In our pre-submission review work, cardiovascular manuscripts usually fail in one of three places. The endpoint hierarchy is less disciplined than the abstract suggests. The statistics section is technically correct but not robust enough for an independent statistical reviewer. Or the Clinical Perspective and framing language imply a practice consequence that the event counts, follow-up, or comparator do not yet justify.

Our review of current cardiovascular journal instructions points the same way. Editors are not only asking whether the result is interesting. They are asking whether the paper is already packaged in a way that a statistician, clinician, and editor can all trust on the first pass.

Cardiovascular trials have some of the most rigorous reporting requirements in medicine:

• CONSORT 2025 compliance (with the new statistical analysis plan transparency requirements)
• DSMB oversight documentation
• pre-specified stopping rules
• adjudicated clinical endpoints (not self-reported)
• appropriate comparators (not just placebo vs active when standard of care exists)

• CONSORT 2025 checklist complete with page references
• primary endpoint matches registration (ClinicalTrials.gov)
• DSMB charter and stopping rules described
• endpoints adjudicated by blinded committee
• appropriate comparator selected and justified
• patient-reported outcomes included
• long-term follow-up data or plan described
• cost-effectiveness or health economic data if applicable

• STROBE checklist complete
• confounding addressed systematically (propensity score, instrumental variables, or other approach)
• sensitivity analyses for unmeasured confounding
• temporal relationships established where causal claims are made
• large enough sample for the effect size claimed

• relevance to human cardiovascular disease explicitly stated
• multiple experimental models used
• in vivo validation of in vitro findings
• translational pathway described (mechanism to therapeutic target)
• appropriate heart failure models, arrhythmia models, or atherosclerosis models used

• Clinical Perspective box completed (Circulation format: 2 to 3 bullets for each question, 100 words each maximum)
• Central Illustration prepared (JACC)
• clinical implication stated concretely, not speculatively
• the finding represents a genuine change in clinical thinking or practice

The manuscript readiness check evaluates methodology, citation integrity, and journal fit in about 1-2 minutes. For cardiovascular manuscripts, citation verification is particularly important because the field publishes landmark trials frequently and missing a recent trial that changed practice signals an incomplete literature review.

The manuscript readiness check provides figure-level feedback, which matters for cardiovascular papers that rely on Kaplan-Meier curves, forest plots, and waterfall plots to communicate results. Figure-text inconsistencies in these critical displays undermine credibility.

For manuscripts targeting Circulation, JACC, or European Heart Journal, Manusights Expert Review ($1,000 to $1,800) connects you with cardiovascular reviewers who have published in and reviewed for these journals.

Cardiovascular research spans basic physiology, translational science, clinical trials, and device engineering. Each journal in the field has a distinct editorial lens: EHJ wants European relevance, Circulation wants AHA-aligned clinical impact, JACC wants ACC-relevant practice evidence, and Circulation Research wants mechanistic cardiovascular science.

Submitting a strong cardiovascular paper to the wrong journal costs 2-4 months. The most common mismatch: sending mechanistic cardiovascular science to a clinical journal (EHJ, Circulation) when it belongs at Circulation Research, or sending a clinical trial to a basic science journal when it belongs at JACC or EHJ.

A manuscript readiness check identifies which cardiovascular journal fits your manuscript's editorial lens in 1-2 minutes. The manuscript readiness check verifies citations and scores readiness.

That distinction matters because cardiovascular journals often look similar from the outside while screening for very different things on the inside. A clean mechanistic story with limited clinical consequence may be strong science and still look misplaced at a practice-facing journal. A clinically important dataset with thin mechanistic work can have the opposite problem. Pre-submission review helps catch that mismatch before the wrong editorial team makes the decision for you.