PNAS Review Time
PNAS (Proceedings of the National Academy of Sciences)'s review timeline, where delays usually happen, and what the timing means if you are preparing to submit.
Research Scientist, Neuroscience & Cell Biology
Author context
Works across neuroscience and cell biology, with direct expertise in preparing manuscripts for PNAS, Nature Neuroscience, Neuron, eLife, and Nature Communications.
What to do next
Already submitted to PNAS (Proceedings of the National Academy of Sciences)? Use this page to interpret the status and choose the next step.
The useful next step is understanding what the status usually means at PNAS (Proceedings of the National Academy of Sciences), how long the wait normally runs, and when a follow-up is actually reasonable.
PNAS has two submission tracks that produce very different review timelines. The Direct Submission track goes through a standard editorial process. The Contributed track (for NAS members) has a prearranged review where the member selects reviewers. Understanding which track applies to you is the first step in predicting your timeline.
Quick answer
PNAS Direct Submission: 2-4 weeks for desk decisions, 6-12 weeks to first post-review decision. PNAS Contributed: faster at every stage because the NAS member manages reviewer selection. Most researchers use the Direct track. Total time from submission to acceptance runs 3-6 months for Direct, 2-4 months for Contributed.
PNAS review timeline at a glance
Stage | Direct Submission | Contributed |
|---|---|---|
Initial screening | 1-3 days | 1-2 days |
Editorial triage | 2-4 weeks | 1-2 weeks (member pre-screens) |
Reviewer recruitment | 2-4 weeks | Pre-arranged by NAS member |
Peer review | 4-6 weeks | 3-5 weeks |
First decision | 6-12 weeks from submission | 4-8 weeks |
Revision window | 4-8 weeks | 4-8 weeks |
Post-revision | 2-4 weeks | 2-3 weeks |
How the Direct Submission track works
The Direct track is the standard path for most researchers. Your paper is assigned to an NAS member editor based on field expertise. That editor decides whether to send it for review.
PNAS desk-rejects approximately 40-50% of Direct Submissions. The editorial criteria are broader than Nature or Science but still require:
- Broad significance across scientific disciplines (not just one subfield)
- Methodological rigor appropriate to the claim
- Results that advance understanding rather than incrementally extending known work
- A clear connection between the data and the conclusions
The editor recruits 2-3 reviewers independently. This is where the Direct track slows down compared to Contributed: finding willing reviewers can take 2-4 weeks, especially for interdisciplinary work where the right expertise is hard to match.
How the Contributed track works
NAS members can "contribute" papers to PNAS. The member selects the reviewers (subject to editor approval), which eliminates the reviewer recruitment delay. The member also serves as the communicating author, vouching for the paper's quality and significance.
This track is faster but has been criticized for potential conflicts of interest. PNAS has tightened the rules over the years: members can now contribute only one paper per year, and the editor must approve the reviewer selection.
If you are not an NAS member and don't have one as a collaborator, this track is not available to you.
What happens during PNAS review
PNAS reviewers evaluate:
- Scientific significance: Does this result matter broadly, or only to specialists?
- Methodological rigor: Are the methods appropriate and well-executed?
- Data quality: Do the figures and statistics support the conclusions?
- Clarity: Is the paper well-written and organized?
PNAS reviews tend to be constructive rather than adversarial. The journal's culture emphasizes improving papers, not gatekeeping them. Revision requests are common but usually reasonable.
Common timeline patterns
Fast desk rejection (2-3 weeks): The editor didn't see enough broad significance. Common for specialized work that would be strong in a field journal.
Slow editor assignment (3-4 weeks before desk decision): PNAS editors are working scientists. Field-specific editors may be traveling, on sabbatical, or managing many manuscripts. This isn't a signal about your paper.
Review taking 8+ weeks: Reviewer recruitment is the usual bottleneck. Interdisciplinary papers are hardest to match. The editor may need to invite 5-6 people to get 2-3 acceptances.
Significance Statement revision requested: PNAS requires a Significance Statement written for a broad audience. Editors often request revisions to this even when the science is fine. Budget an extra round for this.
When to follow up
Situation | What to do |
|---|---|
No desk decision after 4 weeks | At the upper range. Inquiry is reasonable. |
Under review for 8+ weeks | Normal. Reviewer recruitment can be slow. |
Under review for 12+ weeks | Follow up. A reviewer may have dropped out. |
Revision submitted, no response for 4+ weeks | Follow up. |
Should you submit to PNAS?
Submit if:
- the results have broad scientific significance beyond one discipline
- you can write a compelling Significance Statement for a non-specialist audience
- the work is rigorous enough to withstand review from outside your exact subfield
- the Direct Submission path fits your timeline (or you have an NAS member collaborator)
Think twice if:
- the significance is primarily within one narrow field (a specialty journal may rank higher in your field)
- Nature or Science is a more natural fit for the level of the finding
- the Significance Statement would require the reader to be a specialist to understand
- you need a faster decision than 6-12 weeks
A free manuscript scan can help assess whether the broad significance framing works before you submit to PNAS.
FAQ
How long does PNAS take to desk-reject?
Typically 2-4 weeks for Direct Submissions. Contributed papers rarely get desk-rejected.
What's the difference between Direct and Contributed tracks?
Direct goes through standard editorial review. Contributed allows an NAS member to select reviewers, which is faster but limited to one paper per member per year.
How long does PNAS peer review take?
4-6 weeks for reviewer reports after reviewers are recruited. Total 6-12 weeks from submission to first decision.
What is the PNAS Significance Statement?
A 120-word statement written for a broad scientific audience explaining why the result matters. Editors scrutinize this carefully and often request revisions.
Sources
- Clarivate Journal Citation Reports (released June 2025)
- PNAS information for authors
Reference library
Use the core publishing datasets alongside this guide
This article answers one part of the publishing decision. The reference library covers the recurring questions that usually come next: how selective journals are, how long review takes, and what the submission requirements look like across journals.
Dataset / reference guide
Peer Review Timelines by Journal
Reference-grade journal timeline data that authors, labs, and writing centers can cite when discussing realistic review timing.
Dataset / benchmark
Biomedical Journal Acceptance Rates
A field-organized acceptance-rate guide that works as a neutral benchmark when authors are deciding how selective to target.
Reference table
Journal Submission Specs
A high-utility submission table covering word limits, figure caps, reference limits, and formatting expectations.
Best next step
Use this page to interpret the status and choose the next sensible move.
For PNAS (Proceedings of the National Academy of Sciences), the better next step is guidance on timing, follow-up, and what to do while the manuscript is still in the system. Save the Free Readiness Scan for the next paper you have not submitted yet.
Guidance first. Use the scan for the next manuscript.
Anthropic Privacy Partner. Zero-retention manuscript processing.
Where to go next
Start here
Same journal, next question
Supporting reads
Conversion step
Use this page to interpret the status and choose the next sensible move.
Guidance first. Use the scan for the next manuscript.