PNAS 'Under Review': What Each Status Means and When to Expect a Decision
What PNAS publishes about its editorial workflow, what Under Review cannot tell you, and how to ask for clarification without treating a status label as a prediction.
While you wait
Waiting on PNAS (Proceedings of the National Academy of Sciences)? Get your next move ready.
The PNAS (Proceedings of the National Academy of Sciences) wait is out of your hands; the next move isn't. Scan your next manuscript free, or run this paper through the scan to see what reviewers typically push back on, so the revision response is ready when the decision lands.
PNAS review timeline: what the data shows
Time to first decision is the most actionable number. What happens after varies by manuscript and reviewer availability.
What shapes the timeline
- Use the publisher's current timing summary; do not assume a fixed desk-decision deadline.
- Editorial assignment, reviewer availability, topic, and revisions can all affect elapsed time.
- Revision and additional experiments can extend the timeline; the decision letter supplies the actual revision deadline.
What to do while waiting
- Track the record in the submission portal; a status label alone does not prove external review has begun.
- Follow the journal's status-inquiry guidance and any deadline in its correspondence.
- Prepare revision materials in parallel if you expect a revise-and-resubmit decision.
Last reviewed: 2026-10-10.
Quick answer: If your PNAS submission shows "Under Review," the label and elapsed time alone do not identify the internal stage, a delay's cause, or the likely decision. PNAS has a 2025 Journal Impact Factor of 9.5 in the 2026 JCR release, and reports a 13% acceptance rate for Direct Submissions in 2025 (14% on its policies page), and reports that more than 50 percent of submissions are declined at initial evaluation (per PNAS Editorial Policies).
Authors on SciRev report about 1.6 months for the first review round (130 reports, checked 2026-09-25). These are self-selected community reports, not promises or clocks that start when a portal status changes. Publisher decision-timing values and interval definitions were not independently verified for this October 10, 2026 update; see the source limitation below.
Rejections at initial evaluation come fastest: SciRev authors report an average of 17 days for an immediate rejection (130 reports, read October 2026). Papers passed to a member editor and outside reviewers take longer, and the PNAS review time guide sets out each stage.
If you would rather use this waiting period productively than just refresh the status page, Manusights checks manuscripts through a free scan and a $39 Full Review that scores journal fit and flags citation problems before you decide on a next step. It cannot speed up the NAS Editorial Board's process or tell you which internal stage your manuscript has reached; the PNAS editorial office can confirm progress if the portal is unclear.
For a second opinion before reviewers see your manuscript, run a PNAS submission readiness check.
Submission portal and editorial contact: PNAS uses the PNAS Central submission system at PNAS submission portal. Editorial questions should reference the manuscript ID; pnas@nas.edu handles publisher-level inquiries. The PNAS author center covers submission and policy guidance, and the PNAS reviewer guidelines page describes what PNAS asks reviewers to do.
For broader status-tracking guidance across general-science publishers, the Cell Press author status portal gives useful baseline patterns.
How PNAS handles a submission
PNAS operates an NAS Editorial Board model. The PNAS handling editor structure works as follows: on submission, your paper is assigned to an Editorial Board member (the senior editor in one of the 31 NAS disciplines) who functions as the initial handling editor.
If the Board member determines that the paper should proceed further, the individual assigns it to a member editor (an NAS member who serves as the active handling editor overseeing the peer review process) or, if the NAS membership lacks sufficient expertise, to a nonmember guest editor.
A PNAS member editor is an NAS member who is an active scientist in the field most relevant to your research and manages the peer review process for papers in that field; guest editors are active scientists who are not NAS members but are recognized by the Board as experts in their field.
PNAS editorial culture is decisive: more than 50 percent of submissions are declined at initial evaluation. Papers that pass the Editorial Board member stage have cleared the scope-fit filter that distinguishes PNAS from broader-scope general-science journals.
PNAS's review pipeline
PNAS's public policies describe the editorial workflow, not every portal label. Use the interpretations below as orientation, not confirmation of your manuscript's internal stage; no stage-specific duration is established here.
Status | Possible interpretation | What the label does not establish |
|---|---|---|
Submitted | Submission received or being processed | Whether all checks are complete |
With Editorial Board Member | Board member evaluation | When screening will finish |
Member Editor Assigned | Member or guest editor involvement | Whether reviewer invitations have been accepted |
Under Review | Ongoing manuscript evaluation | Which review tasks are complete or the likely outcome |
Required Reviews Complete | Requested reports may be available for assessment | That the final decision is already made |
Decision Pending | A decision may be being prepared | A guaranteed decision date or result |
Decision Sent | Decision communication issued | Read the letter for the actual decision and instructions |
The Editorial Board member desk screen (more than 50 percent declined)
Before the paper reaches external reviewers, the assigned NAS Editorial Board member evaluates whether the scope-fit warrants PNAS's editorial slots. More than 50 percent of submissions are declined at initial evaluation. An abstract that does not explain its significance to a multidisciplinary audience presents a scope-fit risk, but this does not establish a five-to-seven-day rejection clock. Read the decision letter for the reason; a short turnaround alone does not identify why a paper was declined.
What happens during initial submission checks?
The PNAS editorial office confirms the submission is complete. PNAS says it will consider manuscripts for review as long as the required components are included: a manuscript file (any format for an initial submission) with title page, abstract, significance statement, main text, references, and figures or tables with legends, SI files, contact and competing-interest information for all authors, data sharing plans, funding information, and a list of suggested Editorial Board members, NAS members, and qualified reviewers (minimum of three each). For animal studies, PNAS asks authors to report details in accordance with the ARRIVE guidelines.
What happens during Editorial Board evaluation?
The assigned NAS Editorial Board member reads the paper and evaluates broad-significance, scope-fit (does the abstract read to a multidisciplinary audience), and disciplinary routing across the 31 NAS disciplines. The editorial culture expects the abstract to communicate to a non-specialist.
What happens when a member or guest editor is assigned?
Papers that pass the Editorial Board member screen are assigned to a member editor (an NAS member who serves as the active handling editor and oversees peer review) or, if the NAS membership lacks sufficient expertise, to a nonmember guest editor. The handling editor identifies and invites external reviewers with topic-matched expertise.
Can disciplinary routing explain a wait?
PNAS assigns an Editorial Board member and may use a guest editor when NAS membership lacks the needed expertise. The public policy does not let an author infer from elapsed time that a particular paper is awaiting cross-discipline consultation.
When are PNAS reviewers recruited?
PNAS says a member or guest editor will typically secure two independent peer reviews, and that research papers across all submission routes are peer-reviewed by at least two independent experts. PNAS does not publish how long reviewer recruitment takes.
What happens during active peer review?
Once reviewers agree to review, they return reports within the time frame PNAS requests. Research papers across all submission routes are peer-reviewed by at least two independent experts. PNAS's reviewer guidelines ask reviewers to confirm that the research is well designed and executed, that the presentation of methods will permit replication, that the data are unambiguous and properly analyzed, and that conclusions are supported by the data.
What happens after reviewer reports return?
After reports return, the member editor synthesizes them.
If the result is a major revision, our guide to answering a PNAS major revision explains the two-month window for sending the revised paper back.
When to worry
- A quick rejection: Read the decision letter; speed alone does not distinguish an administrative issue from an editorial judgment.
- No status change: Check the portal for requests or messages before interpreting the wait.
- Several weeks Under Review: Not proof that screening is complete, all reviewers are recruited, or acceptance is more likely.
- A prolonged wait: If an editor-provided date has passed or you need clarification, send one concise inquiry via PNAS Central. Do not assume a reviewer dropped out.
- Status changes to "Decision Pending": Wait for the decision letter; the label does not guarantee a result or a one-to-two-week deadline.
"My paper has been Under Review for 6 weeks. Is that bad?"
Six weeks in one portal status does not by itself predict rejection or acceptance. An aggregate journal decision statistic is not automatically a duration measured from a portal status change; compare only intervals whose starting and ending events are explicitly defined.
Reviewer recruitment, outstanding reports, and editorial assessment are possible explanations for a wait, but the portal label does not rank those explanations or show which applies to your paper. A nine-week wait is not evidence of a reviewer extension or additional consultation.
Only the editorial office can clarify your manuscript's progress.
Follow any contact instructions in your manuscript record. If a promised date has passed, an urgent issue arises, or the wait needs clarification, one concise inquiry with the manuscript ID is reasonable. PNAS's public policy does not impose a six-to-nine-week ban on status inquiries; repeated messages do not resolve the uncertainty.
What to do while waiting
- Check the manuscript record and follow PNAS's contact instructions; use a concise status inquiry when clarification is needed rather than repeated messages.
- Do not submit the paper anywhere else while it is Under Review at PNAS. PNAS has explicit prohibitions on dual submission.
- Prepare a point-by-point response template for likely reviewer concerns: broad-significance, scope-fit for multidisciplinary audience, scientific rigor, reproducibility.
- If you have related work submitted elsewhere or recently published, prepare disclosure language for when revisions are requested.
- Read recent PNAS papers in your subfield to calibrate the current editorial bar.
Readiness check
While you wait on PNAS (Proceedings of the National Academy of Sciences), scan your next manuscript.
The scan takes about 2 to 3 minutes. Use the result to decide whether to revise before the decision comes back.
If PNAS rejects: sister-journal cascade with reasoning
If your PNAS paper is rejected after review, the natural cascade depends on what the reviewers and member editor cited:
PNAS Nexus is the natural PNAS open-access cascade for broad-significance work where the open-access publishing model fits. PNAS Nexus is published by Oxford Academic for the National Academy of Sciences; the OUP submission portal at Oxford Academic author guidance handles submission.
Nature is the external cascade for top-tier broad-significance life-sciences work. Springer Nature operates independently from PNAS; reports do not transfer. The Nature Manuscript Tracking System at mts-nature.nature.com handles submission; nature@nature.com handles publisher-level inquiries.
Science is the external cascade for top-tier broad-significance general-science work. AAAS operates independently from PNAS; the AAAS Centralized Tracking System at cts.sciencemag.org handles submission.
eLife is a cascade option for life-sciences work where the Reviewed Preprint model fits.
Communications journals (Communications Biology, Communications Medicine) are Nature Portfolio open-access cascades.
How PNAS compares to nearby alternatives
Feature | PNAS | Nature | Science | PNAS Nexus |
|---|---|---|---|---|
Desk-rejection rate | More than 50 percent at initial evaluation | No comparable current figure established here | No comparable current figure established here | No comparable current figure established here |
First-decision benchmark | Not independently verified in this update; check current publisher metrics | Consult the linked Nature guide and current publisher metrics | Consult the linked Science guide and current publisher metrics | Check current OUP metrics |
First post-review decision | No numerical clock asserted here; verify the publisher's interval definition | Do not compare unmatched timing intervals | Do not compare unmatched timing intervals | Do not compare unmatched timing intervals |
Reviewer count | ≥2 independent experts | Confirm current article-type policy | Confirm current article-type policy | Confirm current article-type policy |
Editorial route | NAS Editorial Board + member or guest editor | Separate Nature Portfolio editorial process | Separate AAAS editorial process | OUP journal for the NAS |
Editorial bar | Broad-significance + scope-fit for multidisciplinary audience | Top-tier broad-significance | Top-tier broad-significance | NAS open-access broad-significance |
Submit If
- Your abstract states the broad NAS-audience implication in the first 150 words, not only the subfield result.
- Your methods section gives enough protocol, sample-size, and analysis detail for two independent reviewers to reproduce the central claim.
- Your figures make the multidisciplinary contribution legible without requiring the reader to already know the niche literature.
PNAS submission readiness check can help you examine broad-significance framing and methods completeness.
Think Twice If
- The abstract needs more than 200 words before a non-specialist can tell why the result matters beyond the immediate subfield.
- The Methods or supplementary information omit sample-size logic, primary statistical tests, code availability, or reagent/protocol details needed for independent reproduction.
- The central figure set proves a narrow mechanism but does not show why the finding changes a broader biological, physical, social, or engineering principle.
For a pre-upload diagnostic of broad-significance framing and scope-fit, run a PNAS pre-submission diagnostic before reviewer reports surface those concerns.
Last verified: PNAS editorial guidance at Pnas author instructions and PNAS reviewer guidelines documentation.
What checklist should you run while waiting?
- [ ] Abstract explains the broad NAS-audience implication before the subfield mechanism.
- [ ] Methods and supplementary files include sample-size logic, primary statistical tests, protocol detail, and data or code access.
- ] [Cover letter explains disciplinary routing and why the selected NAS discipline owns the contribution.
- [ ] Response outline anticipates broad-significance, reproducibility, and cross-discipline reviewer questions.
The PNAS reviewer experience
PNAS asks reviewers to evaluate four things specifically. The table below maps each to actionable preparation.
Reviewer focus area | What PNAS asks reviewers to evaluate | How to prepare for it |
|---|---|---|
Design and execution | Is the research well designed and executed? | Include detailed methods documentation. ARRIVE compliance for animal work, IRB documentation for human-subjects research, and pre-registration documentation where applicable. |
Replication | Will the presentation of methods permit replication? | Use detailed methods documentation. PNAS requires data-availability statements. Deposit raw data, original images, and code in public repositories. |
Data and analysis | Are the data unambiguous and properly analyzed? | Describe the statistical analysis, give exact sample sizes, and make the underlying data available. |
Conclusions | Are the conclusions supported by the data? | Keep claims inside what the figures show, and write the abstract to communicate to a multidisciplinary NAS audience; reviewers also weigh relevance to PNAS's scope and purpose. |
Editorial checklist for a PNAS-targeted manuscript
The following three checks are Manusights editorial interpretation of PNAS's stated scope and reviewer criteria. They are not findings from a published review corpus, measured causes of rejection, or evidence about your paper's current status.
Use the checklist to ask whether the abstract translates the contribution for a broad readership, the methods explain key design choices, and the figures support why a multidisciplinary reader should care. These are preparation questions, not a way to predict the Board's decision.
Check whether the abstract explains significance beyond the subfield. If the first paragraph names a pathway, material platform, organism, or data method, also state the broader principle the result addresses. This is a framing check, not evidence that such a paper will receive a desk rejection within a particular number of days.
The stronger version keeps the technical terms, but makes the first sentence answer why a reader outside the specialty should keep reading. For PNAS, the abstract has to function as a routing document as much as a summary.
Check whether your PNAS abstract reads beyond the subfield →
Check whether methods documentation permits replication. For specialized techniques, custom analysis pipelines, animal protocols, or single-cell sequencing workflows, explain the relevant protocol, reagents, code, raw-data access, sample-size rationale, and statistical tests. PNAS's reviewer guidance asks whether the methods permit replication; this checklist does not establish how often a gap causes major revision.
Check if your PNAS methods package is review-ready →
Check whether the selected discipline fits the central contribution. Explain the primary discipline in the cover letter when the work spans fields. The public policy does not establish whether any particular manuscript is delayed by consultations between Board members.
The strongest manuscripts pre-empt this by selecting a primary discipline that clearly fits the central contribution and by using the cover letter to explain why that discipline, rather than an adjacent NAS discipline, should own the review. This matters most for papers that combine computational methods, mechanistic biology, materials, climate, or social-science evidence.
Check your PNAS discipline routing before the editor sees it →
This guide separates PNAS's public criteria from Manusights editorial preparation advice. A manuscript review can flag potential framing or documentation gaps, but cannot determine whether PNAS will accept the paper or explain a portal delay. 60-day money-back guarantee. Your manuscript is not used for model training, and access is limited to the review workflow.
Methodology note
This page draws on PNAS's public editorial guidance at Pnas author instructions, PNAS reviewer guidelines documentation (NAS Editorial Board model across 31 disciplines, member editor + guest editor assignment, more than 50 percent declined at initial evaluation), and SciRev community-reported transit data. The manuscript checklist is Manusights editorial interpretation, not a measured review-corpus result.
Source limitation: PNAS public materials explain the NAS Editorial Board workflow, but do not expose reviewer-invitation timing, member-editor notes, or why a particular paper sits in the portal. Status interpretations are not publisher-confirmed definitions of every interface label. Aggregate metrics and self-selected author reports cannot diagnose a particular manuscript or justify fixed inquiry deadlines.
The official PNAS article and journal metrics page returned a cookie-only response when checked October 10, 2026. Its decision-timing values and interval definitions could not be independently verified, so this update does not quote numerical publisher decision clocks or assume when they start.
What to read next
For the general-science landscape beyond PNAS, see PNAS Nexus (NAS open-access cascade via OUP), external general-science alternatives (Nature, Science), eLife (Reviewed Preprint model), and Communications journals (Nature Portfolio open-access). The choice across these titles depends on whether the central contribution is broad-significance multidisciplinary (PNAS), NAS open-access broad-significance (PNAS Nexus), top-tier broad-significance (Nature, Science), Reviewed Preprint life-sciences (eLife), or Nature Portfolio open-access (Communications journals).
PNAS says a member or guest editor will typically secure two independent peer reviews. Editors screen and triage manuscripts before any reviewer sees them. A response template covering broad significance and methods documentation can help organize a later revision; no measured reduction in revision time is established here.
For a pre-upload check of your manuscript against the PNAS multidisciplinary-broad-significance bar before submission, our PNAS pre-submission diagnostic flags the scope-fit and methods-documentation weaknesses most likely to surface in reviewer reports.
Frequently asked questions
It indicates an ongoing evaluation, but the label alone does not establish the internal stage or how many reviewers have agreed. PNAS describes an Editorial Board member screen, followed where appropriate by member or guest editor oversight and independent expert review. Ask the editorial office if you need the stage confirmed.
The status label does not establish a decision date. Publisher decision-timing values and interval definitions were not independently verified for this October 10, 2026 update. SciRev's author-reported first-round data are a separate, self-selected source, not a deadline for your paper.
Follow any instructions or date given by PNAS. If that date has passed, an urgent issue arises, or you need clarification about a prolonged wait, send one concise inquiry through PNAS Central with your manuscript ID. The public policy does not establish a mandatory six-week waiting rule.
Six weeks alone does not reveal the decision or the cause of a delay. An aggregate journal benchmark is not automatically time in one portal status; compare only explicitly defined intervals. Only the editorial office can confirm progress.
The wording suggests reviewer assignment, but it does not by itself confirm that all invited reviewers accepted or that reports are complete. PNAS's public policy describes at least two independent expert reviews and single-anonymous review for Direct Submissions; it does not define every portal label.
A paper can take longer than a published benchmark without that predicting acceptance or rejection. Compare the same interval: time since submission is not time since Under Review appeared. For your manuscript's progress, use PNAS Central or a concise editorial-office inquiry.
Elapsed time is not a diagnostic of reviewer dropout or likely outcome. Check for requests in the portal and follow up if an editor-provided date has passed or clarification is needed. PNAS does not publish ten- or fourteen-week thresholds that identify the cause of a delay.
Sources
- PNAS Editorial Policies
- PNAS Article and Journal Metrics, access attempted October 10, 2026; decision-timing values and interval definitions not independently verified.
- PNAS Reviewer Guidelines
- PNAS Member Contributed Submissions
- PNAS Author Center
- SciRev community-reported data on PNAS
Free guide
Waiting is not the same as being ignored, and there is a way to tell.
Reviewers usually get ten days. When it has been months, an appeal and a complaint are different instruments with different addresses, and only one of them fits a delay. This is which to use, and the wording that gets an answer.
Final step
Done interpreting the status? Put the wait to work.
The PNAS (Proceedings of the National Academy of Sciences) decision will arrive on the journal's clock. What you control is what's next: scan your next manuscript free, or run this paper through the scan so the likely reviewer pushback is mapped before the revision request lands.
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Target journal PNAS
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Re-read the status guidePut the guidance to work
Turn a decision into a clear next step.
Use the practical response workflow when a manuscript needs revision, or the process guide when you need to understand what the editorial status means.
Where to go next
Start here
Same journal, next question
- PNAS Review Time: What to Expect From Submission to Decision
- PNAS Submission Process: What Happens and What Editors Judge First
- Is PNAS a Good Journal? What the Data and Editorial Model Tell You
- How to Avoid Desk Rejection at PNAS
- PNAS Impact Factor 2026: 9.5, Q1, Rank 14/140
- PNAS Submission Guide: What to Prepare Before You Submit