Reviewer Rebuttal (pnasnexus-rebuttal)

When to trigger

• A decision letter arrives (reject / major or minor revision / accept-with-revisions).
• You have reviewer comments and need a strategy before writing.
• A revision is drafted and you need the point-by-point response letter.
• The reviews include transferred PNAS reviews plus new PNAS Nexus reviews.

Step 0: read the editor's letter first

The handling editor's framing outranks individual reviewers. At PNAS Nexus the paper was assigned to an Editorial Board member and then a handling/guest editor; that editor's letter tells you what is load-bearing. Identify:

• The decision type and whether a new review round is implied.
• Which concerns the editor emphasizes (these are load-bearing — address fully).
• Any deal-breaker the editor names (e.g., "the central claim needs independent validation").

A "reject but would consider a new submission" is an invitation gated on the deal-breaker. Don't treat it as a flat reject, but don't under-deliver either.

Special case: reviews carried over from a PNAS transfer

If the paper was transferred from flagship PNAS, prior PNAS reviews travel with it. When responding:

• Treat the carried-over PNAS comments as part of the record — the PNAS Nexus editor can see them. Address them too, not just the new PNAS Nexus reviews.
• If a PNAS reviewer's concern was about fit/priority (why the transfer happened), you usually don't need to re-litigate it for PNAS Nexus — but if it was about rigor, it still applies and must be answered with evidence.
• Don't assume the transfer "used up" the criticism; the PNAS Nexus editors assess independently.

Triage every comment into 4 buckets

Most rejections-on-revision come from silently skipping a load-bearing comment or defending when an experiment was actually needed.

Prioritize the experiments

• Rank requested experiments by (impact on the central claim) × (feasibility).
• The reviewer's #1 concern about the main claim must be answered with data, not prose.
• If an experiment is infeasible, offer the strongest alternative evidence and say why it suffices.

Response-letter format

For each comment:

Reviewer N, Comment k: <verbatim quote of the reviewer>

Response: <what we did / our reasoning>. <Evidence: new Fig./table, statistics.>
Changes: "<quoted new manuscript text>" (p. X, lines Y–Z; new SI Fig. Sk).

• Open with a short thank-you and a 3–4 line summary of the major changes across the whole revision.
• Quote each comment verbatim; never paraphrase a reviewer in a way that softens their point.
• Quote the new manuscript text so the editor can verify without hunting.
• Use a consistent visual convention (reviewer text plain, your response indented, manuscript quotes in italics/color).

Tone rules

• Respectful and non-defensive, even when the reviewer misread the paper — if they misread it, the writing was unclear; fix the writing and explain.
• Concede real limitations explicitly; an honest limitation paragraph builds credibility.
• No sarcasm, no "as we clearly stated" — assume good faith.

Claim-integrity / over-claiming watch

If a reviewer says the conclusion outruns the data, this is the most dangerous comment. Either add the evidence or narrow the claim in the title, Significance Statement, abstract, and last paragraph — and say you did. Because the Significance Statement is public-facing and broad, re-check it specifically for over-claiming when you narrow (link pnasnexus-significance), and re-confirm it stays within 50–120 words; re-run pnasnexus-fit if the narrowed claim weakens broad significance.

PNAS Nexus revision ledger

Build a separate ledger for the parts of a PNAS Nexus revision the editor can audit quickly:

When reviewers ask for extra validation, prefer a response package that shows where the evidence landed: "new main Fig. 3C", "new SI Fig. S7", "new Methods paragraph", or "new Data and Code Availability sentence." Do not bury PNAS-Nexus-specific changes only in the response letter.

Output format

【Decision type】 reject / reject-resubmit / major / minor
【Editor's load-bearing concerns】 [...]
【Transferred PNAS reviews?】 N/A | yes → which carried-over concerns still apply (rigor) vs not (fit)
【Deal-breaker】 ... → plan to resolve
【Comment triage】 Do [...] / Do-partial [...] / Defend [...] / Defer [...]
【Experiment priority】 ranked by impact × feasibility
【Claim integrity】 narrowing needed? (re-check Significance Statement 50–120w + pnasnexus-fit)
【Revision ledger】 Significance Statement / SI / data-code availability / page-budget changes
【Response letter】 drafted point-by-point with quoted changes

Anti-patterns

• Do not silently skip a comment the editor emphasized.
• Do not ignore carried-over PNAS reviews on a transferred paper — they are part of the record.
• Do not defend by assertion where the reviewer asked for data.
• Do not over-promise future work to dodge a needed experiment.
• Do not forget to update (and re-count) the Significance Statement and abstract if you narrow the claim.
• Do not draft the response before the manuscript is actually revised.