Individual fellowship (F-series)

How this application is scored, and how to structure it

Predoctoral to Postdoctoral Transition Award (Parent F99/K00 - Clinical Trial Not Allowed)

National Institutes of Health

Deadline: April 8, 2029(940 days)

NIH Fellowship Review Criteria (revised 2025)

Applies to fellowship applications with receipt dates on or after 25 January 2025. Three scored criteria replaced the previous five, specifically to reduce the influence of the sponsor's and institution's reputation on the score.

Overall Impact score 1–9, weighing the three criteria together.

What reviewers score

Candidate's Preparedness and Potential

scored 1–9
Reviewers are asked
Does the candidate's prior training prepare them for THIS plan, judged in the context of their career stage? Do the statements and referee letters give convincing evidence of scientific understanding, creativity, and resourcefulness?
So write
A narrative of trajectory, not a CV in prose: what each stage taught you, and why that makes this specific project the right next step. Address gaps directly — reviewers judge relative to stage, so a career changer explaining the change reads better than one hiding it.
Commonly loses points for
  • Publication list restated with no argument about what it demonstrates
  • Referee letters that are generic — pick referees who can speak to specific qualities
  • No explanation of a productivity gap or a field switch

Research Training Plan

scored 1–9
Reviewers are asked
Is the project rigorous and feasible, and will completing it develop the candidate as a research scientist? Are the training goals clear, and will the plan actually achieve them?
So write
Two arguments braided together: the science must be sound AND it must teach you something you don't yet know. Name the specific skills to be acquired and tie each to an activity — coursework, a technique, a collaboration.
Commonly loses points for
  • A strong research plan with no training content — this is a fellowship, not a small R01
  • Training goals you have demonstrably already met
  • Scope too large for the fellowship term
  • No mention of rigour: controls, replicates, statistics

Commitment to Candidate

scored 1–9
Reviewers are asked
Is the sponsor's commitment and support genuine and concrete?
So write
Get the sponsor statement to be specific: meeting cadence, funding to cover the work, prior trainees and where they went, and an explicit plan for your transition to independence.
Commonly loses points for
  • Sponsor statement that praises the candidate but promises nothing measurable
  • No evidence the sponsor has funds to support the proposed experiments
  • No prior-trainee track record and no acknowledgement of that

Section-by-section outline

  1. 1.Specific Aims

    1 page

    The scientific argument, framed as training as well as research.

    Must include

    • Problem, gap, hypothesis
    • 2 aims is usually right for a fellowship — 3 reads as overambitious
    • One sentence per aim on the skill it develops

    Avoid

    • R01-scale ambition
    • No training dimension anywhere on the page
  2. 2.Candidate Background & Goals

    ~2–3 pages

    Feeds Candidate's Preparedness and Potential.

    Must include

    • Trajectory narrative with a stated long-term goal
    • Why this sponsor and this environment specifically
    • Honest account of what you still need to learn

    Avoid

    • Prose CV
    • Long-term goal so vague it fits anyone
  3. 3.Research Training Plan

    ~6 pages

    Feeds the Research Training Plan criterion — the scientific core.

    Must include

    • Per aim: design, controls, statistics, expected outcomes, alternatives
    • Preliminary data if you have it (not required, but persuasive)
    • Explicit training activities mapped to skills

    Avoid

    • Science and training written as two disconnected documents
  4. 4.Sponsor & Institutional Statements

    Per FOA

    Feeds Commitment to Candidate.

    Must include

    • Specific mentoring cadence and funding commitment
    • Prior trainee outcomes
    • Institutional resources you will actually use

    Avoid

    • Letting the sponsor write something generic — draft it for them

Strategy notes for this mechanism

  • The 2025 revision deliberately de-emphasised sponsor and institutional prestige — your own preparedness and the training plan carry more weight than they used to.
  • Referee letters are read as evidence for Criterion 1. Brief your referees on which specific qualities to speak to.
  • Check the stipend and eligibility window for your target institute — F32 eligibility depends on years of postdoctoral experience.

Eligibility for this opportunity: Refer to Section III. Eligibility Information in the NOFO for additional information on eligibility.Foreign Organizations/International CollaborationsNon-domestic (non-U.S.) Entities (Foreign Organizations) are not eligible to apply.Non-domestic (non-U.S.) components of U.S. Organizations are not eligible to apply.Foreign components, as defined in the NIH Grants Policy Statement, are allowed.

Structure and review criteria are compiled from published funder guidance and were verified in July 2026. NIH revises these, so confirm against the current announcement before you submit. This is drafting scaffolding, not a substitute for your programme officer or research development office.