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NIH Exploratory/Developmental Grants Phase II (R33)

NHLBI Early Phase Clinical Trials for Therapeutics and/or Diagnostics for HLBS Disorders (R33 CT Required)

Funds an investigator's own phase I trial in heart, lung, blood or sleep disease β€” with every regulatory approval already in hand at award.

OpenNational Institutes of HealthUnited States

Most trial awards include time to get ready. This one does not, and says so in terms that decide whether an application is worth writing.

The trials are investigator-initiated phase I studies of diagnostic and therapeutic interventions for heart, lung, blood and sleep disorders, in adults and children. Single-site or multisite are both fine.

Applicants should be ready to initiate the trial withi…

Investigator-initiated phase I clinical trials of diagnostic and therapeutic interventions for heart, lung, blood and sleep disorders in adults and children, single-site or multisite, with regulatory approvals, drug and placebo supplies and third-party agreements established by the time of award and the trial starting within the first quarter. A clinical trial is required.

CycleiHow often this grant runs β€” e.g. annually, on a rolling basis, or a one-off call.Multiple per year
Next deadlineiThe next date applications are due. Rolling means you can apply any time.7 Jan 2027
Decision timeiTypical time from the deadline to the funder's decision.26 weeks
Project durationiHow long the funded work is expected to run.β€”
Award typeiThe form of funding β€” grant, equity, loan, tax credit, etc.Grant
Match fundingiThe share of project costs you must cover yourself. 0% = fully funded.β€”
Funding pooliThe total budget available across all awards in this round.β€”

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Last verified: 25 Aug 2026Funder reference: PAR-25-025Source: www.grants.gov