Cardiovascular Diseases Research

Active

Assistance listing
93.837
Agency
Grant awards
43,325 $68,555,217,569 in federal obligations

Program facts

Assistance types
  • Project Grant
  • Cooperative Agreement
  • Block Grant
Treasury account
  • 75-0872-0-1-552
More information

Program details come from SAM.gov Assistance Listings. Updated . Grant award figures come from USAspending.gov.

About this program

The National Heart, Lung, and Blood Institute (NHLBI), a component of the National Institutes of Health, administered the Cardiovascular Diseases Research program (Assistance Listing 93.837) and made a final award on March 1, 2027, with robust recent grant activity and several open or forthcoming opportunities.

The program funds investigator-initiated research in heart and vascular disease across basic, translational, clinical, and population sciences. Recent awards exemplify this scope: training and fellowship grants supporting cardiomyocyte biology (mechanisms of cardiac regeneration via sonic hedgehog signaling; titin protein regulation in dilated cardiomyopathy); clinical mechanistic research in heart failure and arrhythmias (precision phenotyping of atrial fibrillation using machine learning; G protein signaling in cardiomyocytes); device and imaging innovation (deep learning for interventional cardiac MRI); and immunological drivers of cardiovascular disease (immune checkpoint molecules in atherosclerosis; CD8+ T cell roles in post-myocardial infarction remodeling). Research spans pediatric congenital disease, sepsis-related lung injury, and COPD-associated complications, reflecting NHLBI's broad cardiovascular and pulmonary focus.

The portfolio comprises predominantly Project Grants (95% of 41,258 awards), with smaller shares of Block Grants (3%) and Cooperative Agreements (2%). Across 43,325 total awards spanning 1965 to March 2027, federal dollars obligated reached $68.56 billion. The NHLBI National Heart Lung and Blood Institute dominated funding with 17,500 awards worth $52.17 billion federal dollars—76% of the program's entire federal obligation. The broader NIH awarded 24,946 grants ($14.48 billion), while other HHS and NIH components contributed smaller volumes. Recent awards typically range from $36,000 to $163,000, with fellowship training grants (F30, F31, F32) clustered around $40,000–$85,000 and larger career transition or clinical research grants reaching $75,000–$163,000. Non-federal cost-share added $3.53 billion across the portfolio, with no evidence of mandatory matching requirements.

Award volume has declined modestly over the past five years: 1,440 awards in 2023 to 1,263 in 2025, with 2026 showing 1,113 awards and only 106 recorded as of March 2027 (reflecting partial-year data). This trajectory suggests steady, continuous funding rather than feast-famine cycles.

Several grant opportunities remain open or recently posted for applicants. PAR-27-125 forecasts a multi-site clinical trial mechanism (UG3/UH3) for investigator-initiated trials relevant to NHLBI's mission, with up to seven years of total support. PAR-27-040 and PAR-27-039 offer Small Business Transition Grants for early-career entrepreneurs via STTR (R41/R42) and SBIR (R43/R44) mechanisms. RFA-HL-27-008 (posted September 2, 2025, due July 9, 2026) solicits applications for Clinical Trial Center and Clinical Centers under the HeartShare 2.0 program focused on heart failure with preserved ejection fraction; companion RFA-HL-27-009 seeks renewal of the Data Translation Center. RFA-DK-27-108 invites U01 cooperative agreement applications for the CARE-T1D consortium studying cardiovascular disease in type 1 diabetes, with due date March 10, 2027.

Eligible applicants include nonprofit and for-profit organizations, institutions of higher education, state and local governments, small businesses, and individuals (for certain training grants). SBIR and STTR applicants must meet SBA small business criteria and maintain primary employment at the small business firm. Domestic institutions are generally required, though foreign components in research are permitted when consistent with the parent award.

Objective and description

Objective

The National Heart, Lung, and Blood Institute (NHLBI) provides global leadership for a research, training, and education program to promote the prevention and treatment of heart, lung, and blood diseases and enhance the health of all individuals so t

Description

Fosters heart and vascular research in the basic, translational, clinical and population sciences, and to foster training to build talented young investigators in these areas, funded through competitive research training grants. Small Business Innovation Research (SBIR) program: To stimulate technological innovation; use small business to meet Federal research and development needs; foster and encourage participation in innovation and entrepreneurship by socially and economically disadvantaged persons; and increase private-sector commercialization of innovations derived from Federal research and development funding. Small Business Technology Transfer (STTR) program: To stimulate technological innovation; foster technology transfer through cooperative R & D between small businesses and research institutions, and increase private sector commercialization of innovations derived from federal R & D.

Eligibility

Applicant eligibility

Local (includes State-designated Indian Tribes; excludes institutions of higher education and hospitals), Public nonprofit institution/organization (includes institutions of higher education and hospitals), Individual/Family, Small business (less than 500 employees), Private nonprofit institution/organization (includes institutions of higher education and hospitals) . Any nonprofit organization engaged in biomedical research and institutions or companies organized for profit may apply for almost any kind of grant. Only domestic, non-profit, private or public institutions may apply for NRSA Institutional Research Training Grants. An individual may apply for an NRSA or, in some cases, for a research grant if adequate facilities to perform the research are available. SBIR grants can be awarded only to United States small business concerns (entities that are independently owned and operated for profit or owned by another small business that itself is independently owned and operated for profit, or owned by multiple venture capital operating companies, hedge funds, private equity firms, or any combination of these and have no more than 500 employees including affiliates). Primary employment (more than one-half time) of the principal investigator must be with the small business at the time of award and during the conduct of the proposed project. In both Phase I and Phase II, the research must be performed in the U.S. or its possessions except under rare and unique circumstances where foreign components are thoroughly justified and necessary to the overall completion of the project. To be eligible for funding, a grant application must be approved for scientific merit and program relevance by a scientific review group and a national advisory council. Normally, SBIR projects must be performed at least 67% by the applicant small business in Phase I and at least 50% of the Project in Phase II. STTR grants can be awarded only to United States small business concerns (entities that are independently owned and operated for profit and have no more than 500 employees) that formally collaborate with a university or other non-profit research institution in cooperative research and development. The principal investigator of an STTR award may be employed with either the small business concern or collaborating non-profit research institution as long as s/he has a formal appointment with or commitment to the applicant small business concern and is willing to devote at least 10% effort (1.2 calendar months) to the project. At least 40% of the project is to be performed by the small business concern and at least 30% by the non-profit research institution. In both Phase I and Phase II, the research must be performed in the U.S. and its possessions except under rare and unique circumstances where foreign components are thoroughly justified and necessary to the overall completion of the project.

Beneficiary eligibility

Any nonprofit or for-profit organization, company or institution engaged in biomedical research. Only domestic for-profit small business firms may apply for SBIR and STTR programs.

Uses of assistance

Grants may support stipends, research expenses, supplies, travel, childcare costs, and research training tuition as required to perform the research effort. Restrictions or limitations are imposed against the use of funds for entertainment, foreign travel, general-purpose equipment, alterations and renovations, and other items not regularly required for the performance of research. Individual predoctoral and postdoctoral national research service awards (NRSAs) are made directly to individuals through their universities for research training in heart and vascular diseases. NRSA awards may be made to eligible institutions to enable them to appoint individuals selected by the institution for research training. Certain service and payback provisions may apply to postdoctoral individuals upon termination of the award or termination of the appointment. SBIR Phase I awards (of approximately 6 to 24 months in duration) are to establish the scientific and technical merit of the proposed research effort, and feasibility of ideas that appear to have commercial potential. Direct to Phase II SBIR awards are for projects that have been developed beyond the feasibility phase using resources other than NIH Phase I awards that meet program needs and exhibit potential for commercial application. SBIR Phase IIB awards are for promising projects that require additional time and funding to advance to commercialization as well as ultimate approval or clearance by a Federal regulatory agency. The Phase IIB program promotes partnerships between previously funded SBIR or STTR Phase II awardees and third-party investors and/or strategic partners by encouraging matching contributions. STTR Phase I awards (normally of 6 to 24 months in duration) are to establish the scientific and technical merit of the proposed cooperative research effort between a small business and non-profit research institution, and feasibility of ideas that appear to have commercial potential. Phase II awards are for the continuation of research initiated in Phase I that meets particular program needs and exhibits potential for commercial application. Fast-Track is an option whereby Phase I and Phase II SBIR or STTR projects are submitted and reviewed concurrently with the aim of reducing or eliminating the funding gap between Phase I and Phase II. The SBIR/STTR Commercialization Readiness Pilot Program awards facilitate the transition of previously or currently funded SBIR and STTR Phase II and Phase IIB projects to the commercialization phase by providing additional support for technical assistance and later stage research and development activities not typically supported through Phase II or Phase IIB grants or contracts including replication of key studies, Investigational New Drug (IND)-enabling studies, clinical studies, manufacturing costs, regulatory assistance or a combination of services. While the intent of the SBIR/STTR programs is commercialization (Phase III), only SBIR/STTR technical and business assistance (TABA) funds are allowed to be used for commercialization activities such as intellectual property protections; market and sales; market research; business development/product development/market plans; legal fees, travel and other costs including labor relating to license agreements and partnerships. The remaining SBIR/STTR funds are for research and development purposes only and exclude these commercialization activities.

Use restrictions

Restrictions or limitations are imposed against the use of funds for entertainment, foreign travel, general-purpose equipment, alterations and renovations, and other items not regularly required for the performance of research.

Length and time phasing of assistance

The National Heart, Lung, and Blood Advisory Council may recommend funding for periods ranging from 1 to 7 years. Funding commitments are made annually. Funding commitments are made annually. SBIR: Normally, Phase I awards are for 6 to 24 months; normally, Phase II awards are for 1-3 years. STTR: Normally, Phase I awards are for 6 to 24 months; normally, Phase II awards are for 1-3 years. Award length may vary depending on the recommendation of the scientific review group, the national advisory council, successful annual performance, and availability of funds. A formal notification in the form of a Notice of Award (NoA) will be provided to the applicant organization.

How to apply

Criteria for selecting proposals

The major elements in evaluating proposals include assessments of: (1) the scientific merit and general significance of the proposed study and its objectives; (2) the technical adequacy of the experimental design and approach; (3) the competency of the proposed investigator or group to successfully pursue the project; (4) the adequacy of the available and proposed facilities and resources; (5) the necessity of the budget components requested in relation to the proposed project; and (6) the relevance and importance to announced program objectives. The following criteria will be used in considering the scientific and technical merit of SBIR/STTR Phase I grant applications: (1) the soundness and technical merit of the proposed approach; (2) the importance of the problem the proposed research will address; (3) the qualifications of the proposed principal investigator, supporting staff, and consultants; (4) the technological innovation of the proposed research; (5) the potential of the proposed research for commercial application; (6) the appropriateness of the budget requested; (7) the adequacy and suitability of the facilities and research environment; and (8) the adequacy of plans to include both genders and minorities and their subgroups as appropriate for the scientific goals of the research. Plans for the recruitment and retention of subjects will be evaluated; and (9) where applicable, the adequacy of assurances detailing the proposed means for (a) safeguarding human or animal subjects, and/or (b) protecting against or minimizing any adverse effect on the environment. Phase II grant applications will be reviewed based upon the following criteria: (1) The degree to which the Phase I objectives were met and feasibility demonstrated; (2) the scientific and technical merit of the proposed approach for achieving the Phase II objectives; (3) the qualifications of the proposed principal investigator, supporting staff, and consultants; (4) the technological innovation, originality, or societal importance of the proposed research; (5) the potential of the proposed research for commercial application; (6) the reasonableness of the budget requested for the work proposed; (7) the adequacy and suitability of the facilities and research environment; and (8) The adequacy of plans to include both genders and minorities and their subgroups as appropriate for the scientific goals of the research. Plans for the recruitment and retention of subjects will be evaluated; and (9) where applicable, the adequacy of assurances detailing the proposed means for (a) safeguarding human or animal subjects, and/or (b) protecting against or minimizing any adverse effect on the environment.

Award procedure

All accepted applications are evaluated by an appropriate initial review group (study section). All grant applications receive a final secondary review by the National Heart, Lung, and Blood Advisory Council. Staff inform applicants of the results of the review. If support is contemplated, staff initiate preparation of awards for grants. All accepted SBIR/STTR applications are evaluated for scientific and technical merit by an appropriate scientific peer review panel and by a national advisory council or board. All applications receiving a priority score compete for available SBIR/STTR set-aside funds on the basis of scientific and technical merit and commercial potential of the proposed research, program relevance, and program balance among the areas of research.

Time to approval or disapproval

Regular Grants: From 7 to 9 months. SBIR/STTR Grants: About 7-1/2 to 9 months.

Renewals

Renewal applications are reviewed in the same manner as new applications.

Appeals

A principal investigator (P.I.) may question the substantive or procedural aspects of the review of his/her application by communicating with the staff of the Institute. A description of the NIH Peer Review Appeal procedures is available in the NIH Guide at the following URL http://grants.nih.gov/grants/guide/notice-files/NOT-OD-11-064.html.

Grant opportunities

Opportunity Status Posted Applications due
Multi-Site Investigator-Initiated Clinical Trials (Collaborative UG3/UH3 Clinical Trial Required) PAR-27-125 Forecasted —
Small Business Transition Grant for New Entrepreneurs (Parent R41/R42 Clinical Trial Optional) PAR-27-040 Forecasted —
Small Business Transition Grant for New Entrepreneurs (Parent R43/R44 Clinical Trial Optional) PAR-27-039 Forecasted —
Development of Candidate Medical Countermeasures (MCMs) and Technologies Against Radiological/Nuclear or Chemical Threats (U01 Clinical Trial Not Allowed) RFA-AI-27-014 Open
NIH Research Program Projects (Parent P01 Clinical Trial Optional) PA-27-061 Open
Lasker Clinical Research Scholar's Program (Si2/R00 Clinical Trial Optional) PAR-27-076 Open
NIH Collaborative International Research Project (Parent PF5 Clinical Trial Optional) PA-26-002 Open
NIH Research Education Program - Research Experiences (Parent R25 - Clinical Trial Not Allowed) PA-27-036 Open
NIH Research Educational Program - Mentoring Activities & Networks (Parent R25/UE5 - Clinical Trial Not Allowed) PA-27-035 Open
Single Source Competition: Continuation of the Cardiovascular Repository for Type 1 Diabetes (CaRe-T1D) - Resource Center (U24 Clinical Trial Not Allowed) RFA-DK-27-109 Closed
Implementation Science to Advance HIV Prevention, Treatment, and Care (R61/R33 Clinical Trial Optional) RFA-AI-27-018 Open
Centers for AIDS Research (CFAR) and Developmental Centers for AIDS Research (D-CFAR) (P30 Clinical Trial Not Allowed) PAR-28-090 Open
INCLUDE Project: Exploratory/Developmental Research Awards for Down syndrome (R21 Clinical Trial Not Allowed) RFA-OD-27-003 Open
INCLUDE Project: Transformative Research Awards for Down syndrome (R01 Clinical Trial Not Allowed) RFA-OD-27-004 Open
INCLUDE Project: Clinical Trials Phased Awards for Down syndrome Research (R61/R33 Clinical Trial Required) RFA-OD-27-005 Open
Continuation of the Cardiovascular Repository for-Type 1 Diabetes (CARE-T1D) Consortium U01 (Open Competition)- Research (U01, Clinical Trial Not Allowed) RFA-DK-27-108 Open
HeartShare 2.0: Refining Heart Failure Subtypes and Treatment Targets for Personalized Clinical Trials - Clinical Trial Center and Clinical Centers (U01 Clinical Trial Optional) RFA-HL-27-008 Closed
Single Source: HeartShare 2.0: Refining Heart Failure Subtypes and Treatment Targets for Personalized Clinical Trials - Data Translation Center (U54 Clinical Trial Optional) RFA-HL-27-009 Closed
Administrative Supplements to Existing NIH Grants and Cooperative Agreements (Parent Admin Supp Clinical Trial Optional) PA-26-001 Open
Limited Competition: Small Grant Program for NHLBI K01/K08/K23/K25 Recipients (R03 Clinical Trial Optional) RFA-HL-27-004 Open
NHLBI TOPMed: Omics Phenotypes of Heart, Lung, and Blood Disorders (X01 - Clinical Trial Not Allowed) PAR-25-447 Open
Single Source: Cardiothoracic Surgical Trials Network (CTSN) Data Coordinating Center (U01 Clinical Trial Required) RFA-HL-27-002 Closed
Limited Competition: Stimulating Access to Research in Residency Transition Scholar (StARRTS) (K38 Clinical Trial Not Allowed) RFA-HL-27-010 Open
NIH, CDC and FDA Small Business Innovation Research Grant (Parent SBIR [R43/R44] Clinical Trial Optional) PA-27-100 Open
NIH Small Business Technology Transfer Grant (Parent STTR [R41/R42] Clinical Trial Optional) PA-27-102 Open
NIH Small Business Innovation Research (SBIR) Phase IIB Strategic Breakthrough Award (Parent [R44] Clinical Trial Optional) PA-27-101 Open
Research Enhancement Award Program (REAP) for Health Professional Schools and Graduate Schools (R15 Clinical Trial Required) PAR-27-078 Open
NIH Research Education Program - Courses, Curriculum & Methods (Parent R25 - Clinical Trial Not Allowed) PA-27-034 Open
SBIR/STTR Commercialization Readiness Pilot (CRP) Program (Parent SB1 Clinical Trial Optional) PAR-27-098 Open
Limited Competition: Regenerative Medicine Innovation Project (RMIP) Investigator-Initiated Studies (U01 Clinical Trial Not Allowed) RFA-AR-25-013 Closed
Limited Competition: Regenerative Medicine Innovation Project (RMIP) Investigator-Initiated Clinical Trials (UH3 Clinical Trial Optional) RFA-AR-25-014 Closed
HEAL Initiative: Non-addictive Analgesic Therapeutics Development [Small Molecules and Biologics] to Treat Pain (UG3/UH3 Clinical Trial Optional) RFA-NS-27-007 Open
Stimulating Access to Research in Residency (StARR) (R38 Independent Clinical Trial Not Allowed) RFA-HL-26-012 Open
Implementation and Evaluation of Databases to Examine AIDS RFA-AI-28-025 Forecasted —
Data Coordinating Center for Multi-Site Investigator-Initiated Clinical Trials (Collaborative U24 Clinical Trial Required) PAR-27-013 Open
Stephen I. Katz Early Stage Investigator Research Project Grant (R01 Clinical Trial Not Allowed) PAR-25-322 Open
Clinical Coordinating Center for Multi-Site Investigator-Initiated Clinical Trials (Collaborative UG3/UH3 Clinical Trial Required) PAR-27-012 Open
Single-Site Investigator-Initiated Clinical Trials (R61/R33 Clinical Trial Required) PAR-27-011 Open
Ruth L. Kirschstein National Research Service Award (NRSA) Individual Fellowship for Students at Institutions Without NIH-Funded Institutional Predoctoral Dual-Degree Training Programs (Parent F30) PA-25-425 Open
Ruth L. Kirschstein National Research Service Award (NRSA) Individual Predoctoral Fellowship (Parent F31) PA-25-422 Open
Ruth L. Kirschstein National Research Service Award (NRSA) Individual Postdoctoral Fellowship (Parent F32) PA-25-423 Open
Ruth L. Kirschstein National Research Service Award (NRSA) Individual Senior Fellowship (Parent F33) PA-25-424 Open
Ruth L. Kirschstein National Research Service Award (NRSA) Individual Fellowship for Students at Institutions with NIH-Funded Institutional Predoctoral Dual-Degree Training Programs (Parent F30) PA-25-426 Open
Rare Diseases Clinical Research Consortia (RDCRC) for the Rare Diseases Clinical Research Network (RDCRN) (U54 Clinical Trial Optional) PAR-25-438 Closed
Short Courses on Innovative Methodologies and Approaches in the Behavioral and Social Sciences (R25 Clinical Trials Not Allowed) RFA-OD-25-003 Open
Intervention Research to Improve Native American Health (R01 Clinical Trial Optional) PAR-25-379 Open
T32 Training Program to Promote Broad Participation (T32 Clinical Trial Not Allowed) PAR-25-356 Closed
Limited Competition: Data Analysis and Sharing Center (DASC) for the MACS/WIHS Combined Cohort Study (MWCCS) (U01 Clinical Trials Not Allowed) RFA-HL-26-010 Closed
Limited Competition: Clinical Research Sites (CRS) for the MACS/WIHS Combined Cohort Study (MWCCS) (U01 Clinical Trial Not Allowed) RFA-HL-26-009 Closed
Leadership and Coordination Center (LACC) for the MACS/WIHS Combined Cohort Study (MWCCS) (U01 Clinical Trials Not Allowed) RFA-HL-26-011 Closed
Show 40 more

Latest 50 listed here. See the rest on GovTribe.

Grant awards

Award Recipient Federal obligations Awarded
Therapeutic targeting of the 5'-untranslated region in titin cardiomyopathy F32HL188945 Vanderbilt University Medical Center $87,148
Evaluating trends and implementation determinants of post-pandemic sedation practices in the intensive care unit F32HL188860 The Trustees Of The University Of Pennsylvania $92,154
Precision phenogrouping and treatment of atrial fibrillation in real-world settings F31HL189078 Emory University $53,114
Role of the duffy antigen receptor for chemokines in vascular dysfunction and hypertension in the context of HIV F31HL186719 Augusta University Research Institute, Inc. $44,267
Dissecting the spatiotemporal encoding of gas signaling in cardiomyocytes F31HL188983 Trustees Of Boston University $50,114
AI feedback strategy for reproducible cardiovascular micro-organ development F30HL189252 Icahn School Of Medicine At Mount Sinai $55,114
Focal adhesion kinase (FAK) as a central regulator of cardiac resident macrophage development and injury response… F30HL188770 The Washington University $37,312
Unraveling the role of v-domain immunoglobulin suppressor of t cell activation (vista) in atherosclerosis. F30HL188450 Mayo Clinic $50,314
Electrochemical biosensors for continuous monitoring of inflammation in heart failure with preserved ejection fraction F30HL180059 Northwestern University $46,242
Elucidating nanoparticle shape requirements to maximize lymphatic and lymph node targeted drug delivery - lymphatic… F31HL178361 University Of Maryland, College Park $41,366

Latest 10 of 43,325 listed here. See the rest on GovTribe.

Top recipients by federal obligations

10 of 1,754 recipients listed here. See the rest on GovTribe.

Federal obligations by fiscal year

Fiscal year Federal obligations
FY2026 $3,125,446,324
FY2025 $5,267,753,471
FY2024 $6,279,061,038
FY2023 $7,354,904,724
FY2022 $6,316,861,375
FY2021 $5,651,582,926
FY2020 $1,645,132,693
FY2019 $1,677,074,431
FY2018 $1,588,517,039
FY2017 $1,525,757,585
FY2016 $1,622,492,354
FY2015 $1,493,227,030
FY2014 $1,501,643,296
FY2013 $1,501,979,043
FY2012 $1,548,677,756
FY2011 $1,535,592,980
FY2010 $1,582,727,832
FY2009 $1,473,848,729
FY2008 $766,038,262
FY2007 $908,174,732
FY2006 $1,326,492,895
FY2005 $1,350,222,664
FY2004 $1,366,859,872
FY2003 $1,262,121,318
FY2002 $1,235,328,717
FY2001 $534,332,525
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Quick answers

What is Assistance Listing 93.837?

Assistance Listing 93.837 is Cardiovascular Diseases Research, a federal grant program run by National Institutes of Health (Department of Health and Human Services).

What is the CFDA number for Cardiovascular Diseases Research?

Its CFDA number is 93.837: Assistance Listing numbers were called CFDA numbers before 2018.

How much funding has Assistance Listing 93.837 awarded?

43,325 grant awards under 93.837 have obligated $68,555,217,569 in federal funds to 1,754 recipients.

Who receives the most funding from 93.837?

The recipients obligated the most under Cardiovascular Diseases Research are Brigham & Womens Hospital Inc. ($1,662,251,568), The Trustees Of The University Of Pennsylvania ($1,500,111,829) and Regents Of The University Of Michigan ($1,349,838,683).

How much did 93.837 obligate in fiscal year 2025?

Grants under 93.837 obligated $5,267,753,471 in federal funds in fiscal year 2025.

Are there open grant opportunities under 93.837?

39 of the latest 50 opportunities under 93.837 are open or forecasted. The latest, Multi-Site Investigator-Initiated Clinical Trials (Collaborative UG3/UH3 Clinical Trial Required), was posted on July 1, 2026.

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