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      HHS is a U.S. executive department that touches the lives of nearly all Americans by protecting your rights, research, food safety, health care, aging, and much more.

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Reducing animal research and testing

As a top priority for the Trump Administration, HHS is working to reduce the use of animals in research and testing when effective nonanimal approaches are available. HHS is advancing human-based research technologies and expanding tools that can better predict how medicines and other products may affect people. These efforts aim to improve research and product safety and efficacy testing while reducing animal use.

NIH Director Statement

Advancing NIH’s Mission Through a Unified Strategy

NIH Director’s new unified strategy commits to reducing our reliance on animal testing and advancing alternative testing models.

Read the statement

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Innovation

Advancing human-based research methods and new technologies that can reduce or replace animal testing.
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Investment

Directing federal funding toward human-based research, tools, and technologies that reduce reliance on animal testing.
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Validation

Testing and evaluating new methods to ensure they are reliable, effective, and safe alternatives to animal studies.

HHS milestones

  • Investing in Infrastructure for Human-Based Research

    September 21, 2026
    NIH

    Announced an investment of more than $88 million in funding for biomedical infrastructure projects to support human-based science nationwide.

  • Building a Human-Based Research Lab

    September 21, 2026
    NIH

    Announced plans to build a state-of-the-art laboratory at the NIH Clinical Center that will integrate standardized human organoid models, robotics, artificial intelligence, and advanced data capabilities to enable experiments on reproducible human biological systems.

  • Recruiting Human-Based Science Experts

    September 21, 2026
    NIH

    Launched an initiative to recruit grant reviewers with expertise in human-based science.

  • Tracking Animal Use in NIH Research

    September 21, 2026
    NIH

    Issued a new request for information from the scientific community to assess the feasibility of an annual public report tracking the number of vertebrate animals used in NIH-funded research.

  • Updating Nonclinical Testing Terms

    September 21, 2026
    FDA

    Issued a direct final rule replacing certain references to “animal tests” and “animal studies” with broader “nonclinical” terminology, facilitating and encouraging movement away from animal models where possible.

  • Sharing Practical Examples of NAMs

    September 21, 2026
    FDA

    Published a New Approach Methodologies (NAMs) Database of Use Case Examples described in publicly available FDA application review materials.

  • Advancing Human-Based Research Models

    September 21, 2026
    FDA

    Selected American Type Culture Collection (ATCC) to advance NAMs, including microphysiological systems (MPS) and organoid-based platforms, for infectious disease and cancer research.

  • Advancing Quantum Tools for NAMs

    September 17, 2026
    NIH

    A new challenge offering more than $7 million in awards to demonstrate how quantum-enabled approaches can improve detection and measurement in lab-based New Approach Methodologies (NAMs).

  • Advancing Women’s Health Modeling

    September 14, 2026
    NIH

    Awarded $21M for a program supporting human-based computational modeling of hormone homeostasis with specific application to women’s health.

  • Reviewing In Vitro NAMs at FDA

    September 9, 2026
    FDA

    Published an analysis of how in vitro New Approach Methodologies (NAMs) have been used in drug development studies submitted to FDA.

  • Advancing Biologics Safety Testing

    September 1, 2026
    FDA

    Held a Center for Biologics Evaluation and Research (CBER) workshop on Next-Generation Sequencing (NGS) for detecting unwanted biological agents in biologic products.

  • Improving Research and Safety Tools

    August 11, 2026
    NIH

    Launched new versions of tools to provide access to validated alternative methods and to provide chemical safety data and property predictions.

  • Integrating NAMs into Safety Testing

    July 28, 2026
    FDA

    FDA–HESI–Safety Pharmacology Society hybrid workshop on NAMs integration into safety pharmacology.

  • Investing in Human-Based Cancer Research

    July 28, 2026
    NIH

    Directed $15M for a technology development center to predict cancer patient responses using human-based science.

  • Coordinating NAMs Across FDA

    July 1, 2026
    FDA

    Established FDA’s NAMs Steering Committee to guide and coordinate New Approach Methodologies across the agency.

  • Modernizing Drug Tool Qualification

    July 1, 2026
    FDA

    Completed the move of all Drug Development Tool (DDT) Qualification Program activities to FDA’s OneNexus Platform.

  • Establishing NAMs Qualification Task Force

    July 1, 2026
    FDA

    Established a new International Liaison Group on Methods for Risk Assessment of Chemicals in Food (ILMERAC) NAMs Qualification Task Force, co-chaired by FDA and the German Federal Institute for Risk Assessment (BfR).

  • Evaluating an Anticaries Test Model

    July 1, 2026
    FDA

    Requested data on a pH cycling test model for evaluating over-the-counter anticaries drug products.

  • Created New NIH Office

    June 15, 2026
    NIH

    Launched ORIVA—a new office dedicated to speeding the development and use of human-based research technologies across NIH.

  • Advancing QSP-Based Dose Selection

    June 1, 2026
    FDA

    Issued draft guidance on using quantitative systems pharmacology (QSP) to support dose selection for Minimum Anticipated Biological Effect Level (MABEL) in First-in-Human (FIH) trials.

  • Streamlining Oncology Safety Studies

    May 1, 2026
    FDA

    Issued draft guidance to streamline nonclinical safety studies for certain oncology biologics and conjugated products.

  • Reporting Progress on Animal Testing

    April 20, 2026
    FDA

    Published a progress report on reducing animal testing in nonclinical studies and outlined FDA’s next steps.

  • Reducing Animal Testing in Preclinical Safety Studies

    April 10, 2026
    FDA

    Published a roadmap that outlines a strategic, stepwise approach for FDA to reduce and replace animal testing in preclinical safety studies of drugs and biologics with scientifically validated new approach methodologies (NAMs).

  • Coordinating NAMs Across CDER

    April 1, 2026
    FDA

    Established New Approach Methodologies Coordinating Committee (NAMs CC) to support coordination across the Center for Drug Evaluation and Research (CDER).

  • Piloting Integrated NAMs Review

    April 1, 2026
    FDA

    Launched a six-month pilot of Center for Drug Evaluation and Research’s (CDER) New Approach Methodologies Integrated Review Team (NAMs-IRT) to support the review of NAMs.

  • Investing in New Approach Methodologies

    March 18, 2026
    NIH

    Announced $150 million investment to facilitate NAM development in the areas of greatest scientific and regulatory need.

  • Guiding NAMs in Drug Development

    March 18, 2026
    FDA

    Issued draft guidance on general considerations for using New Approach Methodologies (NAMs) in drug development.

  • Updating Pyrogen and Endotoxins Testing Guidance

    March 18, 2026
    FDA

    Updated guidance on pyrogen and endotoxin testing, including approaches that can reduce reliance on animal testing.

  • Advancing Computational Toxicology

    March 1, 2026
    FDA

    Established an FDA-NIH-ARPA-H collaboration to develop toxicology databases and computational approaches through CATALYST.

  • Reducing Reliance on Animal Testing

    February 26, 2026
    FDA

    Held a public meeting on advancing drug development while reducing reliance on animal testing through FDA’s Reagan-Udall Foundation.

  • Reestablishing the NAMs Workgroup

    January 1, 2026
    FDA

    Reestablished FDA’s agency-wide NAMs Program Workgroup to coordinate and advance New Approach Methodologies across FDA.

  • Streamlining Antibody Safety Studies

    December 2, 2025
    FDA

    Issued draft guidance on streamlined nonclinical safety studies for certain monoclonal antibodies.

  • Reviewing NAMs in Drug Development

    December 1, 2025
    FDA

    Published a Center for Drug Evaluation and Research (CDER) review of New Approach Methodologies (NAMs) submitted as part of drug development programs.

  • Qualifying an AI-Based Drug Tool

    December 1, 2025
    FDA

    Qualified the AI-Based Histologic Measurement of NASH (AIM-NASH) as FDA’s first AI-based drug development and evaluation tool.

  • Reviewing CDER’s Experience with NAMs

    November 1, 2025
    FDA

    Published a systematic review of Center for Drug Evaluation and Research’s (CDER) Office of New Drugs (OND) using New Approach Methodologies (NAMs) in drug development.

  • Advancing Liver-on-a-Chip Research

    November 1, 2025
    FDA

    Published research on challenges and solutions for measuring commonly used biomarkers for drug-induced liver injury in a liver-on-a-chip platform.

  • Encouraging Experimental Animal Retirement

    October 1, 2025
    NIH

    Changed NIH policy to allow grant funding to be used for retiring or rehoming animals.

  • Embracing Streamlined Nonclinical Studies and Acceptable NAMs

    October 1, 2025
    FDA

    Published an online table containing an inventory of drug development contexts for which the Center for Drug Evaluation and Research (CDER) is open to a streamlined nonclinical program.

  • Reducing Reliance on Animal Models

    September 25, 2025
    NIH

    Announced $87 million investment to create the first dedicated organoid development center to reduce reliance on animal tests.

  • Creating an FDA-NIH Partnership on NAMs

    August 26, 2025
    FDA

    Established partnership between FDA and NIH to advance New Approach Methodologies (NAMs) and support alternatives to animal testing.

  • Advancing Alternative Testing Models

    August 15, 2025
    NIH

    Included the development of alternative testing models as a key priority in the Director’s Unified Strategy.

  • Making ISTAND Permanent

    July 31, 2025
    FDA

    Made the ISTAND (Innovative Science and Technology Approaches for New Drugs) Program permanent to support innovative drug development tools.

  • Stopping Animal-Only Funding Opportunities

    July 10, 2025
    NIH

    Stopped issuing funding opportunities that exclusively support animal models.

  • Meeting on Reducing Animal Testing

    July 7, 2025
    FDA

    Convened workshop focused on implementing novel methodologies and other strategies to reduce the use of animal testing.

  • Ending Taxpayer-Funded Animal Experiments

    May 28, 2025
    NIH

    Cut funding to a Harvard University lab for studies that included sewing the eyes of young monkeys shut.

  • Closed NIH Dog Lab

    May 1, 2025
    NIH

    Announced the closure of the last beagle laboratory on NIH campus.

  • Prioritizing Human-Based Research

    April 29, 2025
    NIH

    Launched animal testing reduction initiative, including training review staff and integrating experts on alternative methods into study sections.

Learn More

FDA 2026 Progress Report

FDA released a progress report on efforts to reduce animal testing, highlighting key actions since 2025 and outlining next steps.

Read the Report

New Approach Methodologies (NAMs)

These innovative testing methods use human-based systems, computer models, and other strategies to improve testing while reducing animal use.

Learn more about NAMs

Operation Trialblazer

An HHS initiative to modernize early drug development by reducing unnecessary animal testing and expanding human-based research methods.

Explore the Roadmap
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