

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.
Featured actions
Innovation
Investment
Validation
HHS milestones
Investing in Infrastructure for Human-Based Research
September 21, 2026
NIHAnnounced 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
NIHAnnounced 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
NIHLaunched an initiative to recruit grant reviewers with expertise in human-based science.
Tracking Animal Use in NIH Research
September 21, 2026
NIHIssued 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
FDAIssued 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
FDAPublished 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
FDASelected 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
NIHA 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
NIHAwarded $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
FDAPublished 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
FDAHeld 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
NIHLaunched 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
FDAFDA–HESI–Safety Pharmacology Society hybrid workshop on NAMs integration into safety pharmacology.
Investing in Human-Based Cancer Research
July 28, 2026
NIHDirected $15M for a technology development center to predict cancer patient responses using human-based science.
Coordinating NAMs Across FDA
July 1, 2026
FDAEstablished FDA’s NAMs Steering Committee to guide and coordinate New Approach Methodologies across the agency.
Modernizing Drug Tool Qualification
July 1, 2026
FDACompleted the move of all Drug Development Tool (DDT) Qualification Program activities to FDA’s OneNexus Platform.
Establishing NAMs Qualification Task Force
July 1, 2026
FDAEstablished 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
FDARequested data on a pH cycling test model for evaluating over-the-counter anticaries drug products.
Created New NIH Office
June 15, 2026
NIHLaunched 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
FDAIssued 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
FDAIssued draft guidance to streamline nonclinical safety studies for certain oncology biologics and conjugated products.
Reporting Progress on Animal Testing
April 20, 2026
FDAPublished 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
FDAPublished 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
FDAEstablished 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
FDALaunched 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
NIHAnnounced $150 million investment to facilitate NAM development in the areas of greatest scientific and regulatory need.
Guiding NAMs in Drug Development
March 18, 2026
FDAIssued draft guidance on general considerations for using New Approach Methodologies (NAMs) in drug development.
Updating Pyrogen and Endotoxins Testing Guidance
March 18, 2026
FDAUpdated guidance on pyrogen and endotoxin testing, including approaches that can reduce reliance on animal testing.
Advancing Computational Toxicology
March 1, 2026
FDAEstablished an FDA-NIH-ARPA-H collaboration to develop toxicology databases and computational approaches through CATALYST.
Reducing Reliance on Animal Testing
February 26, 2026
FDAHeld 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
FDAReestablished FDA’s agency-wide NAMs Program Workgroup to coordinate and advance New Approach Methodologies across FDA.
Streamlining Antibody Safety Studies
December 2, 2025
FDAIssued draft guidance on streamlined nonclinical safety studies for certain monoclonal antibodies.
Reviewing NAMs in Drug Development
December 1, 2025
FDAPublished 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
FDAQualified 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
FDAPublished 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
FDAPublished 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
NIHChanged NIH policy to allow grant funding to be used for retiring or rehoming animals.
Embracing Streamlined Nonclinical Studies and Acceptable NAMs
October 1, 2025
FDAPublished 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
NIHAnnounced $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
FDAEstablished partnership between FDA and NIH to advance New Approach Methodologies (NAMs) and support alternatives to animal testing.
Advancing Alternative Testing Models
August 15, 2025
NIHIncluded the development of alternative testing models as a key priority in the Director’s Unified Strategy.
Making ISTAND Permanent
July 31, 2025
FDAMade 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
NIHStopped issuing funding opportunities that exclusively support animal models.
Meeting on Reducing Animal Testing
July 7, 2025
FDAConvened workshop focused on implementing novel methodologies and other strategies to reduce the use of animal testing.
Ending Taxpayer-Funded Animal Experiments
May 28, 2025
NIHCut funding to a Harvard University lab for studies that included sewing the eyes of young monkeys shut.
Closed NIH Dog Lab
May 1, 2025
NIHAnnounced the closure of the last beagle laboratory on NIH campus.
Prioritizing Human-Based Research
April 29, 2025
NIHLaunched 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.
New Approach Methodologies (NAMs)
These innovative testing methods use human-based systems, computer models, and other strategies to improve testing while reducing animal use.
Operation Trialblazer
An HHS initiative to modernize early drug development by reducing unnecessary animal testing and expanding human-based research methods.