NIH Commits $150 Million to Human-Based Research, Replacing Animal Models

The National Institutes of Health announced $150 million in first-round awards under Complement-ARIE, a program to develop and scale research methods that better simulate human biology while reducing reliance on animal models.

The March 18 announcement marks one of the largest federal investments in New Approach Methodologies — lab and computer-based techniques including organ-on-a-chip platforms, AI-driven physiological modeling, and advanced tissue engineering.

What the Program Funds

Complement-ARIE is structured around several components:

Technology Development Centers are tackling four disease areas: gynecological disorders, cardiac disease, neurological disorders, and rare diseases. Johns Hopkins University alone received $15 million to build a platform for studying neurological diseases and screening chemicals using NAMs.

A NAMs Data Hub and Coordinating Center will standardize data sharing across funded projects. The Validation and Qualification Network, backed by approximately $20 million from NIH and the Foundation for the National Institutes of Health, will advance NAMs through regulatory clearance processes with four initial pilot projects focused on preterm birth, developmental neurotoxicity, inhalation toxicity, and acute oral toxicity.

The program also launched a $7 million NAMs Reduction to Practice Challenge in partnership with the FDA and EPA.

Why Biotech Researchers Should Pay Attention

"These new projects are key steps in expanding and strengthening our scientific toolbox," said Nicole Kleinstreuer, NIH Deputy Director.

Complement-ARIE signals a durable federal commitment to replacing animal testing — an area where regulatory, scientific, and commercial incentives are converging. Biotech startups developing organ-on-chip technology, computational biology platforms, or AI-based drug screening tools now have a major NIH-backed market signal.

Researchers and small businesses working in these areas should monitor the NIH Common Fund for future funding rounds. Grant seekers can track NIH opportunities and deadlines on grantedai.com.

For deeper analysis of NIH funding shifts, visit the Granted blog.