A new source of truth for human biology
We're using AI to transform donated human organs & tissues into
high-fidelity biological data, shared insight, and faster decisions.
Five Layers One Truth
Each layer of The Human Data Stack maps directly to a stage in the journey from raw biological signal to actionable clinical intelligence with AI embedded at every junction.
Transform donated organs & tissues into rich, multi-modal biological datasets.
Capture real-time physiology, histories, and molecular insights across multi-length scales.
Connect multi-dimensional human-derived datasets
Apply foundational models to decode complex data.
Provide decision-ready insights for drug & device development.
Unlocking theNext Generationof Medicine
Today, medicine still depends on models that only approximate human biology. That slows development, puts patient lives at risk, and leaves critical decisions to guesswork.
The Human Data Stack
End-to-end infrastructure for generating, integrating, and delivering human-biology insight at scale.
Our Founding Story
Revalia was founded through the 10+ year relationship of Greg, Jenna, and Kourosh when they had the simple realization: organs don't have to be transplantable to be transformative.
Founded
Founded by Yale scientists Greg Tietjen, Jenna DiRito & Kourosh Saeb-Parsy
Revenue Generated
Generated first revenue from human organ research services
Raised Seed Round
Secured seed funding to scale the Human Data Stack platform
Opened Organ ICU
Launched state-of-the-art Organ ICU facility for human data trials
Science First
Every decision anchored in rigorous scientific inquiry
Revenue from Day One
Built a sustainable business from the earliest stages
World-Class Infrastructure
Purpose-built facilities for human organ research at scale
Government Trust
Trusted by government agencies for critical health research
Behind Every Discovery
Is a Gift of Hope
Our Promise
Dear Donors and Donor Families,
I want you to know that your decision — made in one of the most difficult moments of your life — carries a weight and a beauty that words can hardly capture. By choosing to donate, you have transformed your loss into a lifeline for others.
We hold your gift with the reverence it deserves. Every organ entrusted to Revalia is treated not as a specimen, but as a sacred trust — a piece of someone you loved deeply.
Working alongside organ procurement organizations and healthcare partners, we ensure that when an organ cannot save a life through transplant, it is given the chance to save thousands through discovery.
Your generosity lives on in every answer we find, every therapy we help create, and every patient whose life may one day be changed. You have given us the most profound gift — the chance to turn heartbreak into hope.
With deep gratitude and respect,
Greg Tietjen
Co-Founder & Chief Executive Officer
In partnership with leading organ procurement organizations (OPOs) and healthcare institutions, we ensure every donor gift is handled with the highest ethical standards, transparency, and respect throughout its lifecycle.
Expertise Across the Full
Human Data Stack
From transplantation and translational science to AI, hardware, software, and operations.
Greg Tietjen
Former Assistant Professor at Yale; pioneer of human organ research
Jenna DiRito
World leading expert in human organ research operations
Janeta Nikolovski
Formerly with Johnson & Johnson, 25 yrs Research & Product Development across Pharma, Biotech, Med Device, Digital and Consumer Products
Helen Hughes
Former Senior Executive at Amazon, 20 years creating high performance teams in rapid growth organizations
Greg Tietjen, PhD
Former Assistant Professor at Yale; pioneer of human organ research
Jenna DiRito, PhD
World leading expert in human organ research operations
Janeta Nikolovski, PhD
Formerly with Johnson & Johnson, 25 yrs Research & Product Development across Pharma, Biotech, Med Device, Digital and Consumer Products
Helen Hughes
Former Senior Executive at Amazon, 20 years creating high performance teams in rapid growth organizations
Bridge the Gap Between Biology & Breakthrough
Whether you're seeking information, sharing insights, or exploring potential collaborations, we value your time and look forward to hearing from you.
Share your current challenges and goals
See how our platform can address your needs
Build a custom solution for your pipeline
Join UsDecodingHuman Biology
We're building a new category at the intersection of biology, AI, and infrastructure.
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