Physician-Scientist · Oncologist · AI Innovator

Sean Khozin

MD, MPH

Advancing human health through the convergence of medicine, data science, and artificial intelligence.

Paper collage of a patient assembled from imaging, genomic and clinical records

At the nexus of medicine, technology & AI

Dr. Sean Khozin

Dr. Sean Khozin is a physician-scientist and oncologist, internationally recognized for his leadership in leveraging data science, AI, machine learning, and real-world evidence to drive innovation in biomedical research, with a particular emphasis on oncology drug development.

A founding member of the FDA Oncology Center of Excellence, Dr. Khozin escaped the revolution in Iran and found his way to the United States, harmonizing his passion for patients and data into a career spanning startups, the FDA, Johnson & Johnson, and pioneering AI ventures, all while pursuing his love of music.

His work bridges the gap between cutting-edge technology and clinical care, with a focus on harnessing advanced analytics and AI to accelerate drug discovery, optimize therapeutic development, and improve patient outcomes.

100+
Publications
6,000+
Citations
36+
h-Index

Three fields, one convergence

Dr. Khozin’s work sits where medicine, technology, and artificial intelligence meet. Select a field to see what it contributes and the publications behind it. The center is where the three become something new.

Medicine Technology AI Real-World Evidence Computable Disease Learning Systems Convergence
Convergence

Where the three overlap, the unit of evidence changes.

Medicine supplies the questions and the ground truth. Technology makes biology continuously measurable at the level of the individual. AI turns those measurements into models that can be interrogated, updated, and acted on.

Together they make the life sciences behave less like a sequence of one-off experiments and more like a learning system: trials that borrow strength from external data without giving up randomization, evidence generated at the point of care and not only in the trial, disease classified by mechanism instead of anatomy, and therapies matched to an individual rather than a population average.

This is the thread through Dr. Khozin’s career, from the clinic to the FDA to Johnson & Johnson, CancerLinQ, and Phyusion Bio: not any single field, but the operating system that connects them.

Together the three make the life sciences behave less like a sequence of one-off experiments and more like a learning system.

How evidence is generated: one-off experiments compared with a learning system
Dimension One-off experiment Learning system
01Trial design Each trial stands alone Borrows strength from external data, keeps randomization
02Evidence source Generated only inside the trial Also generated at the point of care
03Disease taxonomy Classified by anatomy Classified by mechanism
04Therapy matching Fitted to a population average Matched to the individual

Leading at the frontier

CEO Roundtable on Cancer & Project Data Sphere

Chief Executive Officer

Directing public health programs and pioneering initiatives focused on the development of AI foundation models in oncology.

Phyusion Bio

Founder

Subsidiary of Phyusion

Advancing innovations at the nexus of biology, technology, and AI to accelerate drug discovery and optimize therapeutic development.

Massachusetts Institute of Technology

Research Affiliate

Focusing on novel applications of AI and machine learning technologies to accelerate drug discovery and optimize therapeutic development strategies.

Precision Signals

Host

A podcast from the CEO Roundtable on Cancer, examining the hard problems in oncology and exploring practical solutions that connect science to patient impact.

From the clinic to the FDA to AI

Present

CEO, CEO Roundtable on Cancer & Project Data Sphere

Directing public health programs and pioneering AI foundation model initiatives in oncology.

Present

Founder, Phyusion Bio & Research Affiliate, MIT

Novel applications of AI/ML to accelerate drug discovery and optimize therapeutic development.

Previous

CEO, CancerLinQ (ASCO)

Led the restructuring and acquisition of the precision oncology enterprise leveraging real-world data and analytics.

Previous

Global Head of Data Strategy, Johnson & Johnson

Implemented cutting-edge data science solutions supporting the development of innovative medicines and vaccines.

Previous

Executive Director, FDA INFORMED

Established the FDA's first data science and technology incubator under special federal authorities.

Previous

Founding Member, FDA Oncology Center of Excellence

Helped build and launch the FDA's Oncology Center of Excellence, shaping the agency's approach to oncology drug regulation and review.

Previous

Clinical Investigator, National Cancer Institute

Conducted clinical research in oncology at the U.S. National Cancer Institute.

Previous

Co-founder, Hello Health

Pioneering TechBio company developing telemedicine, point-of-care data visualization, and advanced analytical systems.

Training

Fellowship, National Cancer Institute

Board-certified oncologist. Fellowship training following internal medicine residency.

Education

MD & MPH

Doctor of Medicine, University of Maryland School of Medicine. Master of Public Health, George Washington University. BS, University of Maryland.

The FDA’s first data science incubator

INFORMED launched with special HHS authorities

Information Exchange and Data Transformation (INFORMED) was launched in 2015 at the U.S. FDA with special authorities from the Department of Health and Human Services.

As a technology and data science incubator, INFORMED was designed as a public-private collaboration sandbox to de-risk innovations with transformative potential in biomedical research and therapeutic development.

The effort was instrumental in establishing the foundation for the use of real-world evidence, digital health solutions, and AI/ML in drug development and regulatory decision-making.

Launched
2015
Home
U.S. Food and Drug Administration
Authority
Special authorities from HHS
Model
Public-private collaboration sandbox
Published
Nature Reviews Drug Discovery, 2017 & 2018

Real-World Evidence

Pioneered frameworks for integrating real-world data into regulatory decision-making.

Digital Health

Advanced digital health solutions, including smart devices and decentralized clinical trials.

AI & Machine Learning

Established foundations for AI/ML adoption across the product life cycle.

The INFORMED Frameworks

INFORMED began from a simple premise: that the FDA, by virtue of its authority over how medicines are tested, reviewed and approved, can act as a catalyst for the entire drug development ecosystem, not only as its regulator. Data sits at the center of that role. By modeling and enabling new approaches, the agency could help the ecosystem move from static, structured datasets toward continuous, real-world evidence from electronic health records, devices and omics, expanding across the four dimensions of big data: volume, velocity, variety and veracity. With data at the core, drug development could then be reimagined, not as a linear pipeline, but as a learning system in three layers: systems biology that joins preclinical and clinical evidence, a learning health system that generates evidence at the point of care, and policy and investment decisions informed by network analysis, causal dynamics and game theory.

Click any ring to move an axis. The shaded area is the capacity envelope the data would demand.

Adapted from Figure 1 of From big data to smart data: FDA’s INFORMED initiative, Nature Reviews Drug Discovery, 2017. The numbered markers reproduce the paper’s placement of the 2017 baseline.

Modernizing how evidence is generated

Dr. Khozin's research spans regulatory science, clinical trial methodology, and data science, with a focus on modernizing how evidence is generated and applied in cancer drug development.

Laboratory glassware beside a DNA helix

Precision Oncology and Regulatory Science

As a clinical investigator at the National Cancer Institute, Dr. Khozin conducted clinical research in thoracic oncology and rare tumors, contributing to early-phase trials of molecularly targeted agents and novel combination regimens in lung cancer and thymic epithelial tumors.

This work included studies of IGF-1R-targeted therapy in thymoma, survivin suppression in NSCLC, the identification of ALK rearrangements in rare lung cancer histologies, characterization of germline EGFR T790M mutations, and the use of FDG-PET imaging as a predictive and prognostic tool in thymic malignancies. At the FDA, Dr. Khozin led several landmark accelerated and regular approvals that defined the modern paradigm of biomarker-driven oncology, including ceritinib (ALK-positive NSCLC), erlotinib (EGFR-mutant NSCLC), osimertinib (EGFR T790M NSCLC), and atezolizumab (metastatic NSCLC).

JCO Clinical Cancer Informatics · 2020 Patient-Centered Approach to Benefit-Risk Characterization Using Number Needed to Benefit and Number Needed to Harm: Advanced Non-Small Cell Lung Cancer British Journal of Cancer · 2020 Pre-Clinical Animal Models Are Poor Predictors of Human Toxicities in Phase 1 Oncology Clinical Trials Clinical Cancer Research · 2017 U.S. FDA Approval Summary: Atezolizumab for Metastatic Non-Small Cell Lung Cancer JAMA Oncology · 2017 Milestone Analyses of Immune Checkpoint Inhibitors, Targeted Therapy, and Conventional Therapy in Metastatic Non-Small Cell Lung Cancer Trials: A Meta-analysis Clinical Cancer Research · 2016 Osimertinib for the Treatment of Metastatic EGFR T790M Mutation-Positive Non-Small Cell Lung Cancer Therapeutic Innovation & Regulatory Science · 2016 Expanded Access of Investigational Drugs: The Experience of the Center of Drug Evaluation and Research Over a 10-Year Period Nature Reviews Drug Discovery · 2016 Evaluating the Potential for Digital Submission of Expedited Premarket Safety Reports to the FDA Journal of Thoracic Oncology · 2016 Clinician Perspectives on Current Issues in Lung Cancer Drug Development Clinical Cancer Research · 2016 The Majority of Expedited Investigational New Drug Safety Reports Are Uninformative Annals of Oncology · 2016 Selumetinib with and without Erlotinib in KRAS Mutant and KRAS Wild-Type Advanced Non-Small-Cell Lung Cancer JAMA Oncology · 2016 Benefit-Risk Summary of Nivolumab for Patients with Metastatic Squamous Cell Lung Cancer After Platinum-Based Chemotherapy: A Report from the US Food and Drug Administration Clinical Cancer Research · 2015 FDA Approval: Ceritinib for the Treatment of Metastatic ALK-Positive Non-Small Cell Lung Cancer Nature Reviews Drug Discovery · 2015 Why Do Oncology Drugs Fail to Gain US Regulatory Approval? Journal of Clinical Oncology · 2015 Overall Response Rate, Progression-Free Survival, and Overall Survival with Targeted and Standard Therapies in Advanced Non-Small-Cell Lung Cancer: US Food and Drug Administration Trial-Level and Patient-Level Analyses The Oncologist · 2014 U.S. FDA Approval Summary: Erlotinib for the First-Line Treatment of Metastatic NSCLC with EGFR Mutations The Lancet Oncology · 2014 Cixutumumab for Patients with Recurrent or Refractory Advanced Thymic Epithelial Tumours: A Multicentre, Open-Label, Phase 2 Trial Clinical Cancer Research · 2013 18F-FDG PET in the Management of Patients with Thymic Epithelial Tumors Annals of Oncology · 2013 A Phase I/II Study of Sepantronium Bromide (YM155, Survivin Suppressor) with Paclitaxel and Carboplatin in Patients with Advanced Non-Small-Cell Lung Cancer Clinical Lung Cancer · 2013 Concurrent Molecular Alterations in Tumors with Germ Line Epidermal Growth Factor Receptor T790M Mutations Journal of Thoracic Oncology · 2012 Hepatoid Carcinoma of the Lung with Anaplastic Lymphoma Kinase Gene Rearrangement Journal of Clinical Oncology · 2012 Response to Crizotinib in ROS1-Rearranged Non-Small-Cell Lung Cancer
Dr. Khozin working at a laptop in a library

Real-World Evidence and Clinical Trial Design

Dr. Khozin’s research has helped define the methodological foundations for using electronic health records and other real-world data to generate validated clinical endpoints, construct robust external control arms, and support regulatory decision-making in oncology.

His work demonstrated that real-world endpoints can meaningfully correlate with overall survival and be implemented at scale with scientific rigor. He has also advanced hybrid trial designs that integrate randomization with external data sources, developed approaches to improve the interpretation of clinical trials for underrepresented populations, and established practical frameworks for incorporating real-world evidence into both regulatory and treatment decisions.

JMIR Medical Informatics · 2026 Real-World Imaging Data: Opportunities and Challenges Advances in Therapy · 2026 Clinically Meaningful, Patient-Centered Endpoints for Real-World Evidence Generation in Breast Cancer: Perspectives from the Multidisciplinary TRIUMPH Initiative Advances in Therapy · 2025 Real-World Evidence Acceptability and Use in Breast Cancer Treatment Decision-Making The Oncologist · 2024 Unleashing the Power of Clinical Trial Data: A Proposal for Enhancing Informed Consent and Data Sharing Frontiers in Medicine · 2023 Real-World Evidence for Regulatory Decision-Making: Updated Guidance from Around the World Nature Communications · 2022 The Design and Evaluation of Hybrid Controlled Trials That Leverage External Data and Randomization Biochimica et Biophysica Acta Reviews on Cancer · 2022 A Novel Approach to Reducing Disparities in Health Outcomes by Enhancing Interpretation of Cancer Clinical Trials for Underrepresented Patient Groups Biochimica et Biophysica Acta Reviews on Cancer · 2021 A Digital Highway for Data Fluidity and Data Equity in Precision Medicine Journal for ImmunoTherapy of Cancer · 2021 Immune-Related Adverse Events Associated with Immune Checkpoint Inhibitors: A Call to Action for Collecting and Sharing Clinical Trial and Real-World Data Clinical Cancer Research · 2021 Impact of Broadening Trial Eligibility Criteria for Patients with Advanced Non-Small Cell Lung Cancer: Real-World Analysis of Select ASCO Recommendations Journal of Clinical Oncology · 2020 Status Update on Data Required to Build a Learning Health System Cancer · 2019 Real-World Progression, Treatment, and Survival Outcomes During Rapid Adoption of Immunotherapy for Advanced NSCLC JCO Clinical Cancer Informatics · 2019 Characterizing the Feasibility and Performance of Real-World Tumor Progression End Points JAMA · 2019 Association Between FDA Label Restriction and Immunotherapy and Chemotherapy Use in Bladder Cancer JCO Clinical Cancer Informatics · 2019 An Exploratory Analysis of Real-World End Points for Assessing Outcomes Among Immunotherapy-Treated Patients with Advanced Non-Small Cell Lung Cancer The Oncologist · 2018 Real-World Outcomes of Patients with Metastatic NSCLC Treated with PD-1 Inhibitors in the Year Following U.S. Regulatory Approval Health Affairs · 2018 Real-World Evidence in Support of Precision Medicine: Clinico-Genomic Cancer Data as a Case Study BMJ Evidence-Based Medicine · 2018 Assessing Function of Electronic Health Records for Real-World Data Generation The Oncologist · 2018 Characteristics of Real-World Metastatic Non-Small Cell Lung Cancer Patients Treated with Nivolumab and Pembrolizumab During the Year Following Approval Journal of the National Cancer Institute · 2017 Real-World Data for Clinical Evidence Generation in Oncology Cell · 2017 Core Clinical Data Elements for Cancer Genomic Repositories: A Multi-Stakeholder Consensus The New England Journal of Medicine · 2017 Advantages of a Truly Open-Access Data-Sharing Model
Brain MRI scans connected to circuit traces

Artificial Intelligence and Machine Learning in Drug Development

Dr. Khozin’s work in AI spans foundation models for oncology, LLM-based clinical trial data analysis, and regulatory frameworks for AI/ML adoption across the drug development life cycle.

At the FDA, he established Information Exchange and Data Transformation (INFORMED), the agency’s first data science and technology incubator, which laid the groundwork for integrating AI and digital health into drug development and regulatory decision-making.

A central focus of Dr. Khozin’s current work is modernizing how tumor burden is measured in clinical trials. In a large FDA-led meta-analysis of more than 14,000 patients enrolled in registration trials, he found that two independent radiologists reviewing the same scans agreed on tumor response classification only about 70% of the time. In ovarian and pancreatic cancers, discordance reached as high as 45%, with striking cases in which one reader determined a complete response while the other concluded progressive disease in the very same patient.

NEJM AI · 2025 The Use of Artificial Intelligence for Cancer Therapeutic Decision-Making medRxiv · 2025 Artificial Intelligence in Biomedical Data Analysis: A Comparative Assessment of Large Language Models for Automated Clinical Trial Interpretation and Statistical Evaluation Clinical and Translational Science · 2024 From Organs to Algorithms: Redefining Cancer Classification in the Age of Artificial Intelligence NPJ Digital Medicine · 2019 Artificial Intelligence and Machine Learning in Clinical Development: A Translational Perspective Clinical Pharmacology and Therapeutics · 2019 Decentralized Trials in the Age of Real-World Evidence and Inclusivity in Clinical Investigations Advances in Therapy · 2019 Generating Real-World Tumor Burden Endpoints from Electronic Health Record Data: Comparison of RECIST, Radiology-Anchored, and Clinician-Anchored Approaches Annals of Oncology · 2019 Analysis of Time-to-Treatment Discontinuation of Targeted Therapy, Immunotherapy, and Chemotherapy in Clinical Trials of Patients with NSCLC JCO Clinical Cancer Informatics · 2019 Machine-Learning and Stochastic Tumor Growth Models for Predicting Outcomes in Patients with Advanced Non-Small-Cell Lung Cancer NPJ Digital Medicine · 2019 Developing and Adopting Safe and Effective Digital Biomarkers to Improve Patient Outcomes Nature Reviews Drug Discovery · 2018 INFORMED: An Incubator at the US FDA for Driving Innovations in Data Science and Agile Technology Nature Reviews Drug Discovery · 2017 From Big Data to Smart Data: FDA's INFORMED Initiative Nature Reviews Drug Discovery · 2017 Biometric Monitoring Devices for Assessing End Points in Clinical Trials: Developing an Ecosystem

Two radiologists agree on tumor response only 70% of the time

In a large FDA-led meta-analysis of patients enrolled in registration trials, two independent radiologists reviewing the same scans agreed on tumor response classification only about 70% of the time. In ovarian and pancreatic cancers, discordance reached as high as 45%.

Inter-Reader Response Classification

Primary Investigator vs. Independent Radiologist · N = 13,677

Independent Radiologist
CR PR SD PD NE Total
Primary Investigator CR 305 250 116 14 25 710
PR 240 3,366 908 126 33 4,673
SD 64 849 3,522 668 74 5,177
PD 9 58 507 1,890 134 2,598
NE 1 13 31 49 425 519
Total 619 4,536 5,084 2,747 691 13,677
Concordant CR by one reader, PD by the other

Response categories per RECIST 1.1 (Response Evaluation Criteria in Solid Tumors): CR = Complete Response · PR = Partial Response · SD = Stable Disease · PD = Progressive Disease · NE = Not Evaluable. The highlighted diagonal cells are the only instances where both readers agreed on the same response classification. The red cells mark the 23 patients read as a complete response by one reader and progressive disease by the other. Overall discordance across tumor types was approximately 30%, with notably higher rates in ovarian and pancreatic cancers.

FDA meta-analysis of studies submitted to the agency · Khozin et al., Unpublished, 2017.

69.5%Overall concordance (9,508 / 13,677)
≤45%Discordance in ovarian and pancreatic cancers
23Patients read CR by one reader, PD by the other
Response · automated

AutoRECIST

AutoRECIST applies AI to automate and standardize tumor response assessment, eliminating inter-reader variability that undermines the reliability of clinical trial endpoints. By replacing subjective radiologist interpretation with algorithmic consistency, AutoRECIST produces reproducible, auditable response classifications at scale.

Burden · continuous

Total Tumor Burden Index (TTBI)

TTBI replaces conventional categorical RECIST endpoints with a continuous volumetric measure of total disease burden. By integrating 3D tumor segmentation across all lesions, TTBI enables earlier and more granular detection of treatment effect, capturing changes that binary response categories miss.

Mapping the Research

An interactive network of the concepts running through Dr. Khozin’s published work, generated with InfraNodus.

New funding models for high-risk, high-reward science

Breakthrough biomedical research is often too risky, too early or too slow for conventional capital, so promising science stalls in the “valley of death” between the lab and the clinic. Dr. Khozin’s work examines new ways to fund high-risk, high-reward research: structures that share risk across many programs, capital patient enough for drug development’s long timelines, and quantitative and AI methods, borrowed from finance, that measure each program’s risk more accurately.

The economics of cancer innovationRisk · Time · Evidence

When finance, not science, is the bottleneck

Oncology has entered an era in which it is “costlier to discover, harder to develop, and less rewarding to succeed.” Dr. Khozin’s work starts from that premise: many promising therapies fail not because the biology is wrong but because the capital structures around them do not fit the risk, cost and timelines of drug development. His work identifies four structural failures and engineers financing to correct them.

  1. Risk–return misalignment

    Individual cancer programs can fail more than 95% of the time, a risk profile conventional investors will not hold.

  2. The valley of death

    Promising preclinical science stalls before first-in-human trials, too early for most investors and too costly for academia.

  3. Short-term capital, long-term science

    Development takes 10 to 20 years, while most venture funds have ten-year lives and seek returns within five to seven, forcing exits midway.

  4. Misallocated investment

    Capital chases fashionable areas in boom-and-bust cycles, leaving high-need cancers underfunded.

The economics of a single program

Every drug program faces the same economic test: its expected value must exceed its cost, NPV × P ÷ C > 1. Science and trial design set the probability of success, development efficiency sets the cost, and pricing, policy and the cost of capital set the value. Use the sliders below to model a drug program: set its value if approved, its chance of approval and its development cost, and the calculator shows whether the program clears the threshold of 1 and would attract investment, or falls below it and would go unfunded.

NPVNet present value

The value, in today’s dollars, of all the profit a successful drug is expected to earn over its commercial life. Because sales arrive years in the future, each year’s profit is discounted back to the present at the return investors require for the risk they take (the cost of capital): the further away the money, the less it is worth today. At a 10% annual rate, $1 earned ten years from now is worth about 39¢ today.

NPV falls when revenue arrives later or capital costs more, and rises with better pricing, reimbursement and market access. It assumes the drug succeeds; the risk of failure is captured separately by P.

PProbability of success

The likelihood that a program reaches regulatory approval from its current stage of development. Multiplying NPV by P gives the program’s expected value.

CCost of development

The total investment required to bring the drug to approval, including preclinical work and every phase of clinical trials.

> 1The threshold

When expected value exceeds cost, the ratio is above 1 and the program is worth funding. Below 1, rational investors pass, however promising the science.

$3.0B

Raised by reimbursement, market access and a lower cost of capital.

10%

Raised by better science and patient selection, such as biomarker-driven trials and AI.

$250M

Lowered by streamlined trials and real-world data.

NPV × P ÷ C 1.20 Fundable: expected value exceeds cost

Worked example: CEO Roundtable on Cancer report, March 2025.

Novel financing frameworks

Dr. Khozin’s work focuses on the following financing structures and how they can be applied to correct those failures. Select one for how it works and how it helps.

In practice · March 2025

CEO Roundtable on Cancer, New York

One example of this work: a roundtable Dr. Khozin designed and led as CEO of the CEO Roundtable on Cancer, bringing leaders from science, finance and policy together around these failures and the frameworks to address them, with a keynote by MIT’s Andrew Lo.

Read the report (PDF) →

Jazz meets classical in suspended time

Physiological Harmony and Dissonance

The Confluence of Math, Music, and Medicine

How physiological state changes can be represented musically: the composition Perpetual Drift proposes that transitions in human physiology, detectable through computational methods, can also be heard as shifts in tonality and dissonance.

Read on Substack →

Select board appointments & advisory roles

A nonprofit bridging scientific discovery and clinical application in oncology, promoting equitable cancer care and fostering the translation of new therapies through education and global collaboration.

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An AI biotech company using machine learning and federated learning to accelerate drug discovery, optimize clinical trials, and develop AI-powered diagnostics from multimodal patient data.

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A personalized health company using AI to analyze the gut microbiome, delivering actionable insights on diet and lifestyle to help people identify root causes of chronic health issues.

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A Stanford spinout generating publication-grade real-world evidence in minutes using AI, closing the evidence gap where only 14% of daily medical decisions are backed by high-quality data.

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An international multi-stakeholder advocacy organization promoting the responsible development, regulation, and adoption of AI-powered healthcare solutions across industry, government, and academia.

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A global nonprofit advancing the ethical, effective, and equitable use of digital medicine by convening diverse stakeholders and producing open-source resources used by the FDA, NIH, and top pharma companies.

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A biotech company developing precision oncology therapies through functional cytometric profiling, testing living tumor samples directly against therapeutic agents to treat cancers with minimal toxicity.

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An AI-native software company automating regulatory submissions for drug development, transforming source data into compliant, submission-ready dossiers across global health authorities.

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Get in touch

Dr. Khozin speaking at a podium

Interested in collaborating on research, speaking engagements, or advancing AI-driven innovation in healthcare?