SPEAKERS:
· Gavin Outteridge, General Manager, Arysana
· Aditi Tuteja, Global Head of Market Access Innovation, Specialty Care, Sanofi
KEY TAKEAWAYS:
· HEOR and economic value narratives are often gated and unindexed, making them structurally invisible to LLMs
· Sanofi teams report 50% less time on manual evidence work, redirected to strategic cross-functional orchestration
· Integrated Evidence Generation Planning (IEGP) platforms are pharma's unrecognized architecture for AI-era information authority
· At least one top 25 pharma has deployed unified evidence tooling enterprise-wide across all commercial and medical functions
· Payer objection simulation before HTA submission is emerging as AI's highest-value downstream market access application
The Evidence AI Cannot See
At Reuters Events: Pharma USA, Gavin Outteridge framed the session's premise as a launch execution challenge, specifically the problem of dynamically linking messaging, evidence, and TPPs with AI enablement to accelerate how teams use the science they generate. That is how the session was positioned. The most consequential insight landed a leap further on.
That came from Aditi Tuteja, and it doubles down on the investment case for Integrated Evidence Generation Planning (IEGP) platforms. "The biggest barrier is our HEOR and economic value narratives are not even indexed today," Tuteja said. "They're behind the gate, so LLMs don't even see your structured data. You may have a great structured format, but LLMs are not even getting to it just yet."
The content pharma invests the most to produce, validated with the most scientific rigor, relied on most heavily for HTA submissions and payer negotiations, is precisely the content that AI systems mediating healthcare information cannot access. The governance practices that make HEOR evidence trustworthy are the same practices that render it invisible. This runs in both directions: the more carefully a company controls access to its economic value narratives, the more completely those narratives are excluded from the AI systems increasingly mediating how physicians, payers, and patients evaluate treatments.
Rigorous Evidence Loses to Freely Crawlable Content
Pharma's evidence governance was designed for a world where information moved through human intermediaries. MSLs carried dossiers. Account teams briefed payer committees. Peer-reviewed journals gated clinical claims. In that world, controlling access protected quality. In an AI-mediated information ecosystem, those same controls create structural exclusion. Less rigorous, freely available content fills the void in LLM training data and retrieval, shaping AI responses about drugs whose most authoritative science is locked behind institutional walls.
Tuteja identified the specific mechanism: "Having a consistent message across the organization, having the right data linkage, gives us the citable authority you need for even LLMs to process this information. So having consistency across the organization's value messages that go out, those authoritative linkages from evidence and the other resources that are relevant to represent our data in appropriate light, are so critical to actually compete in the LLM space." The LLM visibility problem cannot be delegated to a digital marketing team optimizing metadata. It requires the upstream evidence architecture that market access has been building for entirely different reasons.
Outteridge extended this to what patients actually experience. When someone searches for drug information through ChatGPT or Google Gemini, the response "should link back to the source evidence, the published, peer-reviewed evidence that underpins any information that comes out, whether it's the patient labels or PI and so on." That aspiration currently fails at the first step. LLMs cannot retrieve what they cannot index.
The failure compounds in a specific and dangerous direction. "Generative AI can still make stuff up, and we don't want patients getting made-up information," Outteridge said. When pharma's structured evidence is invisible and unstructured web content is not, hallucination risk concentrates exactly where it is most dangerous: in the therapeutic areas where manufacturers have produced the most rigorous science but failed to make it discoverable. Outteridge argued that solving schema, indexability, and authoritative linkage determines "whether what any AI-enabled tool is producing is trustworthy, it can be relied on for healthcare decision-making." The organizations that solve this first will not simply improve their AI search visibility. They will determine whether the AI-mediated information ecosystem for their therapeutic area is built on peer-reviewed science or on whatever happens to be freely crawlable.
The Internal Infrastructure That Holds the External Fix
The LLM visibility crisis cannot be addressed externally until the internal evidence architecture is unified. LLMs reward authoritative, consistently messaged, well-structured content. Siloed organizations cannot produce it.
Tuteja's diagnosis is direct: "Traditionally, we've functioned in our functional silos of HEOR, medical, and market access, often working in parallel but not on one living roadmap. And that has created a structured gap of no single source of truth." That gap is both an internal efficiency problem and the root cause of the external discoverability failure. Inconsistent messaging across functions means even evidence that is publicly available lacks the coherent signal that LLM ranking algorithms treat as authoritative.
The strategic reframe Tuteja offered rejects the narrow productivity argument entirely. "AI in HEOR is not just about faster literature reviews or faster analysis," she said. "It is about integrated evidence generation planning. That's really where the opportunity lies." Integrated evidence planning produces the cross-functional messaging consistency that AI systems can recognize as a credible signal. The infrastructure required to compete in AI-mediated search is the same infrastructure required to run a coherent launch.
Tuteja described this as a cultural transition: from organizations that collect data to organizations that orchestrate insights, enabled by AI systems that standardize evidence ecosystems across functions. The 50% metric she cited captures the efficiency dimension: "The teams are spending 50% less time on the manual evidence effort, but they are doing more strategic orchestration across their cross-functional partners." The headline number matters less than what it signals. Teams moving from execution to orchestration are building precisely the cross-functional alignment that unified evidence architecture demands.
Outteridge provided the scale validation that moves this from theory to operational reality. "We now have one top-25 pharma enterprise-wide, all functions, commercial strategy, MPP, medical, HEOR, market access, working Arysana’s ATLAS – an example of a commercially-available, pharma-specific Integrated Evidence Generation Planning (IEGP) tool - for one consistent set of messaging and evidence generation planning." Enterprise-wide deployment across all commercial and medical functions is the organizational condition that makes authoritative, consistently messaged external content possible. The internal platform story and the external LLM authority story are, architecturally, the same story.
Citability as Infrastructure
Citability is an engineering requirement, not a documentation habit. Outteridge described Arysana's approach: every AI-generated suggestion in the ATLAS IEGP tool is designed to be "citable, referenced from the publications that it's drawing on." The company is operationalizing this through formal academic validation, with a poster published at ISPOR Europe in November and a second submitted to ISPOR Global in May. The healthcare-specific standard Outteridge articulated is unambiguous: "In healthcare in particular, you have to do the extra work to go the extra mile to make sure that what any AI-enabled tool is producing is trustworthy, it can be relied on for healthcare decision-making."
That trust infrastructure produces measurable competitive advantage downstream. Tuteja noted that Sanofi teams have become "more prepared for taking on early dialogue with HTA bodies. The more we have payer packages, the value proposition story ready to interrogate, we are able to simulate the payer objections and get those answers faster before the submission." Payer objection simulation before submission generates structured, evidence-linked content of exactly the type that external AI systems would need to surface accurate drug information to payers now conducting their own AI-assisted research. The output of internal HTA preparation is, latently, external AI-ready content. Almost no organization has begun to treat it that way.
The Dual-Use Architecture Pharma Hasn't Named Yet
Tuteja offered the benchmark statement of where Sanofi currently stands: "We've moved from AI as an experiment towards AI as a default infrastructure." That transition, from pilot to embedded operating model, is what separates organizations building durable capability from those running proof-of-concept exercises indefinitely.
Outteridge anchored the efficiency investment to its ultimate accountability metric: "Speeding and improving how quickly you can get this product and the evidence in support of it to the patients that need it." Every efficiency gain, every HTA preparation improvement, every reduction in manual evidence effort is meaningful only insofar as it compresses the distance between clinical science and the patients for whom it was generated.
The original insight this session surfaces, is that pharma's Integrated Evidence Generation Planning (IEGP) platforms are being built to solve a launch efficiency problem, but they also contain the architectural foundation for a second and arguably more significant challenge: establishing AI-era information authority in an ecosystem where LLMs are already mediating how physicians, payers, and patients form judgments about drugs. The two use cases share the same requirements: unified messaging, authoritative source linkage, cross-functional consistency, and validated citability. Building for one builds for both.
The organizations investing in evidence governance infrastructure today are inadvertently making the right bet for an AI-mediated future, provided they eventually recognize what they have built and act on it before competitors do. The gating problem will require deliberate resolution: structured data standards, schema design for indexability, and decisions about what evidence can be made discoverable without compromising competitive position or regulatory compliance. None of that is simple. But the prerequisite, a unified, consistently messaged, citable internal evidence architecture, is already being assembled at the most operationally advanced companies in the industry.
The question for every HEOR, market access, and commercial leader reading this is whether their organization will recognize the dual-use potential of what they are already building, or whether they will continue treating evidence governance as a launch efficiency project and discover too late that they built the right foundation and failed to use it. The organizations that extend their internal evidence architecture toward external discoverability before the next product cycle will set the terms for how LLMs represent their therapeutic areas. That window is open now. It will not stay open indefinitely.
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