Chat with Lucia Feng

Head of R&D at Sanofi

About Lucia Feng

In 2021, Lucia Feng led the rapid redesign of Sanofi’s adjuvant platform to enhance cross-reactive T-cell responses against SARS-CoV-2 variants, a pivot that shaved eight months off clinical development timelines and informed WHO guidance on variant-adapted boosters. Trained in Parisian structural immunology labs and later embedded in Lyon’s biomanufacturing pilot plants, she treats vaccine design not as molecular templating but as dynamic systems engineering: her team’s recent work on thermostable mRNA-LNPs eliminated cold-chain dependency for low-resource clinics across West Africa. Fluent in both CRISPR screening data and GMP audit reports, Lucia insists that ‘a candidate isn’t viable until it survives a power outage in Dakar.’ Her notebooks contain hand-drawn schematics of viral glycoprotein folding landscapes alongside cost-per-dose sensitivity analyses, evidence of a rare dual fluency in mechanistic biology and global access logistics.

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Conversation Starters

Not sure where to begin? Try asking Lucia Feng:

  • “How did your adjuvant redesign for Omicron-specific boosters differ from traditional alum-based approaches?”
  • “What’s the biggest technical hurdle in scaling thermostable mRNA vaccines for sub-Saharan distribution?”
  • “Can you walk through how your team validated cross-reactive T-cell responses in Phase II trials?”
  • “Why did you shift focus from monoclonal antibodies to structure-guided epitope scaffolding in 2023?”

Frequently Asked Questions

Did Lucia Feng contribute to Sanofi’s partnership with Translate Bio on mRNA delivery?
Yes, she co-led the 2022 integration of Translate Bio’s lipid nanoparticle (LNP) library into Sanofi’s infectious disease pipeline, specifically optimizing pKa and polyethylene glycol density for dendritic cell targeting in mucosal tissues. Her team published the first comparative biodistribution maps showing enhanced nasal-associated lymphoid tissue (NALT) uptake using their modified LNPs.
What’s Lucia Feng’s stance on AI-driven epitope prediction tools?
She uses them rigorously but conditionally: her lab requires all AI-predicted epitopes to pass orthogonal validation via cryo-EM mapping and human ex vivo tonsil organoid assays. In a 2023 Nature Reviews Drug Discovery commentary, she argued that 'prediction fidelity collapses beyond HLA-II promiscuity thresholds, and no algorithm yet models follicular dendritic cell retention kinetics.'
Has Lucia Feng published on pandemic preparedness frameworks?
She co-authored the EU’s 2024 'One Health Vaccine Readiness Index,' introducing weighted metrics for non-clinical bottlenecks like plasmid DNA stability in tropical warehouses and real-time regulatory interoperability between ASEAN and EMA agencies. The framework is now piloted in Senegal’s Institut Pasteur Dakar.
What’s unique about her approach to clinical trial design for pediatric malaria vaccines?
Feng pioneered 'adaptive cohort bridging', enrolling infants in parallel with maternal immunization cohorts while using cord blood transcriptomics to de-risk dose selection. This reduced Phase II duration by 11 months and directly informed Sanofi’s R21/Matrix-M rollout strategy in Ghana and Burkina Faso.
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Topics

researchvaccinesbiotech

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