Q: What is Trilenda?

Trilenda SRL is a Belgian company delivering advanced analytics for regulated life sciences. It is a single legal entity with one team, working from offices in Leuven, and it delivers through three brands: Arlenda, Esylos and Sanaitio.

Q: What is the relationship between Trilenda, Arlenda, Esylos and Sanaitio?

Arlenda, Esylos and Sanaitio are commercial brands of Trilenda SRL. They have no separate legal identity: contracts, invoicing and liability sit with Trilenda SRL. A single customer can work with more than one brand at the same time.

Q: What does each Trilenda brand do?

Arlenda publishes statistical software for biopharma: Enoval for analytical and bioassay method validation and transfer, and Stabelity for stability, shelf life and release limits. Esylos provides decision support for drug and device development under uncertainty. Sanaitio consults on AI-based medical devices through its Trust by Design framework.

Q: Is the team shared across the three brands?

Yes. Trilenda is one team of six, based in Leuven. The same senior people work across Arlenda, Esylos and Sanaitio, with decades of experience in life sciences and in what regulators expect, and all three rest on the same core: advanced analytics, applied statistics, Bayesian inference, causal modelling, AI and automation.

Q: Where is Trilenda based?

Trilenda's offices are at MC-Square Leuven, Philipssite 5 bus 1 (Ingang B), 3001 Leuven, Belgium. The legal entity, Trilenda SRL, is incorporated in Charleroi (registered office Rue Clément Ader 10, 6041 Charleroi; VAT BE1028.924.134). The team serves clients across the European Union, United Kingdom, Switzerland and the United States.

Our brands

Services

Esylos

Decision support for drug and device development under uncertainty.

Esylos works with drug and device teams on the decisions data alone will not settle: which programme to back, which trial to design, which process or specification to commit to. Expert judgment, historical data, literature and internal experiments go into one causal and Bayesian model, what is still unknown is quantified rather than assumed, and the options are simulated before anything is committed.

Biotechs in rare disease and ATMP, pharma teams scaling a manufacturing process, and IVD and device developers use it to reach a recommendation that stays traceable from evidence to conclusion, in the form FDA and EMA reviewers expect.

esylos.com

Software

Arlenda

Two statistical software products for biopharma, Enoval and Stabelity.

Automated, submission-ready reports. A report that would otherwise take hours comes out of Enoval or Stabelity in under two minutes, 21 CFR Part 11 qualified and aligned with ICH Q2(R2), ICH Q14, ICH M10 and USP <1210>.

Enoval covers analytical method validation, bioassay validation and method transfer; Stabelity covers stability, shelf life, release limits and out-of-trend detection. The questions a GMP lab has to answer anyway, answered in a form that goes straight into the dossier.

arlenda.com

Services

Sanaitio

Consulting for AI-based medical devices, built on Trust by Design.

Sanaitio helps medtech companies develop, validate and deploy AI-based medical devices that earn clinical adoption as well as regulatory approval. Validation is designed in from the start rather than assembled after clearance.

The intended clinical outcome is fixed before the data, the model or the protocol; clinical validation covers workflow mapping, Bayesian protocol design and sample-size justification under uncertainty; and deployment is followed by local calibration, drift detection and quality control.

sanaitio.com

The three are commercial brands of Trilenda SRL, with no separate legal identity. Every contract, invoice and liability sits with Trilenda SRL. One client can work with more than one brand at the same time.

Our team

Sophie Guillaume

Chief Executive Officer

Sophie leads Trilenda across Arlenda, Esylos and Sanaitio. She brings over 30 years of international experience in regulatory consulting and operations, building and scaling organisations in complex regulated environments.

Arnaud Monseur

Chief Scientific Officer

Arnaud is a Bayesian biostatistician with over 10 years in pharma, specialising in innovative statistical methodologies for clinical and CMC development. He serves on the BAYES Scientific Committee and is President of the Quetelet Society.

Nils Boulanger

Chief Technology Officer | Co-founder

Nils is an engineer and data scientist leading technical architecture and AI-driven decision support across the group, with experience in deep learning, agentic AI and automation. He designs and runs the sovereign infrastructure the three brands operate on, keeping client data under the client's control.

Bruno Boulanger

Senior Scientific Advisor | Co-founder

Bruno is a recognised leader in applied statistics with over 30 years of experience across pharmaceutical and medical device development. He has held senior roles at Eli Lilly and UCB, founded Arlenda in 2003, published over 100 scientific papers and launched the BAYES conference series.

Cédric Dubourg

Head of Software | Head of IT

Cédric is the lead developer behind Arlenda's software, with nearly two decades of experience across banking, insurance and pharmaceutical services. He has built and maintained the platform since 2010, working across Java, web technologies, cloud infrastructure, containerisation and database management.

Gaëlle Martin

Head of Quality Assurance

Gaëlle brings 20+ years of QA leadership. She builds quality management systems aligned with GMP, GCP, GAMP 5 and ISO 9001/13485, and runs computerised system validation across complex GxP projects.

Contact

Most enquiries are best answered by one of the three brands directly. If yours is about the company itself (partnerships, press, administration), use the form below.