About ThirtyFiveBio

Revolutionising gastrointestinal health

ThirtyFiveBio team

Experienced team of drug developers, target experts, investors and clinical KOLs.

James Westcott

CEO

Helen Carlile

Director of Operations

Josselin Caradec

Head of Biology

Chris Luckhurst, PhD

Head of Chemistry

Victoria Perroud

Project Manager

Sochi Otti

EA / Biotech Associate

We're hiring

Do you have the right skills to join our team of experts?

Board Members

Donmienne Leung

Director, Abbvie Ventures

Tom McCarthy

Executive Chair & co-founder, ThirtyFiveBio

Brent Ahrens

General Partner, Cannan Partners

Nils Lonberg

Exec in Residence, Canaan Partners

James Westcott

CEO

Founders

Tom McCarthy

Co-founder & Executive Chair

Kirsty McCarthy

Co-founder & CEO of MTM

Stuart Hughes

Co-founder & CEO of Nuage Therapeutics

Peter Joyce

Co-founder & CEO of Greywolf
Therapeutics

History of ThirtyFiveBio

Founded in 2021 by a team of drug discovery experts and entrepreneurs, ThirtyFiveBio emerged from academic and proprietary analyses showing that GPR35 gain-of-function drives epithelial dysfunction in GI diseases.

Our goal is to break the response ceiling for patients with ulcerative colitis by developing a drug that targets underlying epithelial causality and dysfunction. We aim to have tested this principle in patients by 2028.

“Human colitis is an epithelial disease and novel modalities are required to tackle this”.

  • ThirtyFiveBio founded to develop GPR35 antagonists for GI diseases, Oxford UK

2021

  • Data emerges showing strong GPR35 genetic association with IBD is driven by gain-of-function variance
  • GPR35 KO is protective in bacterial model of murine colitis
  • Scientific advisory team

2022-23

  • GPR35 antagonist discovery and optimisation and bioscience

2024

  • Advanced lead molecule with 3 series under patent protection
  • Synthetic route, scale up of lead antagonist
  • Translational research collaboration with the Kennedy Institute
  • Raising syndicated Series A to progress to clinic

2025

  • Preclinical development candidate
  • Preclinical PoC in patient-derived colitis epithelium
  • KOL translational advisory group

2026+

  • Clinic enabling
  • First-in-human 1H 2027

2021

  • ThirtyFiveBio founded to develop GPR35 antagonists for GI diseases, Oxford UK
  • $20M seed round Canaan Partners
  • Data emerges showing strong GPR35 genetic association with IBD is driven by gain-of-function variance
  • Scientific advisory team

2022-23

  • Innovate UK BMC £0.7M grant (Translational Grant)
  • GPR35 antagonist discovery and optimisation and bioscience

2024

  • Second Innovate UK BMC £0.7M grant (Precision Medicine Grant)
  • Advanced lead molecule with 3 series under patent protection
  • Synthetic route, scale up of lead antagonist
  • Translational research collaboration with the Kennedy Institute

2025

  • AbbVie Ventures invest alongside Canaan Partners and Mayewell Capital
  • Raising syndicated Series A to progress to clinic
  • Preclinical development candidate
  • Preclinical PoC in patient-derived colitis epithelium
  • KOL translational advisory group

2026

  • Clinic enabling
  • First-in-human 1H 2027

Proud to be part of the Molecule to Medicine Ecosystem

Molecule to Medicine (MTM), has expertise in founding biotech companies and supplying integrated, stage-appropriate business operations and R&D services to enable successful progression from set-up to clinic.

Companies supported by MTM operate as part of an Ecosystem: a unique arrangement which generates value by leveraging the expertise of its native network of drug discovery professionals and its robust operational model.

Ecosystem companies, including ThirtyFiveBio, accelerate their development of novel therapeutics, sharing learning from previous experience through this collaborative internal and external networks and partners.

Our values

Innovation

We use creative thinking to explore new ideas and ways of working, executing on our purpose and learning from our experiences.

Teamwork

We operate with respect, openness and transparency to deliver on our shared mission.

Excellence

We are striving to be the best in everything we do. We are accountable for our actions, resilient and courageous in our approach.

Momentum

We operate using agile methodologies to proactively drive the efficient delivery of our mission.

To learn more
about ThirtyFiveBio