Senior Partner · The Bracken Group

Jonathan Larkin, PhD

Osteoarthritis Drug Development · Translational Biomarkers · Early Clinical Development
Drug developer with more than 20 years at GSK and Eli Lilly who took two osteoarthritis candidates to selection and led a €17.5 million European consortium from inception to completion.
€17.5MConsortium Funding Secured
30+Peer-Reviewed Publications
23GSK R&D Impact Awards
2Candidate Selections

Executive Summary

Jonathan (Jon) Larkin, PhD, is a Senior Partner at The Bracken Group and President and Founder of SynOA Therapeutics. He is a drug developer with more than 20 years in the pharmaceutical industry, most of it at GSK, where he shaped corporate strategy for osteoarthritis and led a team that discovered disease-modifying therapeutics. Two of those efforts, a monoclonal antibody and a small molecule, reached candidate selection.

Jon then moved into clinical development as an Early Development Leader, drafting protocols, informed consents, investigator brochures, and IND submissions, and led biomarker strategy for four clinical projects. He conceived and secured €17.5 million for the IMI APPROACH consortium and coordinated its 25 academic and industry partners for seven years, including a five-center, 300-patient study to characterize osteoarthritis patient subsets. He also chaired an Innovate UK stratified medicine consortium and served as an industry partner on the FNIH OA Biomarkers Consortium.

He trained as a viral immunologist, earning his PhD in Pathology and Cell Biology at Thomas Jefferson University, where he developed a novel hepatitis B virus SCID mouse model, before postdoctoral work on hepatitis C at Eli Lilly and innate immunity at Indiana University.

Areas of Expertise

Osteoarthritis Drug Development

Disease-modifying osteoarthritis therapeutics, biologic and small molecule, from target validation through candidate selection.

Translational Biomarkers

Target engagement and pharmacodynamic biomarkers, including a companion lab-based assay, with biomarker strategy for four clinical projects.

Early Clinical Development

Clinical protocols, informed consents, investigator brochures, IND submissions, and study conduct under GCP.

Patient Stratification

Phenotypes and molecular endotypes that identify osteoarthritis patient subsets for stratified experimental medicine.

Consortium Leadership

Conceiving, funding, and running public-private consortia across IMI, Innovate UK, and the FNIH Biomarkers Consortium.

Preclinical Pharmacology

PK/PD, biodistribution, and route of administration studies in rodent, canine, and NHP models to support IND filings.

Career History

2023 – Present
Senior Partner
The Bracken Group
2022 – Present
President & Founder
SynOA Therapeutics
2015 – 2022
Project Coordinator & Co-PI, APPROACH Consortium
Innovative Medicines Initiative, European Union
Secured €17.5M and led 25 partners through a seven-year project, including a five-center, 300-patient clinical study.
2018 – 2022
Associate Director, Novel Human Genetics
GlaxoSmithKline
Also served as GSK’s osteoarthritis subject matter expert.
2016 – 2018
Early Development Leader, Immuno-Inflammation
GlaxoSmithKline
Clinical protocols, informed consents, investigator brochures, and IND submissions.
2009 – 2016
Manager, Biopharm R&D Unit; Senior Scientific Investigator, Immuno-Inflammation
GlaxoSmithKline
Led osteoarthritis discovery efforts that produced antibody and small molecule candidate selections; chaired a £2M Innovate UK consortium.
2002 – 2004
Post-Doctoral Fellow, Microbiology & Immunology
Indiana University
2000 – 2002
Post-Doctoral Scientist, Infectious Diseases Research
Eli Lilly and Company
Animal models of hepatitis C infection for therapeutic efficacy testing.

Selected Publications

  • 2022
    Osteoarthritis Endotype Discovery via Clustering of Biochemical Marker Data
    Annals of the Rheumatic Diseases · Angelini F, Widera P, … Larkin J, Bay-Jensen AC, Bacardit J.
  • 2020
    Cohort Profile: The Applied Public-Private Research Enabling OsteoArthritis Clinical Headway (IMI-APPROACH) Study
    BMJ Open · van Helvoort EM, van Spil WE, … Larkin J, … Lafeber FPJG.
  • 2019
    Molecular Taxonomy of Osteoarthritis for Patient Stratification, Disease Management and Drug Development
    Current Opinion in Rheumatology · Mobasheri A, van Spil WE, … Larkin J, Levesque MC, Gualillo O, Henrotin Y.
  • 2017
    Osteoarthritis Year in Review 2016: Biomarkers (Biochemical Markers)
    Osteoarthritis and Cartilage · Mobasheri A, Bay-Jensen AC, van Spil WE, Larkin J, Levesque MC.
  • 2015
    Translational Development of an ADAMTS-5 Antibody for Osteoarthritis Disease Modification
    Osteoarthritis and Cartilage · Larkin J, Lohr TA, Elefante L, … Matheny CJ.
  • 2014
    Quantitation of ARGS Aggrecan Fragments in Synovial Fluid, Serum and Urine from Osteoarthritis Patients
    Osteoarthritis and Cartilage · Germaschewski FM, Matheny CJ, Larkin J, … Graham NM.
  • 2012
    Discovery of Highly Potent and Selective Small Molecule ADAMTS-5 Inhibitors That Inhibit Human Cartilage Degradation via Encoded Library Technology
    Journal of Medicinal Chemistry · Deng H, O’Keefe H, … Larkin J, … Morgan BA.
  • 1999
    Hepatitis B Virus Transgenic Mouse Model of Chronic Liver Disease
    Nature Medicine · Larkin J, Clayton M, Sun B, … Feitelson MA.
View all publications

Ready to work together?

Bring Jon’s expertise to your next clinical or imaging program. Let’s discuss your project.

Work with Jon