Genomics‐led approach to drug testing in models of undifferentiated pleomorphic sarcoma
Undifferentiated pleomorphic sarcoma (UPS) is a rare cancer with limited systemic treatment options and poor outcomes. To seek novel therapeutic interventions, we undertook mutational analysis of 20 UPS patient tumours, four established UPS cell lines and three patient-derived xenograft (PDX) models. Frequently mutated genes were uncommon; in contrast, copy number (CN) events were common with CN gain frequently observed at genes including JUN, EGFR and CDK6 and loss at WNT8B, RB1 and PTEN. Analysis of overlapping genomic changes between patient tumours and PDX models or cell lines revealed druggable events. A selected panel of drugs targeting these was analysed in in vitro UPS models demonstrating that the mitogen-activated protein kinase kinase (MEK) inhibitor trametinib is synergistic in combination with the fibroblast growth factor receptor (FGFR) inhibitor infigratinib. This was further confirmed to be efficacious in an ex vivo tumour slice model. Taken together, our results demonstrate the rationale for utilising genomic data to identify drug classes targeting druggable events in low-prevalence cancers and indicate that trametinib alone or in combination with infigratinib should be further explored for clinical UPS management.
Authors
- Ailsa J. Oswald (ORCID: https://orcid.org/0000-0002-0702-3892)
- David S. Moura (ORCID: https://orcid.org/0000-0002-6514-2419)
- Valerie G. Brunton (ORCID: https://orcid.org/0000-0002-7778-8794)
- Morwenna Muir (ORCID: https://orcid.org/0000-0001-5835-3886)
- Javier Martín‐Broto (ORCID: https://orcid.org/0000-0001-7350-6916)
- Ali Al-Saadi (ORCID: https://orcid.org/0000-0002-2299-948X)
- Mary K. Danks
- Paul H. Huang (ORCID: https://orcid.org/0000-0003-3972-5087)
- Graeme R. Grimes (ORCID: https://orcid.org/0000-0002-3106-5996)
- Donald M. Salter (ORCID: https://orcid.org/0000-0002-4451-4375)
- Karen Sisley (ORCID: https://orcid.org/0000-0002-5565-2618)
- John C. Dawson (ORCID: https://orcid.org/0000-0001-5713-1026)
- John P. Thomson (ORCID: https://orcid.org/0000-0002-1630-3159)
- Larry Hayward
- Neil O. Carragher (ORCID: https://orcid.org/0000-0001-5541-9747)
- Piotr Manasterski (ORCID: https://orcid.org/0000-0002-8700-5458)
- Juan Díaz‐Martín (ORCID: https://orcid.org/0000-0002-3985-6434)
- Ana Teresa Amaral (ORCID: https://orcid.org/0000-0001-7887-4814)
- Ted R. Hupp (ORCID: https://orcid.org/0000-0003-0391-0352)
- Martin Lee (ORCID: https://orcid.org/0000-0001-6529-5784)
Institutions
- Institute of Cancer Research (GB)
- Instituto Cajal (ES)
- Edinburgh Cancer Research (GB)
- Hospital Universitario Fundación Jiménez Díaz (ES)
- Instituto de Biomedicina de Sevilla (ES)
- Center for Innovation (US)
- Hospital Universitario Virgen del Rocío (ES)
- Institute of Genetics and Cancer (GB)
- Universidad Autónoma de Madrid (ES)
- University of Coimbra (PT)
- Universidad de Sevilla (ES)
- University of Sheffield (GB)
- University of Edinburgh (GB)
Publication Details
- Journal
- Molecular Oncology
- Published
- 2025-05-26
- DOI
- https://doi.org/10.1002/1878-0261.70059
- Citations
- 1
- Primary Topic
- Sarcoma Diagnosis and Treatment
- Type
- article
- Field-Weighted Citation Impact
- 1.52
Funders
- Sarcoma UK
- Cancer Research UK
- Chief Scientist Office
- Associazione Italiana per la Ricerca sul Cancro
- Instituto de Salud Carlos III
- Institute of Genetics