Abstract
Background
Dysregulated lipid metabolism is associated with more aggressive pathology and poorer prognosis in prostate cancer (PC). The primary aim of the study is to assess the relationship between the plasma lipidome and clinical outcomes in localised and metastatic PC. The secondary aim is to validate a prognostic circulating 3-lipid signature specific to metastatic castration-resistant PC (mCRPC).
Patients and methods
Comprehensive lipidomic analysis was performed on pre-treatment plasma samples from men with localised PC (N = 389), metastatic hormone-sensitive PC (mHSPC)(N = 44), or mCRPC (validation cohort, N = 137). Clinical outcomes from our previously published mCRPC cohort (N = 159) that was used to derive the prognostic circulating 3-lipid signature, were updated. Associations between circulating lipids and clinical outcomes were examined by Cox regression and latent class analysis.
Results
Circulating lipid profiles featuring elevated levels of ceramide species were associated with metastatic relapse in localised PC (HR 5.80, 95% CI 3.04–11.1, P = 1 × 10−6), earlier testosterone suppression failure in mHSPC (HR 3.70, 95% CI 1.37–10.0, P = 0.01), and shorter overall survival in mCRPC (HR 2.54, 95% CI 1.73–3.72, P = 1 × 10−6). The prognostic significance of circulating lipid profiles in localised PC was independent of standard clinicopathological and metabolic factors (P < 0.0002). The 3-lipid signature was verified in the mCRPC validation cohort (HR 2.39, 95% CI 1.63–3.51, P = 1 × 10−5).
Conclusions
Elevated circulating ceramide species are associated with poorer clinical outcomes across the natural history of PC. These clinically actionable lipid profiles could be therapeutically targeted in prospective clinical trials to potentially improve PC outcomes.
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Acknowledgements
We gratefully acknowledge Maurene Giles and Cassandra Gordon (Australian Prostate Cancer BioResource) for collection and annotation of clinical follow-up data for the localised PC cohort; Anne-Maree Haynes (Garvan Institute of Medical Research), Lisa Graham (Chris O’Brien Lifehouse), Jessica Savage and Kayla Bremert (South Australian node coordinators of the Australian Prostate Cancer BioResource), the PRIMe consortium, and research nurses for collection of blood specimens and clinical data; Alexander Smith and Gavriel Olshansky (Baker Heart and Diabetes Institute) for their useful discussion on statistical analysis; our consumer representative Tony Maxwell for reviewing the paper; and the patients for their participation.
Funding
National Health and Medical Research Council of Australia (GNT0614296), Cancer Institute New South Wales (10/TPG/1-04, 2018/TPG001), Australian Prostate Cancer Research Centre-New South Wales, Australian Department of Health and Aging, the Movember Foundation and the Prostate Cancer Foundation of Australia (Revolutionary Team Award MRTA3), Cancer Council New South Wales (PG 10-01), Cancer Council South Australia (Beat Cancer Project Principal Cancer Research Fellowship, (PRF1117) to LMB), The Victorian Government’s Operational Infrastructure Support Program, National Institutes of Health grant award to MK (RO1-CA212097).
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AAA: Consultant—Astellas, Janssen, Novartis; Speakers Bureau—Astellas, Janssen, Novartis, Amgen; Honoraria—Astellas, Janssen, Novartis, Tolmar, Amgen, Pfizer, Telix; Scientific Advisory Board—Astellas, Novartis, Sanofi, Astra Zeneca, Tolmar, Pfizer, Telix; Research Funding—Astellas, Merck Serono, Bristol Myers Squibb (institutional), Astra Zeneca (institutional), Aptevo Therapeutics (institutional), Glaxo Smith Kline (institutional), Pfizer (institutional), MedImmune (institutional), Astellas (institutional), SYNthorx (institutional), Bionomics (institutional), Sanofi Aventis (institutional), Novartis (institutional). LGH: Research funding—Astellas; Travel sponsorship—Janssen, Pfizer; Honoraria—Imagion Biosystems. All remaining authors have declared no competing interests.
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Lin, HM., Huynh, K., Kohli, M. et al. Aberrations in circulating ceramide levels are associated with poor clinical outcomes across localised and metastatic prostate cancer. Prostate Cancer Prostatic Dis 24, 860–870 (2021). https://doi.org/10.1038/s41391-021-00338-z
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DOI: https://doi.org/10.1038/s41391-021-00338-z
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