Research Article

Prognostic impact of metabolic tumor volume and total lesion glycolysis in multiple myeloma

Volume: 19 Number: 1 January 9, 2026
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Prognostic impact of metabolic tumor volume and total lesion glycolysis in multiple myeloma

Abstract

Purpose: 18F-2′-deoxy-2′-fluorodeoxyglucose positron emission tomography (18F-FDG PET) is a critical imaging tool for diagnosing multiple myeloma (MM), providing comprehensive insights into tumor burden and disease proliferation capacity. We evaluated the value of pretreatment 18F-FDG PET parameters in forecasting survival in patients with MM. Materials and methods: Between October 2019 and March 2024, a cohort of 41 patients with MM who received pretreatment 18F-FDG PET scans was retrospectively analyzed. Clinical characteristics, treatment response, and survival data were systematically evaluated. Results: The median progression-free survival (PFS) was 28.51±3.82 months, while the median overall survival (OS) was calculated as 34.57±3.9 months. The presence of extramedullary disease (EMD), high metabolic tumor volume (MTV), and elevated total lesion glycolysis (TLG) were significantly associated with an increased risk of progression (p<0.05), establishing them as poor prognostic factors for PFS. Similarly, high MTV, maximum standardized uptake value (SUVmax, SUVmean, and TLG were strongly correlated with an increased mortality risk (p<0.05) and were identified as adverse prognostic factors for overall survival. In multivariate analysis, MTV and TLG were confirmed to be independent prognostic factors for OS, supporting their role in predicting prognosis in MM. Conclusion: MTV and TLG were found to have important prognostic implications in multiple myeloma. Since these parameters reflect volumetric and metabolic tumor burden, their integration into the International Staging System (ISS) may improve risk stratification and prognosis assessment.

Keywords

Supporting Institution

All authors declare that they have no relevant financial or non-financial interests, whether directly or indirectly related to the submitted work, to disclose. This research received no specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

Ethical Statement

This study was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the Ethics Committee of the Pamukkale University and written informed consents were obtained from each patient or first-degree relatives of the patient.

Thanks

The authors would like to express their gratitude to all those involved in reporting patients and collecting data.

References

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Details

Primary Language

English

Subjects

Haematology , ​Internal Diseases , Radiology and Organ Imaging

Journal Section

Research Article

Early Pub Date

January 9, 2026

Publication Date

January 9, 2026

Submission Date

October 15, 2025

Acceptance Date

December 3, 2025

Published in Issue

Year 2026 Volume: 19 Number: 1

AMA
1.Alayvaz Aslan N, Şengöz T, Kiliç MC, Özkaya Kutluay F, Şenol H, Güler N. Prognostic impact of metabolic tumor volume and total lesion glycolysis in multiple myeloma. Pam Med J. 2026;19(1):151-162. doi:10.31362/patd.1803682

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