Cancers (Sep 2023)

IGF2BP3 as a Prognostic Biomarker in Well-Differentiated/Dedifferentiated Liposarcoma

  • Kyle D. Klingbeil,
  • Jack Pengfei Tang,
  • Danielle S. Graham,
  • Serena Y. Lofftus,
  • Amit Kumar Jaiswal,
  • Tasha L. Lin,
  • Chris Frias,
  • Lucia Y. Chen,
  • Manando Nakasaki,
  • Sarah M. Dry,
  • Joseph G. Crompton,
  • Fritz C. Eilber,
  • Dinesh S. Rao,
  • Anusha Kalbasi,
  • Brian E. Kadera

DOI
https://doi.org/10.3390/cancers15184489
Journal volume & issue
Vol. 15, no. 18
p. 4489

Abstract

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Background: Although IGF2BP3 has been implicated in tumorigenesis and poor outcomes in multiple cancers, its role in soft-tissue sarcoma (STS) remains unknown. Preliminary data have suggested an association with IGF2BP3 expression among patients with well-differentiated/dedifferentiated liposarcoma (WD/DD LPS), a disease where molecular risk stratification is lacking. Methods: We examined the survival associations of IGF2BP3 via univariate and multivariate Cox regression in three unique datasets: (1) the Cancer Genome Atlas (TCGA), (2) an in-house gene microarray, and (3) an in-house tissue microarray (TMA). A fourth dataset, representing an independent in-house TMA, was used for validation. Results: Within the TCGA dataset, IGF2BP3 expression was a poor prognostic factor uniquely in DD LPS (OS 1.6 vs. 5.0 years, p = 0.009). Within the microarray dataset, IGF2BP3 expression in WD/DD LPS was associated with worse survival (OS 7.7 vs. 21.5 years, p = 0.02). IGF2BP3 protein expression also portended worse survival in WD/DD LPS (OS 3.7 vs. 13.8 years, p p p = 0.034). Conclusion: IGF2BP3 is highly expressed in a subset of WD/DD LPS. Across independent datasets, IGF2BP3 is also a biomarker of disease progression and worse survival.

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