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Abstract #3701

Identification of Prognostic Imaging Biomarkers in H3 K27-Altered Diffuse Midline Gliomas in Adults: Impact of Tumor Oxygenation Biomarkers

Yongsik Sim1, Yae Won Park1, Sung Soo Ahn1, and Seung-Koo Lee1
1Department of Radiology, Yonsei University College of Medicine, Seoul, Korea, Republic of

Synopsis

Keywords: Tumors (Pre-Treatment), DSC & DCE Perfusion

Motivation: The prognostic markers of H3 K27-altered diffuse midline gliomas (DMGs) in adults have yet to be studied.

Goal(s): To investigate prognostic markers for H3 K27-altered DMGs in adults, including clinical, qualitative, quantitative imaging phenotypes, and tumor oxygenation characteristics.

Approach: Clinical, qualitative, and quantitative imaging phenotypes were analyzed in 32 adults with H3 K27-altered DMGs. Cox analyses were conducted to determine predictors of overall survival in entire patients with H3 K27-altered DMG and subgroup of contrast-enhancing (CE) tumor.

Results: The presence of LM and higher rCMRO2 of CE tumor were independently associated with poor prognosis in adult patients with H3 K27-altered DMG.

Impact: Tumor oxygenation imaging biomarkers may provide valuable insight into the prognosis of H3 K27-altered diffuse midline gliomas, potentially reflecting higher metabolic activity in the tumor microenvironment.

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