J 2023

Optimizing biomarkers for accurate ependymoma diagnosis, prognostication, and stratification within International Clinical Trials: A BIOMECA study

CHAPMAN, Rebecca J, David R GHASEMI, Felipe ANDREIUOLO, Valentina ZSCHERNACK, Tauziede Espariat ARNAULT et. al.

Základní údaje

Originální název

Optimizing biomarkers for accurate ependymoma diagnosis, prognostication, and stratification within International Clinical Trials: A BIOMECA study

Autoři

CHAPMAN, Rebecca J, David R GHASEMI, Felipe ANDREIUOLO, Valentina ZSCHERNACK, Tauziede Espariat ARNAULT, Francesca R BUTTARELLI, Felice GIANGASPERO, Jacques GRILL, Christine HABERLER, Simon M L PAINE, Ian SCOTT, Thomas S JACQUES, Martin SILL, Stefan PFISTER, John-Paul KILDAY, Pierre LEBLOND, Maura MASSIMINO, Hendrik WITT, Piergiorgio MODENA, Pascale VARLET, Torsten PIETSCH, Richard G GRUNDY, Kristian W PAJTLER a Timothy A RITZMANN

Vydání

Neuro-Oncology, Cary, Oxford University Press, 2023, 1522-8517

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

30230 Other clinical medicine subjects

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 15.900 v roce 2022

Kód RIV

RIV/00216224:90249/23:00132051

Organizační jednotka

CZECRIN IV

UT WoS

000989756200001

Klíčová slova česky

brain tumors; biomarkers; Ependymoma; neuro-oncology; paediatric

Klíčová slova anglicky

brain tumors; biomarkers; Ependymoma; neuro-oncology; paediatric

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 12. 4. 2024 12:59, Mgr. Michal Petr

Anotace

V originále

Background Accurate identification of brain tumor molecular subgroups is increasingly important. We aimed to establish the most accurate and reproducible ependymoma subgroup biomarker detection techniques, across 147 cases from International Society of Pediatric Oncology (SIOP) Ependymoma II trial participants, enrolled in the pan-European "Biomarkers of Ependymoma in Children and Adolescents (BIOMECA)" study. Methods Across 6 European BIOMECA laboratories, we evaluated epigenetic profiling (DNA methylation array); immunohistochemistry (IHC) for nuclear p65-RELA, H3K27me3, and Tenascin-C; copy number analysis via fluorescent in situ hybridization (FISH) and MLPA (1q, CDKN2A), and MIP and DNA methylation array (genome-wide copy number evaluation); analysis of ZFTA- and YAP1-fusions by RT-PCR and sequencing, Nanostring and break-apart FISH. Results DNA Methylation profiling classified 65.3% (n = 96/147) of cases as EPN-PFA and 15% (n = 22/147) as ST-ZFTA fusion-positive. Immunohistochemical loss of H3K27me3 was a reproducible and accurate surrogate marker for EPN-PFA (sensitivity 99%-100% across 3 centers). IHC for p65-RELA, FISH, and RNA-based analyses effectively identified ZFTA- and YAP-fused supratentorial ependymomas. Detection of 1q gain using FISH exhibited only 57% inter-center concordance and low sensitivity and specificity while MIP, MLPA, and DNA methylation-based approaches demonstrated greater accuracy. Conclusions We confirm, in a prospective trial cohort, that H3K27me3 immunohistochemistry is a robust EPN-PFA biomarker. Tenascin-C should be abandoned as a PFA marker. DNA methylation and MIP arrays are effective tools for copy number analysis of 1q gain, 6q, and CDKN2A loss while FISH is inadequate. Fusion detection was successful, but rare novel fusions need more extensive technologies. Finally, we propose test sets to guide future diagnostic approaches.

Návaznosti

90249, velká výzkumná infrastruktura
Název: CZECRIN IV