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Acknowledgements
The authors would like to thank the following associations: ARSLA, CSC, France DFT, Fondation ARSEP, Fondation Vaincre Alzheimer, France Parkinson. The Neuro-CEB Neuropathology network includes: Dr. Franck Letournel (CHU Angers), Dr. Marie-Laure Martin-Négrier (CHU Bordeaux), Dr. Maxime Faisant (CHU Caen), Pr. Catherine Godfraind (CHU Clermont-Ferrand), Pr. Claude-Alain Maurage (CHU Lille), Dr. Vincent Deramecourt (CHU Lille), Dr. Mathilde Duchesne (CHU Limoges), Dr. David Meyronnet (CHU Lyon), Dr. Clémence Delteil (CHU Marseille), Pr. Valérie Rigau (CHU Montpellier), Dr. Fanny Vandenbos-Burel (Nice), Pr. Danielle Seilhean (CHU PS, Paris), Dr. Susana Boluda (CHU PS, Paris), Dr. Isabelle Plu (CHU PS, Paris), Dr. Dan Christian Chiforeanu (CHU Rennes), Dr. Florent Marguet (CHU Rouen), and Dr. Béatrice Lannes (CHU Strasbourg).
Funding
This work was supported by a grant from the Fondation de l’Avenir to Matthieu Peyre (Project No. AP-RM-21015).
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Supplementary Information
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Supplementary Table 3: Table of the 30 variants remaining after variant calling and exclusion of non-functionally significant variants. Algorithms: MT: Mutect2; LF: Samtools1-10 mpileup; ST: Strelka 2.9.10 (see Supplementary methods). (XLSX 14 kb)
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Supplementary Table 4: Table of the results of the sequencing on the main hotspots in meningioma-driver genes. (XLSX 38 kb)
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Supplementary Fig. 1. Histological analysis of arachnoid (a, b, c) and dura mater (d, e, f) samples. Whole samples for arachnoid and dura mater are displayed in a. and b. respectively (scale bars 2 mm), revealing the global architecture of each tissue. Arachnoid tissue presented a majority of areas with typical meningothelial architecture (b., scale bar 100 μm) but also several blood vessels (asterisks in c., scale bar 100 μm). Dura mater samples presented with typical collagen fibers (e. scale bar 100 μm) but occasionally displayed small inclusions of arachnoid cells with round nuclei and clear cytoplasm (black arrow heads in f., scale bar 100 μm). (TIFF 33631 kb)
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Supplementary Fig. 2. NF2 and TRAF7 mutations in normal meninges detected by ddPCR. Two dimensional ddPCR plots of TRAF7-mutant meningeal samples and meningioma controls. The wild type and mutant droplets for each mutation are displayed on the X and Y axis, respectively. For each sample, the number of mutant and wild type droplets are indicated at the top left and bottom right corners, respectively. (TIFF 35160 kb)
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Boetto, J., Plu, I., Ducos, Y. et al. Normal meninges harbor oncogenic somatic mutations in meningioma-driver genes. Acta Neuropathol 146, 833–835 (2023). https://doi.org/10.1007/s00401-023-02635-4
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DOI: https://doi.org/10.1007/s00401-023-02635-4