ArticleDiagnostic pathology2021
Assessment of H3K27me3 immunohistochemistry and combination of NF1 and p16 deletions by fluorescence in situ hybridization in the differential diagnosis of malignant peripheral nerve sheath tumor and its histological mimics.
Article in Diagnostic pathology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed, 10 citations in OpenAlex.
- Giant cervicothoracic malignant peripheral nerve sheath tumor in neurofibromatosis type 1: a case report of multidisciplinary management and literature review.Frontiers in oncology · 2026Article
- Giant cervicothoracic malignant peripheral nerve sheath tumor in neurofibromatosis type I: a case report of integrated management with multimodal guidance.Frontiers in surgery · 2026Article
- Primary undifferentiated pleomorphic sarcoma of the stomach mimicking a gastrointestinal stromal tumor: a case report and literature review.Frontiers in oncology · 2026Article
- Epigenetic Regulation of Aging and its Rejuvenation.MedComm · 2025Review
- Clinicopathological differences between classical schwannomas and cellular schwannomas in the retroperitoneum.Journal of neuropathology and experimental neurology · 2024Article
- H3K27me3 Loss in Central Nervous System Tumors: Diagnostic, Prognostic, and Therapeutic Implications.Cancers · 2024Review
- Current state of spinal nerve sheath tumor management and future advances.Neuro-oncology advances · 2024Review
- Contemporary Approach to Neurofibromatosis Type 1-Associated Malignant Peripheral Nerve Sheath Tumors.American Society of Clinical Oncology educational book. American Society of Clinical Oncology. Annual Meeting · 2024Review
- Article
- Comparison study of clinicopathological features of cellular schwannoma between retroperitoneum and other sites.Annals of translational medicine · 2022Article
- Loss of H3K27me3 expression in canine nerve sheath tumors.Frontiers in veterinary science · 2022Article
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10 authors at 1 institution in 1 country.
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Abstract
backgroundA definitive diagnosis of malignant peripheral nerve sheath tumor (MPNST) is challenging, especially in cases without neurofibromatosis 1 (NF1), because MPNST lacks specific markers on immunohistochemistry (IHC).
methodsWe performed IHC for histone 3 trimethylated on lysine 27 (H3K27me3) and evaluated the percentage of cells with H3K27me3 loss using measured values at 10% intervals, categorized as complete loss (100% of tumor cells lost staining), partial loss (10% to 90% of tumor cells lost staining), and intact (no tumor cells lost staining). We conducted fluorescence in situ hybridization (FISH) for NF1 and p16 deletions comparing 55 MPNSTs and 35 non-MPNSTs, consisting of 9 synovial sarcomas (SSs), 8 leiomyosarcomas (LMSs), 10 myxofibrosarcomas (MFSs), and 8 undifferentiated pleomorphic sarcomas (UPSs). We assessed the percentage of cells with homozygous and heterozygous deletions and defined "deletion" if the percentage of either the NF1 or p16 deletion signals was greater than 50% of tumor cells.
resultsAmong the 55 MPNSTs, 23 (42%) showed complete H3K27me3 loss and 32 (58%) exhibited partial loss or intact. One each of the 9 SSs (11%), 8 LMSs (12%), and 8 UPSs (12%) showed complete H3K27me3 loss and many non-MPNSTs exhibited intact or partial H3K27me3 loss. Among the 55 MPNSTs, 33 (60%) and 44 (80%) showed NF1 or p16 deletion, respectively. Co-deletion of NF1 and p16 was observed in 29 (53%) MPNSTs. Among the 23 MPNTSs showing H3K27me3 complete loss, 18 (78%) and 20 (87%) exhibited NF1 or p16 deletion, respectively. Among the 32 MPNSTs with H3K27me3 partial loss or intact, 15 (47%) and 24 (75%) exhibited NF1 or p16 deletion, respectively. The frequency of NF1 and/or p16 deletion tended to be lower in non-MPNSTs than in MPNSTs. Approximately 90% of MPNSTs included cases with H3K27me3 complete loss and cases showing H3K27me3 partial loss or intact with NF1 and/or p16 deletion. Approximately 50% of MPNSTs showed co-deletion of NF1 and p16 regardless of H3K27me3 loss.
conclusionsFISH for NF1 and p16 deletions, frequently observed in high-grade MPNSTs, might be a useful ancillary diagnostic tool for differentiating MPNST from other mimicking spindle cell and pleomorphic sarcomas.
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