In the context of retained 1p and 19q arms, this lack of CnLOH is highly significant in this case because the literature shows oligosarcoma may demonstrate CnLOH of 1p/19q due to reduplication of the these chromosomal arms.
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Sarcomatous transformation of IDH-mutant astrocytoma matching to methylation class oligosarcoma following embolization, a case report.
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