H3.1 K36M mutation in a congenital-onset soft tissue neoplasm

Pediatric Blood & Cancer
Kristin D KernohanSarah L Sawyer

Abstract

We describe a patient who presented with a congenital soft tissue lesion initially diagnosed as infantile fibromatosis at 15 days of age. Unusually, the mass demonstrated malignant progression leading to death at 20 months of age. Biological progression to malignancy is not known to occur in fibromatosis, and fibrosarcoma is not known to progress from a benign lesion. Whole-exome sequencing of the tumor identified a driver mutation in histone H3.1 at lysine (K)36. Our findings support the link between oncohistones and infantile soft tissue tumors and provide additional evidence for the oncogenic effects of p.K36M in H3 variants.

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Citations

Feb 24, 2021·Proceedings of the National Academy of Sciences of the United States of America·Kartik N RajagopalanChao Lu

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