ACTION: a randomized phase 3 study of ONC201 (dordaviprone) in patients with newly diagnosed H3 K27M-mutant diffuse glioma.

Background: H3 K27M-mutant diffuse glioma primarily affects children and young adults, is associated with a poor prognosis, and no effective systemic therapy is currently available. ONC201 (dordaviprone) has previously demonstrated efficacy in patients with recurrent disease. This phase 3 trial evaluates ONC201 in patients with newly diagnosed H3 K27M-mutant glioma.

ONC201 (Dordaviprone) in Recurrent H3 K27M-Mutant Diffuse Midline Glioma.

Purpose: Histone 3 (H3) K27M-mutant diffuse midline glioma (DMG) has a dismal prognosis with no established effective therapy beyond radiation. This integrated analysis evaluated single-agent ONC201 (dordaviprone), a first-in-class imipridone, in recurrent H3 K27M-mutant DMG.

Methods: Fifty patients (pediatric, n = 4; adult, n = 46) with recurrent H3 K27M-mutant DMG who received oral ONC201 monotherapy in four clinical trials or one expanded access protocol were included.

Immunohistochemistry Detection of Histone H3 K27M Mutation in Human Glioma Tissue.

The presence of the histone 3 (H3) K27M mutation in diffuse midline glioma has implications for diagnosis, prognosis, and treatment, making rapid and accurate H3 K27M characterization vital for optimal treatment. This study evaluated an immunohistochemical assay using a commercially available monoclonal anti-H3 K27M in human central nervous system tumors. H3 K27M-positive glioma specimens were obtained from clinical sites with prior H3 K27M testing using local methods; negative control glioblastoma tissue was obtained from a tissue library.

Toggling Calcium Plating Activity and Reversibility through Modulation of Ca Speciation in Borohydride-based Electrolytes.

Learning how to tailor Ca speciation and electroactivity is of central importance to engineer next-generation battery electrolytes. Using an exemplar dual-salt electrolyte, Ca(BH) + Ca(TFSI) in THF, this work examines how to modulate a critical parameter proposed to govern electroactivity, the BH /Ca ratio. Introduction of a more-dissociating source of Ca via Ca(TFSI) drives re-speciation of strongly ion-paired Ca(BH), confirmed by ionic conductivity, Raman spectroscopy, and reaction microcalorimetry measurements, generating larger populations of charged species and enhancing plating currents.