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Report for Clinical Trial NCT02960230

Developed by Shray Alag, 2020.
SNP Clinical Trial Gene

H3.3K27M Specific Peptide Vaccine Combined With Poly-ICLC for the Treatment of Newly Diagnosed HLA-A2+ H3.3K27M Positive Diffuse Intrinsic Pontine Glioma (DIPG) as Well as Other Newly Diagnosed HLA-A2+ H3.3K27M Positive Gliomas

This is a two cohort Phase I study within the Pacific Pediatric Neuro-Oncology Consortium (PNOC). This study will assess the safety of repeated administration of the H3.3K27M specific vaccine in HLA-A2+ children and young adults with H3.3K27M DIPGs and other gliomas.

NCT02960230 Diffuse Intrinsic Pontine Glioma Glioma
MeSH: Glioma
HPO: Glioma

1 Interventions

Name: K27M peptide

Description: K27M peptide vaccine, combined with Tetanus Toxoid peptide, emulsified in montanide. Poly-ICLC will be given concurrently

Type: Biological

Newly Diagnosed DIPG Newly Diagnosed Glioma (non-DIPG)


Primary Outcomes

Description: Safety of the vaccine will be assessed by monitoring for adverse events (AEs), scheduled laboratory assessments, vital signs, & physical examinations for subjects who receive the vaccination. The severity of toxicities will be graded according to the NCI CTCAE v4.0. AEs & clinically significant lab abnormalities (meeting Grade 3, 4, or 5 criteria according to CTCAE) will be summarized by maximum intensity & relationship to study drug(s). Grade 1 & 2 AEs will be summarized if related to study therapy. Descriptive statistics will be utilized to display the data on toxicity seen.

Measure: Number of Participants with Adverse Events related to treatment

Time: 24 months

Description: OS12 will be the clinical efficacy primary endpoint. Any eligible subject that receives at least one dose of the K27M/TT vaccine will be considered evaluable for clinical efficacy. For subjects who are still alive at 12 months, OS12 will be censored at the last contact date. OS will be estimated using the Kaplan-Meier method.

Measure: Overall survival (OS) at 12 months (OS12)

Time: 36 months

Secondary Outcomes

Description: A subject will be considered to have responded, if at any of post-vaccine time point against H3.3K27M antigen, the number of spots is double that at baseline, and there are at least 10 spots/20,000 cells, and if the number of the post-vaccine spots is at least three times the standard-deviation of the pre-vaccine value. This definition provides some protection against false positive response. We will correlate response with OS data. We will plot the time course of the magnitude of response and model it using a mixed-effects model approach.

Measure: Induction of the H3.3K27M epitope-specific cytotoxic T lymphocyte (CTL) response in post vaccine peripheral mononuclear cells (PBMC) in HLA-A2+ children with DIPG and other gliomas

Time: 36 months

Other Outcomes

Description: In subjects with evidence of progression that will undergo tissue collection as part of their standard of care, the tumor tissue will be analyzed for H3.3K27M expression status and infiltration of H3.3K27M specific T cells.

Measure: Assess H3.3K27M expression status and infiltration of H3.3K27M specific T cells

Time: 36 months

Description: Archived tumor and normal DNA from each subject at time of initial diagnosis along with serial blood draw following therapy will be used for later studies to determine whether circulating tumor DNA (ctDNA) sequences in the subject's blood serve as biomarkers of tumor burden, response to therapy, or development of drug resistance.

Measure: Analyze circulating tumor DNA

Time: 36 months

Purpose: Treatment

Allocation: Non-Randomized

Parallel Assignment


There is one SNP

SNPs


1 K27M

Any eligible subject that receives at least one dose of the K27M/TT vaccine will be considered evaluable for clinical efficacy. --- K27M ---



HPO Nodes


HPO:
Glioma
Genes 50
TSC2 GLI3 BRCA2 TSC1 LRP5 MLH1 PMS2 APC IDH1 MSH6 POT1 TSC2 CDKN2A NF2 MSH3 MSH6 APC NF1 EPCAM TSC1 TGFBR2 SEMA4A IDH1 IDH2 FAN1 APC MSH3 BMPR1A KRAS MLH1 MSH2 C11ORF95 PMS2 MLH3 PIK3CA NBN RELA SETBP1 IFNG RPS20 NF1 PMS1 CHEK2 APC TP53 MSH2 NBN ERBB2 APC NF2