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Functional precision medicine identifies new therapeutic candidates for medulloblastoma

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Homo sapiens

PROVIDER: GSE151345 | GEO | 2020/10/01

REPOSITORIES: GEO

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Functional Precision Medicine Identifies New Therapeutic Candidates for Medulloblastoma.

Project description: Not available

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Functional precision medicine identifies new therapeutic candidates for medulloblastoma (methylation dataset)

Project description:Medulloblastoma (MB) is among the most common malignant brain tumors in children. Recent studies have identified at least four subgroups of the disease that differ in terms of molecular characteristics and patient outcomes. Despite this heterogeneity, most MB patients receive similar therapies, including surgery, radiation and intensive chemotherapy. Although these treatments prolong survival, many patients still die from the disease, and survivors suffer severe long-term side effects from therapy. We hypothesize that each MB patient is sensitive to different therapies, and that tailoring therapy based on the molecular and cellular characteristics of patients’ tumors will improve outcomes. To test this, we have assembled a panel of orthotopic patient-derived xenografts (PDXs) and subjected them to DNA sequencing, gene expression profiling and high-throughput drug screening. Analysis of DNA sequencing suggests that most MBs do not have actionable mutations that point to effective therapies. In contrast, gene expression and drug response data provide valuable information about potential therapies for every tumor. For example, drug screening demonstrates that actinomycin D – which is used for treatment of sarcoma but rarely for MB – is active against PDXs representing Group 3 MB, the most aggressive form of the disease. Finally, we show that functional analysis of tumor cells can be used in a clinical setting to identify more treatment options than sequencing alone. These studies suggest that it should be possible to move away from a one-size-fits-all approach and begin to treat each patient with therapies that are effective against their tumor.

2020-10-01 | GSE151344 | GEO

Functional precision medicine identifies new therapeutic candidates for medulloblastoma (expression dataset)

2020-10-01 | GSE151343 | GEO