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    1. Spatial and temporal homogeneity of driver mutations in diffuse intrinsic pontine glioma

      [Paper-level Aggregated] PMCID: PMC4823825

      Evidence Type(s): Oncogenic, Functional, Predictive

      Justification: Oncogenic: The K27M mutation in histone 3 and the H1047R mutation in PIK3CA are described as oncogenic alterations associated with high-grade gliomas, indicating their role in tumorigenesis. Functional: The H1047R mutation in PIK3CA affects the catalytic domain and is linked to pathways involved in angiogenesis, suggesting a functional impact on tumor growth and survival. Predictive: The presence of specific mutations, such as K27M and H1047R, may guide the development of targeted therapies, indicating their predictive value for treatment strategies in DIPG.

      Gene→Variant (gene-first): PIK3CA(5290):H1047R H3C2(8358):K27M

      Genes: PIK3CA(5290) H3C2(8358)

      Variants: H1047R K27M

    2. In addition to the main driver mutations discussed above, several patients carry recurrent mutations that are clearly subclonal (present in some but not all tumour areas in a patient) and occur at later stages of tumour

      [Paragraph-level] PMCID: PMC4823825 Section: RESULTS PassageIndex: 12

      Evidence Type(s): Oncogenic, Functional

      Justification: Oncogenic: The passage indicates that the PIK3CA H1047R mutation contributes to tumor development and progression, as it is associated with high-grade astrocytoma (WHO IV) and is linked to localized survival and growth advantages in tumor areas where it is acquired. Functional: The H1047R mutation affects the catalytic domain of PIK3CA, suggesting that it alters the molecular function of the protein, which is further supported by the mention of its role in PI3K activation and associated pathways.

      Gene→Variant (gene-first): 5290:H1047R

      Genes: 5290

      Variants: H1047R

    3. We analysed 134 punch cores from nine DIPG whole brain specimens obtained at autopsy as previously described. Selected punch cores represented multiple spatial regions of the primary tumour and adjacent areas within the

      [Paragraph-level] PMCID: PMC4823825 Section: RESULTS PassageIndex: 3

      Evidence Type(s): Oncogenic

      Justification: Oncogenic: The K27M mutation is described as an oncogenic mutation associated with high-grade gliomas (HGG) and is present in a majority of the analyzed DIPG samples, indicating its contribution to tumor development or progression.

      Gene→Variant (gene-first): 8358:K27M

      Genes: 8358

      Variants: K27M

    4. Diffuse Intrinsic Pontine Gliomas (DIPGs) are deadly paediatric brain tumours where needle biopsies help guide diagnosis and targeted therapies. To address spatial heterogeneity, here we analyse 134 specimens from variou

      [Paragraph-level] PMCID: PMC4823825 Section: ABSTRACT PassageIndex: 1

      Evidence Type(s): Oncogenic, Diagnostic

      Justification: Oncogenic: The passage discusses how the K27M mutation contributes to tumorigenesis in DIPGs, indicating its role in tumor development and progression. Diagnostic: The K27M mutation is associated with the diagnosis of DIPGs, as it helps guide diagnosis and targeted therapies in these tumors.

      Gene→Variant (gene-first): 8358:K27M

      Genes: 8358

      Variants: K27M

    5. In addition to the main driver mutations discussed above, several patients carry recurrent mutations that are clearly subclonal (present in some but not all tumour areas in a patient) and occur at later stages of tumour

      [Paragraph-level] PMCID: PMC4823825 Section: RESULTS PassageIndex: 12

      Evidence Type(s): Oncogenic, Functional

      Justification: Oncogenic: The passage indicates that the PIK3CA H1047R mutation contributes to tumor development and progression, as it is associated with high-grade astrocytoma (WHO IV) and is linked to localized survival and growth advantages in tumor areas where it is acquired. Functional: The H1047R mutation affects the catalytic domain of PIK3CA, suggesting that it alters the molecular function of the protein, which is further supported by the mention of its role in PI3K activation and associated pathways.

      Gene→Variant (gene-first): 5290:H1047R

      Genes: 5290

      Variants: H1047R

    6. We analysed 134 punch cores from nine DIPG whole brain specimens obtained at autopsy as previously described. Selected punch cores represented multiple spatial regions of the primary tumour and adjacent areas within the

      [Paragraph-level] PMCID: PMC4823825 Section: RESULTS PassageIndex: 3

      Evidence Type(s): Oncogenic

      Justification: Oncogenic: The K27M mutation is described as an oncogenic mutation associated with high-grade gliomas (HGG) and is present in a majority of the analyzed DIPG samples, indicating its contribution to tumor development or progression.

      Gene→Variant (gene-first): 8358:K27M

      Genes: 8358

      Variants: K27M

    7. Diffuse Intrinsic Pontine Gliomas (DIPGs) are deadly paediatric brain tumours where needle biopsies help guide diagnosis and targeted therapies. To address spatial heterogeneity, here we analyse 134 specimens from variou

      [Paragraph-level] PMCID: PMC4823825 Section: ABSTRACT PassageIndex: 1

      Evidence Type(s): Oncogenic, Diagnostic

      Justification: Oncogenic: The passage discusses how the K27M mutation contributes to tumorigenesis in DIPGs, indicating its role in tumor development and progression. Diagnostic: The K27M mutation is associated with the diagnosis of DIPGs, as it helps guide diagnosis and targeted therapies in these tumors.

      Gene→Variant (gene-first): 8358:K27M

      Genes: 8358

      Variants: K27M