| 1. |
- Hettmer, Simone, et al.
(författare)
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Genetic testing and surveillance in infantile myofibromatosis : a report from the SIOPE Host Genome Working Group
- 2021
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Ingår i: Familial Cancer. - : Springer. - 1389-9600 .- 1573-7292. ; 20 SI:4, s. 327-336
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Tidskriftsartikel (refereegranskat)abstract
- Infantile myofibromatosis (IM), which is typically diagnosed in young children, comprises a wide clinical spectrum ranging from inconspicuous solitary soft tissue nodules to multiple disseminated tumors resulting in life-threatening complications. Familial IM follows an autosomal dominant mode of inheritance and is linked toPDGFRBgermline variants. SomaticPDGFRBvariants were also detected in solitary and multifocal IM lesions.PDGFRBvariants associated with IM constitutively activate PDGFRB kinase activity in the absence of its ligand. Germline variants have lower activating capabilities than somatic variants and, thus, require a second cis-acting hit for full receptor activation. Typically, these mutant receptors remain sensitive to tyrosine kinase inhibitors such as imatinib. The SIOPE Host Genome Working Group, consisting of pediatric oncologists, clinical geneticists and scientists, met in January 2020 to discuss recommendations for genetic testing and surveillance for patients who are diagnosed with IM or have a family history of IM/PDGFRBgermline variants. This report provides a brief review of the clinical manifestations and genetics of IM and summarizes our interdisciplinary recommendations.
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| 2. |
- Milosevic, Jelena, et al.
(författare)
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PPM1D is a neuroblastoma oncogene and therapeutic target in childhood neural tumors
- 2020
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Majority of cancers harbor alterations of the tumor suppressor TP53. However, childhood cancers, including unfavorable neuroblastoma, often lack TP53 mutations despite frequent loss of p53 function, suggesting alternative p53 inactivating mechanisms.Here we show that p53-regulating PPM1D at chromosome 17q22.3 is linked to aggressive tumors and poor prognosis in neuroblastoma. We identified that WIP1-phosphatase encoded by PPM1D, is activated by frequent segmental 17q-gain further accumulated during clonal evolution, gene-amplifications, gene-fusions or gain-of-function somatic and germline mutations. Pharmacological and genetic manipulation established WIP1 as a druggable target in neuroblastoma. Genome-scale CRISPR-Cas9 screening demonstrated PPM1D genetic dependency in TP53 wild-type neuroblastoma cell lines, and shRNA PPM1D knockdown significantly delayed in vivo tumor formation. Establishing a transgenic mouse model overexpressing PPM1D showed that these mice develop cancers phenotypically and genetically similar to tumors arising in mice with dysfunctional p53 when subjected to low-dose irradiation. Tumors include T-cell lymphomas harboring Notch1-mutations, Pten-deletions and p53-accumulation, adenocarcinomas and PHOX2B-expressing neuroblastomas establishing PPM1D as a bona fide oncogene in wtTP53 cancer and childhood neuroblastoma. Pharmacological inhibition of WIP1 suppressed the growth of neural tumors in nude mice proposing WIP1 as a therapeutic target in neural childhood tumors.
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| 3. |
- Piskur, Barbara, et al.
(författare)
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Parents actions, challenges, and needs while enabling participation of children with a physical disability: a scoping review
- 2012
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Ingår i: BMC Pediatrics. - : BioMed Central. - 1471-2431. ; 12:177
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Forskningsöversikt (refereegranskat)abstract
- Background: Pediatric rehabilitation considers Family-centered service (FCS) as a way to increase participation of children with a physical disability in daily life. An important principal is that parents greatly contribute to their childs participation at school, at home, and in the community. However, it is unclear what kind of information is available from literature about what parents actually do to support their childs participation and what problems and needs they experience? Hence, the aim of this study was to provide an overview of the actions, challenges, and needs of parents in enabling participation of their child with a physical disability that is neurological and non-progressive in nature. less thanbrgreater than less thanbrgreater thanMethods: Scoping review with extensive literature search (September 2011) and a thematic analysis to synthesize findings. less thanbrgreater than less thanbrgreater thanResults: Fourteen relevant articles revealed two major themes: parents enable and support performance of meaningful activities and parents enable, change and use the environment. Each theme holds a number of actions (e. g. choosing the right type of meaningful activities for facilitating social contacts) and challenges (e. g. negative attitudes of other people). Less information is available about the needs of parents. less thanbrgreater than less thanbrgreater thanConclusions: This study indicates that parents apply a broad range of strategies to support participation of their children. They experience many challenges, especially as a result of constraints in the social and physical environments. However, this review also shows that little is known about needs of parents in facilitating participation. As Family-centered service (FCS) philosophy is all about the needs of the child and the family, it is essential to further investigate the needs of the parents and to understand if and to what extent they wish to be supported in enabling their childs participation in daily life.
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