The primacy of NF1 loss as the driver of tumorigenesis in neurofibromatosis type 1-associated plexiform neurofibromas

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The UCSC Known Genes.

Fan Hsu, W. Kent, Hiram Clawson … (2006)

The University of California Santa Cruz (UCSC) Known Genes dataset is constructed by a fully automated process, based on protein data from Swiss-Prot/TrEMBL (UniProt) and the associated mRNA data from Genbank. The detailed steps of this process are described. Extensive cross-references from this dataset to other genomic and proteomic data were constructed. For each known gene, a details page is provided containing rich information about the gene, together with extensive links to other relevant genomic, proteomic and pathway data. As of July 2005, the UCSC Known Genes are available for human, mouse and rat genomes. The Known Genes serves as a foundation to support several key programs: the Genome Browser, Proteome Browser, Gene Sorter and Table Browser offered at the UCSC website. All the associated data files and program source code are also available. They can be accessed at http://genome.ucsc.edu. The genomic coverage of UCSC Known Genes, RefSeq, Ensembl Genes, H-Invitational and CCDS is analyzed. Although UCSC Known Genes offers the highest genomic and CDS coverage among major human and mouse gene sets, more detailed analysis suggests all of them could be further improved.

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PRC2 is recurrently inactivated through EED or SUZ12 loss in malignant peripheral nerve sheath tumors

William Lee, Sewit Teckie, Thomas Wiesner … (2014)

Malignant Peripheral Nerve Sheath Tumors (MPNSTs) represent a group of highly aggressive soft tissue sarcomas that may occur sporadically, in association with neurofibromatosis type I (NF1-), or after radiotherapy 1–3 . Using comprehensive genomic approaches, we identified loss-of-function (LOF) somatic alterations of the Polycomb repressive complex 2 (PRC2) core components, EED or SUZ12, in 92% of sporadic, 70% of NF1-associated and 90% of radiotherapy-associated MPNSTs. MPNSTs with PRC2 loss showed complete loss of H3K27me3 and aberrant transcriptional activation of multiple PRC2-repressed homeobox master regulators and their regulated developmental pathways. Introduction of the PRC2 component in a PRC2-deficient MPNST cell line restored H3K27me3 and decreased cell growth. Additionally, we identified frequent somatic alterations of CDKN2A (81% of all MPNSTs) and NF1 (72% of non-NF1-associated MPNSTs), and they significantly co-occur with PRC2 alterations. The highly recurrent and specific inactivation of PRC2, NF1, CDKN2A posits their critical and potentially cooperative roles in MPNST pathogenesis.

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Loss-of-function mutations in FGFR1 cause autosomal dominant Kallmann syndrome.

Henriette de Waal, R M Saura, Catherine Dodé … (2003)

We took advantage of overlapping interstitial deletions at chromosome 8p11-p12 in two individuals with contiguous gene syndromes and defined an interval of roughly 540 kb associated with a dominant form of Kallmann syndrome, KAL2. We establish here that loss-of-function mutations in FGFR1 underlie KAL2 whereas a gain-of-function mutation in FGFR1 has been shown to cause a form of craniosynostosis. Moreover, we suggest that the KAL1 gene product, the extracellular matrix protein anosmin-1, is involved in FGF signaling and propose that the gender difference in anosmin-1 dosage (because KAL1 partially escapes X inactivation) explains the higher prevalence of the disease in males.