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Tyrosine kinase gene rearrangements in epithelial malignancies

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TLDR
The clinical outcomes with targeted therapies, aetiologic, pathogenic and clinical features that are associated with cancers harbouring oncogenic fusion kinases, including anaplastic lymphoma kinase (ALK), ROS1 and RET are examined.
Abstract
In this Review, the authors examine the aetiological, pathogenic and clinical features that are associated with cancers harbouring oncogenic fusion kinases, the clinical outcomes with targeted therapies, and strategies to discover additional kinases that are activated by chromosomal rearrangements in solid tumours. Chromosomal rearrangements that lead to oncogenic kinase activation are observed in many epithelial cancers. These cancers express activated fusion kinases that drive the initiation and progression of malignancy, and often have a considerable response to small-molecule kinase inhibitors, which validates these fusion kinases as 'druggable' targets. In this Review, we examine the aetiologic, pathogenic and clinical features that are associated with cancers harbouring oncogenic fusion kinases, including anaplastic lymphoma kinase (ALK), ROS1 and RET. We discuss the clinical outcomes with targeted therapies and explore strategies to discover additional kinases that are activated by chromosomal rearrangements in solid tumours.

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Non-small-cell lung cancers: a heterogeneous set of diseases

TL;DR: An impressive list of potential therapeutic targets was unveiled, drastically altering the clinical evaluation and treatment of patients for non-small-cell lung cancers, including immunotherapy.
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The emerging complexity of gene fusions in cancer

TL;DR: The spectrum of gene fusions in cancer and how the methods to identify them have evolved are described, and the conceptual implications of current, sequencing-based approaches for detection are discussed.
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Erratum: Non-small-cell lung cancers: a heterogeneous set of diseases

TL;DR: ADCs can be modelled by KrasG12D expression (long latency), KrasD expression and Trp53-null, and epidermal growth factor receptor (EGFR)T790M/L858R, among other genetic models, and they are thought to arise from more distal airway cells.
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The landscape and therapeutic relevance of cancer-associated transcript fusions.

TL;DR: The landscape of transcript fusions detected across a large number of tumor samples was described and revealed fusion events with clinical relevance that have not been previously recognized, support the concept of basket clinical trials and reveal an important role for tumorigenesis.
References
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Journal ArticleDOI

The RFG oligomerization domain mediates kinase activation and re-localization of the RET/PTC3 oncoprotein to the plasma membrane.

TL;DR: It is proposed that fusion to the RFG coiled-coil domain provides RET kinase with a scaffold that mediates oligomerization and re-localization of the RET/PTC3 protein, a process that may be crucial for the signalling of this specific RET/ PTC variant.
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Inhibition of heat shock protein 90, a novel RET/PTC1-associated protein, increases radioiodide accumulation in thyroid cells.

TL;DR: The findings suggest that 17-AAG may be useful as a chemotherapeutic agent, not only to inhibit proliferation but also to increase the efficacy of radioiodide therapy in patients with thyroid cancer.
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The dimerization mechanism of LIS1 and its implication for proteins containing the LisH motif.

TL;DR: It is found that dimerization is dependent on both the LisH motif and the residues downstream of it, including the first few turns of the helix, and that the coiled-coil does not contribute toDimerization, but instead is very labile and can adopt both supercoiled and helical conformations.
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PHASE II ACTIVITY OF THE HSP90 INHIBITOR AUY922 IN PATIENTS WITH ALK-REARRANGED (ALK plus ) OR EGFR-MUTATED ADVANCED NON-SMALL CELL LUNG CANCER (NSCLC)

TL;DR: AUY922 had an acceptable safety profile and clinical activity was seen in pts with ALK+ and EGFR-mut NSCLC, with partial responses in 6/21 (29%) pts and 7/35 (20%) pts, respectively, and response and PFS rates suggest further studies are warranted in these patient populations, particularly in EGfr-mut pts who progressed following treatment with TKIs.
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