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CEP72-ROS1 is a novel ROS1 fusion variant in non-small cell lung cancer (NSCLC) discovered by next-generation sequencing and could be included in ROS1 detection assay, such as reverse transcription PCR.
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The upstream breakpoint lies in the same region as the breakpoint of a fused gene SLC34A2-ROS1, which encodes a constitutive kinase in the lung cancer cell line HCC78 and nonsmall-cell lung cancer (NSCLC), suggesting that the deletion in this family is a hot spot for recombination, not only in cancer samples with somatic mutation, but also in PAM patients with germline genetic defects of SLC34A2.
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Although rare, patients with ovarian serous carcinoma or serous borderline tumor may exhibit ROS1 gene rearrangement and ROS1 protein expression
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Study based on 47 tissue samples from spitzoid tumors revealed 2 BAP1-inactived cases. The absence of anomalous expression of translocation-related proteins ALK and ROS1 in this series, composed predominantly of low-grade/low-risk tumors, indicates that translocated spitzoid lesions may not be as prevalent as initially suggested, at least in some populations.
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None of the genitourinary pseudosarcomatous myofibroblastic proliferations was found to harbour USP6 (0/12), ROS1 (0/8) or ETV6 (0/7) rearrangements
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the results from three transcriptome-based platforms (Nanostring Elements, Agena LungFusion panel and ThermoFisher NGS fusion panel) were compared to those obtained from ALK, ROS1 and RET Fluorescence In Situ Hybridization on 51 clinical specimens.
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lung adenocarcinoma in Asian patients aged =50 years had a higher gene mutation rate than in those aged >50 years, especially EML4-ALK and ROS1 fusion. Mutation analysis may be helpful in determining targeted therapy for the majority of these patients
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The frequencies of ALK, ROS1 and RET rearrangements are low in non-adenocarcinoma NSCLC patients. And their clinical characteristics are similar to those in lung adenocarcinoma. Fusions of the above 3 genes are not prognostic factor for non-adnocarcinoma NSCLC patients.
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Compared with ROS1-negative advanced NSCLCs,ROS1-rearranged advanced NSCLCs were associated with a younger age at presentation. ROS1 rearrangements were not significantly associated with sex, smoking history, drinking history and metastatic sites.
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ROS1 rearrangement was detected in 1.1% of CCA patients. Although rare, conduct of clinical trials using ROS1 inhibitors in these genetically unique patients is warranted.
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For intra-hepatic cholangiocarcinomas (IHCC)patients, ROS1, ALK and c-MET expression levels have prognostic significance on clinical outcomes. Although this finding may require further validation, it has led to proposal of a new stratification or enriched biomarker for future phase III trial of anti-EGFR therapy in IHCC
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Polymorphisms rs1333049 and rs10757278 are associated with SCD in men and rs499818 in the women aged over 50 years.
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Overcome crizotinib resistance in a ROS1-rearranged cancer.
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The ROS1 S1986Y/F and ALK C1156Y mutations are homologous and displayed similar sensitivity patterns to ALK/ROS1 TKIs.
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Given the results from the ROS1 cohort of the clinical trial PROFILE 1001, crizotinib represents a new treatment option and the first approved therapy for patients with metastatic non-small cell lung cancer whose tumors are ROS1 positive. Crizotinib demonstrated efficacy irrespective of prior treatment status.
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ROS1 rearrangements rarely overlap with alterations in EGFR, KRAS, ALK, or other targetable oncogenes in NSCLC.
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Durable benefits with pemetrexed-based therapies in RET-rearranged lung cancers are comparable with ALK- and ROS1-rearranged lung cancers. When selecting therapies for patients with RET-rearranged lung cancers, pemetrexed-containing regimens should be considered.
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C-ROS-1 is involved in Bone marrow-derived mesenchymal stem/stromal cell fate switching between osteogenesis and adipogenesis, mediated via PI3K/AKT/mTORC1 signalling.
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Findings highlight ROS1 as a candidate biomarker and therapeutic target for oral squamous cell carcinoma.
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Studies suggest that the routine clinical use of fluorescence in situ hybridization (FISH) and immunocytochemistry (ICC) may be replaced by emerging next-generation sequencing and digital, color-coded barcode technologies, which have the advantage of simultaneously evaluating anaplastic lymphoma kinase (ALK) and c-ros oncogene 1 (ROS1) and epidermal growth factor receptor (EGFR) alterations in a single analysis.