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Molecular analysis of inflammatory myofibroblastic tumor (WGS and WES)

ABSTRACT: The clinical phase 2 trial EORTC 90101 Ã¢Â€ÂœCREATEÃ¢Â€Â showed high anti-tumor activity of crizotinib, the inhibitor of anaplastic lymphoma kinase (ALK)/ROS1, in patients with advanced inflammatory myofibroblastic tumor (IMFT). These findings suggested also that molecular targets beyond ALK/ROS1 contribute to the sensitivity to this kinase inhibitor. We therefore performed an in-depth molecular characterization of archival IMFT tissue, collected from patients enrolled in this trial, with the aim to identify other molecular alterations which could play a role in the response to crizotinib.

PROVIDER: EGAS00001005081 | EGA |

REPOSITORIES: EGA

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Molecular profile of IMFT for the identification of potential druggable targets and biomarkers predicting crizotinib response.

Project description:The clinical phase II trial EORTC 90101 Ã¢Â€ÂœCREATEÃ¢Â€Â showed high anti-tumor activity of crizotinib, an ALK/ROS1 inhibitor, in IMFT patients. However, results suggested that other molecular targets in addition to ALK/ROS1 might also contribute to the sensitivity of this kinase inhibitor. We therefore characterized molecular profile of IMFT to identify alterations which could play a role in the response to crizotinib.

| EGAS00001005419 | EGA

Mig6 mediates adaptive and acquired resistance to ALK and ROS1 fusion kinase inhibition through feedback activation of EGFR: H3122

Project description:ALK and ROS1 fusions defines subsets of lung adenocarcinoma. Although ALK/ROS1 inhibitors improved therapeutic outcome of patients harboring those oncogenic fusions, complete responses were rare, and resistance eventually develops from the residual tumor. To under the mechanisms contributing to residual tumor formation, we performed phosphoproteomics to explore the signaling adaption shortly after ALK/ROS1 inhibition. We found the phosphorylation of Mig6, a potent inhibitor for EGFR, was decreased following ALK/ROS1 inhibition, impairing Mig6 binding and inhibition on EGFR. Furthermore, Mig6 mRNA and protein levels were decreased rapidly by ALK/ROS1 inhibitors, potentiating EGFR activity to support cell survival. We also uncovered a novel mechanism mediated by Mig6 to regulate EGFR activity without impacting EGFR phosphorylation, but rather altering signaling adaptor SHC1 binding to EGFR. Mig6 expression was also lost following long-term exposure to ALK/ROS1 inhibitors to support EGFR-mediated acquired resistance. Finally, a Mig6 EGFR-binding domain truncation mutation was identified in a patient-derived ROS1 cell line, rendering its resistance to ROS1 inhibitors but sensitivity to HER family inhibitors. Our work established a rationale to evaluate combinations of ALK/ROS1 and EGFR inhibitors to limit residual tumor formation, therefore preventing or delaying subsequent resistance emergence.

2023-09-12 | PXD036772 | Pride

Mig6 mediates adaptive and acquired resistance to ALK and ROS1 fusion kinase inhibition through feedback activation of EGFR: Cuto28

2023-09-12 | PXD036771 | Pride

Alteration of treatment of the ALK inhibitor in ALK-amplified neuroblastoma

Project description:Anaplastic Lymphoma Kinase (ALK) most frequently mutated in neuroblastoma (NB) and is atractive molecular target for therapy. However, efficacy of the ALK inhibitor against ALK-amplified NB is unclear. To elucidate genetic alterations induced by treatment of the ALK inhibitor, we compared expression profile between ALK inhibitor-treated and DMSO-treated NB39nu cells using Agilent SurePrint G3 Human GE 8x60K V2 Microarray Kit

2017-11-28 | GSE107354 | GEO

Proteomic analysis of tyrosine phosphorylation induced by oncogenic kinase fusions identified in lung adenocarcinoma

Project description:Kinase fusions are considered oncogenic drivers in numerous types of cancer. In lung adenocarcinoma 5-10% of patients harbor kinase fusions. The most frequently detected kinase fusion involves the Anaplastic Lymphoma Kinase (ALK) and Echinoderm Microtubule-associated protein-Like 4 (EML4). In addition, oncogenic kinase fusions involving the tyrosine kinases RET and ROS1 are found in smaller subsets of patients. In this study, we employed quantitative mass spectrometry-based phosphoproteomics to define the cellular tyrosine phosphorylation patterns induced by different oncogenic kinase fusions identified in patients with lung adenocarcinoma. We show that the cellular expression of the kinase fusions leads to widespread tyrosine phosphorylation. Direct comparison of different kinase fusions demonstrates that the kinase part and not the fusion partner primarily defines the phosphorylation pattern. The tyrosine phosphorylation patterns differed between ALK, ROS1 and RET fusions, suggesting that oncogenic signaling induced by these kinases involves the modulation of different cellular processes.

2021-04-27 | PXD021904 | Pride

Activity of afatinib in a window pre-operative EORTC study in patients with squamous cell carcinoma of the head and neck (HNSCC)

Project description:Afatinib is a pan-HER inhibitor that improved progression-free-survival (PFS) in recurrent HNSCC versus methotrexate: median PFS 2.6 versus 1.7 months (LUX H&N 1 trial). This study is a translational research linked to EORTC 90111 afatinib trial, an open-label, randomized, multicenter, phase II window of opportunity trial. Treatment-naïve HNSCC patients selected for primary curative surgery were randomized (5:1 ratio) to receive Afatinib during 14 days (day -15 until day -1) before surgery (day 0) or no treatment. Tumour biopsies, FDG/PET, and MRI were performed at diagnosis and at surgery. The primary end point was metabolic FDG-PET/CT response, defined according to EORTC guidelines.

2019-01-23 | GSE101491 | GEO

Transcription profiling of human inflammatory breast carcinoma tumors (luminal, basal and apocrine)

Project description:EORTC 10994 is a phase III clinical trial comparing FEC with ET in patients with large operable, locally advanced or inflammatory breast cancer (www.eortc.be). Frozen biopsies were taken at randomisation. RNA was extracted from 100um thickness of 14G core needle biopsies. Adjacent sections were tested by H&E to confirm >20% tumour cell content. 100 ng total RNA per chip were amplified using the Affymetrix small sample protocol (IVT then Enzo). 49 tumours were tested on Affymetrix U133A chips. The CEL files were quantile normalised together using rma. Clinical response data are not available yet. See doi:10.1038/sj.onc.1208561 Farmer et al "Identification of molecular apocrine breast tumours by microarray analysis

2007-08-14 | E-GEOD-1561 | biostudies-arrayexpress

Homo sapiens

Project description:EORTC 10994 clinical trial

| PRJNA90875 | ENA

nCounter analysis of patients progressed to TKIs

Project description:A prevalence study was conducted for MET amplification and overexpression in liquid biopsy samples from patients with NSCLC who relapsed on ALK, ROS1 or RET tyrosine kinase inhibitors. MET-mediated resistance was detected in 37.5% of tissue biopsies, which allow the detection of MET overexpression, compared to 7.4% of liquid biopsies. This study highlights the importance of considering MET overexpression as a resistance driver to fusion targeted therapies

2023-06-22 | GSE235432 | GEO

Identification of anaplastic lymphoma kinase as a candidate of new therapeutic target for BCC

Project description:Background; Basal cell carcinoma (BCC) is the most common cancer in humans. The pathogenesis of BCC is associated with the sonic hedgehog (SHH) signaling pathway. Vismodegib, a smoothened inhibitor, that targets this pathway is now in clinical use for advanced BCC patients, but its efficacy is limited. Therefore, new therapeutic options for this cancer are required. Methods; We studied gene expression profiling of BCC tumour tissue coupled with laser capture microdissection to identify tumor specific receptor tyrosine kinase expression that can be targeted by small molecule inhibitors. The expression of selected molecules was confirmed by quantitative RT-PCR (qRT-PCR) and by immunohistochemistry. The action of kinase inhibitors was examined on primary normal human epidermal keratinocytes. Results; We found a >250 fold change increase (false discovery rate <10-4) of the oncogene, anaplastic lymphoma kinase (ALK) as well as its ligands, pleiotrophin and midkine in BCC compared to microdissected normal epidermis. qRT-PCR confirmed increased expression of ALK (p<0.05). Stronger staining of phosphorylated ALK in BCC tumour nests than normal skin was observed by immunohistochemistry. Additionally, Crizotinib, an FDA-approved ALK inhibitor, reduced keratinocyte proliferation in culture, whereas a c-Met, another receptor tyrosine kinase, inhibitor did not. Crizotinib significantly reduced the expression of GLI1 and CCND2 mRNA by approximately 60% and 20%, respectively (p<0.05). Conclusions; Our data suggest that ALK may increase GLI1 expression in parallel with the conventional SHH-pathway and promotes keratinocyte proliferation. Furthermore, an ALK inhibitor alone or in combination with targeting SHH-pathway molecules may be a potential treatment for BCC patients. Laser capture microdissection was performed on 5 cases of nodular/superficial BCC, 5 cases of infiltrative BCC.

2013-01-30 | E-GEOD-42109 | biostudies-arrayexpress

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