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LY3200882 and Capecitabine in Advanced Resistant TGF-beta Activated Colorectal Cancer (EORTC1615)

ABSTRACT: Part I of this study is designed to identify the recommended phase 2 dose (RP2D) of the combination regimen of LY3200882/capecitabine as second line treatment in patients with 5-FU or capecitabine resistant CRC. Part II is designed to obtain proof of principle of the LY3200882 plus capecitabine combination in patients with chemo-resistant CRC. The combination of LY3200882 plus capecitabine will be given as second line therapy in the phase II part of this study. Patients with chemotherapy resistant activated TGF-β signature-like tumors will have received a fluoropyrimidine (5FU or capecitabine) in the first line of chemotherapy, usually combined with oxaliplatin and, depending upon local hospital preferences or national guidelines, also bevacizumab, or cetuximab/panitumumab if the tumor is KRAS wild type. Addition of LY3200882 to capecitabine should thus result in reversal of unresponsiveness, which is the first step in exploring this concept in the clinic. Capecitabine can be used as single agent in advanced CRC and is thus attractive for this study concept. If proof of principle is achieved also other tumor types can be explored with this genetic makeup, such as non-small cell lung cancer (NSCLC) in second line of treatment after platinum doublet therapy in first line, usually cisplatin/carboplatin-pemetrexed in non-squamous and cisplatin/carboplatin-gemcitabine or cisplatin/carboplatin-paclitaxel in squamous type NSCLC.

DISEASE(S): Colorectal Neoplasms,Colorectal Cancer Metastatic

PROVIDER: 2311844 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Galunisertib and Capecitabine in Advanced Resistant TGF-beta Activated Colorectal Cancer

Project description:Part I of this study is designed to identify the recommended phase 2 dose (RP2D) of the combination regimen of galunisertib/capecitabine as second line treatment in patients with 5-FU or capecitabine resistant CRC. Part II is designed to obtain proof of principle of the galunisertib plus capecitabine combination in patients with chemo-resistant CRC. The combination of galunisertib plus capecitabine will be given as second line therapy in the phase II part of this study. Patients with chemotherapy resistant activated TGF-β signature-like tumors will have received a fluoropyrimidine (5FU or capecitabine) in the first line of chemotherapy, usually combined with oxaliplatin and, depending upon local hospital preferences or national guidelines, also bevacizumab, or cetuximab/panitumumab if the tumor is KRAS wild type. Addition of galunisertib to capecitabine should thus result in reversal of unresponsiveness, which is the first step in exploring this concept in the clinic. Capecitabine can be used as single agent in advanced CRC and is thus attractive for this study concept. If proof of principle is achieved also other tumor types can be explored with this genetic makeup, such as non-small cell lung cancer (NSCLC) in second line of treatment after platinum doublet therapy in first line, usually cisplatin/carboplatin-pemetrexed in non-squamous and cisplatin/carboplatin-gemcitabine or cisplatin/carboplatin-paclitaxel in squamous type NSCLC.

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Platinum chemotherapy induces diverse evolutionary trajectories in high grade serous ovarian cancer

Project description:Cisplatin- and carboplatin-resistant high-grade serous ovarian cancer (HGSC) cells were generated and new lines were created from single cell clones. All cells were derived from a common ancestral line, Ovcar4. RNA sequencing was performed to examine transcriptional changes related to acquisition of platinum resistance.

2022-08-01 | GSE141630 | GEO

Expression data from A2780 (cisplatin-sensitive) and Round5 A2780 (cisplatin-resistant) cell lines.

2009-04-17 | E-GEOD-15372 | biostudies-arrayexpress

Promoter CpG island methylation data from A2780 (cisplatin-sensitive) and Round5 A2780 (cisplatin-resistant) cell lines.

Project description:Cisplatin and carboplatin are the primary first-line therapies for the treatment of ovarian cancer. However, resistance to these platinum-based drugs occurs in the large majority of initially responsive tumors, subsequently resulting in a poor long-term prognosis. To model the onset of drug resistance, and investigate the DNA methylation alterations associated with cisplatin resistance, we treated clonally derived, drug-sensitive A2780 epithelial ovarian cancer cells with increasing concentrations of cisplatin. After several cycles of drug selection, the isogenic drug-sensitive and -resistant pairs were subjected to global CGI methylation microarray analyses. We treated clonally derived, drug-sensitive A2780 epithelial ovarian cancer cells with increasing concentrations of cisplatin. After several cycles of drug selection, the isogenic drug-sensitive and -resistant pairs were subjected to global CGI methylation analyses by differential methylation hybridization (DMH) using a customed 44K promoter CGI microarray.

2010-06-19 | E-GEOD-15373 | biostudies-arrayexpress

Promoter CpG island methylation data from A2780 (cisplatin-sensitive) and Round5 A2780 (cisplatin-resistant) cell lines.

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Project description:Triple negative breast cancer (TNBC) is the subtype of breast cancer most lacking in efficient treatment options. Although many TNBCs show remarkable responses to carboplatin-based chemotherapy, they often develop resistance over time. With increasing use of carboplatin in clinics, there is a pressing need to understand mechanisms causing carboplatin resistance and identify the vulnerabilities of carboplatin-resistant tumors. We generated carboplatin-resistance models based on the TNBC cell line MDA-MB-468 and patient derived xenograft (PDX) models of TNBCs. By combining the results of mass spectrometry-based proteome profiling and a kinome RNA interference screen, we assessed the molecular changes and vulnerabilities of carboplatin-resistant TNBCs. Using pharmacological inhibition of the identified targets, we validated the dependencies of carboplatin-resistant cells in vitro and in PDX models. We found that carboplatin resistance in TNBC is accompanied by drastic proteome rewiring. Carboplatin-induced metabolism alterations and upregulation of anti-oxidative response keep low levels of DNA damage and support cell replication in the presence of carboplatin. Carboplatin-resistant cells also exhibited longer mitosis due to dysregulation of mitotic checkpoint. Whereas the components of the mitotic checkpoints, AURKA and BUB1, are essential for the viability of carboplatin-resistant cells, the checkpoint kinases CHEK1 and WEE1 are indispensable for survival of carboplatin-treated resistant cells. We confirmed that pharmacological inhibition of CHEK1 by prexasertib in the presence of carboplatin is well tolerated by mice and suppresses the growth of carboplatin-resistant TNBC xenografts. Abrogation of the mitotic checkpoint re-sensitizes carboplatin-resistant TNBCs to carboplatin. CHEK1 inhibition represents a potential strategy for the treatment of carboplatin-resistant TNBCs.

2021-07-07 | PXD021726 | Pride

miR-634 restores drug sensitivity in resistant ovarian cancer cells by targeting the Ras-MAPK pathway

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2014-02-04 | E-GEOD-54665 | biostudies-arrayexpress

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Proteomic signature of neuroblastoma cells UKF-NB-4 reveals key role of lysosomal sequestration and the proteasome complex in acquiring chemoresistance to cisplatin

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