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Biomarkers for Apatinib and Bevacizumab in Second-line Therapy for Colorectal Cancer(BABST-C)

ABSTRACT: Bevacizumab, an antibody against vascular endothelial generated factor (VEGF), combined with the fluorouracil-based chemotherapy regimens has been approved in the 1st and 2nd line treatments for metastatic colorectal cancers(mCRC). Other inhibitors of the VEGF pathway, such as Ramucirumab and Aflibercept are also approved in the 2nd line therapy. Apatinib is a small molecule tyrosine kinase inhibitor (TKI), which can highly selectively bind to and strongly block VEGF receptor 2 (VEGFR - 2), resulting in reduced cell migration, proliferation, and tumor microvascular density mediated by VEGF . In this study, the patients who have progressed following or on the first-line oxaliplatin and fluorouracil（5-FU） combined with bevacizumab are randomised into two arms(FOLFIRI plus apatinib or FOLFIRI plus bevacizumab) in the 2nd line setting. To identify specific biomarkers at the genetic and proteomic levels between two arms is the primary end point.

DISEASE(S): Colorectal Neoplasms

PROVIDER: 2289692 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Apatinib Versus Bevacizumab in Second-line Therapy for Colorectal Cancer(ABST-C)

Project description:Bevacizumab, as an antibody of vascular endothelial generated factor (VEGF), combined with the fluorouracil-based chemotherapy regimens for metastatic colorectal cancer, has become the classical first-line treatment. However, vast majority of patients eventually will suffer progression disease. The second-line treatment includes replacing chemotherapy regimens whistle continuing bevacizumab or other anti-VEGF antibodies, such as Aflibercept and Ramucirumab. Apatinib is a small molecule tyrosine kinase inhibitor (TKI), which can highly selectively bind to and strongly block VEGF receptor 2 (VEGFR - 2), also potently suppress the activities of Ret, c-kit and c-src, resulting in reduced cell migration, proliferation, and tumor microvascular density mediated by VEGF .There are already robust data showing that antibodies aimed at blocking VEGF signaling pathways combined with chemotherapy to treat advanced colorectal cancer is superior as compared to chemotherapy alone. Thus, we hypothesize that the effect of using the second-line chemotherapy regimens combined with apatinib may be superior to those combined with bevacizumab. In this study,the patients who have progressed following or on first-line oxaliplatin and 5-FU combined with bevacizumab are randomised into two arms. Patients in the experimental arm receive second-line FOLFIRI combined with apatinib and those in the control arm receive second-line FOLFIRI combined with bevacizumab. To compare the efficacy and safety of the two arms, progression-free survival(PFS) is the primary end point.If apatinib is superior to bevacizumab in the second-line setting,it is one possible option of anti-angiogenic therapy in combination with second-line FOLFIRI for treatment of advanced colorectal cancer.

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TAS-102, Irinotecan, and Bevacizumab in Pre-treated Metastatic Colorectal Cancer (TABAsCO), A Phase II Clinical Trial. ClinicalTrials.gov NCT04109924

Project description:Background: The efficacy of FOLFIRI plus an antiangiogenesis biologic agent as 2nd line therapy for metastatic colorectal adenocarcinoma is limited. TAS-102 is a novel oral antimetabolite with a distinct mechanism of action from fluoropyrimidines. We evaluated the antitumor efficacy of TAS-102, irinotecan and bevacizumab in patients with pre-treated, advanced colorectal adenocarcinoma in a multicenter, phase II, single-arm study. Methods: Patients with advanced colorectal adenocarcinoma who had progressed after oxaliplatin and fluoropyrimidine and were eligible for treatment with bevacizumab were treated with irinotecan, bevacizumab, and TAS-102 in 28-day cycles. The primary endpoint was progression-free survival (PFS). Results: We enrolled 35 evaluable patients. The study was positive. The median PFS was 7.9 (90% CI 6.2-11.8) months (vs. 6 months in historical control, p=0.018). The median overall survival was 16.5 (90% CI 9.8-17.5) months. Sixty-seven percent of patients experienced grade 3 or higher treatment-related adverse events. The most common toxicities were hematological (neutropenia) and gastrointestinal (diarrhea, nausea, and vomiting). Conclusions: Irinotecan, TAS-102 and bevacizumab is an active 2nd line therapy for patients with metastatic colorectal adenocarcinoma. Neutropenia is common and can affect dose density/intensity mandating use of G-CSF. A randomized study versus standard of care therapy is warranted.

2024-08-26 | GSE275628 | GEO

Identification of SNP candidates associated with chemo-responsiveness in colorectal cancer patients

Project description:Response rates of 118 colorectal cancer patients to regiments were evaluated by histoculture drug response assay. Affymetrix SNP 6.0 chips were used to determine genotypes of the same colorectal cancer patients. SNPs associated with chemosensitivity to treatment regiments were identified by genome-wide association study. AV: avastin (Bevacizumab), ER: Erbitux (Cetuximab), FXA: bevacizumab + FOLFOX, FXE: Cetuximab + FOLFOX , FRA: Bevacizumab + FOLFIRI, FRE: Cetuximab + FOLFIRI; Numbers (0-100) represent responsiveness to the given drug regimens; the larger, the better responsive to given regimens

2011-03-25 | GSE21228 | GEO

Transcriptomic and metabolic effect of immune checkpoint inhibitors on cellular components in renal cell tumor microenvironment and in Sunitinib resistant renal cell carcinoma [III]

Project description:Tumor microenvironmental cellular components like bone marrow cells stromal cells macrophages changes due to sunitinib resistance may affect their efficacy in advanced stage renal cell carcinomas. Immune checkpoint inhibitors (ICIs) have been approved as 2nd line therapy over acquired resistance. Each ICI uniquely affected different cellular components. Better understanding of transcriptomic, metabolomic or proteomic changes due to ICI treatment is necessary to development proper immunotherapy.

2024-03-07 | GSE226968 | GEO

Transcriptomic and metabolic effect of immune checkpoint inhibitors on cellular components in renal cell tumor microenvironment and in Sunitinib resistant renal cell carcinoma [II]

2024-03-07 | GSE226967 | GEO

Transcriptomic and metabolic effect of immune checkpoint inhibitors on cellular components in renal cell tumor microenvironment and in Sunitinib resistant renal cell carcinoma [1]

2024-03-07 | GSE226965 | GEO

Transcription profiling of human xenografts produced from an endometrial cell line treated with bevacizumab (Avastin)

Project description:Microarrays were used to determine the efficacy of bevacizumab (a monoclonal antibody against the vascular endothelial growth factor and its receptors.) on endometrial cancer cells. Endometrial cancer is the most frequent gynecologic cancer in women. Long term outcomes for patients with advanced stage or recurrent disease are poor. Targeted molecular therapy against the vascular endothelial growth factor (VEGF) and its receptors constitute a new therapeutic option for these patients. The goal of our work was to assess the potential effectiveness of inhibition of VEGF/VEGFR signaling in a xenograft model of endometrial cancer using bevacizumab (Avastin, a humanized antibody against VEGFA). We also aimed to identify molecular markers of sensitivity or resistance to this agent. We show that bevacizumab retards tumor growth in athymic mice by inhibiting molecular components of signaling pathways that sustain cell survival and proliferation. We also demonstrate that resistance to bevacizumab may involve up-regulation of antiapoptotic genes and certain proto-oncogenes. Experiment Overall Design: Human xenografts produced from endometrial cell line, grown in athymic mice, were treated in vivo with bevacizumab.

2009-11-16 | E-GEOD-18195 | biostudies-arrayexpress

Notch and VEGF pathways play distinct but complementary roles in tumor angiogenesis

Project description:We asked whether combining Notch and VEGF blockade would enhance suppression of tumor angiogenesis and growth, using the NGP neuroblastoma model. NGP tumors were engineered to express a Notch1 decoy construct (N1D), which restricts Notch signaling, and then treated with either the anti-VEGF antibody bevacizumab or vehicle. Combining Notch and VEGF blockade led to blood vessel regression, increasing endothelial cell apoptosis and disrupting pericyte coverage of endothelial cells. Combined Notch and VEGF blockade did not affect tumor weight, but did additively reduce tumor viability. Our results indicate that Notch and VEGF pathways play distinct but complementary roles in tumor angiogenesis, and show that concurrent blockade disrupts primary tumor vasculature and viability further than inhibition of either pathway alone. 6 neuroblastoma tumors were transfected with Notch1 decoy, 6 with Notch1 decoy and treated with bevacizumab, 6 tumors treated with bevacizumab, and 6 control tumors were profiled by human 133A 2.0 arrays

2013-12-01 | E-GEOD-48880 | biostudies-arrayexpress

A multicenter, single-arm phase II trial of bevacizumab beyond initial progression in patients treated with first-line mFOLFOX6 followed by second-line FOLFIRI in Advanced Colorectal Cancer

Project description:Interventions: bevacizumab plus mFOLFOX6 therapy (first-line treatment) bevacizumab plus FOLFIRI therapy (second-line treatment) Primary outcome(s): 2nd progression free survival (2nd PFS) Study Design: Single arm Non-randomized

| 2622240 | ecrin-mdr-crc

Vascular Permeability and Apoptosis are Separable Processes in Retinal Ischemia-Reperfusion Injury

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2010-06-01 | GSE20521 | GEO

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