- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04338542
A Retrospective Study Project of Clinico-molecular Characterization in Patients With Metastatic Colorectal Cancer
A Proof-of-concept Study Investigating the Comparison of the RAS Mutational Status Between Primary Tumor and Metastasis in Patients Affected by Metastatic Colorectal Cancer on the Basis of Different Chemotherapeutic Regimens
This is a retrospective, translational, proof-of-concept study on tumor biopsies done on patients affected by mCRC and exhibiting RAS mutation.
For each patient it will be selected the tissue biopsies of primary tumour and of paired resected metastasis.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
the study implies the subdivision into three groups with a 1:1:1 ratio.
- The first group includes patients treated with surgery of the primary tumor, neoadjuvant chemotherapy plus bevacizumab and, finally, the surgical resection of liver metastasis.
- The second group is similar to group one, with the exception that patients were not treated with a bevacizumab-based regimen.
- The third group, the control group, includes patients presenting with synchronous primary tumour and metastasis resected without any preoperative systemic therapy
Genomic DNA from formalin-fixed paraffin-embedded (FFPE) tissues from the primary tumor and metastatic lesions will be extracted. The genomic DNA will be assessed for the RAS mutational status in a quantitative and qualitative manner using two different approaches: a real-time PCR approach using the SensiScreen® kit (PentaBase Aps) and a next-generation sequencing approach using the Ion Torrent platform by applying the Ion AmpliSeq™ Cancer Hotspot Panel v2 (ThermoFisher Scientific). The real-time PCR is able to provide the relative quantification of the RAS mutant allele by comparing the Ct value of the mutation with respect to the Ct of the reference gene. This ratio will be calculated for both the primary tumor and for the metastasis and then compared. Ion Torrent gives directly the percentage of the mutant allele in each sample. Furthermore, the Cancer Hotspot Panel v2 provides data (both quantitative and qualitative) about the mutational status of additional 49 genes, including the most relevant and frequently mutated genes in CRC (i.e.: APC, TP53, PIK3CA, BRAF and PTEN) and the relative mutational pattern of the primary tumor and the one of the distant metastasis will be compared.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
-
-
-
Bellinzona, Switzerland, 6500
- Istituto Oncologico della Svizzera Italiana
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
General inclusion criteria (valid for all the three cohorts):
- patients with biopsy-proven, stage IV CRC;
- RAS mutation at diagnosis;
- availability of tissue biopsy/resection of both primary tumour and paired liver metastasis for the molecular characterization;
General exclusion criteria (valid for all the three cohorts):
- inadequate material for the molecular characterization of the primary tumour and/or of the related metastasis;
- insufficient amount (%) of tumour cells;
Specific inclusion criteria for each group:
st group:
- first-line bevacizumab plus chemotherapy before resection of liver metastases;
- metastases must be resected metachronously with respect to the primary tumor.
nd group:
- first-line chemotherapy without bevacizumab before resection of liver metastases;
- metastases must be resected metachronously with respect to the primary tumor.
rd group:
- no systemic therapy (immediate surgical resection of primary tumor and paired liver metastases);
- primary tumour and metastasis can be synchronous or metachronous.
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
neoadjuvant chemotherapy plus bevacizumab
Patients treated with surgery of the primary tumor, neoadjuvant chemotherapy plus bevacizumab and, finally, the surgical resection of liver metastasis.
|
Analysis on archived tumor biopsies
|
neoadjuvant chemotherapy
Patients treated with surgery of the primary tumor, neoadjuvant chemotherapy and, finally, the surgical resection of liver metastasis.
|
Analysis on archived tumor biopsies
|
control group
Patients presenting with synchronous primary tumour and metastasis resected without any preoperative systemic therapy.
|
Analysis on archived tumor biopsies
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change of RAS mutant clones in the metastatic lesion
Time Frame: 6 months
|
To confirm that the administration of an antiangiogenic treatment in mCRC RAS mutant patients before liver metastasis resection leads to a significant reduction of RAS mutant clones in the metastatic lesion
|
6 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Molecular patterns other than RAS
Time Frame: 6 months
|
Compare molecular patterns other than RAS in the primary tumor and paired liver metastasis
|
6 months
|
Collaborators and Investigators
Sponsor
Investigators
- Study Chair: Sara De Dosso, MD, Ente Ospedaliero Cantonale, Bellinzona
- Principal Investigator: Milo Frattini, MD, Istituto Cantonale Patologia
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- IOSI-ICP-001
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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