Metastatic Colorectal Cancer Clinical Trial
Official title:
A Study Comparing the Gene Profiles of Primary and Heterogeneous Metastases of Colorectal Cancer
The incidence and mortality of colorectal cancer in China's cancer disease spectrum is on the rise, and it is a common malignant tumor that harms the health of Chinese residents.In patients with synchronous metastatic colorectal cancer, RAS status is highly consistent in primary focus and metastasis, so NCCN guidelines recommend RAS testing of primary or metastatic tissue is feasible .However, there are also some reports that the difference of RAS status between primary and metastatic lesions was up to 22%.In additiont,there are few studies on whether the gene profile of the metastatic lesion is the same as that of the primary lesion in patients with postoperative heterogeneous metastasis in patients with stage III colorectal cancer.
The incidence and mortality of colorectal cancer in China's cancer disease spectrum is on the
rise, and it is a common malignant tumor that harms the health of Chinese residents. Now NCCN
guidelines recommend targeted drugs for the treatment of metastatic colorectal cancer mainly
including cetuximab and panizumab whic targeting EGFR , as well as the bevacizumab and arber
regofini, etc which targeing anti-angiogenic.Cetuximab and panizumab are only effective in
patients with RAS wild type.
Previous studies have shown that In patients with synchronous metastatic colorectal cancer,
RAS status is highly consistent in primary focus and metastasis, so NCCN guidelines recommend
RAS testing of primary or metastatic tissue is feasible .However, there are also some reports
that the difference of RAS status between primary and metastatic lesions was up to 22%.In
additiont,there are few studies on whether the gene profile of the metastatic lesion is the
same as that of the primary lesion in patients with postoperative heterogeneous metastasis in
patients with stage III colorectal cancer.
Therefore, it has important clinical significance to compare the difference of gene profile
between metastatic lesion and primary lesion in patients with postoperative metastasis of
stage III colorectal cancer.
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