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Clinical Significance of Genetic Variants in Colon Cancer

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Colon Cancer Diagnosis and Therapy Vol. 3

Abstract

Colon cancer (CC) is a serious global health problem detected, among other gastrointestinal (GI) tumors. Several risk factors suggested for the occurrence of CC include modifiable and nonmodifiable risk factors. Notably, the genetic risk factors play a crucial role in developing susceptible to CC. The molecular heterogeneity of CC also remains a significant and crucial aspect for personalized therapy. Therefore, detecting suitable molecular genetic biomarkers related to CC development are essential to support healthcare providers for therapy. However, the identification and characterization of the genetic variants clinically during the diagnosis for appropriate therapy still remain unclear. Determining the cancer susceptibility via genetic variants, including single-nucleotide polymorphism (SNPs), provides a new opportunity in the diagnostics. Thus, in this chapter, we revised the clinically significant genetic variants associated with CC based on the existing data. As suggested from the previous studies, the gene SNPs (APC, ATM, BRAF, BRCA1, DUSP10, MAP2K1, MLH1, MTHFR) are associated with colon cancer. The miRNA SNPs (rs8905 (PRKAR1A), rs8176318 (BRCA1)) and miRNA target SNPs as well (rs8905 (PRKAR1A), rs8176318 (BRCA1), let-7, miR-34b/c/146a/603, miR-149, miR-192a/608/27a SNPs) were also described that might affect and alter the genetic susceptibility of CC.

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Abbreviations

APC :

Adenomatous polyposis coli

ATM :

Ataxia telangiectasia mutated

BRAF :

B-Raf proto-oncogene, serine/threonine kinase

BRCA1 :

BRCA1, DNA repair associated

BRCA2 :

BRCA2, DNA repair associated

CC :

Colon cancer

CI :

Confidence interval

DUSP1 :

Dual-specificity phosphatase 1

DUSP10 :

Dual-specificity phosphatase 10

EGFR :

Epidermal growth factor receptor

FANCA :

FA complementation group A

FANCE :

Fanconi’s anemia complementation group

FISH:

Fluorescence in situ hybridization

GWAS:

Genome-wide association

LIG1:

DNA ligase 1

LSC:

The left-sided colon

MAP2K1 :

Mitogen-activated protein kinase 1

MLH1:

MutL homolog 1

MMR:

Mismatch repair

MSH2 :

MutS homolog 2

MSH6 :

MutS homolog 6

MSI:

Microsatellite instability

MSS:

Microsatellite stable

MTHFR :

Methylenetetrahydrofolate reductase

OOR :

Ordinal odds ratio

OS:

Overall survival

PMS2:

PMS1 homolog 2, mismatch repair system component

RC:

Right colon

SNPs:

Single nucleotide polymorphism

SULT2B1 :

Sulfotransferase family 2B member 1

TCGA :

Cancer Genome Atlas

VDR :

Vitamin D receptor

wt:

Wild-type

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Nakashidze, I., Petrović, N., Kedelidze, N., Dariya, B. (2022). Clinical Significance of Genetic Variants in Colon Cancer. In: Shukla, D., Vishvakarma, N.K., Nagaraju, G.P. (eds) Colon Cancer Diagnosis and Therapy Vol. 3. Springer, Cham. https://doi.org/10.1007/978-3-030-72702-4_4

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