5 Matching Annotations
  1. Last 7 days
    1. Genetic variations associated with gemcitabine treatment outcome in pancreatic cancer

      [Paper-level Aggregated] PMCID: PMC5083195

      Evidence Type(s): Predictive, Functional, Prognostic

      Justification: Predictive: The study indicates that certain SNPs, including rs9637468 and rs4925193, may serve as genetic biomarkers for predicting gemcitabine response during pancreatic cancer therapy, suggesting their role in predicting treatment outcomes. Functional: The research includes an eQTL analysis that investigates the influence of SNPs on gene expression, specifically showing that rs1122269 and rs4925193 have correlations with CDH4 expression, indicating a functional relationship between these variants and gene expression. Prognostic: The association of SNPs with overall survival (OS) in pancreatic cancer patients suggests that these genetic variants may have prognostic implications regarding patient outcomes following treatment.

      Gene→Variant (gene-first): NA:rs10979372 CDH4(1002):rs1122269 NA:rs1374679 LRRC7(57554):rs7515290 CDH4(1002):rs4925193 NA:rs9637468

      Genes: NA CDH4(1002) LRRC7(57554)

      Variants: rs10979372 rs1122269 rs1374679 rs7515290 rs4925193 rs9637468

    2. We then determined the effect of different genotypes at the SNP (rs1122269) of the CDH4 gene on the gemcitabine response. Experimentally, we took advantage of our LCLs with GWAS genotyping data for each cell line and sel

      [Paragraph-level] PMCID: PMC5083195 Section: RESULTS PassageIndex: 16

      Evidence Type(s): Predictive, Functional

      Justification: Predictive: The passage discusses the effect of different genotypes at the SNP (rs1122269) on the response to gemcitabine, indicating a correlation between the variant and treatment response. Functional: The passage describes how the SNP genotype affects CDH4 expression levels in response to gemcitabine exposure, indicating an alteration in molecular function.

      Gene→Variant (gene-first): 1002:rs1122269

      Genes: 1002

      Variants: rs1122269

    3. Next, we tested the hypothesis of whether these four SNPs located in the downstream of KRT8P35 and the intron of CDH4 might also influence the expression of these two genes in a cis-manner. We carried out an eQTL (expres

      [Paragraph-level] PMCID: PMC5083195 Section: RESULTS PassageIndex: 12

      Evidence Type(s): Functional, Prognostic

      Justification: Functional: The passage discusses the influence of SNPs (rs9637468 and rs4925193) on the expression of genes in a cis-manner, indicating that these variants alter molecular function related to gene expression. Prognostic: The mRNA expression levels of CDH4 were associated with overall survival (OS) of pancreatic cancer patients, suggesting that the variants may correlate with disease outcome independent of therapy.

      Gene→Variant (gene-first): 1002:rs1122269 1002:rs4925193 NA:rs9637468

      Genes: 1002 NA

      Variants: rs1122269 rs4925193 rs9637468

    4. After imputation analysis with the 1000 Genome Project, we selected the four top OS-associated imputed SNPs plus the four genotyped SNPs for validation with 537 additional Mayo samples from a second independent cohort us

      [Paragraph-level] PMCID: PMC5083195 Section: RESULTS PassageIndex: 10

      Evidence Type(s): Predictive, Prognostic

      Justification: Predictive: The passage discusses the association of the SNPs rs9637468 and rs4925193 with overall survival (OS) in the context of gemcitabine treatment, indicating their potential as genetic biomarkers for predicting response to therapy. Prognostic: The passage mentions that the SNPs are associated with overall survival (OS) outcomes, suggesting that they may correlate with disease outcome independent of therapy.

      Gene→Variant (gene-first): 1002:rs4925193 NA:rs9637468

      Genes: 1002 NA

      Variants: rs4925193 rs9637468

    5. Those four SNPs (rs7515290, rs1374679, rs10979372, and rs1122269) were mapped to four genomic regions containing four HGNC symbols: LOC100533666, KRT8P35, RPL36P14, and CDH4. Similar to other complex diseases, multiple c

      [Paragraph-level] PMCID: PMC5083195 Section: RESULTS PassageIndex: 7

      Evidence Type(s): Predictive, Diagnostic

      Justification: Predictive: The passage discusses trends of the SNPs being associated with drug response (gemcitabine IC50 values) and mentions pharmacogenomic effects on gemcitabine during pancreatic cancer treatment. Diagnostic: The SNPs are described as influencing disease risk in pancreatic cancer, indicating their potential role in classifying or associating with the disease.

      Gene→Variant (gene-first): NA:rs10979372 1002:rs1122269 NA:rs1374679 57554:rs7515290

      Genes: NA 1002 57554

      Variants: rs10979372 rs1122269 rs1374679 rs7515290