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Szkandera, J; Pichler, M; Absenger, G; Stotz, M; Weissmueller, M; Samonigg, H; Asslaber, M; Lax, S; Leitner, G; Winder, T; Renner, W; Gerger, A.
A functional germline variant in GLI1 implicates hedgehog signaling in clinical outcome of stage II and III colon carcinoma patients.
Clin Cancer Res. 2014; 20(6):1687-1697 Doi: 10.1158/1078-0432.CCR-13-1517 [OPEN ACCESS]
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Führende Autor*innen der Med Uni Graz

Gerger Armin

Szkandera Joanna

Co-Autor*innen der Med Uni Graz

Absenger Gudrun

Asslaber Martin

Leitner Gerhard

Pichler Martin

Renner Wilfried

Samonigg Hellmut

Stotz Michael

Weissmüller Melanie

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Abstract:

Cumulating evidence indicates that germline variants in the Wnt, Notch, and Hedgehog pathways are involved in colon carcinoma progression and metastasis. We investigated germline polymorphisms in a comprehensive panel of Wnt, Notch, and Hedgehog pathway genes to predict time to recurrence (TTR) and overall survival in patients with stage II and III colon carcinoma. A total of 742 consecutively collected patients with stage II and III colon carcinoma were included in this retrospective study. Genomic DNA was analyzed for 18 germline polymorphisms in Wnt, Notch, and Hedgehog pathway genes (SFRP, DKK 2 and 3, AXIN2, APC, MYC, TCF7L2, NOTCH2, and GLI1) by TaqMan 5'-exonuclease assays. In univariate analysis, the homozygous mutant variant of GLI1 rs2228226 G>C was significantly associated with decreased TTR in a recessive genetic model after adjustment for multiple testing [HR = 2.35; confidence interval (95% CI), 1.48-3.74; P < 0.001] and remained significant in multivariate analysis including clinical stage, lymphovascular-, vascular-, and perineural-invasion (HR = 2.43; CI 95%, 1.52-3.87; P < 0.001). In subanalyses, the association was limited to patients with surgery alone (HR = 3.21; CI 95%, 1.59-6.49; P = 0.001), in contrast with patients with adjuvant chemotherapy (HR = 0.82; CI 95%, 0.35-1.95; P = 0.657). When the subgroup of patients with "high-risk" GLI1 rs2228226 C/C genotype was analyzed, no benefit of adjuvant 5-fluorouracil-based chemotherapy could be found. This is the first study identifying GLI1 rs2228226 G>C as an independent prognostic marker in patients with stage II and III colon carcinoma. Prospective studies are warranted to validate our findings. ©2014 AACR.

Find related publications in this database (using NLM MeSH Indexing)

Adenocarcinoma - genetics Adenocarcinoma - mortality Adenocarcinoma - pathology

Adult -

Aged -

Aged, 80 and over -

Colonic Neoplasms - genetics Colonic Neoplasms - mortality Colonic Neoplasms - pathology

Female -

Genotype -

Hedgehog Proteins - metabolism

Humans -

Immunohistochemistry -

Kaplan-Meier Estimate -

Male -

Middle Aged -

Neoplasm Staging -

Polymorphism, Single Nucleotide -

Prognosis -

Proportional Hazards Models -

Retrospective Studies -

Signal Transduction - physiology

Transcription Factors - genetics

Tumor Markers, Biological - genetics

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