Cited by 33Colorectal Cancer Treatments and StudiesGrowth Hormone and Insulin-like Growth FactorsHER2/EGFR in Cancer Research

Correlation between Gene Expression of IGF-1R Pathway Markers and Cetuximab Benefit in Metastatic Colorectal Cancer

Huang, Fei, Xu, Li-an, Khambata-Ford, Shirin·2012·Clinical Cancer Research

Published version of a preprint

Abstract

Purpose: This study examined potential correlations between markers related to the insulin-like growth factor-1 receptor (IGF-1R) pathway and clinical benefit from the anti–epidermal growth factor receptor (EGFR) monoclonal antibody cetuximab in metastatic colorectal cancer (mCRC). Experimental Design: Gene expression profiles for 70 pretreatment specimens from metastatic lesions of patients with chemorefractory mCRC receiving cetuximab monotherapy were analyzed using 74 predefined Gene-Chip probesets representing 33 unique IGF-1R pathway markers to determine correlations with progression-free survival (PFS) and disease control rate. Results: Higher IGF-1R, higher GRB7, and lower INSIG2 expression were associated with longer PFS with cetuximab in univariate analyses, particularly in patients with wild-type K-Ras tumors: median, 122 versus 60 days (P = 0.01), 122 versus 57 days (P = 0.011), and 57 versus 156 days (P < 0.0001), favoring higher IGF-1R, higher GRB7, and lower INSIG2 expression, respectively. Lower IGF-1 expression was associated with a PFS benefit with cetuximab, whereas lower IGFBP3 and INSR expression levels showed trends for a PFS benefit. Lower INSIG2 expression (vs. higher expression) was associated with greater PFS in the high epiregulin-expressing group (P = 0.001), but not in the low-expressing cohort suggesting an effect independent from the previously reported effect of epiregulin expression. Lower INSIG2 expression was also associated with higher disease control rate in the overall population (51.4% vs. 11.4%; P = 0.001) and wild-type K-Ras subset (76.2% vs. 18.2%; P < 0.0001). Conclusions: These results suggest that markers of the IGF-1R pathway may play a role in predicting benefit from cetuximab therapy in mCRC. Additional clinical studies are warranted to validate these findings. Clin Cancer Res; 18(4); 1156–66. ©2012 AACR.

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Crossref · 10.1158/1078-0432.ccr-11-1135

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Authors
Huang, F., Xu, L.-A., & Khambata-Ford, S.
Affiliations
  • Bristol-Myers Squibb (United States) (US)
  • Authors' Affiliation: Bristol-Myers Squibb Co., Princeton, New Jersey
Venue
Clinical Cancer Research
Published
2012-02-14
Volume
18
Issue
4
Pages
1156-1166
ISSN
  • 1078-0432 (ISSN-L)
  • 1557-3265
OpenAlex
W2143476323
Cited by
33
References
64
Citations by year
2023: 3 · 2022: 2 · 2021: 2 · 2019: 3 · 2018: 2 · 2017: 2 · 2016: 4 · 2015: 5 · 2014: 4 · 2013: 4 · 2012: 2
FWCI
2.37
Type
journal article
Language
en
Open access
closed
Locations
  • Clinical Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Oncology › Colorectal Cancer Treatments and Studies
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
  • Health Sciences › Medicine › Oncology › HER2/EGFR in Cancer Research
Keywords
cetuximab, metastatic colorectal cancer, gene expression biomarkers, anti-EGFR monoclonal antibody, progression-free survival, disease control rate, KRAS wild-type, Grb7, INSIG2, epiregulin, insulin-like growth factor I, IGFBP-3, insulin receptor, predictive biomarkers
MeSH terms
Cetuximab, Adult, Aged, Aged, 80 and over, Antibodies, Monoclonal, Antineoplastic Agents, Female, Humans, Insulin-Like Growth Factor I, Male, Membrane Proteins, Middle Aged, Mutation, Neoplasm Metastasis, Proto-Oncogene Proteins, Receptor, Insulin, Biomarkers, Tumor, Colorectal Neoplasms, Signal Transduction, Antigens, CD, Gene Expression, Survival Analysis, Proto-Oncogene Proteins p21(ras), Treatment Outcome, Receptor, IGF Type 1, ras Proteins, Insulin-Like Growth Factor Binding Protein 3, Gene Expression Profiling, Intracellular Signaling Peptides and Proteins, GRB7 Adaptor Protein, Antibodies, Monoclonal, Humanized

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