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Comparative Study
. 2013 May;15(5):535-41.
doi: 10.1093/neuonc/nos324. Epub 2013 Jan 29.

Inherited variant on chromosome 11q23 increases susceptibility to IDH-mutated but not IDH-normal gliomas regardless of grade or histology

Terri Rice  1 , Shichun Zheng, Paul A Decker, Kyle M Walsh, Paige Bracci, Yuanyuan Xiao, Lucie S McCoy, Ivan Smirnov, Joseph S Patoka, Helen M Hansen, George Hsuang, Joe L Wiemels, Tarik Tihan, Alexander R Pico, Michael D Prados, Susan M Chang, Mitchel S Berger, Alissa Caron, Stephanie Fink, Thomas Kollmeyer, Amanda Rynearson, Jesse Voss, Matthew L Kosel, Brooke L Fridley, Daniel H Lachance, Jeanette E Eckel-Passow, Hugues Sicotte, Brian Patrick O'Neill, Caterina Giannini, John K Wiencke, Robert B Jenkins, Margaret R Wrensch
Affiliations
Comparative Study

Inherited variant on chromosome 11q23 increases susceptibility to IDH-mutated but not IDH-normal gliomas regardless of grade or histology

Terri Rice et al. Neuro Oncol. 2013 May.

Abstract

Introduction: Recent discoveries of inherited glioma risk loci and acquired IDH mutations are providing new insights into glioma etiology. IDH mutations are common in lower grade gliomas and secondary glioblastomas and uncommon in primary glioblastomas. Because the inherited variant in 11q23 has been associated with risk of lower grade glioma and not with glioblastomas, we hypothesized that this variant increases susceptibility to IDH-mutated gliomas, but not to IDH-wild-type gliomas.

Methods: We tested this hypothesis in patients with glioma and controls from the San Francisco Adult Glioma Study, the Mayo Clinic, and Illumina controls (1102 total patients, 5299 total controls). Case-control additive associations of 11q23 risk alleles (rs498872, T allele) were calculated using logistic regression, stratified by tumor IDH status (mutated or wild-type) and by histology and grade. We also adjusted for the recently discovered 8q24 glioma risk locus rs55705857 G allele.

Results: The 11q23 glioma risk locus was associated with increased risk of IDH-mutated gliomas of all histologies and grades (odds ratio [OR] = 1.50; 95% confidence interval [CI] = 1.29-1.74; P = 1.3X10(-7)) but not with IDH-wild-type gliomas of any histology or grade (OR = 0.91; 95% CI = 0.81-1.03; P = 0.14). The associations were independent of the rs55705857 G allele.

Conclusion: A variant at the 11q23 locus increases risk for IDH-mutated but not IDH-wild-type gliomas, regardless of grade or histology.

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Figures

Fig. 1
Fig. 1
Association of 11q23 variant with glioma risk, stratified by histology, grade, and IDH mutation status. Case-control ORs and 95% CIs for each category are from additive logistic models of 0, 1, or 2 rs498872 T alleles and adjusted for study site.
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