Published in:
Open Access
01-04-2012 | Research
Variations in Suppressor Molecule CTLA-4 Gene Are Related to Susceptibility to Multiple Myeloma in a Polish Population
Authors:
Lidia Karabon, Edyta Pawlak-Adamska, Anna Tomkiewicz, Anna Jedynak, Marek Kielbinski, Dariusz Woszczyk, Stanisław Potoczek, Anna Jonkisz, Kazimierz Kuliczkowski, Irena Frydecka
Published in:
Pathology & Oncology Research
|
Issue 2/2012
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Abstract
Various phenotype and functional T-cell abnormalities are observed in multiple myeloma (MM) patients. The aim of this study was to investigate the association between polymorphisms in the gene encoding cytotoxic T-lymphocyte antigen-4 (CTLA-4), a negative regulator of the T-lymphocyte immune response and susceptibility to multiple myeloma in a Polish population. Two hundred MM patients and 380 healthy subjects were genotyped for the following polymorphisms:
CTLA-4c.49A>G,
CTLA-4g.319C>T,
CTLA-4g.*642AT(8_33), CT60 (
CTLA-4g.*6230G>A), Jo31 (
CTLA-4g.*10223G>T). Our study is the largest and most comprehensive evaluation to date of the association between genetic polymorphisms in the CTLA-4 molecule and multiple myeloma. It was found that
CTLA-4c.49A>G[G], CT60[G], and Jo31[G] alleles were more frequently observed in MM patients than in controls (0.50 vs. 0.44,
p = 0.03, 0.65 vs. 0.58,
p = 0.04, and 0.63 vs. 0.57,
p = 0.03, respectively). Moreover, the haplotype
CTLA-4c.49A>G[G],
CTLA-4g.319C>T[C],
CTLA-4g.*642AT(8_33) [
8], CT60[G], Jo31[G] including all susceptibility alleles increases the risk of MM about fourfold (OR: 3.79, 95%CI: 2.08–6.89,
p = 0.00001). These findings indicate that genetic variations in the
CTLA-4 gene play role in susceptibility to multiple myeloma and warrant further investigation through replication studies.