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CXCL12 rs18011157 polymorphısm in patients wıth non-Hodgkin's lymphoma: Is it associated with poor outcome?

1 Department of Hematology, Medical Faculty, Trakya University, Edirne, Turkey
2 Department of Medical Genetics, Medical Faculty, Trakya University, Edirne, Turkey
3 Health Services Vocational College, Trakya University, Edirne, Turkey
4 Department of Rheumatology, Medical Faculty, Trakya University, Edirne, Turkey

Correspondence Address:
Gulsum Emel Pamuk,
Eski Yildiz Cad, Park Apt. No. 22 Daire: 18, 34349, Besiktas, Istanbul
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Source of Support: None, Conflict of Interest: None

Objective: We studied CXCL12-related rs18011157 polymorphism in non-Hodgkin lymphoma (NHL) patients. We also determined the effect of this polymorphism on clinical features and outcome of NHL. Methods: We included 90 NHL patients (54 males, 36 females) and 88 healthy controls (54 males, 34 females). CXCL12-related rs18011157 polymorphism was determined by polymerase chain reaction. Results: rs18011157 polymorphism was significantly more frequent in NHL patients with GA genotype than in healthy controls (37.8% vs. 20.5%, P = 0.011). The frequency of patients with initially high lactate dehydrogenase (LDH) level (65.8% vs. 38.5%) and extranodal involvement (61.1% vs. 43.8%) was significantly higher in the GA plus AA genotype groups when considered altogether (P = 0.01 and 0.09). Poor prognostic factors in univariate analysis were the presence of B symptoms, initially high International Prognostic Index (IPI), splenomegaly, nonresponse to first-line therapy, the presence of early relapse, and carrying A allele (GA plus AA genotypes). The independent prognostic factors in multivariate analysis were only early relapse and an initially high IPI score. Discussion: CXCL12 rs1801157 polymorphism which was found to be associated with extranodal involvement and increased LDH in NHL might be a marker of poor prognosis in patients with GA and AA genotypes. Conclusions: CXCL12-related rs18011517 polymorphism was more frequent in NHL patients: it might be associated with NHL pathogenesis and outcome.

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