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. 2019 Mar 28;14(3):e0214421.
doi: 10.1371/journal.pone.0214421. eCollection 2019.

Genetic variation in CCR2 and CXCL12 genes impacts on CD4 restoration in patients initiating cART with advanced immunesupression

Clara Restrepo  1   2 , Mónica Gutierrez-Rivas  3 , Yolanda M Pacheco  4 , Marcial García  1   2 , Julià Blanco  5 , Luz M Medrano  3 , María A Navarrete-Muñoz  1   2 , Félix Gutiérrez  6 , Pilar Miralles  7 , David Dalmau  8 , Juan Luis Gómez  9 , Miguel Górgolas  10 , Alfonso Cabello  10 , Salvador Resino  3 , José M Benito  1   2 , Norma Rallón  1   2 ; CoRIS and the HIV Biobank integrated in the Spanish AIDS Research Network Project RIS/EPICLIN 10_2015
Affiliations

Genetic variation in CCR2 and CXCL12 genes impacts on CD4 restoration in patients initiating cART with advanced immunesupression

Clara Restrepo et al. PLoS One. .

Abstract

Objective: We investigated the association of genetic polymorphisms in chemokine and chemokine receptor genes with poor immunological recovery in HIV patients starting combined antiretroviral therapy (cART) with low CD4 T-cell counts.

Methods: A case-control study was conducted in 412 HIV-infected patients starting cART with CD4 T-cell count <200 cells/μL and successful viral control for two years. CD4 count increase below 200 cells/μL after two years on cART was used to define INR (immunological non-responder) patients. Polymorphisms in CXCL12, CCL5 and CCR2 genes were genotyped using sequenom's MassARRAY platform.

Results: Thirty two percent (134/412) of patients were classified as INR. After adjusting by age, route of HIV infection, length of infection before cART and viral hepatitis coinfection, CCR2 rs1799864-AG genotype was significantly associated with INR status (OR [95% CI]: 1.80 [1.04-3.11]; p = 0.04), and CXCL12 rs1801157-TT genotype showed a trend (OR [95% CI]: 2.47 [0.96-6.35]; p = 0.06).

Conclusions: CCR2 rs1799864-AG or CXCL12 rs1801157-TT genotypes influence on the probability of poor CD4 recovery in the population of HIV patients starting cART with low CD4 counts. Genotyping of these polymorphisms could be used to estimate the risk of poor CD4 restoration, mainly in patients who are diagnosed late in the course of infection.

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1
Fig 1. Flow chart of inclusion criteria of patients.
Flow chart showing the inclusion criteria and the sequential strategy of selection of patients included in the study. Numbers inside the boxes indicate the number of patients selected after each step in the selection process.
See this image and copyright information in PMC

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