Abstract
Tenofovir disoproxyl fumarate (TDF) has been associated with renal tubular abnormalities, phosphaturia and proteinuria (retinol binding protein, RBP, loss): vitamin D (VD) and PTH affect these markers. Aim was to understand if some single nucleotide polymorphisms (SNPs) were predictors of renal abnormalities in an Italian cohort of HIV-affected patients. DNA was analyzed through real-time PCR, urinary RBP corrected by creatinine (uRBP/Cr). The majority of patients received TDF. Abnormal uRBP/Cr was more frequent in TDF recipients: eGFR <90 mL/min and TDF were predictors in the whole cohort, whereas eGFR <90 mL/min, TDF concentrations and CYP24A1-3999TT in TDF-treated patients. Phosphate levels were higher low VD level patients: age <50 years, CYP27B1 + 2838CC genotype and non-European ancestry were predictors. PTH levels were border-line higher in TDF patients: non-European ancestry, females, TDF, VD levels < 30 ng/mL and SLC28A2-124CT/TT and ABCC2-24CC were predictors. For the first time, SNPs were associated with PTH, phosphate, calcium and tubular dysfunction in HIV-infected patients.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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ATP Binding Cassette Transporter, Subfamily B / genetics
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Adult
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Anti-HIV Agents / adverse effects*
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Anti-HIV Agents / blood
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Anti-HIV Agents / therapeutic use
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Cohort Studies
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Creatinine / urine
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Female
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Glomerular Filtration Rate
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HIV Infections / drug therapy*
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HIV Infections / genetics
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Humans
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Kidney Diseases / chemically induced
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Kidney Diseases / genetics*
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Logistic Models
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Male
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Middle Aged
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Multidrug Resistance-Associated Protein 2
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Multidrug Resistance-Associated Proteins / genetics
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Phosphates / blood
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Polymorphism, Single Nucleotide*
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Receptors, Calcitriol / genetics
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Retinol-Binding Proteins / urine
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Tenofovir / adverse effects*
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Tenofovir / blood
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Tenofovir / therapeutic use
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Vitamin D3 24-Hydroxylase / genetics
Substances
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ABCB1 protein, human
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ABCC10 protein, human
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ABCC2 protein, human
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ATP Binding Cassette Transporter, Subfamily B
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Anti-HIV Agents
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Multidrug Resistance-Associated Protein 2
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Multidrug Resistance-Associated Proteins
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Phosphates
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Receptors, Calcitriol
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Retinol-Binding Proteins
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VDR protein, human
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Tenofovir
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Creatinine
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CYP24A1 protein, human
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Vitamin D3 24-Hydroxylase