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Torquetenovirus Serum Load and Long-Term Outcomes in Renal Transplant Recipients

Overview
Journal J Clin Med
Specialty General Medicine
Date 2020 Feb 12
PMID 32041187
Citations 16
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Abstract

Following transplantation, patients must take immunosuppressive medication for life. Torquetenovirus (TTV) is thought to be marker for immunosuppression, and TTV-DNA levels after organ transplantation have been investigated, showing high TTV levels, associated with increased risk of infections, and low TTV levels associated with increased risk of rejection. However, this has been investigated in studies with relatively short follow-up periods. We hypothesized that TTV levels can be used to assess long term outcomes after renal transplantation. Serum samples of 666 renal transplant recipients were tested for TTV DNA. Samples were taken at least one year after renal transplantation, when TTV levels are thought to be relatively stable. Patient data was reviewed for graft failure, all-cause mortality and death due to infectious causes. Our data indicates that high TTV levels, sampled more than one year post-transplantation, are associated with all-cause mortality with a hazard ratio (HR) of 1.12 (95% CI, 1.02-1.23) per log increase in TTV viral load, ( = 0.02). Additionally, high TTV levels were also associated with death due to infectious causes (HR 1.20 (95% CI 1.01-1.43), = 0.04). TTV levels decrease in the years following renal transplantation, but remain elevated longer than previously thought. This study shows that TTV level may aid in predicting long-term outcomes, all-cause mortality and death due to an infectious cause in renal transplant patients sampled over one year post-transplantation.

Citing Articles

Torque Teno Virus: A Promising Biomarker in Kidney Transplant Recipients.

Dal Lago S, Brani P, Ietto G, Dalla Gasperina D, Gianfagna F, Giaroni C Int J Mol Sci. 2024; 25(14).

PMID: 39062987 PMC: 11277443. DOI: 10.3390/ijms25147744.


Torquetenovirus from bronchoalveolar lavage fluid as a biomarker for lung infection among immunocompromised hosts.

Zhu Z, Wang Y, Ning W, Liu C, Chen C Biomark Med. 2024; 18(13-14):581-591.

PMID: 38982729 PMC: 11370955. DOI: 10.1080/17520363.2024.2366148.


Dynamics of torque teno virus load in kidney transplant recipients with indication biopsy and therapeutic modifications of immunosuppression.

Reineke M, Morath C, Speer C, Rudek M, Bundschuh C, Klein J Front Med (Lausanne). 2024; 11:1337367.

PMID: 38327708 PMC: 10847215. DOI: 10.3389/fmed.2024.1337367.


High-Density Lipoprotein Particles and Torque Teno Virus in Stable Outpatient Kidney Transplant Recipients.

Jonker J, Doorenbos C, Kremer D, Gore E, Niesters H, van Leer-Buter C Viruses. 2024; 16(1).

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Smoking, Alcohol Intake and Torque Teno Virus in Stable Kidney Transplant Recipients.

Doorenbos C, Jonker J, Hao J, Gore E, Kremer D, Knobbe T Viruses. 2023; 15(12).

PMID: 38140628 PMC: 10748022. DOI: 10.3390/v15122387.


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