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Published on: July 9, 2014
Quantitative analysis of CMV DNA in children the first year after liver transplantation
Carola Kullberg-Lindh1, Henry Ascher, Marie Krantz
1Departments of Pediatrics and Clinical Virology, Göteborg University, Göteborg, Sweden. carola.kulberg-lindh@pediat.gu.se
Insights
Quantitative CMV DNA analysis in pediatric liver transplant recipients aids early diagnosis of cytomegalovirus (CMV) infection. This method helps identify symptomatic cases and avoid unnecessary antiviral treatments like ganciclovir.
Area of Science:
- Pediatric Transplantation
- Virology
- Immunology
Background:
- Cytomegalovirus (CMV) infection poses a significant risk post-solid organ transplantation, particularly in children experiencing primary infections.
- Early and accurate diagnosis of CMV infection is crucial for effective management in pediatric transplant patients.
- Quantitative analysis of CMV DNA in blood offers a potential method for facilitating early diagnosis.
Purpose of the Study:
- To evaluate the utility of quantitative CMV DNA analysis in identifying symptomatic CMV infection in pediatric liver transplant recipients.
- To assess the correlation between CMV DNA levels and symptomatic versus asymptomatic/latent CMV infection.
- To determine if quantitative CMV DNA monitoring can help guide antiviral therapy decisions.
Main Methods:
- Retrospective analysis of serum samples from 18 pediatric liver transplant recipients (1995-2000).
- Quantitative CMV DNA detection and measurement using the Cobas Amplicor Monitor (Roche).
- Analysis of CMV IgM antibody levels.
Main Results:
- Four patients developed symptomatic CMV infection with high CMV DNA levels (up to 26,400 copies/mL).
- Only one of 11 patients with asymptomatic or latent infection had low-level positive CMV DNA (415 copies/mL).
- CMV IgM was significantly elevated in symptomatic cases, and in one asymptomatic case.
Conclusions:
- Quantitative CMV DNA analysis shows promise for the early identification of CMV disease in pediatric liver transplant patients.
- This quantitative method may help clinicians avoid unnecessary antiviral treatment by distinguishing between significant and insignificant viral loads.
- Monitoring CMV DNA levels could improve patient management and outcomes after pediatric liver transplantation.
Abstract:
CMV infection is a major problem after solid organ transplantation especially in children where primary infection is more common than in adults. Early diagnosis is critical and might be facilitated by quantitative analysis of CMV DNA in blood. In this retrospective study of 18 children who had a liver transplantation 1995-2000, serum samples were analysed by Cobas Amplicor Monitor (Roche). Four patients developed symptomatic CMV infection at a mean time of 4 wk after transplantation. They showed maximum CMV DNA levels in serum of 26 400, 1900, 1300 and 970 copies/mL, respectively. In comparison, CA Monitor was positive, at a low level (415 copies/mL), in one of 11 patients with asymptomatic (4) or latent (7) infection. CMV IgM was detected at significant levels (> or =1/80) in all four patients with symptomatic, and in one with asymptomatic CMV infection. Eight patients were given one or several courses of ganciclovir. Five of these lacked symptoms of CMV disease, and had low (415 copies/mL) or undetectable CMV DNA in serum. The data suggest that quantitative analysis of CMV DNA may be of value in early identification of CMV disease and for avoiding unnecessary antiviral treatment.
