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Journal of Clinical Microbiology, May 1998, p. 1333-1337, Vol. 36, No. 5
Medizinische Klinik und Poliklinik,
Received 2 October 1997/Returned for modification 2 December
1997/Accepted 26 January 1998
Murex hybrid capture DNA assay (HCS) is a solution hybridization
antibody capture assay for detection and quantitation of cytomegalovirus (CMV) DNA in leukocytes. To determine whether CMV HCS
is sensitive enough to initiate and monitor antiviral therapy after
allogeneic stem cell transplantation (SCT), 51 consecutive SCT
recipients were prospectively screened for the appearance of CMV
infection by HCS, PCR, and culture assays from blood samples. Preemptive antiviral therapy was initiated after the second positive PCR result in all patients, as previously reported, and HCS was not
considered for clinical decision making. A total of 417 samples were
analyzed. Of these, 21 samples were found to be positive by PCR and
HCS, 88 samples were PCR positive but HCS negative, and 308 were
negative by both assays. Concordance of results between PCR and HCS and
between HCS and blood culture was observed in 78.9 and 95.9% of the
samples assayed, respectively. PCR was found to be more sensitive than
HCS, and HCS was more sensitive than the blood culture assay
(P < 0.0001). Four patients with symptomatic CMV
infection were PCR positive prior to the onset of CMV-related symptoms,
whereas HCS detected CMV DNA in three patients prior to and one at
onset of CMV disease. The numbers of genomes per milliliter of blood
were higher in patients with symptomatic CMV infection than in those
with asymptomatic CMV infection (P = 0.06). None of
the HCS-negative patients developed CMV disease. Thus, all patients
with CMV disease were correctly identified by HCS; however, the lower
sensitivity limit of the HCS assay may still be insufficient to allow
diagnosis of CMV infection early enough to prevent CMV disease in
patients following allogeneic SCT.
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
Evaluation of Murex CMV DNA Hybrid Capture Assay
for Detection and Quantitation of Cytomegalovirus Infection in Patients
following Allogeneic Stem Cell Transplantation
*
Corresponding author. Mailing address: Medizinische
Klinik und Poliklinik, Abteilung II, Otfried-Müller-Str.10,
D-72076 Tübingen, Germany. Phone: 0049 7071 2982712. Fax: 0049 7071 293179. E-mail: holger.hebart{at}uni-tuebingen.de.
Journal of Clinical Microbiology, May 1998, p. 1333-1337, Vol. 36, No. 5
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
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