Aspergillus PCR testing: results from a prospective PCR study within the AmBiLoad trial
Objectives: Invasive fungal infection (IFI) is a major cause of morbidity and mortality in severely immunocompromised patients and is difficult to diagnose. The significance of molecular methods for diagnosis of IFI is still controversial. In a subset of patients treated within the AmBiLoad Trial, s...
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| Hauptverfasser: | , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
[August 2010]
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| In: |
European journal of haematology
Year: 2010, Jahrgang: 85, Heft: 2, Pages: 164-169 |
| ISSN: | 1600-0609 |
| DOI: | 10.1111/j.1600-0609.2010.01452.x |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1111/j.1600-0609.2010.01452.x Verlag, lizenzpflichtig, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1600-0609.2010.01452.x 
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| Verfasserangaben: | Margit Hummel, Birgit Spiess, Oliver A. Cornely, Martin Dittmer, Handan Mörz, Dieter Buchheidt |
MARC
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| 245 | 1 | 0 | |a Aspergillus PCR testing |b results from a prospective PCR study within the AmBiLoad trial |c Margit Hummel, Birgit Spiess, Oliver A. Cornely, Martin Dittmer, Handan Mörz, Dieter Buchheidt |
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| 520 | |a Objectives: Invasive fungal infection (IFI) is a major cause of morbidity and mortality in severely immunocompromised patients and is difficult to diagnose. The significance of molecular methods for diagnosis of IFI is still controversial. In a subset of patients treated within the AmBiLoad Trial, samples were investigated prospectively by a nested Aspergillus PCR assay to re-evaluate the significance of PCR in this setting. Patients and methods: In the randomized, prospective multicenter AmBiLoad trial, patients with proven or probable IFI were randomized to receive liposomal amphotericin B (L-AMB) 3 or 10 mg/kg QD for 14 d followed by L-AMB 3 mg/kg QD. From 91 patients, 459 serial samples (98% blood samples) were investigated by a nested PCR assay for Aspergillus DNA. All samples were investigated in our laboratory with a previously described nested and a quantitative PCR assay. As required by the study protocol, serial Aspergillus antigen galactomannan was performed. IFI was defined according to modified EORTC/MSG 2002 criteria as applied in the AmBiLoad trial. Results: Seven and 52 patients had proven and probable IFI according to modified EORTC/MSG criteria, respectively. The median number of samples investigated per patient was 4. Seventy percent of samples were obtained during treatment with antifungal study medication. Forty-three samples gave positive PCR results. Patients with an unfavorable outcome had a significantly higher rate of positive PCR results (48% versus 21%). Conclusions: The sensitivity of Aspergillus PCR testing is limited during antifungal therapy. The tendency for persistently positive PCR results to indicate a poor prognosis has to be confirmed in further studies. | ||
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