Impact of Changes of the 2020 Consensus Definitions of Invasive Aspergillosis on Clinical Trial Design: Unintended Consequences for Prevention Trials?

dc.contributor.author

Wingard, John R

dc.contributor.author

Alexander, Barbara D

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Baden, Lindsey R

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Chen, Min

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Sugrue, Michele W

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Leather, Helen L

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Caliendo, Angela M

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Clancy, Cornelius J

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Denning, David W

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Marty, Francisco M

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Nguyen, M Hong

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Wheat, L Joseph

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Logan, Brent R

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Horowitz, Mary M

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Marr, Kieren A

dc.date.accessioned

2022-10-03T11:04:59Z

dc.date.available

2022-10-03T11:04:59Z

dc.date.issued

2021-10

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2022-10-03T11:04:59Z

dc.description.abstract

Background

Consensus definitions for the diagnosis of invasive fungal diseases (IFDs) were updated in 2020 to increase the certainty of IFD for inclusion in clinical trials, for instance by increasing biomarker cutoff limits to define positivity. To date, there is a paucity of data as to the impact of the revised definitions on clinical trials.

Methods

In this study, we sought to determine the impact of the new definitions on classifying invasive aspergillosis (IA), the most common invasive mold disease in immunocompromised patients. We reclassified 226 proven and probable IA cases plus 139 possible IFD cases in the Aspergillus Technology Consortium (AsTeC) and in an antifungal prophylaxis trial (BMT CTN 0101) using the new criteria.

Results

Fewer cases met the more stringent diagnostic 2020 criteria after applying the reclassification criteria to define probable IA. Of 188 evaluable probable cases, 41 (22%) were reclassified to 40 possible IA and 1 probable IFD. Reclassification to possible IFD occurred in 22% of hematologic malignancy (HM) patients, 29% of hematopoietic cell transplant (HCT) patients, and in no lung transplant (LT) patients. Date of diagnosis was established a median (range) of 3 (1-105) days later in 15% of probable IA cases using the new criteria. Applying the new definitions to the BMT CTN 0101 trial, the power to detect the same odds ratio decreased substantially.

Conclusions

The updated IA consensus definitions may impact future trial designs, especially for antifungal prophylaxis studies.
dc.identifier

ofab441

dc.identifier.issn

2328-8957

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2328-8957

dc.identifier.uri

https://hdl.handle.net/10161/26026

dc.language

eng

dc.publisher

Oxford University Press (OUP)

dc.relation.ispartof

Open forum infectious diseases

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10.1093/ofid/ofab441

dc.subject

antifungal clinical trials

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antifungal prophylaxis

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antifungal treatment

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invasive aspergillosis

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invasive fungal diseases

dc.title

Impact of Changes of the 2020 Consensus Definitions of Invasive Aspergillosis on Clinical Trial Design: Unintended Consequences for Prevention Trials?

dc.type

Journal article

duke.contributor.orcid

Alexander, Barbara D|0000-0001-5868-0529

pubs.begin-page

ofab441

pubs.issue

10

pubs.organisational-group

Duke

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School of Medicine

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Clinical Science Departments

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Medicine

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Pathology

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Medicine, Infectious Diseases

pubs.publication-status

Published

pubs.volume

8

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