Dataset Information

First Draft Genome Sequence of the Pathogenic Fungus Lomentospora prolificans (Formerly Scedosporium prolificans).

ABSTRACT: Here we describe the sequencing and assembly of the pathogenic fungus Lomentospora prolificans using a combination of short, highly accurate Illumina reads and additional coverage in very long Oxford Nanopore reads. The resulting assembly is highly contiguous, containing a total of 37,627,092 bp with over 98% of the sequence in just 26 scaffolds. Annotation identified 8896 protein-coding genes. Pulsed-field gel analysis suggests that this organism contains at least 7 and possibly 11 chromosomes, the two longest of which have sizes corresponding closely to the sizes of the longest scaffolds, at 6.6 and 5.7 Mb.

SUBMITTER: Luo R

PROVIDER: S-EPMC5677167 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature

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Publications

First Draft Genome Sequence of the Pathogenic Fungus Lomentospora prolificans (Formerly Scedosporium prolificans).

Luo Ruibang R Zimin Aleksey A Workman Rachael R Fan Yunfan Y Pertea Geo G Grossman Nina N Wear Maggie P MP Jia Bei B Miller Heather H Casadevall Arturo A Timp Winston W Zhang Sean X SX Salzberg Steven L SL

G3 (Bethesda, Md.) 20171106 11

Here we describe the sequencing and assembly of the pathogenic fungus Lomentospora prolificans using a combination of short, highly accurate Illumina reads and additional coverage in very long Oxford Nanopore reads. The resulting assembly is highly contiguous, containing a total of 37,627,092 bp with over 98% of the sequence in just 26 scaffolds. Annotation identified 8896 protein-coding genes. Pulsed-field gel analysis suggests that this organism contains at least 7 and possibly 11 chrom ...[more]

PMID: 28963165

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Project description:BackgroundManagement of Scedosporium/Lomentospora prolificans infections remains challenging. We described predisposing factors, clinical manifestations, and outcomes of these rare mold infections, including predictors of early (1-month) and late (18-month) all-cause mortality and treatment failure.MethodsWe conducted a retrospective Australian-based observational study of proven/probable Scedosporium/L prolificans infections from 2005 to 2021. Data on patient comorbidities, predisposing factors, clinical manifestations, treatment, and outcomes up to 18 months were collected. Treatment responses and death causality were adjudicated. Subgroup analyses, multivariable Cox regression, and logistic regression were performed.ResultsOf 61 infection episodes, 37 (60.7%) were attributable to L prolificans. Forty-five of 61 (73.8%) were proven invasive fungal diseases (IFDs), and 29 of 61 (47.5%) were disseminated. Prolonged neutropenia and receipt of immunosuppressant agents were documented in 27 of 61 (44.3%) and 49 of 61 (80.3%) episodes, respectively. Voriconazole/terbinafine was administered in 30 of 31 (96.8%) L prolificans infections, and voriconazole alone was prescribed for 15 of 24 (62.5%) Scedosporium spp infections. Adjunctive surgery was performed in 27 of 61 (44.3%) episodes. Median time to death post-IFD diagnosis was 9.0 days, and only 22 of 61 (36.1%) attained treatment success at 18 months. Those who survived beyond 28 days of antifungal therapy were less immunosuppressed with fewer disseminated infections (both P < .001). Disseminated infection and hematopoietic stem cell transplant were associated with increased early and late mortality rates. Adjunctive surgery was associated with lower early and late mortality rates by 84.0% and 72.0%, respectively, and decreased odds of 1-month treatment failure by 87.0%.ConclusionsOutcomes associated with Scedosporium/L prolificans infections is poor, particularly with L prolificans infections or in the highly immunosuppressed population.

Dataset Information

First Draft Genome Sequence of the Pathogenic Fungus Lomentospora prolificans (Formerly Scedosporium prolificans).

Publications

First Draft Genome Sequence of the Pathogenic Fungus <i>Lomentospora prolificans</i> (Formerly <i>Scedosporium prolificans</i>).

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