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[av_heading heading=’VALUE-Dx developed sample collection and management manuals for trials’ tag=’h3′ link_apply=” link=’manually,http://’ link_target=” style=’blockquote modern-quote modern-centered’ size=” subheading_active=’subheading_below’ subheading_size=’15’ margin=” margin_sync=’true’ padding=’10’ color=” custom_font=” av-medium-font-size-title=” av-small-font-size-title=” av-mini-font-size-title=” av-medium-font-size=” av-small-font-size=” av-mini-font-size=” av_uid=’av-kmq561dk’ custom_class=” admin_preview_bg=”][/av_heading]
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WP2 has been working on the set-up of the VALUE-Dx biobank and continuing the optimisation of the protocols in preparation for the imminent start of WP4 clinical trials.
Thanks to the expertise of LAB-Net members, the sample collection and management manuals for both trials have been developed. These manuals describe in depth how to collect samples for the microbiology sub-studies and how to process and store them until shipment to the VALUE-Dx UA/UZA biobank in Antwerp. Additionally, the preparation of kits to be sent to the sites for the sample collection has begun, starting with kits to store the leftover samples from the diagnostic intervention implemented in the paediatric arm of the ADEQUATE trial.
Regarding the optimisation of metagenomics protocols, the focus has been on the bioinformatics protocols that will be used to analyse the generated shotgun metagenomics data, as the wet lab protocols for sequencing are optimised for Illumina and PacBio. The pipeline will include tools for quality control and host reads removal, after which taxonomical classification, functional characterisation and assemblies will be performed. Furthermore, antimicrobial resistance genes and mutations will be studied with different tools, and S. pneumoniae serotypes will be identified if present in the sample. Validation of this pipeline is being done in shotgun metagenomics data from other studies, and will be further extended with a metagenome reconstruction step implemented by Bioaster.
Concerning the biomarker sub-studies, specific manuals for sample collection and processing have been developed. These manuals describe how to collect, process and store plasma (EDTA and heparin) and RNA samples prior to their shipment to the UA/UZA biobank in Antwerp. The kits required for blood collection and processing are being assembled for their subsequent use in the PRUDENCE trial. Additionally, the cytokine and chemokine analysis is being optimised, starting with the selection of the most relevant and promising biomarkers. Cytokine and chemokine panels are currently being designed. Also, we tested and recommended a double-spin plasma separation protocol to be utilised within the PRUDENCE trial, which will improve the quality of collected samples.
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Good data management is extremely important in clinical research and in the fight against AMR. All relevant data, from diagnostic test results to patient records, must be available and collected from various sources and systems in a timely, accurate and efficient manner. Next to that it needs to be able to be shared with concerned stakeholders, in a standardized and easily accessible way.



In the antimicrobial resistance (AMR) field, we currently lack a comprehensive overview with accurate information about available resources and services, where to find them, how they compare to one another, and ways to assess their fitness for reuse in new research. To close this gap, the international consortia JPIAMR and VALUE-Dx bundled their strengths and set out a survey with the ultimate aim to get an overview of existing resources and services that are relevant for AMR research and development. The overview could become a central source of information, ready to take up information on future resources and services as well.
Within VALUE-Dx,
The invention of antimicrobials was a major breakthrough in medical science that saved millions of lives. Antimicrobials are used to treat illness caused by bacteria. Development of these medicines meant that illnesses, like pneumonia, which were once often fatal, could now usually be successfully treated. But effectiveness of antimicrobials is now decreasing because they are being overused.


VALUE-Dx is working on identifying the optimal tests that can diagnose reliably all patients with specific Community-Acquired Acute Respiratory Tract Infections (CA-ARTIs). WP1 conducted a systematic review and meta-analysis of point-of-care diagnostic test accuracy (DTA) for CA-ARTI including Rapid Antigen Detection Technique (RADTs), Nucleic acids amplification tests, imaging techniques, signs and symptoms, and host biomarkers. The performance of several pathogen-based RADTs to define the aetiology of CA-ARTI was investigated. Influenza virus, Respiratory Syncytial virus (RSV) and group A Streptococcus (GAS) RADTs showed a good DTA with an AUC >80%. Sensitivity and specificity differed depending on patient population (children and adults), brand name and test type; in particular, immunochromatographic assays were the most represented with a high DTA (AUC >87%). No significant heterogeneity rises for subgroup analysis by type of setting (community care, ED, LCTF). PCR tests proved very useful to exclude the diagnosis of CA-ARTIs with a very good sensitivity (80-98%) and high specificity (94-99%) and to reduce inappropriate antibiotic usage. Lung ultrasound showed also excellent diagnostic efficiency tool for the diagnosis of bacterial CAP (AUC 94%).