1
|
Giacobbe DR, Marelli C, Mora S, Guastavino S, Russo C, Brucci G, Limongelli A, Vena A, Mikulska M, Tayefi M, Peluso S, Signori A, Di Biagio A, Marchese A, Campi C, Giacomini M, Bassetti M. Early diagnosis of candidemia with explainable machine learning on automatically extracted laboratory and microbiological data: results of the AUTO-CAND project. Ann Med 2023; 55:2285454. [PMID: 38010342 PMCID: PMC10836245 DOI: 10.1080/07853890.2023.2285454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 11/13/2023] [Indexed: 11/29/2023] Open
Abstract
BACKGROUND Candidemia is associated with a heavy burden of morbidity and mortality in hospitalized patients. The availability of blood culture results could require up to 48-72 h after blood draw; thus, early treatment decisions are made in the absence of a definite diagnosis. METHODS In this retrospective study, we assessed the performance of different supervised machine learning algorithms for the early differential diagnosis of candidemia and bacteremia in adult patients on a large dataset automatically extracted within the AUTO-CAND project. RESULTS Overall, 12,483 episodes of candidemia (1275; 10%) or bacteremia (11,208; 90%) were included in the analysis. A random forest classifier achieved the best diagnostic performance for candidemia, with sensitivity 0.98 and specificity 0.65 on the training set (true skill statistic [TSS] = 0.63) and sensitivity 0.74 and specificity 0.57 on the test set (TSS = 0.31). Then, the random classifier was trained in the subgroup of patients with available serum β-D-glucan (BDG) and procalcitonin (PCT) values by exploiting the feature ranking learned in the entire dataset. Although no statistically significant differences were observed from the performance measures obtained by employing BDG and PCT alone, the performance measures of the classifier that included the features selected in the entire dataset, plus BDG and PCT, were the highest in most cases. CONCLUSIONS Random forest classifiers trained on large datasets of automatically extracted data have the potential to improve current diagnostic algorithms for candidemia. However, further development through implementation of automatically extracted clinical features may be necessary to achieve crucial improvements.
Collapse
Affiliation(s)
- Daniele Roberto Giacobbe
- Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy
- Clinica Malattie Infettive, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Cristina Marelli
- Clinica Malattie Infettive, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Sara Mora
- Department of Informatics, Bioengineering, Robotics and System Engineering (DIBRIS), University of Genoa, Genoa, Italy
| | | | - Chiara Russo
- Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy
- Clinica Malattie Infettive, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Giorgia Brucci
- Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy
- Clinica Malattie Infettive, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Alessandro Limongelli
- Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy
- Clinica Malattie Infettive, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Antonio Vena
- Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy
- Clinica Malattie Infettive, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Malgorzata Mikulska
- Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy
- Clinica Malattie Infettive, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Maryam Tayefi
- Norwegian Centre for E-Health Research, Tromsø, Norway
| | - Stefano Peluso
- Department of Statistics and Quantitative Methods, University of Milan - Bicocca, Milan, Italy
| | - Alessio Signori
- Section of Biostatistics, Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy
| | - Antonio Di Biagio
- Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy
- Clinica Malattie Infettive, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Anna Marchese
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Genoa, Italy
- Microbiology Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Cristina Campi
- Department of Mathematics (DIMA), University of Genoa, Genoa, Italy
- Life Science Computational Laboratory (LISCOMP), IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Mauro Giacomini
- Department of Informatics, Bioengineering, Robotics and System Engineering (DIBRIS), University of Genoa, Genoa, Italy
| | - Matteo Bassetti
- Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy
- Clinica Malattie Infettive, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| |
Collapse
|
2
|
Validation of an Automated System for the Extraction of a Wide Dataset for Clinical Studies Aimed at Improving the Early Diagnosis of Candidemia. Diagnostics (Basel) 2023; 13:diagnostics13050961. [PMID: 36900105 PMCID: PMC10001256 DOI: 10.3390/diagnostics13050961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 02/26/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023] Open
Abstract
There is increasing interest in assessing whether machine learning (ML) techniques could further improve the early diagnosis of candidemia among patients with a consistent clinical picture. The objective of the present study is to validate the accuracy of a system for the automated extraction from a hospital laboratory software of a large number of features from candidemia and/or bacteremia episodes as the first phase of the AUTO-CAND project. The manual validation was performed on a representative and randomly extracted subset of episodes of candidemia and/or bacteremia. The manual validation of the random extraction of 381 episodes of candidemia and/or bacteremia, with automated organization in structured features of laboratory and microbiological data resulted in ≥99% correct extractions (with confidence interval < ±1%) for all variables. The final automatically extracted dataset consisted of 1338 episodes of candidemia (8%), 14,112 episodes of bacteremia (90%), and 302 episodes of mixed candidemia/bacteremia (2%). The final dataset will serve to assess the performance of different ML models for the early diagnosis of candidemia in the second phase of the AUTO-CAND project.
Collapse
|
3
|
Lu Y, Zhao Q, Zou J, Yan S, Tamaresis JS, Nelson L, Tu XM, Chen J, Tian L. A Composite Endpoint for Treatment Benefit According to Patient Preference. Stat Biopharm Res 2022; 14:408-422. [PMID: 37981982 PMCID: PMC10655937 DOI: 10.1080/19466315.2022.2085783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 05/20/2022] [Accepted: 05/25/2022] [Indexed: 10/18/2022]
Abstract
Complex disorders usually affect multiple symptom domains measured by several outcomes. The importance of these outcomes is often different among patients. Current approaches integrate multiple outcomes without considering patient preferences at the individual level. In this paper, we propose a new composite Desirability of Outcome Ranking (DOOR) that integrates individual level ranking of outcome importance and define a winning probability measuring the overall treatment effect. Stratified randomization can be performed based on the participants' baseline outcome rankings. A Wilcoxon-Mann-Whitney U-statistic is used to average the pairwise DOOR between one treated and one control patient, considering the difference in these patients' ranking of outcome importance. We use both theoretical and empirical methods to examine the statistical properties of our method and to compare with conventional approaches. We conclude that the proposed composite DOOR properly reflects patient-level preferences and can be used in pivotal trials or comparative effectiveness trials for a patient-centered evaluation of overall treatment benefits.
Collapse
Affiliation(s)
- Ying Lu
- Department of Biomedical Data Science, Stanford University School of Medicine
- Department of Epidemiology and Population Health, Stanford University School of Medicine
| | - Qian Zhao
- Department of Biomedical Data Science, Stanford University School of Medicine
- Department of Biostatistics, Guangzhou Medical University
| | - Jiying Zou
- Department of Statistics, Stanford University
| | - Shiyan Yan
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences
| | - John S. Tamaresis
- Department of Biomedical Data Science, Stanford University School of Medicine
| | - Lorene Nelson
- Department of Epidemiology and Population Health, Stanford University School of Medicine
| | - Xin M. Tu
- Department of Family Medicine and Health Sciences, University of California, San Diego
| | | | - Lu Tian
- Department of Biomedical Data Science, Stanford University School of Medicine
- Department of Statistics, Stanford University
| |
Collapse
|
4
|
Smoke SM, Patel VV, Leonida NI. The DOOR to Antibiotic Stewardship: Refining Assessments of Interventions With Desirability of Outcome Ranking. J Pharm Pract 2021; 35:403-406. [PMID: 33433251 DOI: 10.1177/0897190020987130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Limited sample size and disparate outcome measures can hinder the ability of antimicrobial stewardship programs to assess the utility of their quality improvement interventions. Desirability of outcome ranking (DOOR) is a novel methodology that incorporates multiple outcomes into a single value to more comprehensively compare therapeutic strategies. The objective of this study was to apply DOOR to a single center antibiotic stewardship intervention. METHODS A pre- and post-interventional study was conducted evaluating the impact of prospective pharmacist review of rapid molecular diagnostic testing (RDT) of blood cultures on antibiotic optimization. Outcomes included the percentage of patients who were switched to appropriate therapy, the time to appropriate therapy, and the percentage of patients who had missed de-escalation opportunities. RESULTS A total of 19 and 29 patients were included in the final analysis. The percentage of patients reaching appropriate therapy was 84% (16/19) and 97% ([28/29], p = 0.16) in the pre-intervention and post-intervention groups respectively. Median time to appropriate therapy was 26 hours and 36 minutes (IQR 13:05-50:45) and 22:40 (IQR 3:42-48:23, p = 0.32), respectively. One missed de-escalation opportunity was identified in the post-intervention group (0% vs 3%, p = 1.00). DOOR analysis indicated that the probability of a better outcome for the post-intervention group than the pre-intervention group was 58% (95% CI 54-62). CONCLUSION In this analysis, DOOR revealed a benefit that would not have been apparent with traditional outcomes assessments. Antimicrobial stewardship programs conducting quality improvement studies should consider incorporating DOOR into their methodology.
Collapse
Affiliation(s)
- Steven M Smoke
- Pharmacy Department, 23264Saint Barnabas Medical Center, Livingston, NJ, USA
| | - Vishal V Patel
- Pharmacy Department, 24051Community Medical Center, Toms River, NJ, USA
| | - Nicole I Leonida
- Pharmacy Department, 23264Jersey City Medical Center, Jersey City, NJ, USA
| |
Collapse
|
5
|
Bassetti M, Giacobbe DR, Peghin M, Irani P. A look at clinical trial design for new antimicrobials for the adult population. Expert Rev Clin Pharmacol 2019; 12:1037-1046. [PMID: 31607179 DOI: 10.1080/17512433.2019.1680283] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Introduction: Antimicrobial resistance poses a substantial threat to global public health since it decreases the probability of effectively treating an infection and increases the risk of morbidity and mortality.Areas covered: In this review, the authors discuss the advantages and disadvantages of classical and novel trial designs for evaluating novel antibiotics for infections due to multidrug-resistant organisms (MDRO). An inductive literature search was performed using different keywords pertinent to the reviewed topics.Expert opinion: The need for active, effective compounds has strengthened regulatory, academic, and industry cooperation, leading to the recent approval of some novel anti-MDRO agents, with other promising compounds being also in the late phase of clinical development. Nonetheless, some important issues regarding the design of clinical trials have gained importance that are peculiar for novel anti-MDRO agents and should be addressed for continuing to guarantee the availability of effective treatments in the future. Very importantly, concerted cooperation with regulatory agencies will always be needed for continuously discussing and refining the acceptable level of evidence to be pursued through non-conventional and/or innovative trial designs or development strategies. Failure to do so would seriously pose the risk of perpetuating the unmet need for effective anti-MDRO agents.
Collapse
Affiliation(s)
- Matteo Bassetti
- Clinica Malattie Infettive, Ospedale Policlinico San Martino - IRCCS, Genoa, Italy.,Department of Health Sciences, University of Genoa, Genoa, Italy
| | - Daniele Roberto Giacobbe
- Clinica Malattie Infettive, Ospedale Policlinico San Martino - IRCCS, Genoa, Italy.,Department of Health Sciences, University of Genoa, Genoa, Italy
| | - Maddalena Peghin
- Infectious Diseases Division, Department of Medicine University of Udine, Azienda Sanitaria Universitaria Integrata di Udine, Udine, Italy
| | - Paurus Irani
- Global Medical Affairs, Pfizer INC, New York, NY, USA
| |
Collapse
|
6
|
Bassetti M, Giacobbe DR, Vena A, Brink A. Challenges and research priorities to progress the impact of antimicrobial stewardship. Drugs Context 2019; 8:212600. [PMID: 31516534 PMCID: PMC6726362 DOI: 10.7573/dic.212600] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 07/16/2019] [Accepted: 07/19/2019] [Indexed: 02/06/2023] Open
Abstract
Antimicrobial stewardship programmes have been playing an important role in patient care and hospital policies. These programmes are now recognised as formal strategies for curbing the upward trend in antibiotic resistance and for improving the appropriate antimicrobial and antifungal use. The role of such programs in the era of antimicrobial resistance presents several unique challenges and opportunities, most notably in the diagnostic and therapeutic setting. Controversies remain regarding the most effective interventions and the appropriate design to evaluate their impact. In this review, based on rounds of discussion, we explain the most important challenges faced by antibiotic stewardship and antifungal stewardship programmes. We also try to suggest areas for further research.
Collapse
Affiliation(s)
- Matteo Bassetti
- Infectious Diseases Clinic, Department of Medicine, University of Udine, Italy.,Infectious Diseases Unit, Ospedale Policlinico San Martino - IRCCS per l'Oncologia, University of Genoa, Largo R. Benzi, 10, 16132, Genoa, Italy.,Department of Health Sciences, DISSAL, University of Genoa, Genoa, Italy
| | - Daniele Roberto Giacobbe
- Infectious Diseases Unit, Ospedale Policlinico San Martino - IRCCS per l'Oncologia, University of Genoa, Largo R. Benzi, 10, 16132, Genoa, Italy.,Department of Health Sciences, DISSAL, University of Genoa, Genoa, Italy
| | - Antonio Vena
- Infectious Diseases Clinic, Department of Medicine, University of Udine, Italy
| | - Adrian Brink
- Division of Medical Microbiology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| |
Collapse
|
7
|
Giacobbe DR, Signori A. Interpreting desirability of outcome ranking (DOOR) analyses in observational studies in infectious diseases: caution still needed. Eur J Clin Microbiol Infect Dis 2019; 38:1985-1986. [DOI: 10.1007/s10096-019-03612-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 06/10/2019] [Indexed: 11/30/2022]
|
8
|
Pons S, Timsit JF, Ruckly S, Schwebel C, Papazian L, Azoulay E, Reignier J, Zafrani L. Impact of macrolide therapy in critically ill patients with acute respiratory failure: a desirability of outcome ranking analysis to investigate the OUTCOMEREA database. Intensive Care Med 2019; 45:1043-1045. [PMID: 30874823 DOI: 10.1007/s00134-019-05586-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/26/2019] [Indexed: 10/27/2022]
Affiliation(s)
- Stéphanie Pons
- INSERM U976, Saint-Louis University Hospital, Paris, France
| | - Jean-François Timsit
- Infectious and Medical Intensive Care Unit, Bichat Claude-Bernard University Hospital, Paris, France.,INSERM IAME, U1137, Team DesCID, Paris, France
| | | | - Carole Schwebel
- Polyvalent Intensive Care Unit, Grenoble University Hospital, Grenoble, France
| | - Laurent Papazian
- Respiratory and Infectious Diseases Intensive Care Unit, North University Hospital, Marseille, France
| | - Elie Azoulay
- Medical Intensive Care Unit, Saint-Louis Hospital, 1, Avenue Claude Vellefaux, 75010, Paris, France
| | - Jean Reignier
- Medical Intensive Care Unit, Nantes University Hospital Center, Nantes, France
| | - Lara Zafrani
- INSERM U976, Saint-Louis University Hospital, Paris, France. .,Medical Intensive Care Unit, Saint-Louis Hospital, 1, Avenue Claude Vellefaux, 75010, Paris, France.
| |
Collapse
|
9
|
Giacobbe DR, Corcione S, Salsano A, Del Puente F, Mornese Pinna S, De Rosa FG, Mikulska M, Santini F, Viscoli C. Current and emerging pharmacotherapy for the treatment of infections following open-heart surgery. Expert Opin Pharmacother 2019; 20:751-772. [PMID: 30785333 DOI: 10.1080/14656566.2019.1574753] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Patients undergoing open-heart surgery may suffer from postoperative complications, including severe infections. Antimicrobials to treat infectious complications in this population should be selected thoughtfully, taking into account three different and fundamental issues: (i) the site of infection; (ii) the suspected or proven causative agent and its susceptibility pattern; and (iii) the risk of suboptimal pharmacokinetic characteristics and potential toxicity of the chosen drug/s. AREAS COVERED The present narrative review summarizes the current and future antimicrobial options for the treatment of infections developing after open-heart surgery. EXPERT OPINION The pharmacological treatment of infections developing in cardiac surgery patients poses peculiar challenges, including the need for an active empirical therapy for severe events such as bloodstream infections, deep sternal wound infections, or early-onset postoperative prosthetic endocarditis. In addition, the risk for multidrug-resistant pathogens should also be taken into account in endemic areas. A multidisciplinary evaluation on a patient-by-patient basis, deeply involving infectious diseases specialists and cardiothoracic surgeons, remains essential for appropriately balancing both short-term and long-term risks and benefits of any possible surgical reintervention in combination with adequate pharmacotherapy.
Collapse
Affiliation(s)
| | - Silvia Corcione
- b Department of Medical Sciences, Infectious Diseases , University of Turin , Turin , Italy
| | - Antonio Salsano
- c Division of Cardiac Surgery, Dipartimento di Scienze Chirurgiche e Diagnostiche Integrate (DISC) , University of Genoa , Genoa , Italy.,d Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Ospedale Policlinico San Martino , Genoa , Italy
| | - Filippo Del Puente
- a Dipartimento di Scienze della Salute (DISSAL) , University of Genoa , Genoa , Italy
| | - Simone Mornese Pinna
- b Department of Medical Sciences, Infectious Diseases , University of Turin , Turin , Italy
| | | | - Malgorzata Mikulska
- a Dipartimento di Scienze della Salute (DISSAL) , University of Genoa , Genoa , Italy.,d Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Ospedale Policlinico San Martino , Genoa , Italy
| | - Francesco Santini
- c Division of Cardiac Surgery, Dipartimento di Scienze Chirurgiche e Diagnostiche Integrate (DISC) , University of Genoa , Genoa , Italy.,d Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Ospedale Policlinico San Martino , Genoa , Italy
| | - Claudio Viscoli
- a Dipartimento di Scienze della Salute (DISSAL) , University of Genoa , Genoa , Italy.,d Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Ospedale Policlinico San Martino , Genoa , Italy
| |
Collapse
|