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Antifungal Activity of Isavuconazole and Comparator Agents against Contemporaneous Mucorales Isolates from USA, Europe, and Asia-Pacific. J Fungi (Basel) 2023; 9:jof9020241. [PMID: 36836355 PMCID: PMC9960003 DOI: 10.3390/jof9020241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/30/2023] [Accepted: 02/08/2023] [Indexed: 02/15/2023] Open
Abstract
Isavuconazole is the only US FDA-approved antifungal for treating invasive mucormycosis. We evaluated isavuconazole activity against a global collection of Mucorales isolates. Fifty-two isolates were collected during 2017-2020 from hospitals located in the USA, Europe, and the Asia-Pacific. Isolates were identified by MALDI-TOF MS and/or DNA sequencing and susceptibility tested by the broth microdilution method following CLSI guidelines. Isavuconazole (MIC50/90, 2/>8 mg/L) inhibited 59.6% and 71.2% of all Mucorales isolates at ≤2 mg/L and ≤4 mg/L, respectively. Among comparators, amphotericin B (MIC50/90, 0.5/1 mg/L) displayed the highest activity, followed by posaconazole (MIC50/90, 0.5/8 mg/L). Voriconazole (MIC50/90, >8/>8 mg/L) and the echinocandins (MIC50/90, >4/>4 mg/L) had limited activity against Mucorales isolates. Isavuconazole activity varied by species and this agent inhibited at ≤4 mg/L 85.2%, 72.7%, and 25% of Rhizopus spp. (n = 27; MIC50/90, 1/>8 mg/L), Lichtheimia spp. (n = 11; MIC50/90, 4/8 mg/L), and Mucor spp. (n = 8; MIC50, >8 mg/L) isolates, respectively. Posaconazole MIC50/90 values against Rhizopus, Lichtheimia, and Mucor species were 0.5/8 mg/L, 0.5/1 mg/L, and 2/- mg/L, respectively; amphotericin B MIC50/90 values were 1/1 mg/L, 0.5/1 mg/L, and 0.5/- mg/L, respectively. As susceptibility profiles varied among Mucorales genera, species identification and antifungal susceptibility testing are advised whenever possible to manage and monitor mucormycosis.
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Ralaizanaka BM, Razafindrazoto CI, Bolot E, Bors G, Housson-Wetzel S, Razafimahefa SH, Ramanampamonjy RM, Claude P. Gastrointestinal Mucormycosis-Induced Massive Lower Gastrointestinal Bleeding, Rectal Perforation, and Pulmonary Embolism: A Long Diagnostic Pathway in a Case Report. Clin Exp Gastroenterol 2022; 15:145-151. [PMID: 35983373 PMCID: PMC9381012 DOI: 10.2147/ceg.s373728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 08/09/2022] [Indexed: 11/23/2022] Open
Abstract
Introduction Mucormycosis is a rare systemic fungal infection, mainly observed in immunocompromised patients. It is responsible for surface and deep tissue destruction leading to perforations and hemorrhage. Its pathogenesis represented by an angio-invasion is at the origin of a local infarction and a vascular thrombosis. We report a case of gastrointestinal (GI) mucormycosis-induced multiple gastric ulcers, GI bleeding and rectal perforation. Case Presentation A 75-year-old man, with type II diabetes mellitus, was admitted to the intensive care unit for an acute abdominal pain associated with massive hematochezia. Clinical examination was that of an acute peritonitis and a hemorrhagic shock state. Abdominal and pelvic CT scan with intravenous contrast concluded to a perforation of the anterior wall of the rectum. He underwent immediate laparotomy with temporary colostomy. Several upper GI endoscopies had shown multiple gastric ulcer lesions. Lower GI endoscopy showed a fistulous orifice of the rectum on its anterior surface. Histopathology of the gastric biopsy showed acute and subacute inflammatory changes with filamentous elements suggesting mucormycosis. Histopathology of the rectal biopsy showed a subacute non-specific inflammation. Culture of the secretions from the rectal fistula orifice showed the strain Rhizopus sp. Antifungal susceptibility testing reported sensitivity to liposomal amphotericin B. The diagnosis of GI mucormycosis-induced multiple gastric ulcers, rectal perforation and pulmonary embolism in the patient with type II diabetes mellitus was retained. The outcomes were favorable after 6 weeks of treatment with liposomal amphotericin B associated with temporary colostomy and appropriate diabetes management. Conclusion GI mucormycosis remains a multidisciplinary diagnostic challenge, less frequent in clinical practice, with a long diagnostic pathway. This opportunistic systemic mycosis can lead to numerous GI complications including perforation, massive GI bleeding and even multiple extra-GI complications. GI mucormycosis has a good prognosis if it is treated early with medical and surgical treatment.
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Affiliation(s)
| | | | - Eloïse Bolot
- Unity of Gastroenterology, Emile Müller Hospital of Regional Hospital Group of Mulhouse South Alsace, Mulhouse, France
| | - Georges Bors
- Unity of Gastroenterology, Emile Müller Hospital of Regional Hospital Group of Mulhouse South Alsace, Mulhouse, France
| | - Stéphanie Housson-Wetzel
- Unity of Gastroenterology, Emile Müller Hospital of Regional Hospital Group of Mulhouse South Alsace, Mulhouse, France
| | | | | | - Pierre Claude
- Unity of Gastroenterology, Emile Müller Hospital of Regional Hospital Group of Mulhouse South Alsace, Mulhouse, France
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COVID-19-Associated Mucormycosis: A Matter of Concern Amid the SARS-CoV-2 Pandemic. Vaccines (Basel) 2022; 10:vaccines10081266. [PMID: 36016154 PMCID: PMC9415927 DOI: 10.3390/vaccines10081266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 08/04/2022] [Accepted: 08/05/2022] [Indexed: 12/16/2022] Open
Abstract
Mucormycosis is an invasive fungal infection caused by fungi belonging to order Mucorales. Recently, with the increase in COVID-19 infections, mucormycosis infections have become a matter of concern globally, because of the high morbidity and mortality rates associated with them. Due to the association of mucormycosis with COVID-19 disease, it has been termed COVID-19-associated mucormycosis (CAM). In the present review, we focus on mucormycosis incidence, pathophysiology, risk factors, immune dysfunction, interactions of Mucorales with endothelial cells, and the possible role of iron in Mucorales growth. We review the limitations associated with current diagnostic procedures and the requirement for more specific, cost-effective, convenient, and sensitive assays, such as PCR-based assays and monoclonal antibody-based assays for the effective diagnosis of mucormycosis. We discuss the current treatment options involving antifungal drug therapies, adjunctive therapy, surgical treatment, and their limitations. We also review the importance of nutraceuticals-based therapy for the prevention as well as treatment of mucormycosis. Our review also highlights the need to explore the potential of novel immunotherapeutics, which include antibody-based therapy, cytokine-based therapy, and combination/synergistic antifungal therapy, as treatment options for mucormycosis. In summary, this review provides a complete overview of COVID-19-associated mucormycosis, addressing the current research gaps and future developments required in the field.
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In Vitro Antifungal Drug Resistance Profiles of Clinically Relevant Members of the Mucorales (Mucoromycota) Especially with the Newer Triazoles. J Fungi (Basel) 2021; 7:jof7040271. [PMID: 33918216 PMCID: PMC8065934 DOI: 10.3390/jof7040271] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/25/2021] [Accepted: 03/31/2021] [Indexed: 12/23/2022] Open
Abstract
Mucoromycoses (infections caused by members of the order Mucorales, phylum Mucoromycota [ex-Zygomycota]) are highly destructive, rapidly progressive infections, with dire prognoses especially when they occur in immunocompromised hosts. Current treatment guidelines recommend liposomal formulations of amphotericin B with adjunctive surgery as first line therapy, with the newer triazoles posaconazole or isavuconazole as alternative treatments, or as salvage therapy. Among the many organisms belonging to this order, a limited number of species in the genera Rhizopus, Mucor, Lichtheimia and Rhizomucor are responsible for most cases of human infection. Here, we present the minimum inhibitory concentration data (MICs) for amphotericin B, posaconazole, isavuconazole, itraconazole and voriconazole with a panel of over 300 isolates of the five most common agents of human infection (Lichtheimia corymbifera, Rhizopus arrhizus, R. microsporus, Rhizomucor pusillus and Mucor spp.) determined using the CLSI broth microdilution method. In agreement with previous studies, the most active antifungal drug for all Mucorales was amphotericin B, with MICs within the range that would predict susceptibility with Aspergillus fumigatus. Conversely, MICs for voriconazole against all species tested were high, and above the range associated with clinical efficacy with A. fumigatus. Interestingly, whilst isavuconazole and posaconazole MIC distributions indicated in vitro activity against some members of the Mucorales, activity was species-dependent for both agents. These data underscore the importance of accurate identification of the causative agents of mucoromycosis, coupled with antifungal susceptibility testing of individual isolates, in determining the optimal treatment of infections caused by these aggressive opportunistic human fungal pathogens.
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Heydari S, Habibi D, Reza Faraji A, keypour H, Mahmoudabadi M. An overview on the progress and development on the palladium catalyzed direct cyanation. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.119956] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Salmanton-García J, Seidel D, Koehler P, Mellinghoff SC, Herbrecht R, Klimko N, Ráčil Z, Falces-Romero I, Ingram P, Benítez-Peñuela MÁ, Rodríguez JY, Desoubeaux G, Barać A, García-Vidal C, Hoenigl M, Mehta SR, Cheng MP, Klyasova G, Heinz WJ, Iqbal N, Krause R, Ostermann H, Penack O, Schalk E, Sheppard DC, Willinger B, Wisplinghoff H, Vehreschild JJ, Cornely OA, Vehreschild MJGT. Matched-paired analysis of patients treated for invasive mucormycosis: standard treatment versus posaconazole new formulations (MoveOn). J Antimicrob Chemother 2020; 74:3315-3327. [PMID: 31393591 DOI: 10.1093/jac/dkz344] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 07/04/2019] [Accepted: 07/09/2019] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND First-line antifungal treatment for invasive mucormycosis (IM) consists of liposomal amphotericin B. Salvage treatment options are limited and often based on posaconazole oral suspension. With the approval of posaconazole new formulations, patients could benefit from improved pharmacokinetics, safety and tolerability. OBJECTIVES Our aim was to assess the effectiveness of posaconazole new formulations for IM treatment. METHODS We performed a case-matched analysis with proven or probable IM patients from the FungiScope® Registry. First-line posaconazole new formulations (1st-POSnew) and first-line amphotericin B plus posaconazole new formulations (1st-AMB+POSnew) cases were matched with first-line amphotericin B-based (1st-AMB) treatment controls. Salvage posaconazole new formulations (SAL-POSnew) cases were matched with salvage posaconazole oral suspension (SAL-POSsusp) controls. Each case was matched with up to three controls (based on severity, haematological/oncological malignancy, surgery and/or renal dysfunction). RESULTS Five patients receiving 1st-POSnew, 18 receiving 1st-AMB+POSnew and 22 receiving SAL-POSnew were identified. By day 42, a favourable response was reported for 80.0% (n = 4/5) of patients receiving 1st-POSnew, for 27.8% (n = 5/18) receiving 1st-AMB+POSnew and for 50.0% (n = 11/22) receiving SAL-POSnew. Day 42 all-cause mortality of patients receiving posaconazole new formulations was lower compared with controls [20.0% (n = 1/5) in 1st-POSnew versus 53.3% (n = 8/15) in 1st-AMB; 33.3% (n = 6/18) in 1st-AMB+POSnew versus 52.0% (n = 26/50) in 1st-AMB; and 0.0% (n = 0/22) in SAL-POSnew versus 4.4% (n = 2/45) in SAL-POSsusp]. CONCLUSIONS Posaconazole new formulations were effective in terms of treatment response and associated mortality of IM. While posaconazole new formulations may be an alternative for treatment of IM, the limited sample size of our study calls for a cautious interpretation of these observations.
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Affiliation(s)
- Jon Salmanton-García
- University of Cologne, Faculty of Medicine and University Hospital of Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf (CIO ABCD), European Diamond Excellence Center for Medical Mycology (ECMM), Cologne, Germany
| | - Danila Seidel
- University of Cologne, Faculty of Medicine and University Hospital of Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf (CIO ABCD), European Diamond Excellence Center for Medical Mycology (ECMM), Cologne, Germany.,Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Philipp Koehler
- University of Cologne, Faculty of Medicine and University Hospital of Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf (CIO ABCD), European Diamond Excellence Center for Medical Mycology (ECMM), Cologne, Germany.,Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Sibylle C Mellinghoff
- University of Cologne, Faculty of Medicine and University Hospital of Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf (CIO ABCD), European Diamond Excellence Center for Medical Mycology (ECMM), Cologne, Germany
| | - Raoul Herbrecht
- Department of Oncology and Hematology, Hôpitaux Universitaires de Strasbourg and Université de Strasbourg, Inserm, UMR-S1113/IRFAC, Strasbourg, France
| | - Nikolai Klimko
- Department of Clinical Mycology, Allergy and Immunology, North Western State Medical University, Saint Petersburg, Russia
| | - Zdeněk Ráčil
- Department of Internal Medicine-Hematology and Oncology, Masaryk University, Brno, Czech Republic.,University Hospital Brno, Brno, Czech Republic
| | - Iker Falces-Romero
- Clinical Microbiology and Parasitology Department, University Hospital La Paz, Madrid, Spain
| | - Paul Ingram
- Department of Infectious Diseases, Royal Perth Hospital, Perth, WA, Australia.,School of Pathology and Laboratory Medicine, University of Western Australia, Perth, WA, Australia
| | - Miguel-Ángel Benítez-Peñuela
- Center of Microbiological Research of Cesar (CIMCE), Rosario Pumarejo de López Hospital, Laura Daniela Clinic, Médicos Clinic LTDA, Valledupar, Colombia
| | - José Yesid Rodríguez
- Center of Microbiological Research of Cesar (CIMCE), Rosario Pumarejo de López Hospital, Laura Daniela Clinic, Médicos Clinic LTDA, Valledupar, Colombia
| | - Guillaume Desoubeaux
- Parasitology, Mycology and Tropical Medicine Service, University Hospital of Tours, Tours, France.,Inserm U1100, Tours University, Tours, France
| | - Aleksandra Barać
- Clinic for Infectious and Tropical Diseases, Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, Serbia
| | - Carolina García-Vidal
- Service of Infectious Diseases, Clínic Hospital, University of Barcelona, Institute of Biomedical Research August Pi i Sunyer, Barcelona, Spain
| | - Martin Hoenigl
- Division of Infectious Diseases, University of California San Diego, San Diego, CA, USA.,Section of Infectious Diseases and Tropical Medicine, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Sanjay R Mehta
- Division of Infectious Diseases, University of California San Diego, San Diego, CA, USA.,Department of Medicine, San Diego Veterans Affairs Medical Center San Diego, CA, USA
| | - Matthew P Cheng
- Division of Infectious Diseases, Departments of Medicine, Microbiology and Immunology, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Galina Klyasova
- Department of Clinical Microbiology, Mycology and Antibiotic Therapy, National Research Center for Hematology, Moscow, Russia
| | - Werner J Heinz
- Department of Internal Medicine II, Julius Maximilians University, Würzburg, Germany
| | - Nousheen Iqbal
- Section of Pulmonology and Critical Care, Department of Medicine, Aga Khan University Hospital, Karachi, Pakistan
| | - Robert Krause
- Section of Infectious Diseases and Tropical Medicine, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Helmut Ostermann
- Department of Internal Medicine III, University of Munich, Munich, Germany
| | - Olaf Penack
- Department for Hematology, Oncology and Tumorimmunology, Charité University Medicine Berlin, Campus Virchow Clinic, Berlin, Germany
| | - Enrico Schalk
- Department of Haematology and Oncology, Medical Centre, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Donald C Sheppard
- Division of Infectious Diseases, Departments of Medicine, Microbiology and Immunology, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Birgit Willinger
- Division of Clinical Microbiology, Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Hilmar Wisplinghoff
- University of Cologne, Institute for Medical Microbiology, Immunology and Hygiene, Cologne, Germany.,Wisplinghoff Laboratories, Cologne, Germany.,Institute for Virology and Clinical Microbiology, Witten/Herdecke University, Witten, Germany
| | - J Janne Vehreschild
- University of Cologne, Faculty of Medicine and University Hospital of Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf (CIO ABCD), European Diamond Excellence Center for Medical Mycology (ECMM), Cologne, Germany.,German Centre for Infection Research (DZIF), partner site Bonn - Cologne, Cologne, Germany.,Center for Integrated Oncology CIO Köln/Bonn, Medical Faculty, University of Cologne, Cologne, Germany
| | - Oliver A Cornely
- University of Cologne, Faculty of Medicine and University Hospital of Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf (CIO ABCD), European Diamond Excellence Center for Medical Mycology (ECMM), Cologne, Germany.,Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.,German Centre for Infection Research (DZIF), partner site Bonn - Cologne, Cologne, Germany.,Center for Integrated Oncology CIO Köln/Bonn, Medical Faculty, University of Cologne, Cologne, Germany.,Clinical Trials Centre Cologne (ZKS Köln), University of Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | - Maria J G T Vehreschild
- University of Cologne, Faculty of Medicine and University Hospital of Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf (CIO ABCD), European Diamond Excellence Center for Medical Mycology (ECMM), Cologne, Germany.,German Centre for Infection Research (DZIF), partner site Bonn - Cologne, Cologne, Germany.,Center for Integrated Oncology CIO Köln/Bonn, Medical Faculty, University of Cologne, Cologne, Germany.,Department of Internal Medicine, Infectious Diseases, Goethe University, Frankfurt, Frankfurt am Main, Germany
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7
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Therapeutic Challenges of Non- Aspergillus Invasive Mold Infections in Immunosuppressed Patients. Antimicrob Agents Chemother 2019; 63:AAC.01244-19. [PMID: 31481441 DOI: 10.1128/aac.01244-19] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
While Aspergillus spp. remain the major cause of invasive mold infections in hematologic cancer patients and transplant recipients, other opportunistic molds, such as Mucorales, Fusarium, and Scedosporium spp. are increasingly encountered in an expanding population of patients with severe and prolonged immunosuppression. High potential for tissue invasion and dissemination, resistance to multiple antifungals and high mortality rates are hallmarks of these non-Aspergillus invasive mold infections (NAIMIs). Assessment of drug efficacy is particularly difficult in the complex treatment scenarios of NAIMIs. Specifically, correlation between in vitro susceptibility and in vivo responses to antifungals is hard to assess, in view of the multiple, frequently interrelated factors influencing outcomes, such as pharmacokinetic/pharmacodynamic parameters determining drug availability at the site of infection, the net state of immune suppression, delay in diagnosis, or surgical debulking of infectious foci. Our current therapeutic approach of NAIMIs should evolve toward a better integration of the dynamic interactions between the pathogen, the drug and the host. Innovative concepts of experimental research may consist in manipulating the host immune system to induce a specific antifungal response or targeted drug delivery. In this review, we discuss the challenges in the management of NAIMIs and provide an update about the latest advances in diagnostic and therapeutic approaches.
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Otto WR, Pahud BA, Yin DE. Pediatric Mucormycosis: A 10-Year Systematic Review of Reported Cases and Review of the Literature. J Pediatric Infect Dis Soc 2019; 8:342-350. [PMID: 31181136 DOI: 10.1093/jpids/piz007] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 05/28/2019] [Indexed: 12/29/2022]
Abstract
Mucormycosis is a severe infection that affects a variety of patients, including immunocompromised children and neonates. Given improved survival rates from advances in the treatment of malignancies, the population at risk for mucormycosis is increasing. We conducted a systematic review of cases of mucormycosis in children in the English-language literature reported between August 2008 and June 2017 and analyzed the clinical characteristics, diagnosis, management, and outcome of those infections. The most common underlying diagnoses included neutropenia (41%), hematologic malignancy (39%), prematurity (13%), and hematopoietic stem cell transplant (11%). Sinus disease (28%) and disseminated disease (24%) were the most common presentations. Rhizopus spp were the most common organisms isolated (22%). Amphotericin B remains the backbone of treatment and was prescribed in 86% of these cases. The resulting mortality rate remains high (32%). We provide here the results of a literature review of mucormycosis in children, including its epidemiology and clinical manifestations, and describe current advances in its diagnosis and treatment.
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Affiliation(s)
- William R Otto
- Department of Pediatrics, Division of Infectious Diseases, Children's Hospital of Philadelphia, Pennsylvania
| | - Barbara A Pahud
- Department of Pediatrics, Division of Infectious Diseases, Children's Mercy, Kansas City, Missouri.,Department of Pediatrics, University of Missouri-Kansas City School of Medicine, Missouri
| | - Dwight E Yin
- Department of Pediatrics, Division of Infectious Diseases, Children's Mercy, Kansas City, Missouri.,Department of Pediatrics, University of Missouri-Kansas City School of Medicine, Missouri
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Epidemiology of antifungal susceptibility: Review of literature. J Mycol Med 2019; 28:574-584. [PMID: 29773435 DOI: 10.1016/j.mycmed.2018.04.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 04/26/2018] [Accepted: 04/27/2018] [Indexed: 11/24/2022]
Abstract
Fungal infections are a major cause of morbidity and mortality despite the latest developments of diagnostic tools and therapeutic options. Early initiation of the appropriate antifungal therapy has been demonstrated to have a direct impact on the patient's outcome. Antifungal susceptibility testing methods are available to detect antifungal resistance and to determine the best treatment for a specific fungus. American and European standards have been developed, as well as equivalent commercial systems, which are more appropriate for clinical laboratories. These studies have allowed the development of interpretative breakpoints against the most frequent agents of fungal infections in the world. Surveillance of antifungal susceptibility patterns can provide the local drug resistance data to the clinicians, which can further aid better management of patients. Antifungal susceptibility tests have become essential tools to identify resistance to antifungals, to know the local and global disease epidemiology and to guide the treatment of fungal diseases. The distribution of species and the prevalence of antifungal resistance in fungi isolates varied among different areas. Here we summarize the epidemiology of antifungal susceptibility pattern of different fungal species.
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In Vitro Activity of Isavuconazole against Opportunistic Fungal Pathogens from Two Mycology Reference Laboratories. Antimicrob Agents Chemother 2018; 62:AAC.01230-18. [PMID: 30061288 PMCID: PMC6153788 DOI: 10.1128/aac.01230-18] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 07/19/2018] [Indexed: 12/21/2022] Open
Abstract
Monitoring antifungal susceptibility patterns for new and established antifungal agents seems prudent given the increasing prevalence of uncommon species associated with higher antifungal resistance. We evaluated the activity of isavuconazole against 4,856 invasive yeasts and molds collected worldwide. The 4,856 clinical fungal isolates, including 2,351 Candida species isolates, 97 non-Candida yeasts, 1,972 Aspergillus species isolates, and 361 non-Aspergillus molds, including 292 Mucorales isolates collected in 2015 to 2016, were tested using CLSI methods. The MIC values for isavuconazole versus Aspergillus ranged from 0.06 to ≥16 μg/ml. The modal MIC for isavuconazole was 0.5 μg/ml (range, 0.25 [A. nidulans and A. terreus species complex] to 4 μg/ml [A. calidoustus and A. tubingensis]). Eight A. fumigatus isolates had elevated isavuconazole MIC values at ≥8 μg/ml (non-wild type). Isavuconazole showed comparable activity to itraconazole against the Mucorales The lowest modal isavuconazole MIC values were seen for Rhizopus spp., R. arrhizus var. arrhizus, and R. microsporus (all 1 μg/ml). Candida species isolates were inhibited by ≤0.25 μg/ml of isavuconazole (range, 96.1% [C. lusitaniae] to 100.0% [C. albicans, C. dubliniensis, C. kefyr, and C. orthopsilosis]). MIC values were ≤1 μg/ml for 95.5% of C. glabrata isolates and 100.0% of C. krusei isolates. Isavuconazole was active against the non-Candida yeasts, including Cryptococcus neoformans (100.0% at ≤0.5 μg/ml). Isavuconazole exhibited excellent activity against most species of Candida and Aspergillus Isavuconazole was comparable to posaconazole and voriconazole against the less common yeasts and molds. Isavuconazole was generally less active than posaconazole and more active than voriconazole against the 292 Mucorales isolates. We confirm the potentially useful activity of isavuconazole against species of Rhizopus as determined by CLSI methods.
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11
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Kabulski GM, MacVane SH. Isavuconazole pharmacokinetics in a patient with cystic fibrosis following bilateral orthotopic lung transplantation. Transpl Infect Dis 2018. [DOI: 10.1111/tid.12878] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Galen M. Kabulski
- Department of Pharmacy Services; Medical University of South Carolina; Charleston SC USA
- Medical University of South Carolina College of Pharmacy; Charleston SC USA
| | - Shawn H. MacVane
- Department of Pharmacy Services; Medical University of South Carolina; Charleston SC USA
- Division of Infectious Diseases; Department of Medicine; Medical University of South Carolina; Charleston SC USA
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12
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Denis J, Ledoux MP, Nivoix Y, Herbrecht R. Isavuconazole: A new broad-spectrum azole. Part 1: In vitro activity. J Mycol Med 2018. [DOI: 10.1016/j.mycmed.2018.02.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Poissy J, Duburcq T, Thieffry C, Decrucq-Parmentier E, Mathieu D. « Nouvelles » molécules anti-infectieuses. Quelle place en médecine intensive/réanimation pour l’isavuconazole ? MEDECINE INTENSIVE REANIMATION 2017. [DOI: 10.1007/s13546-017-1269-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Tissot F, Agrawal S, Pagano L, Petrikkos G, Groll AH, Skiada A, Lass-Flörl C, Calandra T, Viscoli C, Herbrecht R. ECIL-6 guidelines for the treatment of invasive candidiasis, aspergillosis and mucormycosis in leukemia and hematopoietic stem cell transplant patients. Haematologica 2016; 102:433-444. [PMID: 28011902 PMCID: PMC5394968 DOI: 10.3324/haematol.2016.152900] [Citation(s) in RCA: 367] [Impact Index Per Article: 45.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 12/20/2016] [Indexed: 11/30/2022] Open
Abstract
The European Conference on Infections in Leukemia (ECIL) provides recommendations for diagnostic strategies and prophylactic, pre-emptive or targeted therapy strategies for various types of infection in patients with hematologic malignancies or hematopoietic stem cell transplantation recipients. Meetings are held every two years since 2005 and evidence-based recommendations are elaborated after evaluation of the literature and discussion among specialists of nearly all European countries. In this manuscript, the ECIL group presents the 2015-update of the recommendations for the targeted treatment of invasive candidiasis, aspergillosis and mucormycosis. Current data now allow a very strong recommendation in favor of echinocandins for first-line therapy of candidemia irrespective of the underlying predisposing factors. Anidulafungin has been given the same grading as the other echinocandins for hemato-oncological patients. The beneficial role of catheter removal in candidemia is strengthened. Aspergillus guidelines now recommend the use of either voriconazole or isavuconazole for first-line treatment of invasive aspergillosis, while first-line combination antifungal therapy is not routinely recommended. As only few new data were published since the last ECIL guidelines, no major changes were made to mucormycosis recommendations.
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Affiliation(s)
- Frederic Tissot
- Infectious Diseases Service, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Switzerland
| | - Samir Agrawal
- Division of Haemato-Oncology, St Bartholomew's Hospital and Blizard Institute, Queen Mary University, London, UK
| | - Livio Pagano
- Hematology, Catholic University of Sacred Heart, Roma, Italy
| | | | - Andreas H Groll
- Infectious Disease Research Program, Center for Bone Marrow Transplantation and Department of Pediatric Hematology/Oncology, University Children's Hospital, Münster, Germany
| | - Anna Skiada
- 1st Department of Medicine, University of Athens, Greece
| | - Cornelia Lass-Flörl
- Division of Hygiene and Medical Microbiology, Medical University of Innsbruck, Austria
| | - Thierry Calandra
- Infectious Diseases Service, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Switzerland
| | - Claudio Viscoli
- University of Genova (DISSAL), Infectious Disease Division, IRCCS San Martino-IST, Genova, Italy
| | - Raoul Herbrecht
- Oncology and Hematology, Hôpitaux Universitaires de Strasbourg and Université de Strasbourg, France
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Natesan SK, Chandrasekar PH. Isavuconazole for the treatment of invasive aspergillosis and mucormycosis: current evidence, safety, efficacy, and clinical recommendations. Infect Drug Resist 2016; 9:291-300. [PMID: 27994475 PMCID: PMC5153275 DOI: 10.2147/idr.s102207] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The majority of invasive mold infections diagnosed in immunocompromised cancer patients include invasive aspergillosis (IA) and mucormycosis. Despite timely and effective therapy, mortality remains considerable. Antifungal agents currently available for the management of these serious infections include triazoles, polyenes, and echinocandins. Until recently, posaconazole has been the only triazole with a broad spectrum of anti-mold activity against both Aspergillus sp. and mucorales. Other clinically available triazoles voriconazole and itraconazole, with poor activity against mucorales, have significant drug interactions in addition to a side effect profile inherent for all triazoles. Polyenes including lipid formulations pose a problem with infusion-related side effects, electrolyte imbalance, and nephrotoxicity. Echinocandins are ineffective against mucorales and are approved as salvage therapy for refractory IA. Given that all available antifungal agents have limitations, there has been an unmet need for a broad-spectrum anti-mold agent with a favorable profile. Following phase III clinical trials that started in 2006, isavuconazole (ISZ) seems to fit this profile. It is the first novel triazole agent recently approved by the United States Food and Drug Administration (FDA) for the treatment of both IA and mucormycosis. This review provides a brief overview of the salient features of ISZ, its favorable profile with regard to spectrum of antifungal activity, pharmacokinetic and pharmacodynamic parameters, drug interactions and tolerability, clinical efficacy, and side effects.
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Affiliation(s)
- Suganthini Krishnan Natesan
- Division of Infectious Diseases, Department of Internal Medicine, Wayne State University
- John D Dingell VA Medical Center, Detroit, MI, USA
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Gebremariam T, Wiederhold NP, Alqarihi A, Uppuluri P, Azie N, Edwards JE, Ibrahim AS. Monotherapy or combination therapy of isavuconazole and micafungin for treating murine mucormycosis. J Antimicrob Chemother 2016; 72:462-466. [PMID: 27798213 DOI: 10.1093/jac/dkw433] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/14/2016] [Accepted: 09/15/2016] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVES Previously we demonstrated the benefit of isavuconazole in treating murine mucormycosis due to Rhizopus. We wanted to determine the efficacy of isavuconazole in treating murine mucormycosis caused by Mucor, the second most common cause of the disease. Furthermore, because we previously determined that Rhizopus possesses the target enzyme for echinocandins and micafungin has activity against murine mucormycosis, we compared the activity of combination therapy (isavuconazole + micafungin) with placebo, either drug alone or standard therapy of liposomal amphotericin B (LAmB) in treating pulmonary murine mucormycosis caused by Rhizopus delemar. METHODS In vitro susceptibility to isavuconazole of Mucorales was evaluated using the CLSI M38-A2 method. Immunosuppressed mice were intratracheally infected with either Mucor circinelloides or R. delemar. Treatment with isavuconazole (orally), micafungin (intraperitoneally), a combination of both or LAmB (intravenously) was compared, with survival and tissue fungal burden serving as primary and secondary endpoints, respectively. RESULTS Isavuconazole was as effective as LAmB in prolonging survival of mice infected with M. circinelloides. Against R. delemar-induced mucormycosis, all monotherapy treatments significantly improved survival of mice versus placebo without showing superiority over one another. However, LAmB was superior in lowering fungal burden in target organs. Although combination therapy of isavuconazole + micafungin did not enhance survival of mice over monotherapy, antagonism was not detected between the two drugs. CONCLUSION Isavuconazole is effective in treating pulmonary murine mucormycosis due to Mucor. In addition, combination therapy of isavuconazole + micafungin does not demonstrate synergy and it is not antagonistic against Rhizopus-induced mucormycosis.
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Affiliation(s)
- Teclegiorgis Gebremariam
- Division of Infectious Diseases, Los Angeles Biomedical Research Institute at Harbor-University of California Los Angeles (UCLA) Medical Center, Torrance, CA, USA
| | | | - Abdullah Alqarihi
- Division of Infectious Diseases, Los Angeles Biomedical Research Institute at Harbor-University of California Los Angeles (UCLA) Medical Center, Torrance, CA, USA
| | - Priya Uppuluri
- Division of Infectious Diseases, Los Angeles Biomedical Research Institute at Harbor-University of California Los Angeles (UCLA) Medical Center, Torrance, CA, USA.,David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | | | - John E Edwards
- Division of Infectious Diseases, Los Angeles Biomedical Research Institute at Harbor-University of California Los Angeles (UCLA) Medical Center, Torrance, CA, USA.,David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Ashraf S Ibrahim
- Division of Infectious Diseases, Los Angeles Biomedical Research Institute at Harbor-University of California Los Angeles (UCLA) Medical Center, Torrance, CA, USA .,David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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Shirley M, Scott LJ. Isavuconazole: A Review in Invasive Aspergillosis and Mucormycosis. Drugs 2016; 76:1647-1657. [DOI: 10.1007/s40265-016-0652-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Murrell D, Bossaer JB, Carico R, Harirforoosh S, Cluck D. Isavuconazonium sulfate: a triazole prodrug for invasive fungal infections. INTERNATIONAL JOURNAL OF PHARMACY PRACTICE 2016; 25:18-30. [DOI: 10.1111/ijpp.12302] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Accepted: 07/27/2016] [Indexed: 01/03/2023]
Affiliation(s)
- Derek Murrell
- Department of Pharmaceutical Sciences; Gatton College of Pharmacy; East Tennessee State University; Johnson City TN
| | - John B. Bossaer
- Department of Pharmacy Practice; Gatton College of Pharmacy; East Tennessee State University; Johnson City TN
| | - Ronald Carico
- Department of Pharmacy Practice; Gatton College of Pharmacy; East Tennessee State University; Johnson City TN
| | - Sam Harirforoosh
- Department of Pharmaceutical Sciences; Gatton College of Pharmacy; East Tennessee State University; Johnson City TN
| | - David Cluck
- Department of Pharmacy Practice; Gatton College of Pharmacy; East Tennessee State University; Johnson City TN
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Population Pharmacokinetics of Isavuconazole from Phase 1 and Phase 3 (SECURE) Trials in Adults and Target Attainment in Patients with Invasive Infections Due to Aspergillus and Other Filamentous Fungi. Antimicrob Agents Chemother 2016; 60:5483-91. [PMID: 27381396 PMCID: PMC4997882 DOI: 10.1128/aac.02819-15] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 06/26/2016] [Indexed: 12/11/2022] Open
Abstract
Isavuconazole, the active moiety of the water-soluble prodrug isavuconazonium sulfate, is a triazole antifungal agent used for the treatment of invasive fungal infections. The objective of this analysis was to develop a population pharmacokinetic (PPK) model to identify covariates that affect isavuconazole pharmacokinetics and to determine the probability of target attainment (PTA) for invasive aspergillosis patients. Data from nine phase 1 studies and one phase 3 clinical trial (SECURE) were pooled to develop the PPK model (NONMEM, version 7.2). Stepwise covariate modeling was performed in Perl-speaks-NONMEM, version 3.7.6. The area under the curve (AUC) at steady state was calculated for 5,000 patients by using Monte Carlo simulations. The PTA using the estimated pharmacodynamic (PD) target value (total AUC/MIC ratio) estimated from in vivo PD studies of invasive aspergillosis over a range of MIC values was calculated using simulated patient AUC values. A two-compartment model with a Weibull absorption function and a first-order elimination process adequately described plasma isavuconazole concentrations. The mean estimate for isavuconazole clearance was 2.360 liters/h (percent coefficient of variation [%CV], 34%), and the mean AUC from 0 to 24 h (AUC0-24) was ∼100 mg·h/liter. Clearance was approximately 36% lower in Asians than in Caucasians. The PTA calculated over a range of MIC values by use of the nonneutropenic murine efficacy index corresponding to 90% survival indicated that adequate isavuconazole exposures were achieved in >90% of simulated patients to treat infections with MICs up to and including 1 mg/liter according to European Committee on Antimicrobial Susceptibility Testing methodology and in >90% of simulated patients for infections with MICs up to and including 0.5 mg/liter according to Clinical and Laboratory Standards Institute methodology. The highest MIC result for PTA was the same for Caucasian and Asian patients.
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Lockhart SR, Berkow EL. Hot topics in antifungal susceptibility testing: A new drug, a bad bug, sweeping caspofungin testing under the rug, and solving the ECV shrug. CLINICAL MICROBIOLOGY NEWSLETTER 2016; 38:103-108. [PMID: 29545657 PMCID: PMC5849271 DOI: 10.1016/j.clinmicnews.2016.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
There are several new hot topics in antifungals and antifungal susceptibility testing. In this review, four topics of general interest to the clinical microbiology community are discussed. The first topic is the introduction of isavuconazole, a new triazole approved for clinical use in the US. The second is triazole resistance in Aspergillus fumigatus isolates. A specific set of mutations are being found with greater frequency in isolates globally, including the US. The third topic of interest is a word of caution about antifungal susceptibility testing for caspofungin in Candida isolates; some laboratories have reported susceptible isolates with high MIC values that would be interpreted as resistant. The final topic is an introduction to epidemiological cutoff values and their use in the clinical mycology laboratory.
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Affiliation(s)
- Shawn R Lockhart
- Mycotic Diseases Branch, Centers for Disease Control and Prevention, Atlanta, GA
| | - Elizabeth L Berkow
- Mycotic Diseases Branch, Centers for Disease Control and Prevention, Atlanta, GA
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Donnelley MA, Zhu ES, Thompson GR. Isavuconazole in the treatment of invasive aspergillosis and mucormycosis infections. Infect Drug Resist 2016; 9:79-86. [PMID: 27330318 PMCID: PMC4898026 DOI: 10.2147/idr.s81416] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
We have a limited arsenal with which to treat invasive fungal infections caused by Aspergillus and Mucorales. The morbidity and mortality for both pathogens remains high. A triazole antifungal, isavuconazole, was recently granted approval by the US Food and Drug Administration and the European Medicines Agency for the treatment of invasive aspergillosis and mucormycosis. A randomized double-blind comparison trial for the treatment of invasive aspergillosis found isavuconazole noninferior to voriconazole. A separate, open-label study evaluating the efficacy of isavuconazole in the treatment of mucormycosis found comparable response rates to amphotericin B and posaconazole treated historical controls. The prodrug isavuconazonium sulfate is commercially available in both an oral and intravenous formulation and is generally well tolerated. Isavuconazole’s broad spectrum of activity, limited side effect profile, and favorable pharmacokinetics will likely solidify its place in therapy.
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Affiliation(s)
- Monica A Donnelley
- Department of Inpatient Pharmacy, University of California - Davis, Sacramento, USA; Department of Clinical Sciences, Touro University College of Pharmacy, Vallejo, USA
| | - Elizabeth S Zhu
- Department of Inpatient Pharmacy, University of California - Davis, Sacramento, USA
| | - George R Thompson
- Department of Medicine, Division of Infectious Diseases, University of California - Davis, Davis, CA, USA
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Kovanda LL, Maher R, Hope WW. Isavuconazonium sulfate: a new agent for the treatment of invasive aspergillosis and invasive mucormycosis. Expert Rev Clin Pharmacol 2016; 9:887-97. [DOI: 10.1080/17512433.2016.1185361] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Laura L. Kovanda
- Astellas Pharma Global Development, Inc., Northbrook, IL, USA
- Antimicrobial Pharmacodynamics and Therapeutics, Department of Molecular and Clinical Pharmacology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Rochelle Maher
- Astellas Pharma Global Development, Inc., Northbrook, IL, USA
| | - William W. Hope
- Antimicrobial Pharmacodynamics and Therapeutics, Department of Molecular and Clinical Pharmacology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK
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Busca A, Tortorano AM, Pagano L. Reviewing the importance and evolution of fungal infections and potential antifungal resistance in haematological patients. J Glob Antimicrob Resist 2015; 3:237-241. [DOI: 10.1016/j.jgar.2015.09.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 09/09/2015] [Accepted: 09/11/2015] [Indexed: 12/11/2022] Open
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Chowdhary A, Singh PK, Kathuria S, Hagen F, Meis JF. Comparison of the EUCAST and CLSI Broth Microdilution Methods for Testing Isavuconazole, Posaconazole, and Amphotericin B against Molecularly Identified Mucorales Species. Antimicrob Agents Chemother 2015; 59:7882-7. [PMID: 26438489 PMCID: PMC4649204 DOI: 10.1128/aac.02107-15] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 09/27/2015] [Indexed: 12/13/2022] Open
Abstract
We compared EUCAST and CLSI antifungal susceptibility testing (AFST) methods for triazoles and amphotericin B against 124 clinical Mucorales isolates. The EUCAST method yielded MIC values 1- to 3-fold dilutions higher than those of the CLSI method for amphotericin B. The essential agreements between the two methods for triazoles were high, i.e., 99.1% (voriconazole), 98.3% (isavuconazole), and 87% (posaconazole), whereas it was significantly lower for amphotericin B (66.1%). Strategies for harmonization of the two methods for Mucorales AFST are warranted.
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Affiliation(s)
- Anuradha Chowdhary
- Department of Medical Mycology, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India
| | - Pradeep Kumar Singh
- Department of Medical Mycology, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India
| | - Shallu Kathuria
- Department of Medical Mycology, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India
| | - Ferry Hagen
- Department of Medical Microbiology and Infectious Diseases, Canisius-Wilhelmina Hospital, Nijmegen, The Netherlands
| | - Jacques F Meis
- Department of Medical Microbiology and Infectious Diseases, Canisius-Wilhelmina Hospital, Nijmegen, The Netherlands Department of Medical Microbiology, Radboudumc, Nijmegen, The Netherlands
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Arendrup MC, Jensen RH, Meletiadis J. In Vitro Activity of Isavuconazole and Comparators against Clinical Isolates of the Mucorales Order. Antimicrob Agents Chemother 2015; 59:7735-42. [PMID: 26438494 PMCID: PMC4649229 DOI: 10.1128/aac.01919-15] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 09/28/2015] [Indexed: 12/16/2022] Open
Abstract
The in vitro activity of isavuconazole against Mucorales isolates measured by EUCAST E.Def 9.2 and CLSI M38-A2 methodologies was investigated in comparison with those of amphotericin B, posaconazole, and voriconazole. Seventy-two isolates were included: 12 of Lichtheimia corymbifera, 5 of Lichtheimia ramosa, 5 of group I and 9 of group II of Mucor circinelloides, 9 of Rhizomucor pusillus, 26 of Rhizopus microsporus, and 6 of Rhizopus oryzae. Species identification was confirmed by internal transcribed spacer (ITS) sequencing. EUCAST MICs were read on day 1 (EUCAST-d1) and day 2 (EUCAST-d2), and CLSI MICs were read on day 2 (CLSI-d2). Isavuconazole MIC50s (range) (mg/liter) by EUCAST-d1, CLSI-d2, and EUCAST-d2 were 1 (0.125 to 16), 1 (0.125 to 2), and 4 (0.5 to >16), respectively, across all isolates. The similar values for comparator drugs were as follows: posaconazole, 0.25 (≤ 0.03 to >16), 0.25 (0.06 to >16), and 1 (0.06 to >16); amphotericin, 0.06 (≤ 0.03 to 0.5), 0.06 (≤ 0.03 to 0.25), and 0.125 (≤ 0.03 to 1); voriconazole, 16 (2 to >16), 8 (1 to >16), and >16 (8 to >16), respectively. Isavuconazole activity varied by species: Lichtheimia corymbifera, 1 (0.5 to 2), 1 (1 to 2), and 2 (1 to 4); Lichtheimia ramosa, 0.25 (0.125 to 0.5), 1 (0.5 to 2), and 2 (0.5 to 4); Rhizomucor pusillus, 0.5 (0.5 to 1), 1 (0.125 to 1), and 2 (1 to 2); Rhizopus microsporus, 1 (0.5 to 4), 0.5 (0.125 to 1), and 4 (1 to 8); and Rhizopus oryzae, 1 (0.5 to 4), 1 (0.125 to 2), and 4 (0.5 to 8), respectively, were more susceptible than Mucor circinelloides: group I, 8 (4 to 8), 4 (2 to 4), and 16 (2 to 16), respectively, and group II, 8 (1 to 16), 8 (1 to 8), and 16 (4 to >16), respectively. This was also observed for posaconazole. The essential agreement was best between EUCAST-d1 and CLSI-d2 (75% to 83%). Isavuconazole displayed in vitro activity against Mucorales isolates with the exception of Mucor circinelloides. The MICs were in general 1 to 3 steps higher than those for posaconazole. However, in the clinical setting this may be compensated for by the higher exposure at standard dosing.
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Affiliation(s)
| | | | - Joseph Meletiadis
- Clinical Microbiology Laboratory, Attikon University Hospital, National and Kapodistrian University of Athens, Athens, Greece
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Rybak JM, Marx KR, Nishimoto AT, Rogers PD. Isavuconazole: Pharmacology, Pharmacodynamics, and Current Clinical Experience with a New Triazole Antifungal Agent. Pharmacotherapy 2015; 35:1037-51. [DOI: 10.1002/phar.1652] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jeffrey M. Rybak
- Department of Clinical Pharmacy; University of Tennessee Health Science Center; Memphis Tennessee
| | - Kayleigh R. Marx
- Division of Pharmacy; University of Texas MD Anderson Cancer Center; Houston Texas
| | - Andrew T. Nishimoto
- Department of Clinical Pharmacy; University of Tennessee Health Science Center; Memphis Tennessee
| | - P. David Rogers
- Department of Clinical Pharmacy; University of Tennessee Health Science Center; Memphis Tennessee
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Seyedmousavi S, Verweij PE, Mouton JW. Isavuconazole, a broad-spectrum triazole for the treatment of systemic fungal diseases. Expert Rev Anti Infect Ther 2015; 13:9-27. [PMID: 25488140 DOI: 10.1586/14787210.2015.990382] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The prodrug isavuconazonium sulfate (BAL8557) is an extended-spectrum water-soluble triazole, developed for the treatment of severe invasive and life-threatening fungal diseases. Its active moiety, BAL4815, is a potent inhibitor of ergosterol biosynthesis, resulting in the disruption of fungal membrane structure and function. The active compound shows broad-spectrum of activity and potency against all major opportunistic fungi, such as Aspergillus spp., Candida spp., Cryptococcus spp., Mucorales, Black yeasts and their filamentous relatives and the true pathogenic fungi, including Histoplasma capsulatum and Blastomyces dermatitidis. It is currently in Phase III clinical development for treatment of aspergillosis, candidiasis and mucormycosis, as well as other rare fungi infections. We reviewed the pharmacokinetic and pharmacodynamic characteristics of isavuconazole, and its microbiological and clinical investigation progress in advanced stages of development.
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Affiliation(s)
- Seyedmojtaba Seyedmousavi
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC, P.O. Box. 2040, 3000 CA, Rotterdam, The Netherlands
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Miceli MH, Kauffman CA. Isavuconazole: A New Broad-Spectrum Triazole Antifungal Agent. Clin Infect Dis 2015; 61:1558-65. [PMID: 26179012 DOI: 10.1093/cid/civ571] [Citation(s) in RCA: 208] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 07/01/2015] [Indexed: 11/14/2022] Open
Abstract
Isavuconazole is a new extended-spectrum triazole with activity against yeasts, molds, and dimorphic fungi. It is approved for the treatment of invasive aspergillosis and mucormycosis. Advantages of this triazole include the availability of a water-soluble intravenous formulation, excellent bioavailability of the oral formulation, and predictable pharmacokinetics in adults. A randomized, double-blind comparison clinical trial for treatment of invasive aspergillosis found that the efficacy of isavuconazole was noninferior to that of voriconazole. An open-label trial that studied primary as well as salvage therapy of invasive mucormycosis showed efficacy with isavuconazole that was similar to that reported for amphotericin B and posaconazole. In patients in these studies, as well as in normal volunteers, isavuconazole was well tolerated, appeared to have few serious adverse effects, and had fewer drug-drug interactions than those noted with voriconazole. As clinical experience increases, the role of this new triazole in the treatment of invasive fungal infections will be better defined.
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Affiliation(s)
- Marisa H Miceli
- Division of Infectious Diseases, Department of Internal Medicine, University of Michigan Health System
| | - Carol A Kauffman
- Division of Infectious Diseases, Department of Internal Medicine, University of Michigan Health System Veterans Affairs Ann Arbor Healthcare System, Michigan
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Miceli MH, Kauffman CA. Treatment Options for Mucormycosis. CURRENT TREATMENT OPTIONS IN INFECTIOUS DISEASES 2015. [DOI: 10.1007/s40506-015-0050-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Successful Treatment of Primary Cutaneous Mucormycosis Complicating Anti-TNF Therapy with a Combination of Surgical Debridement and Oral Posaconazole. Mycopathologia 2015; 180:187-92. [DOI: 10.1007/s11046-015-9914-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 06/15/2015] [Indexed: 10/23/2022]
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Chitasombat MN, Kontoyiannis DP. The 'cephalosporin era' of triazole therapy: isavuconazole, a welcomed newcomer for the treatment of invasive fungal infections. Expert Opin Pharmacother 2015; 16:1543-58. [PMID: 26100603 DOI: 10.1517/14656566.2015.1057500] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Invasive fungal infections remain frequent life-threatening complications in immunocompromised patients. Each of the currently available antifungals has limitations in terms of pharmacokinetic and pharmacodynamic profile, spectrum of efficacy, and tolerability. Isavuconazole (ISA) is a new generation, broad-spectrum triazole that has a favorable spectrum of efficacy and is available in both intravenous and oral forms. Recent Phase III clinical studies showed that ISA had comparable efficacy to voriconazole for the treatment of a variety of mould infections. AREAS COVERED This review summarizes the literature on the use of ISA. PubMed was searched for publications in English from 2006 to December 2014 using the terms 'ISA', 'BAL4815', and 'BAL 8557'. Relevant publications were reviewed and reference lists were examined for further publications. Conference abstracts from the meeting during 2013 - 2014 were also reviewed. EXPERT OPINION ISA is a new broad spectrum triazole antifungal for the treatment of invasive fungal disease available as oral and intravenous formulations, and the ability to be administered as a once-daily regimen. ISA has broad-spectrum in vitro activity, favorable pharmacokinetic profile, and good tolerability. ISA may be considered for primary treatment for a vast variety of invasive fungal infections. Further study of ISA given as prophylaxis, combination, or salvage therapy is warranted.
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Affiliation(s)
- Maria N Chitasombat
- Mahidol University, Division of Infectious Diseases, Department of Medicine, Faculty of Medicine Ramathibodi Hospital , Bangkok , Thailand
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Abstract
Objective: To review the pharmacology, chemistry, in vitro susceptibility, pharmacokinetics, clinical efficacy, safety, tolerability, dosage, and administration of isavuconazole, a triazole antifungal agent. Data Sources: Studies and reviews were identified through an English language MEDLINE search (1978 to March 2015) and from http://www.clinicaltrials.gov , Food and Drug Administration (FDA) briefing documents, program abstracts from international symposia, and the manufacturer’s Web site. Study Selection and Data Extraction: All published and unpublished trials, abstracts, in vitro and preclinical studies, and FDA briefing documents were reviewed. Data Synthesis: Isavuconazole has activity against a number of clinically important yeasts and molds, including Candida spp, Aspergillus spp, Cryptococcus neoformans, and Trichosporon spp and variable activity against the Mucorales. Isavuconazole, available for both oral and intravenous administration, is characterized by slow elimination allowing once-daily dosing, extensive tissue distribution, and high (>99%) protein binding. The most commonly reported adverse events, which are mild and limited in nature, include nausea, diarrhea, and elevated liver function tests. Its drug interaction potential appears to be similar to other azole antifungals but less than those observed with voriconazole. Comparative trials are under way or have been recently completed for the treatment of candidemia, invasive candidiasis and aspergillosis, and rare mold infections. Conclusions: Isavuconazole has a broad spectrum of activity and favorable pharmacokinetic properties, providing an advantage over other currently available broad-spectrum azole antifungals and a clinically useful alternative to voriconazole for the treatment of invasive aspergillosis. It may also prove useful for the treatment of candidemia and invasive mold infections; however, these indications await the results of clinical trials.
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Affiliation(s)
- Natasha N. Pettit
- University of Chicago Medicine, University of Chicago Medical Center, Chicago, IL, USA
| | - Peggy L. Carver
- University of Michigan College of Pharmacy, Ann Arbor, MI, USA
- University of Michigan Health System, Ann Arbor, MI, USA
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Ananda-Rajah MR, Kontoyiannis D. Isavuconazole: a new extended spectrum triazole for invasive mold diseases. Future Microbiol 2015; 10:693-708. [DOI: 10.2217/fmb.15.34] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
ABSTRACT Isavuconazole is the first broad spectrum prodrug triazole with efficacy against invasive fungal diseases including aspergillosis and mucormycosis. Characteristics include linear dose-proportional pharmacokinetics, intravenous and oral formulations allowing therapeutic streamlining, once daily dosing, absence of nephrotoxic solubilizing agents and excellent oral bioavailability independent of prandial status and gastric acidity. An open label noncomparator study demonstrated encouraging results for isavuconazole as primary or salvage therapy for a range of fungi including mucormycosis. Isavuconazole had fewer premature drug discontinuations and adverse events in the eye, hepatobiliary and psychiatry systems than the comparator agent, voriconazole in a randomized double-blind clinical trial. Cross-resistance of isavuconazole best correlates with voriconazole. In vitro resistance is not invariably predictive of clinical failure. Isavuconazole signals progress in pharmacokinetics, bioavailability and toxicity/tolerability supported by clinical efficacy from Phase III trials.
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Affiliation(s)
| | - Dimitrios Kontoyiannis
- Department of Infectious Diseases, Infection Control & Employee Health, Unit 1416, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
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Myers E, Dodds Ashley E. Antifungal Drug Therapeutic Monitoring: What are the Issues? CURRENT CLINICAL MICROBIOLOGY REPORTS 2015. [DOI: 10.1007/s40588-015-0019-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Safety and pharmacokinetics of isavuconazole as antifungal prophylaxis in acute myeloid leukemia patients with neutropenia: results of a phase 2, dose escalation study. Antimicrob Agents Chemother 2015; 59:2078-85. [PMID: 25624327 DOI: 10.1128/aac.04569-14] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Isavuconazole is a novel broad-spectrum triazole antifungal agent. This open-label dose escalation study assessed the safety and pharmacokinetics of intravenous isavuconazole prophylaxis in patients with acute myeloid leukemia who had undergone chemotherapy and had preexisting/expected neutropenia. Twenty-four patients were enrolled, and 20 patients completed the study. The patients in the low-dose cohort (n = 11) received isavuconazole loading doses on day 1 (400/200/200 mg, 6 h apart) and day 2 (200/200 mg, 12 h apart), followed by once-daily maintenance dosing (200 mg) on days 3 to 28. The loading and maintenance doses were doubled in the high-dose cohort (n = 12). The mean ± standard deviation plasma isavuconazole areas under the concentration-time curves for the dosing period on day 7 were 60.1 ± 22.3 μg · h/ml and 113.1 ± 19.6 μg · h/ml for the patients in the low-dose and high-dose cohorts, respectively. The adverse events in five patients in the low-dose cohort and in eight patients in the high-dose cohort were considered to be drug related. Most were mild to moderate in severity, and the most common adverse events were headache and rash (n = 3 each). One patient in the high-dose cohort experienced a serious adverse event (unrelated to isavuconazole treatment), and two patients each in the low-dose and high-dose cohorts discontinued the study due to adverse events. Of the 20 patients who completed the study, 18 were classified as a treatment success. In summary, the results of this analysis support the safety and tolerability of isavuconazole administered at 200 mg and 400 mg once-daily as prophylaxis in immunosuppressed patients at high risk of fungal infections. (This study is registered at ClinicalTrials.gov under registration number NCT00413439.).
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A phase 2, randomized, double-blind, multicenter trial to evaluate the safety and efficacy of three dosing regimens of isavuconazole compared with fluconazole in patients with uncomplicated esophageal candidiasis. Antimicrob Agents Chemother 2015; 59:1671-9. [PMID: 25561337 DOI: 10.1128/aac.04586-14] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Esophageal candidiasis is a frequent cause of morbidity in immunocompromised patients. Isavuconazole is a novel, broad-spectrum antifungal developed for the treatment of opportunistic fungal infections. This phase 2 trial compared the efficacy and safety of three oral dosing regimens of isavuconazole with an oral fluconazole regimen in the primary treatment of uncomplicated esophageal candidiasis. The isavuconazole regimens were as follows: 200 mg on day 1 and then 50 mg once daily (arm A), 400 mg on day 1 and then 400 mg once-weekly (arm B), and 400 mg on day 1 and then 100 mg once daily (arm C). Patients in arm D received fluconazole at 200 mg on day 1 and then 100 mg once daily. The minimum treatment duration was 14 days. The primary endpoint was the rate of endoscopically confirmed clinical response at end of therapy. Safety and tolerability were also assessed. Efficacy was evaluated in 153 of 160 enrolled patients. Overall, 146 (95.4%) achieved endoscopically confirmed clinical success. Each of the isavuconazole regimens was shown to be not inferior to fluconazole, i.e., arm A versus D, -0.5% (95% confidence interval [CI] -10.0 to 9.4), arm B versus D, 3.5% (95% CI, -5.6 to 12.7), and arm C versus D, -0.2% (95% CI, -9.8 to 9.4). The frequency of adverse events was similar in arm A (n = 22; 55%), arm B (n = 18; 45%), and arm D (n = 22; 58%), but higher in arm C (n = 29; 71%). In summary, efficacy and safety of once-daily and once-weekly isavuconazole were comparable with once-daily fluconazole in the primary treatment of uncomplicated esophageal candidiasis.
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Mendoza L, Vilela R, Voelz K, Ibrahim AS, Voigt K, Lee SC. Human Fungal Pathogens of Mucorales and Entomophthorales. Cold Spring Harb Perspect Med 2014; 5:cshperspect.a019562. [PMID: 25377138 DOI: 10.1101/cshperspect.a019562] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
In recent years, we have seen an increase in the number of immunocompromised cohorts as a result of infections and/or medical conditions, which has resulted in an increased incidence of fungal infections. Although rare, the incidence of infections caused by fungi belonging to basal fungal lineages is also continuously increasing. Basal fungal lineages diverged at an early point during the evolution of the fungal lineage, in which, in a simplified four-phylum fungal kingdom, Zygomycota and Chytridiomycota belong to the basal fungi, distinguishing them from Ascomycota and Basidiomycota. Currently there are no known human infections caused by fungi in Chytridiomycota; only Zygomycotan fungi are known to infect humans. Hence, infections caused by zygomycetes have been called zygomycosis, and the term "zygomycosis" is often used as a synonym for "mucormycosis." In the four-phylum fungal kingdom system, Zygomycota is classified mainly based on morphology, including the ability to form coenocytic (aseptated) hyphae and zygospores (sexual spores). In the Zygomycota, there are 10 known orders, two of which, the Mucorales and Entomophthorales, contain species that can infect humans, and the infection has historically been known as zygomycosis. However, recent multilocus sequence typing analyses (the fungal tree of life [AFTOL] project) revealed that the Zygomycota forms not a monophyletic clade but instead a polyphyletic clade, whereas Ascomycota and Basidiomycota are monophyletic. Thus, the term "zygomycosis" needed to be further specified, resulting in the terms "mucormycosis" and "entomophthoramycosis." This review covers these two different types of fungal infections.
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Affiliation(s)
- Leonel Mendoza
- Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan 48424-1031 Biomedical Laboratory Diagnostics, Michigan State University, East Lansing, Michigan 48424-1031
| | - Raquel Vilela
- Biomedical Laboratory Diagnostics, Michigan State University, East Lansing, Michigan 48424-1031 Faculty of Pharmacy, Federal University of Minas Gerais (UFMG), Minas Gerais, CEP33400000 Belo Horizonte, Brazil Belo Horizonte Brazil; Superior Institute of Medicine (ISMD), Minas Gerais, CEP33400000 Belo Horizonte, Brazil
| | - Kerstin Voelz
- Institute of Microbiology and Infection & School of Biosciences, University of Birmingham, Birmingham B15 2TT, United Kingdom The National Institute of Health Research Surgical Reconstruction and Microbiology Research Centre, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom B15 2WB
| | - Ashraf S Ibrahim
- Division of Infectious Diseases, Harbor-University of California Los Angeles Medical Center, St. John's Cardiovascular Research Center, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, California 90502 David Geffen School of Medicine at UCLA, Los Angeles, California 90095
| | - Kerstin Voigt
- Jena Microbial Resource Collection, Leibniz Institute for Natural Product Research and Infection Biology and University of Jena, Faculty of Biology and Pharmacy, Institute of Microbiology, Neugasse 25, 07743 Jena, Germany
| | - Soo Chan Lee
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, North Carolina 27710
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Ingram PR, Suthananthan AE, Rajan R, Pryce TM, Sieunarine K, Gardam DJ, Heath CH. Cutaneous mucormycosis and motor vehicle accidents: Findings from an Australian case series. Med Mycol 2014; 52:819-25. [PMID: 25288654 DOI: 10.1093/mmy/myu054] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Cutaneous disease is the third most frequent manifestation of mucormycosis. The clinical manifestations of and subsequent mortality due to cutaneous mucormycosis are dependent on the mode of acquisition and the host immune status. Here, we describe the epidemiology, clinical presentation, microbiology, and outcomes of 16 cutaneous mucormycosis infections managed in an Australian tertiary hospital over a 15-year period. The proportion with localized (56%), deep (38%), and disseminated (6%) cutaneous disease as well as the overall mortality (25%) were consistent with findings reported in the published literature. Two novel forms of hospital-acquired infection were reported following a sacral pressure sore and insertion of a foreign body during a bone graft procedure. The majority of patients were immunocompetent (75%) and/or suffered trauma (56%) with associated environmental contamination. A novel finding was that motor vehicle accidents (MVAs) accounted for 78% of all trauma-related cases, suggesting MVAs should receive greater recognition as a potential precipitant of cutaneous mucormycosis. Aggressive decontamination and debridement of devitalized tissue following trauma is therefore likely to play an important role in the prevention of this rare but potentially devastating infection.
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Affiliation(s)
- Paul R Ingram
- Department of Microbiology and Infectious Diseases, Royal Perth Hospital, Perth, Australia School of Pathology and Laboratory Medicine, University of Western Australia, Perth, Australia
| | | | - Ruben Rajan
- Department of General Surgery, Royal Perth Hospital, Perth, Australia
| | - Todd M Pryce
- Department of Microbiology and Infectious Diseases, Royal Perth Hospital, Perth, Australia
| | | | - Dianne J Gardam
- Department of Microbiology and Infectious Diseases, Royal Perth Hospital, Perth, Australia
| | - Christopher H Heath
- Department of Microbiology and Infectious Diseases, Royal Perth Hospital, Perth, Australia School of Medicine and Pharmacology, University of Western Australia, Perth, Australia
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Isavuconazole therapy protects immunosuppressed mice from mucormycosis. Antimicrob Agents Chemother 2014; 58:2450-3. [PMID: 24492363 DOI: 10.1128/aac.02301-13] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We studied the in vitro and in vivo efficacies of the investigational drug isavuconazole against mucormycosis due to Rhizopus delemar. Isavuconazole was effective, with MIC and minimal fungicidal concentration (MFC) values ranging between 0.125 and 1.00 μg/ml. A high dose of isavuconazole prolonged the survival time and lowered the tissue fungal burden of cyclophosphamide/cortisone acetate-treated mice infected with R. delemar and was as effective as a high-dose liposomal amphotericin B treatment. These results support the further development of this azole against mucormycosis.
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Ervens J, Ghannoum M, Graf B, Schwartz S. Successful isavuconazole salvage therapy in a patient with invasive mucormycosis. Infection 2013; 42:429-32. [PMID: 24217961 DOI: 10.1007/s15010-013-0552-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Accepted: 10/28/2013] [Indexed: 10/26/2022]
Abstract
A 45-year-old male with rhinocerebral mucormycosis (Rhizopus oryzae), refractory to liposomal amphotericin B and posaconazole, received isavuconazole salvage therapy. Initial isavuconazole plasma and tissue levels were 0.76-0.86 μg/mL and 1.09-1.38 μg/g. Plasma levels increased to 1.3-3.24 μg/mL with reduced comedication. Isavuconazole was well tolerated, and the patient has remained disease-free 24 months post-antifungal therapy.
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Affiliation(s)
- J Ervens
- Department of Oral and Maxillofacial Surgery, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Berlin, Germany
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Falci DR, Pasqualotto AC. Profile of isavuconazole and its potential in the treatment of severe invasive fungal infections. Infect Drug Resist 2013; 6:163-74. [PMID: 24187505 PMCID: PMC3810441 DOI: 10.2147/idr.s51340] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The triazole class of antifungal drugs comprises first-line agents for the treatment of several invasive fungal diseases. Isavuconazole is a novel broad-spectrum triazole agent. Here we summarize its characteristics and compare it with the currently available antifungal agents. Isavuconazole is administered as a prodrug, and it is water soluble. Oral and intravenous formulations are available. Its intravenous formulation does not contain cyclodextrin, which is an advantage over voriconazole, considering the potential for nephrotoxicity of cyclodextrin. As with other azoles, isavuconazole requires a loading dose. Due to its prolonged half-life, a once-a-day regimen is possible. Considering that isavuconazole shares the same mechanism of action with the other triazoles, cross-resistance is an important concern in the class. Tolerability and safety profiles are favorable, and no serious adverse events have been consistently reported. Significant interactions with drugs metabolized by cytochrome P450 are expected to occur, especially with substrates and inducers of the CYP3A4 enzyme. Isavuconazole has in vitro activity against most medically important fungi, including species of Candida, Aspergillus, and Cryptococcus. It has some activity against the agents of mucormycosis. Clinical data regarding isavuconazole remain limited because ongoing trials have not yet been completed or published. Isavuconazole has the potential to become first-line therapy for invasive aspergillosis. It also has the potential for use in the context of antifungal prophylaxis, salvage therapy, or in combination regimens. Results of clinical trials are ultimately expected in order to adequately position isavuconazole in the current antifungal armamentarium.
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Affiliation(s)
- Diego R Falci
- Hospital Nossa Senhora da Conceição, Porto Alegre, Brazil ; Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
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Lewis RE, Kontoyiannis DP. Epidemiology and treatment of mucormycosis. Future Microbiol 2013; 8:1163-75. [DOI: 10.2217/fmb.13.78] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Mucormycosis is an uncommon but aggressive opportunistic fungal infection that afflicts patients with severe underlying immunosuppression, uncontrolled hyperglycemia and/or ketoacidosis, patients with iron overload resulting from frequent blood transfusions or blood disorders and occasionally healthy patients who are inoculated with fungal spores through traumatic injuries. The clinical presentation of mucormycosis is initially indistinguishable from other common infections, and if not diagnosed early and aggressively treated, it is almost always fatal. In this article we summarize recent changes in the epidemiology of mucormycosis, discuss diagnostic and clinical clues suggestive of the infection and provide a general strategy for managing the infection in the absence of data from well-controlled, prospective clinical trials.
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Affiliation(s)
- Russell E Lewis
- Clinic of Infectious Diseases, Department of Internal Medicine, Geriatrics & Nephrologic Diseases, S’Orsola Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Dimitrios P Kontoyiannis
- Department of Infectious Diseases, Infection Control & Employee Health, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Division of Internal Medicine, Unit 1460, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, 77030, Houston, TX, USA
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Pfaller MA, Messer SA, Rhomberg PR, Jones RN, Castanheira M. In vitro activities of isavuconazole and comparator antifungal agents tested against a global collection of opportunistic yeasts and molds. J Clin Microbiol 2013; 51:2608-16. [PMID: 23740727 PMCID: PMC3719620 DOI: 10.1128/jcm.00863-13] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Accepted: 05/30/2013] [Indexed: 01/16/2023] Open
Abstract
Isavuconazole is a new broad-spectrum triazole with a favorable pharmacokinetic and safety profile. We report the MIC distributions for isavuconazole and 111 isolates of Candida (42 Candida albicans, 25 Candida glabrata, 22 Candida parapsilosis, 14 Candida tropicalis, and 8 Candida krusei isolates), as determined by Clinical and Laboratory Standards Institute (CLSI) and European Committee on Antimicrobial Susceptibility Testing (EUCAST) broth microdilution (BMD) methods. Also, the relative activities of isavuconazole, itraconazole, fluconazole, posaconazole, voriconazole, and the three echinocandins were assessed against a recent (2011) global collection of 1,358 isolates of Candida spp., 101 of Aspergillus spp., 54 of non-Candida yeasts, and 21 of non-Aspergillus molds using CLSI BMD methods. The overall essential agreement (EA) (±2 log2 dilutions) between the CLSI and EUCAST methods was 99.1% (EA at ±1 log2 dilution, 90.1% [range, 80.0 to 100.0%]). The activities of isavuconazole against the larger collection of Candida spp. and Aspergillus spp. were comparable to those of posaconazole and voriconazole; the MIC90 values for isavuconazole, posaconazole, and voriconazole against Candida spp. were 0.5, 1, and 0.25 μg/ml and against Aspergillus spp. were 2, 1, and 1 μg/ml, respectively. Isavuconazole showed good activities against Cryptococcus neoformans (MIC90, 0.12 μg/ml) and other non-Candida yeasts (MIC90, 1 μg/ml) but was less potent against non-Aspergillus molds (MIC90, >8 μg/ml). Isavuconazole MIC values for three mucormycete isolates were 4, 1, and 2 μg/ml, whereas all three were inhibited by 1 μg/ml posaconazole. Isavuconazole demonstrates broad-spectrum activity against this global collection of opportunistic fungi, and the CLSI and EUCAST methods can be used to test this agent against Candida, with highly comparable results.
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Skiada A, Lanternier F, Groll AH, Pagano L, Zimmerli S, Herbrecht R, Lortholary O, Petrikkos GL. Diagnosis and treatment of mucormycosis in patients with hematological malignancies: guidelines from the 3rd European Conference on Infections in Leukemia (ECIL 3). Haematologica 2012; 98:492-504. [PMID: 22983580 DOI: 10.3324/haematol.2012.065110] [Citation(s) in RCA: 232] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Mucormycosis is an emerging cause of infectious morbidity and mortality in patients with hematologic malignancies. However, there are no recommendations to guide diagnosis and management. The European Conference on Infections in Leukemia assigned experts in hematology and infectious diseases to develop evidence-based recommendations for the diagnosis and treatment of mucormycosis. The guidelines were developed using the evidence criteria set forth by the American Infectious Diseases Society and the key recommendations are summarized here. In the absence of validated biomarkers, the diagnosis of mucormycosis relies on histology and/or detection of the organism by culture from involved sites with identification of the isolate at the species level (no grading). Antifungal chemotherapy, control of the underlying predisposing condition, and surgery are the cornerstones of management (level A II). Options for first-line chemotherapy of mucormycosis include liposomal amphotericin B and amphotericin B lipid complex (level B II). Posaconazole and combination therapy of liposomal amphotericin B or amphotericin B lipid complex with caspofungin are the options for second line-treatment (level B II). Surgery is recommended for rhinocerebral and skin and soft tissue disease (level A II). Reversal of underlying risk factors (diabetes control, reversal of neutropenia, discontinuation/taper of glucocorticosteroids, reduction of immunosuppressants, discontinuation of deferroxamine) is important in the treatment of mucormycosis (level A II). The duration of antifungal chemotherapy is not defined but guided by the resolution of all associated symptoms and findings (no grading). Maintenance therapy/secondary prophylaxis must be considered in persistently immunocompromised patients (no grading).
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Affiliation(s)
- Anna Skiada
- Department of Propaedeutic Medicine, Laikon General Hospital, National and Kapodistrian University of Athens, Athens, Greece
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Rammaert B, Lanternier F, Poirée S, Kania R, Lortholary O. Diabetes and mucormycosis: A complex interplay. DIABETES & METABOLISM 2012; 38:193-204. [DOI: 10.1016/j.diabet.2012.01.002] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Accepted: 01/09/2012] [Indexed: 01/13/2023]
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Spellberg B, Ibrahim A, Roilides E, Lewis RE, Lortholary O, Petrikkos G, Kontoyiannis DP, Walsh TJ. Combination therapy for mucormycosis: why, what, and how? Clin Infect Dis 2012; 54 Suppl 1:S73-8. [PMID: 22247449 DOI: 10.1093/cid/cir885] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The high mortality rate of mucormycosis with currently available monotherapy, particularly in hematology patients, has stimulated interest in studying novel combinations of antifungal agents to determine whether superior outcomes might be achieved. Combination lipid polyene-echinocandin therapy is the most promising of such regimens based on safety profile, the availability of parenteral formulations of echinocandins, their synergy in murine models of mucormycosis, and observational clinical data that are concordant. Other options include combination lipid polyene plus deferasirox or posaconazole therapy. Definitive, randomized, placebo-controlled phase III clinical trials are needed to determine whether combination therapy with any of these options is superior to monotherapy. Until such studies are conducted, clinicians will continue to be placed in the unacceptable position of not knowing if and when to administer combination therapy. Such a state of confusion may lead to undertreatment if combination therapy is indeed superior but is not used and, conversely, may lead to unacceptable toxicity and cost to patients if combination therapy is not superior but is used. It is critical that sponsors step forward with funding to conduct these clinical trials to determine whether outcomes from these devastating infections can be improved.
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Affiliation(s)
- Brad Spellberg
- Division of General Internal Medicine, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, University of California at Los Angeles, 1124 West Carson St., Torrance, CA 90502, USA.
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50
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Fleming FF, Yao L, Ravikumar PC, Funk L, Shook BC. Nitrile-containing pharmaceuticals: efficacious roles of the nitrile pharmacophore. J Med Chem 2010; 53:7902-17. [PMID: 20804202 PMCID: PMC2988972 DOI: 10.1021/jm100762r] [Citation(s) in RCA: 1118] [Impact Index Per Article: 79.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Fraser F Fleming
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania 15282-1530, USA.
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