Clinical trial NCT00934934: Candida in the Respiratory Tract Secretions of Critically Ill Patients and The Efficacy of Antifungal Treatment
Official title: Candida in the Respiratory Tract Secretions of Critically Ill Patients and The Efficacy of Antifungal Treatment (The CANTREAT Study): A Prospective, Randomized, Double Blind, Placebo Controlled Pilot Study
Study type: INTERVENTIONAL
Overall status: TERMINATED
Phase: PHASE2
Conditions: Ventilator Associated Pneumonia
Respiratory Tract Infection
Keywords: Candida
ventilator associated pneumonia
respiratory tract infection
antifungal
biomarker
Lead sponsor: Clinical Evaluation Research Unit at Kingston General Hospital
Sponsor class: OTHER
Collaborators: name: The Physicians' Services Incorporated Foundation
name: Queen's University
name: Pfizer
First posted: 2009-07-08
Enrollment: 61
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: OTHER

Brief summary: The purpose of the study is to determine whether the effect of treating Candida spp. isolated in the respiratory tract secretions of patients with a clinical suspicion of ventilator associated pneumonia (VAP) on clinical outcomes will be feasible and supported by biomarker data obtained.

Detailed description: Candida spp. is commonly retrieved from microbiologic specimens of ICU patients with suspected VAP. It has been associated with increased systemic inflammation and worse clinical outcomes. This association may be due to the propensity for Candida to colonize those who are sicker, who have increased levels of systemic inflammation and worse clinical outcomes. However, an alternate possibility is that Candida is more than a colonizer and is responsible for the clinical and biochemical features observed. The only way to clarify the pathogenic role of Candida from this patient population is to treat the organism and see if patients improve compared to an untreated group. The purpose of this research program is to conduct such a study to determine if Candida in respiratory tract secretions should be routinely treated in critically ill patients. Since a definitive randomized controlled trial designed to demonstrate a reduction in mortality would be large, require the commitment of large amount of resources including both time and money, the investigators propose to first conduct a small pilot feasibility study.

Eligible patients will be randomized to receive antifungal treatment with anidulafungin or placebo. Following enrollment, study treatment (or placebo) will be started as soon as possible. When the Candida or yeast organisms have been speciated and/or a susceptibility profile is known, the study medication will be adjusted based on susceptibility patterns. The investigators propose to treat with antifungal therapy for a total of 14 days.

Patients will be followed daily for their entire stay in ICU or till day 28, whichever comes first. For patients discharged from the ICU to the ward, they will be followed until study treatment is complete (i.e. day 14). Mortality will be determined for the ICU stay, hospital stay and at 90 days. The investigators will record admission and discharge dates to ICU, step down units, and to hospital.

All patients will have 13 mL of blood/day drawn at baseline, day 3, day 8 and at the end of the treatment period on day 14 (or last day of treatment). The samples will be prepared on site and shipped to a central lab for processing. The investigators will use the blood specimens to measure markers of inflammation (C-reactive protein, Procalcitonin, and Interleukin-6 and others as determined by the investigators), markers of candida presence (b-glucan and other potential future markers) and markers of immune dysfunction (to be determined by investigators).

Eligibility criteria: Inclusion Criteria:

1. Adult patients (\>18 years old)
2. In the ICU \> 48 hours
3. Mechanically ventilated (\>48 hours)
4. Grow a Candida spp. on respiratory tract secretion culture (either by Bronchoalveolar Lavage or Endotracheal Aspirate) taken on or between 48 hours before or after the day of their suspicion of respiratory tract infection.
5. Develop a clinical suspicion of respiratory tract infection while ventilated as defined by the following criteria (as defined previously in our VAP trial)5:

   * The presence of new, worsening or persistent radiographic features suggestive of pneumonia without another obvious cause AND
   * The presence of any two of the following:

     * Fever \> 38C (core temperature)
     * Leukocytosis (\>11.0 x109/L) or neutropenia (\<3.5 x109/L)
     * Purulent endotracheal aspirates or change in character of aspirates
     * Isolation of pathogenic bacteria from endotracheal aspirates
     * Increasing oxygen requirements

Exclusion Criteria:

1. Patients not expected to be in ICU for more than 72 hours (due to imminent death, withdrawal of aggressive care or discharge).
2. Patients with Candida spp. in the blood or another sterile body site.
3. Patients colonized at other non-pulmonary body site(s) with Candida.
4. Already being treated with antifungal drugs (because of documented fungal infection, pre-emptive therapy, or prophylaxis).
5. Allergy to study drugs (Fluconazole or the Echinocandin on formulary at treating institution).
6. Immunocompromised patients (post-organ transplantation, Acquired Immunodeficiency Syndrome \[AIDS\], neutropenia \[\<1000 absolute neutrophils\], corticosteroids \[\>20 mgs/day of prednisone or equivalent for more than 6 months\]). These patients are excluded since Candida may be more invasive and these patients are much more likely to require systemic antifungal therapy.
7. Patients with fulminant liver failure or end stage liver disease (Child's Class C).
8. Women who are pregnant or lactating.
9. Enrollment in industry sponsored interventional trial (co-enrollment in other academic studies would be allowed with the proviso that there was no potential interaction between the protocols).
10. Prior randomization in this study.

Primary outcomes:
measure: Overall Recruitment Rate
timeFrame: 32 months
Secondary outcomes:
measure: Duration of Stay in ICU
timeFrame: 28 days
measure: Ventilator Free Days
timeFrame: 28 days
measure: ICU Free Days
timeFrame: 28 days
measure: Antibiotic Free Days 28-day Post Randomization
timeFrame: 28 days
measure: Hospital Length of Stay
timeFrame: 90 days
measure: (SOFA) Post Randomization
timeFrame: post randomization
measure: Sequential Procalcitonin
timeFrame: 28 days
measure: C-reactive Protein
timeFrame: 28 days
measure: Interleukin-6
timeFrame: 28 days
measure: B-glucan Levels
timeFrame: 28 days
Other outcomes:
Locations:
city: Hamilton
country: Canada
facility: Hamilton Health Sciences Centre
state: Ontario
city: Kingston
country: Canada
facility: Kingston General Hospital
state: Ontario
city: Ottawa
country: Canada
facility: Ottawa General Hospital
state: Ontario
city: Montreal
country: Canada
facility: Hopital Maisonneuve-Rosemont
state: Quebec
city: Montreal
country: Canada
facility: Hopital du Sacre-Coeur do Montreal
state: Quebec
city: Quebec
country: Canada
facility: Hopital l'Enfant-Jesus
Study officials:
affiliation: Clinical Evaluation Research Unit
name: Daren Heyland, MD
role: STUDY_CHAIR
References:
citation: Safdar N, Dezfulian C, Collard HR, Saint S. Clinical and economic consequences of ventilator-associated pneumonia: a systematic review. Crit Care Med. 2005 Oct;33(10):2184-93. doi: 10.1097/01.ccm.0000181731.53912.d9.
citation: Muscedere JG, Martin CM, Heyland DK. The impact of ventilator-associated pneumonia on the Canadian health care system. J Crit Care. 2008 Mar;23(1):5-10. doi: 10.1016/j.jcrc.2007.11.012.
citation: Van Saene H., Peric M., De La Cal M., Silvestri L.: Pneumonia during Mechanical Ventilation. Anestiologie a Intenzivni Medicina 2004; 15: 89-100.
citation: Chastre J, Fagon JY. Ventilator-associated pneumonia. Am J Respir Crit Care Med. 2002 Apr 1;165(7):867-903. doi: 10.1164/ajrccm.165.7.2105078.
citation: Canadian Critical Care Trials Group. A randomized trial of diagnostic techniques for ventilator-associated pneumonia. N Engl J Med. 2006 Dec 21;355(25):2619-30. doi: 10.1056/NEJMoa052904.
citation: Heyland DK, Dodek P, Muscedere J, Day A, Cook D; Canadian Critical Care Trials Group. Randomized trial of combination versus monotherapy for the empiric treatment of suspected ventilator-associated pneumonia. Crit Care Med. 2008 Mar;36(3):737-44. doi: 10.1097/01.CCM.0B013E31816203D6.
citation: Muscedere J, Dodek P, Keenan S, Fowler R, Cook D, Heyland D; VAP Guidelines Committee and the Canadian Critical Care Trials Group. Comprehensive evidence-based clinical practice guidelines for ventilator-associated pneumonia: prevention. J Crit Care. 2008 Mar;23(1):126-37. doi: 10.1016/j.jcrc.2007.11.014.
citation: Muscedere J, Dodek P, Keenan S, Fowler R, Cook D, Heyland D; VAP Guidelines Committee and the Canadian Critical Care Trials Group. Comprehensive evidence-based clinical practice guidelines for ventilator-associated pneumonia: diagnosis and treatment. J Crit Care. 2008 Mar;23(1):138-47. doi: 10.1016/j.jcrc.2007.12.008.
citation: Muscedere JG, McColl C, Shorr A, Jiang X, Marshall J, Heyland DK; Canadian Critical Care Trials Group. Determinants of outcome in patients with a clinical suspicion of ventilator-associated pneumonia. J Crit Care. 2008 Mar;23(1):41-9. doi: 10.1016/j.jcrc.2007.12.007.
citation: Rello J, Esandi ME, Diaz E, Mariscal D, Gallego M, Valles J. The role of Candida sp isolated from bronchoscopic samples in nonneutropenic patients. Chest. 1998 Jul;114(1):146-9. doi: 10.1378/chest.114.1.146.
citation: el-Ebiary M, Torres A, Fabregas N, de la Bellacasa JP, Gonzalez J, Ramirez J, del Bano D, Hernandez C, Jimenez de Anta MT. Significance of the isolation of Candida species from respiratory samples in critically ill, non-neutropenic patients. An immediate postmortem histologic study. Am J Respir Crit Care Med. 1997 Aug;156(2 Pt 1):583-90. doi: 10.1164/ajrccm.156.2.9612023.
citation: Senn L, Robinson JO, Schmidt S, Knaup M, Asahi N, Satomura S, Matsuura S, Duvoisin B, Bille J, Calandra T, Marchetti O. 1,3-Beta-D-glucan antigenemia for early diagnosis of invasive fungal infections in neutropenic patients with acute leukemia. Clin Infect Dis. 2008 Mar 15;46(6):878-85. doi: 10.1086/527382.
citation: Odabasi Z, Mattiuzzi G, Estey E, Kantarjian H, Saeki F, Ridge RJ, Ketchum PA, Finkelman MA, Rex JH, Ostrosky-Zeichner L. Beta-D-glucan as a diagnostic adjunct for invasive fungal infections: validation, cutoff development, and performance in patients with acute myelogenous leukemia and myelodysplastic syndrome. Clin Infect Dis. 2004 Jul 15;39(2):199-205. doi: 10.1086/421944. Epub 2004 Jun 28.
citation: Wheeler RT, Fink GR. A drug-sensitive genetic network masks fungi from the immune system. PLoS Pathog. 2006 Apr;2(4):e35. doi: 10.1371/journal.ppat.0020035. Epub 2006 Apr 28.
citation: Azoulay E, Timsit JF, Tafflet M, de Lassence A, Darmon M, Zahar JR, Adrie C, Garrouste-Orgeas M, Cohen Y, Mourvillier B, Schlemmer B; Outcomerea Study Group. Candida colonization of the respiratory tract and subsequent pseudomonas ventilator-associated pneumonia. Chest. 2006 Jan;129(1):110-7. doi: 10.1378/chest.129.1.110.
citation: Delisle MS, Williamson DR, Perreault MM, Albert M, Jiang X, Heyland DK. The clinical significance of Candida colonization of respiratory tract secretions in critically ill patients. J Crit Care. 2008 Mar;23(1):11-7. doi: 10.1016/j.jcrc.2008.01.005.
citation: Heyland et al, WATTCH database. Observational study of the clinical characteristics and biomarker profiles of 569 critically ill patients. Analysis ongoing.
citation: Williamson D., Martin A., Perreault M., Delisle M., Muscedere J., Rotstein C., Jiang X., Heyland D. Impact of pulmonary Candida colonization on systemic inflammation in the critically ill. Manuscript in preparation.
citation: Magill SS, Swoboda SM, Johnson EA, Merz WG, Pelz RK, Lipsett PA, Hendrix CW. The association between anatomic site of Candida colonization, invasive candidiasis, and mortality in critically ill surgical patients. Diagn Microbiol Infect Dis. 2006 Aug;55(4):293-301. doi: 10.1016/j.diagmicrobio.2006.03.013. Epub 2006 May 15.
citation: Muller V, Viemann D, Schmidt M, Endres N, Ludwig S, Leverkus M, Roth J, Goebeler M. Candida albicans triggers activation of distinct signaling pathways to establish a proinflammatory gene expression program in primary human endothelial cells. J Immunol. 2007 Dec 15;179(12):8435-45. doi: 10.4049/jimmunol.179.12.8435.
citation: Inoue K, Takano H, Oda T, Yanagisawa R, Tamura H, Ohno N, Adachi Y, Ishibashi K, Yoshikawa T. Candida soluble cell wall beta-D-glucan induces lung inflammation in mice. Int J Immunopathol Pharmacol. 2007 Jul-Sep;20(3):499-508. doi: 10.1177/039463200702000308.
citation: Sakurai T, Ohno N, Yadomae T. Effects of fungal beta-glucan and interferon-gamma on the secretory functions of murine alveolar macrophages. J Leukoc Biol. 1996 Jul;60(1):118-24.
citation: Nseir S, Jozefowicz E, Cavestri B, Sendid B, Di Pompeo C, Dewavrin F, Favory R, Roussel-Delvallez M, Durocher A. Impact of antifungal treatment on Candida-Pseudomonas interaction: a preliminary retrospective case-control study. Intensive Care Med. 2007 Jan;33(1):137-42. doi: 10.1007/s00134-006-0422-0. Epub 2006 Nov 8.
citation: Tschaikowsky K, Hedwig-Geissing M, Schiele A, Bremer F, Schywalsky M, Schuttler J. Coincidence of pro- and anti-inflammatory responses in the early phase of severe sepsis: Longitudinal study of mononuclear histocompatibility leukocyte antigen-DR expression, procalcitonin, C-reactive protein, and changes in T-cell subsets in septic and postoperative patients. Crit Care Med. 2002 May;30(5):1015-23. doi: 10.1097/00003246-200205000-00010.
citation: Williamson D., Albert M., Perreault M., Delisle M., Muscedere J., Rotstein C.Jiang X., Day A. ,Heyland D. Effect of Candida spp. in respiratory tract secretions on systemic inflammation. Submitted to SCCM for Feb. 2009
citation: Presterl E, Lassnigg A, Mueller-Uri P, El-Menyawi I, Graninger W. Cytokines in sepsis due to Candida albicans and in bacterial sepsis. Eur Cytokine Netw. 1999 Sep;10(3):423-30.
citation: Christofilopoulou S, Charvalos E, Petrikkos G. Could procalcitonin be a predictive biological marker in systemic fungal infections?. Study of 14 cases. Eur J Intern Med. 2002 Dec;13(8):493-495. doi: 10.1016/s0953-6205(02)00160-7.
citation: Reade MC, Angus DC. The clinical research enterprise in critical care: what's right, what's wrong, and what's ahead? Crit Care Med. 2009 Jan;37(1 Suppl):S1-9. doi: 10.1097/CCM.0b013e318192074c.
citation: van Teijlingen E, Hundley V. The importance of pilot studies. Nurs Stand. 2002 Jun 19-25;16(40):33-6. doi: 10.7748/ns2002.06.16.40.33.c3214.
citation: Arnold DM, Burns KE, Adhikari NK, Kho ME, Meade MO, Cook DJ; McMaster Critical Care Interest Group. The design and interpretation of pilot trials in clinical research in critical care. Crit Care Med. 2009 Jan;37(1 Suppl):S69-74. doi: 10.1097/CCM.0b013e3181920e33.
citation: Canadian Institutes of Health Research. Available at: www.cihr.ca Accessed February 9, 2009.
citation: Albert M, Williamson D, Muscedere J, Lauzier F, Rotstein C, Kanji S, Jiang X, Hall M, Heyland D. Candida in the respiratory tract secretions of critically ill patients and the impact of antifungal treatment: a randomized placebo controlled pilot trial (CANTREAT study). Intensive Care Med. 2014 Sep;40(9):1313-22. doi: 10.1007/s00134-014-3352-2. Epub 2014 Jul 1.
citation: Williamson DR, Albert M, Perreault MM, Delisle MS, Muscedere J, Rotstein C, Jiang X, Heyland DK. The relationship between Candida species cultured from the respiratory tract and systemic inflammation in critically ill patients with ventilator-associated pneumonia. Can J Anaesth. 2011 Mar;58(3):275-84. doi: 10.1007/s12630-010-9439-5. Epub 2010 Dec 14.