Evaluation of anidulafungin in the treatment of intra-abdominal candidiasis: a pooled analysis of patient-level data from 5 prospective studies.

The incidence of nosocomial invasive fungal infections involving Candida spp. has increased markedly in recent years in patients undergoing abdominal surgery. This post hoc analysis aimed to determine the efficacy and safety of anidulafungin treatment in patients with intra-abdominal candidiasis (IAC) from five prospective studies (one comparative and four open-label) of adult surgical patients with microbiologically confirmed Candida intra-abdominal infection. Patients received an intravenous (IV) loading dose of anidulafungin 200 mg, followed by a daily 100-mg maintenance dose. Per study protocols, some patients could be switched to an oral azole after ≥ 5 or ≥ 10 days of IV treatment. Antifungal treatment was maintained for ≥ 14 days after the last positive Candida culture and resolution of symptoms. The global response rate (GRR) at the end of IV treatment (EOIVT) was the primary endpoint. GRR at the end of therapy (EOT), all-cause mortality at days 14 and 28, and safety was also evaluated. Seventy-nine patients had IAC from peritoneal fluid or hepatobiliary tract. C. albicans (72.2%) and C. glabrata (32.9%) were the most common pathogens. Overall GRR was 73.4% and 67.1% at EOIVT and EOT, respectively. All-cause mortality was 17.7% at day 14 and 24.1% at day 28 in the modified intent-to-treat population. Anidulafungin was well tolerated in this population, with most adverse events mild or moderate in severity. In these patients with IAC, anidulafungin showed a GRR at EOIVT similar to the anidulafungin registrational trial, and the results of our analysis confirmed the known safety profile of anidulafungin. ClinicalTrials.gov registration number NCT00496197, registered July 3, 2007, https://clinicaltrials.gov/ct2/show/study/NCT00496197 ; ClinicalTrials.gov registration number NCT00548262, registered October 19, 2007, https://clinicaltrials.gov/ct2/show/record/NCT00548262 ; ClinicalTrials.gov registration number NCT00537329, registered September 25, 2007, https://clinicaltrials.gov/ct2/show/record/NCT00537329 ; ClinicalTrials.gov registration number NCT00689338, registered May 29, 2008, https://clinicaltrials.gov/ct2/show/study/NCT00689338 ; ClinicalTrials.gov registration number NCT00805740, registered November 26, 2008, https://clinicaltrials.gov/ct2/show/NCT00805740.

Anidulafungin for the treatment of candidaemia caused by Candida parapsilosis: Analysis of pooled data from six prospective clinical studies.

Concerns with echinocandin use for infections caused by Candida parapsilosis complex species have driven the need for data to support echinocandin clinical efficacy in such patients. Data from six prospective studies were pooled to assess efficacy and safety of anidulafungin in patients with candidaemia caused by C. parapsilosis. Patient-level data were pooled from patients with microbiologically confirmed candidaemia due to C. parapsilosis treated with anidulafungin. Patients received a 200 mg intravenous (IV) loading dose of anidulafungin (day 1) and 100 mg daily thereafter. IV treatment could be switched to oral azole therapy after ≥5 or ≥10 days. Primary endpoint was global response at end of IV therapy (EOIVT). Seventy patients had candidaemia caused by C. parapsilosis. Global response was 77.1% (95% CI: 67.3, 87.0) at EOIVT and 70.0% (95% CI: 59.3, 80.7) at end of treatment. Three of 55 isolates (with MICs available) were resistant to anidulafungin (MIC ≥8 mg/L). All-cause mortality was 5.7% (n=4/70) by day 14 and 14.3% (n=10/70) by day 28. IV anidulafungin was effective for the treatment of C. parapsilosis candidaemia in this population, consistent with efficacy previously demonstrated for other Candida species. (ClinicalTrials.gov identifiers: NCT00496197, NCT00548262, NCT00537329, NCT00689338, NCT00806351, NCT00805740).

Safety, Efficacy and Pharmacokinetics of Anidulafungin in Patients 1 Month to <2 Years of Age With Invasive Candidiasis, Including Candidemia.

Nineteen patients 1 month to <2 years of age with (n = 16) or at high risk of (n = 3) invasive candidiasis received anidulafungin for 5-35 days (3 mg/kg day 1, 1.5 mg/kg daily thereafter) followed by optional fluconazole (NCT00761267). Most treatment-emergent adverse events were mild/moderate, and no treatment-related deaths occurred. End of intravenous therapy global response success rate was 68.8%. Pharmacokinetics were similar to adult patients.

A Prospective, Open-label Study to Assess the Safety, Tolerability and Efficacy of Anidulafungin in the Treatment of Invasive Candidiasis in Children 2 to <18 Years of Age.

BACKGROUND: Treatment with an echinocandin is recommended as first-line therapy for patients with invasive candidiasis (ICC) including candidemia. Little is known about the efficacy and safety of anidulafungin in children with ICC. METHODS: Eligible patients with ICC 2 to <18 years old were enrolled into this prospective, open-label, noncomparative, international study (NCT00761267) and received anidulafungin for 10-35 days (3 mg/kg on day 1, 1.5 mg/kg daily thereafter). Safety was assessed through week 6 follow-up. Efficacy, measured by global response (based on clinical and microbiologic responses), was assessed at end of intravenous treatment (EOIVT), end of treatment, weeks 2 and 6 follow-up. RESULTS: Forty-nine patients (n = 19, 2 to <5 years; n = 30, 5 to <18 years) received ≥1 dose of anidulafungin (median 11 days; range 1-35 days) and were assessed for safety. Among 48 patients with a Candida species isolated, C. albicans (37.5%), C. parapsilosis (25.0%), C. tropicalis (14.6%) and C. lusitaniae (10.4%) were the most frequent Candida spp. All patients reported ≥1 treatment-emergent adverse event, with diarrhea (22.4%), vomiting (24.5%) and pyrexia (18.4%) being most frequent. Five patients discontinued treatment because of adverse events, of which 4 discontinuations were considered related to anidulafungin. All-cause mortality was 8.2% (4/49) by EOIVT and 14.3% (7/49) by week 6 follow-up. None of 7 deaths during the study period were considered treatment related. Global response success rate was 70.8% at EOIVT. CONCLUSIONS: These data support the use of anidulafungin as a treatment option for ICC in children 2 to <18 years old at the studied dose.

Safety, Efficacy, and Exposure-Response of Voriconazole in Pediatric Patients With Invasive Aspergillosis, Invasive Candidiasis or Esophageal Candidiasis.

BACKGROUND: Data on safety and efficacy of voriconazole for invasive aspergillosis (IA) and invasive candidiasis/esophageal candidiasis (IC/EC) in pediatric patients are limited. METHODS: Patients aged 2-<18 years with IA and IC/EC were enrolled in 2 prospective open-label, non-comparative studies of voriconazole. Patients followed dosing regimens based on age, weight and indication, with adjustments permitted. Treatment duration was 6-12 weeks for IA patients, ≥14 days after last positive Candida culture for IC patients and ≥7 days after signs/symptoms resolution for EC patients. Primary analysis for both the studies was safety and tolerability of voriconazole. Secondary end points included global response success at week 6 and end of treatment (EOT), all-causality mortality and time to death. Voriconazole exposure-response relationship was explored. RESULTS: Of 53 voriconazole-treated pediatric patients (31 IA; 22 IC/EC), 14 had proven/probable IA, 7 had confirmed IC and 10 had confirmed EC. Treatment-related hepatic and visual adverse events, respectively, were reported in 22.6% and 16.1% of IA patients, and 22.7% and 27.3% of IC/EC patients. All-causality mortality in IA patients was 14.3% at week 6; no deaths were attributed to voriconazole. No deaths were reported for IC/EC patients. Global response success rate was 64.3% (week 6 and EOT) in IA patients and 76.5% (EOT) in IC/EC patients. There was no association between voriconazole exposure and efficacy; however, a slight positive association between voriconazole exposure and hepatic adverse events was established. CONCLUSIONS: Safety and efficacy outcomes in pediatric patients with IA and IC/EC were consistent with previous findings in adult patients.