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Trial · NCT03667690

Study of Rezafungin Compared to Caspofungin in Subjects With Candidemia and/or Invasive Candidiasis

NCT03667690, Phase 3, Completed, Cidara Therapeutics Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA); results first posted 2023-01-06

3 sourcestrials-2026-11-12-0.5.0

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ConductScience Library. Study of Rezafungin Compared to Caspofungin in Subjects With Candidemia and/or Invasive Candidiasis. Trials, record NCT03667690. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT03667690

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Trial

As registered on ClinicalTrials.gov, in the graph's capture of the registry.

Title
Study of Rezafungin Compared to Caspofungin in Subjects With Candidemia and/or Invasive Candidiasis
NCT number
NCT03667690
Status
Completed
Phases
Phase 3
Enrollment
199 participants, actual
Lead sponsor
Cidara Therapeutics Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
Conditions
Candidemia, Mycoses, Fungal Infection, Invasive Candidiases
Interventions
Rezafungin for Injection, Caspofungin, Fluconazole, intravenous placebo, oral placebo
First posted
2018-09-12
Last updated
2023-01-06
Results first posted
2023-01-06

Source ClinicalTrials.gov

Registered outcomes13

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryAll-Cause Mortality (US FDA Only)Day 30 (-2 days)The number and percentage of subjects in each treatment group who are alive and deceased (or with missing data) in the mITT population.
PrimaryGlobal Response as Assessed by Data Review Committee (EU European Medicines Agency [EMA] Only)Day 14 (±1 day)
The number and percentage of subjects in each treatment group who have a global response of cure (clinical cure as assessed by the Investigator, radiological cure \[for qualifying invasive candidiasis subjects at baseline\], and mycological eradication, as confirmed by the Data Review Committee \[DRC\]), failure and indeterminate in the mITT population. A global response of cure is indicative of an efficacious outcome and the desired result, whereas a response of failure is indicative of a non-efficacious outcome and the undesired response. Indeterminate responses indicate there was not enough data obtained to determine if the response was cure or failure. Definitions for the global responses of cure, failure, and indeterminate are complex. Detailed definitions for the possible responses to this outcome measure type are provided in Table 7 (Global Response) of the clinical protocol.
SecondaryGlobal Response as Assessed by Data Review Committee (US FDA Only)Day 14 (±1 day)
The number and percentage of subjects in each treatment group who have a global response of cure (clinical cure as assessed by the Investigator, radiological cure \[for qualifying invasive candidiasis subjects at baseline\], and mycological eradication, as confirmed by the Data Review Committee \[DRC\]), failure and indeterminate in the mITT population. A global response of cure is indicative of an efficacious outcome and the desired result, whereas a response of failure is indicative of a non-efficacious outcome and the undesired response. Indeterminate responses indicate there was not enough data obtained to determine if the response was cure or failure. Definitions for the global responses of cure, failure, and indeterminate are complex. Detailed definitions for the possible responses to this outcome measure type are provided in Table 7 (Global Response) of the clinical protocol.
SecondaryAll-Cause Mortality (EU EMA Only)Day 30 (-2 days)The number and percentage of subjects in each treatment group who are alive and deceased (or with missing data) in the mITT population.
SecondaryComparison of Global Response (as Assessed by the DRC) by VisitDay 5, Day 30 (-2 days), End of Treatment (EOT) (≤2 days of last dose) and Follow-up (Days 52-59)
The number and percentage of subjects in each treatment group who have a global response of cure (clinical cure as assessed by the Investigator, radiological cure \[for qualifying invasive candidiasis subjects at baseline\], and mycological eradication, as confirmed by the Data Review Committee \[DRC\]), failure and indeterminate in the mITT population. A global response of cure is indicative of an efficacious outcome and the desired result, whereas a response of failure is indicative of a non-efficacious outcome and the undesired response. Indeterminate responses indicate there was not enough data obtained to determine if the response was cure or failure. Definitions for the global responses of cure, failure, and indeterminate are complex. Detailed definitions for the possible responses to this outcome measure type are provided in Table 7 (Global Response) of the clinical protocol.
SecondaryComparison of Mycological Eradication by VisitDay 5, Day 14 (±1 day), Day 30 (-2 days), End of Treatment (EOT) (≤2 days of last dose), and Follow-up (Days 52-59)
The number and percentage of subjects in each treatment group who have a mycological response of eradication, failure, or indeterminate in the mITT population. A mycological response of eradication means clearance of objective evidence of infection and is indicative of an efficacious outcome and the desired result, whereas a response of failure is indicative of a non-efficacious outcome and the undesired response. Indeterminate responses indicate there was not enough data obtained to determine if the response was eradication or failure. Definitions for the mycological responses of eradication, failure, and indeterminate are complex. Detailed definitions for the possible responses to this outcome measure type are provided in Table 8 (Mycological Response) of the clinical protocol. Note: Eradication includes both documented and presumed eradication.
SecondaryComparison of Investigators' Assessment of Clinical Response by VisitDay 5, Day 14 (±1 day), Day 30 (-2 days), End of Treatment (EOT) (≤2 days of last dose), and Follow-up (Days 52-59)
The number and percentage of subjects in each treatment group for whom the Investigator determined a clinical response of cure, failure, or indeterminate in the mITT population. A clinical response of cure, as assessed by the Investigator, is indicative of an efficacious outcome and the desired result, whereas a response of failure is indicative of a non-efficacious outcome and the undesired response. Indeterminate responses indicate there was not enough data obtained to determine if the response was cure or failure. Definitions for the clinical responses of cure, failure, and indeterminate are complex. Detailed definitions for the possible responses to this outcome measure type are provided in Table 9 (Investigator's Assessment of Clinical Response) of the clinical protocol.
SecondaryComparison of Radiological Response by Investigator by VisitDay 5, Day 14 (±1 day), Day 30 (-2 days), End of Treatment (EOT) (≤2 days of last dose), and Follow-up (Days 52-59)
The number and percentage of subjects with invasive candidiasis (documented by radiologic/imaging evidence at baseline) in each treatment group who have a radiological response (as assessed by the Investigator) of cure, failure, and indeterminate in the mITT population. A radiological response of cure is indicative of an efficacious outcome and the desired result, whereas a response of failure is indicative of a non-efficacious outcome and the undesired response. Indeterminate responses indicate there was not enough data obtained to determine if the response was cure or failure. Definitions for the radiological responses of cure, failure, and indeterminate are complex. Detailed definitions for the possible responses to this outcome measure type are provided in Table 10 (Radiological Response) of the clinical protocol.
SecondaryNumber of Subjects With Treatment-Emergent Adverse Events [Safety and Tolerability]Day 1 through Follow-up Visit (Days 52-59)
The number and percentage of subjects in each treatment group that experienced at least one treatment-emergent adverse event (TEAE) based on clinical chemistry, hematology and urine analysis laboratory test, vital sign, physical exams and electrocardiogram (ECG) abnormalities. Notes: A subject with multiple adverse events (AEs) was counted only once. TEAE was defined as an AE that occurred during or after study drug administration and up through the Follow-up visit. The maximum severity and strongest relationship were counted for subjects with multiple events.
SecondaryEvaluate Pharmacokinetics (Cmax)Day 1, 10 minutes before the end of infusionEvaluate the maximum plasma concentration (Cmax) of rezafungin for injection.

Outcomes13

Each outcome the trial posted results for, in ClinicalTrials.gov's words.

TypeOutcomeTime framePopulationUnitsMeasured as
PRIMARYAll-Cause Mortality (US FDA Only)Day 30 (-2 days)
The modified Intent-to-Treat (mITT) Population includes all subjects who had a documented Candida infection based on central laboratory evaluation of a blood culture or a culture from a normally sterile site obtained ≤4 days (96 hours) before randomization and received ≥1 dose of study drug.
ParticipantsCOUNT_OF_PARTICIPANTS
PRIMARYGlobal Response as Assessed by Data Review Committee (EU European Medicines Agency [EMA] Only)Day 14 (±1 day)
The modified Intent-to-Treat (mITT) Population includes all subjects who had a documented Candida infection based on central laboratory evaluation of a blood culture or a culture from a normally sterile site obtained ≤4 days (96 hours) before randomization and received ≥1 dose of study drug.
ParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYGlobal Response as Assessed by Data Review Committee (US FDA Only)Day 14 (±1 day)
The modified Intent-to-Treat (mITT) Population includes all subjects who had a documented Candida infection based on central laboratory evaluation of a blood culture or a culture from a normally sterile site obtained ≤4 days (96 hours) before randomization and received ≥1 dose of study drug.
ParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYAll-Cause Mortality (EU EMA Only)Day 30 (-2 days)
The modified Intent-to-Treat (mITT) Population includes all subjects who had a documented Candida infection based on central laboratory evaluation of a blood culture or a culture from a normally sterile site obtained ≤4 days (96 hours) before randomization and received ≥1 dose of study drug.
ParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYComparison of Global Response (as Assessed by the DRC) by VisitDay 5, Day 30 (-2 days), End of Treatment (EOT) (≤2 days of last dose) and Follow-up (Days 52-59)
The modified Intent-to-Treat (mITT) Population includes all subjects who had a documented Candida infection based on central laboratory evaluation of a blood culture or a culture from a normally sterile site obtained ≤4 days (96 hours) before randomization and received ≥1 dose of study drug.
ParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYComparison of Mycological Eradication by VisitDay 5, Day 14 (±1 day), Day 30 (-2 days), End of Treatment (EOT) (≤2 days of last dose), and Follow-up (Days 52-59)
The modified Intent-to-Treat (mITT) Population includes all subjects who had a documented Candida infection based on central laboratory evaluation of a blood culture or a culture from a normally sterile site obtained ≤4 days (96 hours) before randomization and received ≥1 dose of study drug.
ParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYComparison of Investigators' Assessment of Clinical Response by VisitDay 5, Day 14 (±1 day), Day 30 (-2 days), End of Treatment (EOT) (≤2 days of last dose), and Follow-up (Days 52-59)
The modified Intent-to-Treat (mITT) Population includes all subjects who had a documented Candida infection based on central laboratory evaluation of a blood culture or a culture from a normally sterile site obtained ≤4 days (96 hours) before randomization and received ≥1 dose of study drug.
ParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYComparison of Radiological Response by Investigator by VisitDay 5, Day 14 (±1 day), Day 30 (-2 days), End of Treatment (EOT) (≤2 days of last dose), and Follow-up (Days 52-59)
The modified Intent-to-Treat (mITT) Population includes all subjects who had a documented Candida infection based on central laboratory evaluation of a blood culture or a culture from a normally sterile site obtained ≤4 days (96 hours) before randomization and received ≥1 dose of study drug.
ParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYNumber of Subjects With Treatment-Emergent Adverse Events [Safety and Tolerability]Day 1 through Follow-up Visit (Days 52-59)
The Safety Population includes all subjects who received any amount of the study drug. Safety analyses were performed on the Safety Population. Subjects who received the wrong study drug for their entire course of study drug were analyzed in the treatment group based on the drug received. Subjects who received the wrong study drug for part of their course of study drug were analyzed in the treatment group based on majority of (i.e., most frequent) doses received.
ParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYEvaluate Pharmacokinetics (Cmax)Day 1, 10 minutes before the end of infusion
The Pharmacokinetic (PK) Population includes all subjects who received any amount of study drug and had at least one blood sample with measurable concentrations.~Note: Although blood samples were collected from all subjects receiving study drug, only PK samples from subjects receiving rezafungin for injection were analyzed.
micrograms/milliliterMEAN

Results by group156

Each measurement the trial posted, group by group, in the words and numbers it posted.

OutcomeGroupCategoryValueSpreadUnits
All-Cause Mortality (US FDA Only)Group 1: Rezafungin for InjectionDeceased: Known Deceased (subjects who died on or before Day 30)19Participants
All-Cause Mortality (US FDA Only)Group 2: CaspofunginDeceased: Known Deceased (subjects who died on or before Day 30)17Participants
All-Cause Mortality (US FDA Only)Group 1: Rezafungin for InjectionDeceased: Unknown Survival Status3Participants
All-Cause Mortality (US FDA Only)Group 2: CaspofunginDeceased: Unknown Survival Status3Participants
All-Cause Mortality (US FDA Only)Group 1: Rezafungin for InjectionAlive71Participants
All-Cause Mortality (US FDA Only)Group 2: CaspofunginAlive74Participants
Global Response as Assessed by Data Review Committee (EU European Medicines Agency [EMA] Only)Group 1: Rezafungin for InjectionCure55Participants
Global Response as Assessed by Data Review Committee (EU European Medicines Agency [EMA] Only)Group 2: CaspofunginCure57Participants
Global Response as Assessed by Data Review Committee (EU European Medicines Agency [EMA] Only)Group 1: Rezafungin for InjectionFailure28Participants
Global Response as Assessed by Data Review Committee (EU European Medicines Agency [EMA] Only)Group 2: CaspofunginFailure29Participants

Participant flow8

How many started, completed or left each group, period by period.

PeriodMilestoneGroupParticipantsUnits counted
Overall StudySTARTEDGroup 1: Rezafungin for Injection100
Overall StudySTARTEDGroup 2: Caspofungin99
Overall StudyCompleted Study Drug Regimen Through Study Day 14Group 1: Rezafungin for Injection66
Overall StudyCompleted Study Drug Regimen Through Study Day 14Group 2: Caspofungin71
Overall StudyCOMPLETEDGroup 1: Rezafungin for Injection59
Overall StudyCOMPLETEDGroup 2: Caspofungin59
Overall StudyNOT COMPLETEDGroup 1: Rezafungin for Injection41
Overall StudyNOT COMPLETEDGroup 2: Caspofungin40

Adverse events250

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

TypeEventOrgan systemGroupAffectedAt riskEvents
otherPyrexiaGeneral disordersGroup 1: Rezafungin for Injection1498
otherPyrexiaGeneral disordersGroup 2: Caspofungin598
otherHypokalaemiaMetabolism and nutrition disordersGroup 1: Rezafungin for Injection1298
otherHypokalaemiaMetabolism and nutrition disordersGroup 2: Caspofungin998
otherAnaemiaBlood and lymphatic system disordersGroup 1: Rezafungin for Injection998
otherAnaemiaBlood and lymphatic system disordersGroup 2: Caspofungin998
otherHypomagnesaemiaMetabolism and nutrition disordersGroup 1: Rezafungin for Injection798
otherHypomagnesaemiaMetabolism and nutrition disordersGroup 2: Caspofungin398
otherDiarrhoeaGastrointestinal disordersGroup 1: Rezafungin for Injection698
otherDiarrhoeaGastrointestinal disordersGroup 2: Caspofungin798

Adverse event totals6

The totals the trial posted for each group.

TotalGroupAffectedAt risk
Total, all-cause mortalityGroup 1: Rezafungin for Injection2998
Total, all-cause mortalityGroup 2: Caspofungin2598
Total, other adverse eventsGroup 1: Rezafungin for Injection9098
Total, other adverse eventsGroup 2: Caspofungin6698
Total, serious adverse eventsGroup 1: Rezafungin for Injection5598
Total, serious adverse eventsGroup 2: Caspofungin5298

Papers10

The papers the trial lists on ClinicalTrials.gov.

PMIDListed asSource
33438477DERIVEDPubMed
36442484DERIVEDPubMed
38008099DERIVEDPubMed
38502709DERIVEDPubMed
38985561DERIVEDPubMed
39259571DERIVEDPubMed
39468640DERIVEDPubMed
39529079DERIVEDPubMed
41194465DERIVEDPubMed
41940006DERIVEDPubMed

Grants0

The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.

None in this release.

Trial comparisons2

Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.

ComparisonSource
Group 1: Rezafungin for Injection vs Group 2: Caspofungin: deaths from any causeTrial comparisons
Group 1: Rezafungin for Injection vs Group 2: Caspofungin: serious adverse eventsTrial comparisons

Tests0

The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.

None in this release.

Data dates

The day each source was copied for this release.

ClinicalTrials.gov
2026-11-12
ClinicalTrials.gov
Results, from AACT
2026-03-23
AACT
NIH grant links
2026-11-13
NIH RePORTER

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

For software

Read this trial from software.

The record and each of its lists are JSON, twenty rows a page. No key.

GET https://conductscience.org/api/trials/v1/NCT03667690

GET https://conductscience.org/api/trials/v1/NCT03667690/results?page=2