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Cadazolid

Phase 3

Clostridium Difficile Infection | Small molecule | Infectious Disease |Johnson & Johnson|Last Updated: Feb 4, 2025

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials4
Total Enrollment1,353

FDA Designations

No designations recorded

Clinical trial landscape

Cadazolid · 4 trials · 1 indication

Phase 3 2Phase 2 1Phase 1 1
NCT01987895Efficacy and Safety of Cadazolid Versus Vancomycin in Subjects With Clostridium Difficile - Associated DiarrheaClostridium Difficile Infection
COMPLETED632 Analytics
NCT01983683Efficacy and Safety of Cadazolid Versus Vancomycin in Subjects With Clostridium Difficile-associated DiarrheaClostridium Difficile Infection
COMPLETED631 Analytics
PHASE3COMPLETED
Efficacy and Safety of Cadazolid Versus Vancomycin in Subjects With Clostridium Difficile - Associated Diarrhea
Clostridium Difficile InfectionUnlock trial analytics
PHASE3COMPLETED
Efficacy and Safety of Cadazolid Versus Vancomycin in Subjects With Clostridium Difficile-associated Diarrhea
Clostridium Difficile InfectionUnlock trial analytics

Study Endpoints

Primary Endpoints

Clinical Cure Rate (CCR) in the Modified Intent-to-treat Population
Up to Day 12 on average (end-of-treatment + 2 days)

Clinical Cure (CC) is defined as: • Resolution of Diarrhea (≤ 3 unformed bowel movement per day for at least 2 consecutive days) on study treatment and maintained for 2 days after end-of-treatment (EOT), AND • No additional antimicrobial treatment active against Clostridium difficile-associated diarrhea (CDAD) or fecal microbiota transplant between first dose of study drug and 2 days after EOT. CCR is the percentage of subjects with Clinical Cure. Analyses are performed on two analysis sets. Results on the modified intent-to-treat set (mITT) are reported below.

Clinical Cure Rate (CCR) in the Per-protocol Population
Up to Day 12 on average (end-of-treatment + 2 days)

Clinical Cure (CC) is defined as: • Resolution of Diarrhea (≤ 3 unformed bowel movement per day for at least 2 consecutive days) on study treatment and maintained for 2 days after end-of-treatment (EOT), AND • No additional antimicrobial treatment active against Clostridium difficile-associated diarrhea (CDAD) or fecal microbiota transplant between first dose of study drug and 2 days after EOT. CCR is the percentage of subjects with Clinical Cure. Analyses are performed on two analysis sets. Results on the per-protocol set (PPS) are reported below.

Clinical cure rate at test-of-cure
Day 13 or 24-72 hours after end of treatment

Percentages of subjects with clinical cure are calculated, with clinical cure being defined as resolution of diarrhea with no further Clostridium Difficile-associated diarrhea (CDAD) treatment required at test-of-cure (TOC) visit. Resolution of diarrhea was defined as the occurrence of ≤ 2 semi-formed or formed stools during 24 h for at least 2 consecutive 24 h periods.

Maximum plasma concentration (Cmax) of cadazolid
144 hours

Blood samples for pharmacokinetic analysis taken immediately prior to dosing with cadazolid, and at 0.5, 1, 2, 4, 6, 8, 12, 24, 36, 48, 72, 96, 120, and 144 hours after dosing. Cmax was calculated on the basis of the blood sampling time points.

Time to reach maximum plasma concentration (tmax) of cadazolid
144 hours

Blood samples for pharmacokinetic analysis taken immediately prior to dosing with cadazolid, and at 0.5, 1, 2, 4, 6, 8, 12, 24, 36, 48, 72, 96, 120, and 144 hours after dosing. tmax was calculated on the basis of the blood sampling time points.

Area under the plasma concentration-time curve (AUC(0-144h)) of cadazolid
144 hours

Blood samples for pharmacokinetic analysis taken immediately prior to dosing with cadazolid, and at 0.5, 1, 2, 4, 6, 8, 12, 24, 36, 48, 72, 96, 120, and 144 hours after dosing. AUC(0-144) was calculated according to the linear trapezoidal rule using the measured concentration-time values above the limit of quantification.

Unchanged cadazolid in urine up to Day 7
144 hours

Urine was collected into standard-weight polyethylene containers over the following time intervals: 0-12 h, 12-24 h, 24-36 h, 36-48 h, 48-72 h, 72-96 h, 96-120 h, and 120-144 h. The concentration of cadazolid was determined using validated liquid chromatography-tandem mass spectrometry assays. The amount of drug excreted in the urine was obtained by multiplying the concentration of drug by the volume of matrix collected.

Unchanged cadazolid in faeces up to Day 7
144 hours

Faeces were collected in pre-weighed polypropylene boxes. The concentration of cadazolid was determined using validated liquid chromatography-tandem mass spectrometry assays. The amount of drug excreted in the faeces was obtained by multiplying the concentration of drug by the volume of matrix collected.

Secondary Endpoints

Sustained Cure Rate (SCR) in the Modified Intent-to-treat Population
Between Day 38 and Day 42 on average (end-of-treatment + 28-32 days)
Kaplan-Meier Estimates for Resolution of Diarrhea
Up to Day 10
Change From Baseline to Day 3 in Clostridium Difficile Infection (CDI) Daily Symptoms Patient-Reported Outcome (CDI-DaySyms PRO) Domain Scores
Day 1 (baseline) and Day 3
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
CadazolidEXPERIMENTALSubjects receive oral cadazolid 250 mg twice daily (bid) and oral vancomycin-matching placebo 4 times per day (qid) for 10 days
VancomycinACTIVE_COMPARATORSubjects receive oral vancomycin 125 mg qid and oral cadazolid-matching placebo bid for 10 days
Cadazolid 250 mgEXPERIMENTALSubjects received 250 mg of reconstituted cadazolid suspension twice daily and one placebo-matching vancomycin capsule four times daily for 10 days
Cadazolid 500 mgEXPERIMENTALSubjects received 500 mg of reconstituted cadazolid suspension twice daily and one placebo-matching vancomycin capsule four times daily for 10 days
Cadazolid 1000 mgEXPERIMENTALSubjects received 1000 mg of reconstituted cadazolid suspension twice daily and one placebo-matching vancomycin capsule four times daily for 10 days
Vancomycin 125 mgACTIVE_COMPARATORSubjects received one vancomycin capsule (125 mg) four times daily and reconstituted placebo-matching cadazolid suspension twice daily for 10 days

Interventions

NameTypeDescription
CadazolidDRUGCadazolid 250 mg as oral suspension twice daily.
VancomycinDRUGVancomycin 125 mg as oral capsules 4 times daily.
Cadazolid-matching placeboDRUGPlacebo matching cadazolid and administered orally twice daily
Vancomycin-matching placeboDRUGPlacebo capsules matching vancomycin and administered orally 4 times per day
Placebo-matching cadazolidDRUGPlacebo of cadazolid powder for oral suspension
Placebo-matching vancomycinDRUGPlacebo of vancomycin capsules
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo

Inclusion Criteria: * Signed Informed Consent. * Male or female ≥ 18 years of age. Females of childbearing potential must agree to use an adequate and reliable method of contraception. * Subject with a diagnosis of mild-moderate or severe CDAD (first occurrence or first recurrence within 3 months) ...

Countries:United StatesCanadaGermanyItalySwedenUnited KingdomCroatia
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Frequently asked questions about Cadazolid

What is Cadazolid used for?

Cadazolid is an investigational small molecule being developed for the treatment of Clostridium difficile infection, also known as C. diff. It is designed to address Clostridium difficile-associated diarrhea. The drug is still in clinical development and has not been approved by regulatory authorities.

What does Cadazolid target?

Cadazolid is an antibiotic that targets Clostridium difficile bacteria. It works by inhibiting bacterial protein synthesis, which prevents the bacteria from growing and multiplying. This mechanism is intended to treat Clostridium difficile infection, a serious gastrointestinal condition.

Who makes Cadazolid?

Cadazolid is being developed by Johnson & Johnson, a multinational pharmaceutical company. The company is listed on the stock exchange under the ticker symbol JNJ. Johnson & Johnson has conducted clinical trials to evaluate the safety and efficacy of Cadazolid in patients with Clostridium difficile infection.

What phase is Cadazolid in?

Cadazolid has completed Phase 3 clinical trials for Clostridium difficile infection. The drug has undergone testing in multiple phases, including Phase 1, Phase 2, and Phase 3 studies. However, it remains an investigational drug and has not received FDA approval.

What clinical trials is Cadazolid in?

Cadazolid has been studied in four completed clinical trials. These include NCT01222702, a Phase 2 study with 84 participants; NCT01983683 and NCT01987895, both Phase 3 trials with over 600 participants each; and NCT02053181, a Phase 1 pharmacokinetic study with 6 participants. All trials focused on Clostridium difficile infection.

Is Cadazolid the same as vancomycin?

No, Cadazolid is not the same as vancomycin. Cadazolid is an investigational antibiotic being developed by Johnson & Johnson, while vancomycin is an established antibiotic used as a standard treatment for Clostridium difficile infection. In clinical trials, Cadazolid was compared against vancomycin as an active control.