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Phase II Study of Oral Nafithromycin in CABP

A Phase II, Randomized, Double-Blind, Multicenter, Comparative Study to Determine the Safety, Tolerability, Pharmacokinetics and Efficacy of Oral Nafithromycin Versus Oral Moxifloxacin in the Treatment of Community-Acquired Bacterial Pneumonia (CABP) in Adults

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02903836
Enrollment
231
Registered
2016-09-16
Start date
2016-11-18
Completion date
2017-07-08
Last updated
2019-12-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Community-Acquired Bacterial Pneumonia (CABP)

Brief summary

Study to Determine the Safety, Tolerability, Pharmacokinetics and Efficacy of Oral Nafithromycin Versus Oral Moxifloxacin in the Treatment of Community-Acquired Bacterial Pneumonia (CABP) in Adults

Interventions

DRUGNafithromycin 800 mg 3 days
DRUGNafithromycin 800 mg 5 days
DRUGMoxifloxacin 400 mg

Sponsors

ACM
CollaboratorUNKNOWN
Wockhardt
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
FACTORIAL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Meet the clinical criteria for CABP based on following: 1. Clinical symptoms (new or worsening) 2. Vital sign abnormalities 3. Laboratory abnormalities 4. Radiographic evidence of CABP 5. PORT score

Exclusion criteria

1. Subjects with any of the following confirmed or suspected types of pneumonia: 1. Aspiration pneumonia 2. Hospital-acquired bacterial pneumonia (HABP) 3. Healthcare-associated bacterial pneumonia (HCAP) 4. Ventilator-associated bacterial pneumonia (VABP) 5. Pneumonia that may be caused by pathogen(s) resistant to either study drug 2. Receipt of 1 or more dose(s) of a potentially effective systemic antibacterial treatment for treatment of the current CABP 3. Suspected or confirmed non-infectious causes of pulmonary infiltrates 4. Subjects requiring concomitant adjunctive or additional potentially-effective systemic antibacterial treatment for management of CABP

Design outcomes

Primary

MeasureTime frameDescription
Clinical Response in the ITT PopulationDay 4 from start of drug administrationThe primary efficacy endpoint was clinical response (response, non-response, or indeterminate) at Day 4, tested in the ITT population. Clinical response was determined programmatically using the investigator's assessment of CABP symptoms entered into the eCRF. The severity of the subject CABP symptoms of dyspnea (shortness of breath), cough, production of purulent sputum, and pleuritic chest pain were evaluated on a 4-point scale (absent, mild, moderate, or severe) based upon the CABP Symptom Severity Guidance

Secondary

MeasureTime frameDescription
Clinical Response in the Micro-ITT PopulationDay 4 from start of drug administrationClinical response (response, non-response, or indeterminate) at Day 4 was also tested in the micro-ITT population as a secondary efficacy endpoint. Clinical response was determined programmatically using the investigator's assessment of CABP symptoms entered into the eCRF. The severity of the subject CABP symptoms of dyspnea (shortness of breath), cough, production of purulent sputum, and pleuritic chest pain were evaluated on a 4-point scale (absent, mild, moderate, or severe) based upon the CABP Symptom Severity Guidance

Countries

United States

Participant flow

Recruitment details

2 subjects withdrew consent prior to receiving study drug and 7 subjects whose PK results showed no detectable level of either nafithromycin or moxifloxacin hence 9 subjects excluded from the Safety population.

Participants by arm

ArmCount
Nafithromycin 800 mg 3 Days
PO q24h for 3 days; subjects will receive matching placebo , to maintain the blind Nafithromycin 800 mg 3 days
74
Nafithromycin 800 mg 5 Days
PO q24h for 5 days; subjects will receive matching placebo, to maintain the blind Nafithromycin 800 mg 5 days
73
Moxifloxacin 400 mg 7 Days
PO q24h for 7 days;subjects will also receive two nafithromycin placebo tablets PO q24h on Days 1 through Day 7 to maintain the blind Moxifloxacin 400 mg 7 days
77
Total224

Baseline characteristics

CharacteristicNafithromycin 800 mg 3 DaysTotalMoxifloxacin 400 mg 7 DaysNafithromycin 800 mg 5 Days
Age, Continuous57.00 Years
STANDARD_DEVIATION 15.73
56.00 Years
STANDARD_DEVIATION 15.89
56.10 Years
STANDARD_DEVIATION 15.18
54.90 Years
STANDARD_DEVIATION 16.9
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants13 Participants8 Participants2 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
71 Participants209 Participants68 Participants70 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants2 Participants1 Participants1 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
2 Participants6 Participants2 Participants2 Participants
Race (NIH/OMB)
Black or African American
15 Participants48 Participants15 Participants18 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants2 Participants1 Participants1 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
57 Participants168 Participants59 Participants52 Participants
Region of Enrollment
Bulgaria
14 Participants41 Participants11 Participants16 Participants
Region of Enrollment
Georgia
8 Participants25 Participants9 Participants8 Participants
Region of Enrollment
Latvia
4 Participants9 Participants4 Participants1 Participants
Region of Enrollment
Romania
7 Participants15 Participants4 Participants4 Participants
Region of Enrollment
Serbia
18 Participants58 Participants21 Participants19 Participants
Region of Enrollment
South Africa
19 Participants60 Participants20 Participants21 Participants
Region of Enrollment
United States
4 Participants16 Participants8 Participants4 Participants
Sex: Female, Male
Female
37 Participants104 Participants35 Participants32 Participants
Sex: Female, Male
Male
37 Participants120 Participants42 Participants41 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 740 / 721 / 76
other
Total, other adverse events
11 / 749 / 726 / 76
serious
Total, serious adverse events
1 / 741 / 722 / 76

Outcome results

Primary

Clinical Response in the ITT Population

The primary efficacy endpoint was clinical response (response, non-response, or indeterminate) at Day 4, tested in the ITT population. Clinical response was determined programmatically using the investigator's assessment of CABP symptoms entered into the eCRF. The severity of the subject CABP symptoms of dyspnea (shortness of breath), cough, production of purulent sputum, and pleuritic chest pain were evaluated on a 4-point scale (absent, mild, moderate, or severe) based upon the CABP Symptom Severity Guidance

Time frame: Day 4 from start of drug administration

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nafithromycin 800 mg 3 DaysClinical Response in the ITT Population68 Participants
Nafithromycin 800 mg 5 DaysClinical Response in the ITT Population65 Participants
Moxifloxacin 400 mgClinical Response in the ITT Population67 Participants
Secondary

Clinical Response in the Micro-ITT Population

Clinical response (response, non-response, or indeterminate) at Day 4 was also tested in the micro-ITT population as a secondary efficacy endpoint. Clinical response was determined programmatically using the investigator's assessment of CABP symptoms entered into the eCRF. The severity of the subject CABP symptoms of dyspnea (shortness of breath), cough, production of purulent sputum, and pleuritic chest pain were evaluated on a 4-point scale (absent, mild, moderate, or severe) based upon the CABP Symptom Severity Guidance

Time frame: Day 4 from start of drug administration

Population: The micro-ITT population included all ITT subjects who had at least one baseline Gram-positive or atypical bacterial pathogen known to cause CABP.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nafithromycin 800 mg 3 DaysClinical Response in the Micro-ITT Population21 Participants
Nafithromycin 800 mg 5 DaysClinical Response in the Micro-ITT Population26 Participants
Moxifloxacin 400 mgClinical Response in the Micro-ITT Population18 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026