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Trial to Evaluate Beta-Lactam Antimicrobial Therapy of Community Acquired Pneumonia in Children

A Phase IV Double-Blind, Placebo-Controlled, Randomized Trial to Evaluate Short Course vs.Standard Course Outpatient Therapy of Community Acquired Pneumonia in Children (SCOUT-CAP)

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02891915
Enrollment
385
Registered
2016-09-08
Start date
2016-12-02
Completion date
2019-12-16
Last updated
2021-02-03

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

Conditions

Pneumonia

Keywords

Antimicrobial, Beta-Lactam, Pneumonia, Short Course, Standard Course, Therapy

Brief summary

This is a multi-center, randomized, double-blind, placebo-controlled, superiority clinical trial will test the effectiveness of short (5-day) vs.standard (10-day) course therapy in children who are diagnosed with CAP and initially treated in outpatient clinics, urgent care facilities, and emergency departments. Primary objective is to compare the composite overall outcome (Desirability of Outcome Ranking, DOOR) among children 6-71 months of age with CAP assigned to a strategy of short course (5 days) vs standard course (10 days) outpatient beta-lactam therapy at Outcome Assessment Visit #1 (Study Day 8 +/- 2 days)

Detailed description

This is a multi-center, randomized, double-blind, placebo-controlled, superiority clinical trial evaluating short course (5 day) vs. standard course (10 day) of oral beta-lactam antibiotic therapy (amoxicillin, amoxicillin-clavulanate, cefdinir) for treatment of CAP in children 6-71 months of age who have clinically improved prior to enrollment. The study will randomize approximately 400 enrolled subjects to one of the two study arms (approximately 200 children in each arm) in order to reach 360 subjects completing Outcome Assessment Visit 1. Subjects will be randomized (1:1) to receive either a standard course of the initially prescribed antibiotic (10 days) or a short course of the initially prescribed antibiotic (5 days) plus 5 days of matching placebo. The study will recruit potential subjects from children who are diagnosed with CAP and who are initiated on oral beta-lactam therapy by healthcare providers in EDs, outpatient clinics, and urgent care centers at the study sites. Day -5 is defined as the date on which oral beta-lactam therapy is initiated for a diagnosis of CAP. Potential subjects will be identified at any time following clinical diagnosis of pneumonia. These subjects will be assessed for eligibility and enrolled on Day -3 to -1 of their initially prescribed oral beta-lactam therapy. Subjects may also be enrolled on Day 1 (the first day of receipt of study agent) provided they have not yet received any doses of the healthcare provider-prescribed antibiotic therapy for that day. The Primary objective is to compare the composite overall outcome (Desirability of Outcome Ranking, DOOR) among children 6-71 months of age with CAP assigned to a strategy of short course (5 days) vs standard course (10 days) outpatient beta-lactam therapy at Outcome Assessment Visit #1 (Study Day 8 +/- 2 days). The Secondary objectives are: 1) To compare the composite overall outcome (DOOR) among children 6-71 months of age with CAP assigned to a strategy of short course (5 days) vs standard course (10 days) outpatient beta-lactam therapy at Outcome Assessment Visit #2 (Study Day 22 +/- 3 days); 2) To compare the resolution of symptoms (a component of DOOR) among children 6-71 months of age with CAP assigned to a strategy of short course (5 days) vs standard course (10 days) outpatient beta-lactam therapy at Outcome Assessment Visits #1 and #2; 3) To compare the clinical response (a component of DOOR) among children 6-71 months of age with CAP assigned to a strategy of short course (5 days) vs standard course (10 days) outpatient beta-lactam therapy at Outcome Assessment Visits #1 and #2; 4) To compare solicited events (a component of DOOR) among children 6-71 months of age with CAP assigned to a strategy of short course (5 days) vs standard course (10 days) outpatient beta-lactam therapy at Outcome Assessment Visits #1 and #2; 5) To compare medically attended visits to Emergency Departments (ED) or outpatient clinics, hospitalizations, surgical procedures, and receipt of non-study systemic antibiotics (components of the clinical response) among children 6-71 months of age with CAP assigned to a strategy of short course (5 days) vs standard course (10 days) outpatient beta-lactam therapy at Outcome Assessment Visits #1 and #2

Interventions

DRUGAmoxicillin

Amoxicillin is an aminopenicillin antibiotic

A fixed-ratio combination of amoxicillin trihydrate, an aminopenicillin, and potassium clavulanate, a beta-lactamase inhibitor, used to treat a broad-spectrum of bacterial infections, especially resistant strains.

Cefdinir is a cephalosporin antibiotic used to treat bacterial infections in many different parts of the body.

OTHERPlacebo

Placebo

Sponsors

National Institute of Allergy and Infectious Diseases (NIAID)
Lead SponsorNIH

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
6 Months to 71 Months
Healthy volunteers
No

Inclusion criteria

1. Age 6 - 71 months 2. Provider diagnosis of CAP and prescription of antibiotic therapy with amoxicillin, amoxicillin-clavulanate, or cefdinir \- amoxicillin or amoxicillin-clavulanate prescribed at a amoxicillin dose of 60 mg/kg/day \-- cefdinir prescribed at a minimum dose of 10 mg/kg/day 3. Parental report of clinical improvement \- based on lack of either subjective or known fever temperature \>/= 38.3°C in the preceding 24 hours; current respiratory rate no greater than 50 breaths/minute (\<2 years of age) or breaths/minute (= / \> 2 years of age); and current grade of cough \< 3 4. Ability of a parent or guardian to understand and comply with the study procedures and be available for all study visits 5. Signed written informed consent by a parent or guardian

Exclusion criteria

1\. Treatment with any systemic antibiotic therapy within 7 days before the diagnosis of CAP 2. Initial therapy for CAP with combination antibiotic therapy * amoxicillin, amoxicillin/clavulanate or cefdinir plus one or more additional oral, intravenous, or intramuscular antibiotics 3. History of anaphylaxis or severe drug allergy to amoxicillin, if prescribed amoxicillin or amoxicillin/clavulanic acid; or oral cephalosporin antibiotics (except cefaclor), if prescribed cefdinir 4. Presence of concomitant bacterial infection that requires \> 5 days of antibiotic therapy 5. Radiographic findings (where applicable) of complicated pneumonia at presentation or any subsequent chest radiograph up to the time of enrollment * clinically significant pleural effusion, lung abscess, or pneumatocele 6. Hospitalization for pneumonia during Day -5 to -1 of antibiotic therapy for CAP * subjects who require serial clinical assessments, but are discharged within 24 hours will not be considered hospitalized and will not satisfy this exclusion criterion 7. Pneumonia due to S. aureus or group A streptococcus documented by positive blood culture or PCR, at the time of enrollment 8. History of pneumonia within the previous 6 months 9. History of persistent asthma within the previous 6 months or current acute asthma exacerbation * persistent asthma is defined as receiving daily asthma maintenance therapy such as inhaled corticosteroids, cromolyn, theophylline, or leukotriene receptor antagonists \-- acute asthma exacerbation is defined as receiving concomitant bronchodilator therapy and systemic corticosteroids 10. Provider-diagnosis of aspiration pneumonia, bronchiolitis, or bronchitis 11. Surgery or other invasive procedures of the upper or lower airway (e.g., bronchoscopy, laryngoscopy) with general anesthesia or hospitalization \</=7 days before diagnosis of CAP 12. History of an underlying chronic medical condition * including chronic heart disease, chronic lung disease (except asthma), congenital anomalies of the airways or lung, cystic fibrosis, chronic renal disease including nephrotic syndrome, protein-losing enteropathy of any cause, severe malnutrition, neurocognitive disorders, metabolic disorders (including phenylketonuria), or genetic disorders (note: genetic syndromes such as Down syndrome and Edwards Syndrome are excluded; however, children with genetic disorders (e.g., hemophilia) but who do not have a genetic syndrome may not satisfy this particular exclusion criterion; it is important that children with such genetic disorders do not have symptoms and/or comorbidities that would pose additional risk to them nor jeopardize the adequacy of study assessments.) 13. History of a condition that compromises the immune system * HIV infection, primary immunodeficiency, anatomic or functional asplenia; receipt of a hematopoietic stem cell or solid organ transplant at any time; receipt of immunosuppressive therapy including chemotherapeutic agents, biologic agents, antimetabolites or radiation therapy during the past 12 months; or daily use of systemic corticosteroids for more than 7 consecutive days during the past 14 days 14. Any other condition that in the judgment of the investigator precludes participation because it could affect the safety of the subject 15. Current enrollment in another clinical trial of an investigational agent 16. Previous enrollment in this trial

Design outcomes

Primary

MeasureTime frameDescription
Desirability of Outcome Ranking (DOOR)Outcome Assessment Visit 1 (Study Day 8 +/- 2 days)DOOR is a composite endpoint created using clinical outcomes from the first 5 days and at Outcome Assessment Visit #1 (OAV #1). It is based on adequate clinical response at OAV #1, solicited symptoms from first 5 days and number of days of antibiotics use for worsening pneumonia from the first 5 days of the study.

Secondary

MeasureTime frameDescription
Resolution of Symptoms (a Component of DOOR)Outcome Assessment Visit 1 (Study Day 8 +/- 2 days)This table provides number and percentage of subjects who experienced lack of resolution of symptoms by their OAV #1.
Adequate Clinical Response Rates (a Component of DOOR)Outcome Assessment Visit 1 (Study Day 8 +/- 2 days)Lack of adequate clinical response at OAV #1 is defined as the presence of a medically attended visit to an Emergency Department (ED) or outpatient clinic or hospitalization or receipt of non-study antibiotics or surgical procedures for persistent or worsening pneumonia from Day 1 to Day 5.
Desirability of Outcome Ranking (DOOR)Outcome Assessment Visit 2 (Study Day 22 +/- 3 days)DOOR is a composite endpoint created using clinical outcomes from the first 18 days and at Outcome Assessment Visit #2 (OAV #2). It is based on adequate clinical response at OAV #2, solicited symptoms from first 18 days and number of days of antibiotics use for worsening pneumonia from the first 18 days of the study.
Number of Participants Receiving Non-study Systemic Antibiotics for Persistent or Worsening Pneumonia During Medically Attended VisitsOutcome Assessment Visit 1 (Study Day 8 +/- 2 days)This table provides number and percentage of subjects who received non-study antibiotics for any use from Day 1 to Day 5
Number of Participants Receiving Non-study Systemic Antibiotics for All Causes During Medically Attended VisitsOutcome Assessment Visit 1 (Study Day 8 +/- 2 days)This table provides number and percentage of subjects who received non-study antibiotics for any reason from Day 1 to Day 5
Number of Participants Reporting Solicited SymptomsOutcome Assessment Visit 1 (Study Day 8 +/- 2 days)This table summarizes the number and percentage of subjects experiencing any solicited events of mild, moderate or severe severity from Day 1 to Day 5

Countries

United States

Participant flow

Recruitment details

Children, males and females, aged 6-71 months who are diagnosed with Community Acquired Pneumonia (CAP) and initially treated in outpatient clinics, urgent care facilities, and emergency departments were enrolled. Participants were enrolled between 02DEC2016 and 22NOV2019.

Participants by arm

ArmCount
Short Course
Participants will receive a short course of the initially prescribed antibiotic for 5 days plus 5 days of matching placebo Amoxicillin: Amoxicillin is an aminopenicillin antibiotic Amoxicillin-clavulanate: A fixed-ratio combination of amoxicillin trihydrate, an aminopenicillin, and potassium clavulanate, a beta-lactamase inhibitor, used to treat a broad-spectrum of bacterial infections, especially resistant strains. Cefdinir: Cefdinir is a cephalosporin antibiotic used to treat bacterial infections in many different parts of the body. Placebo: Placebo
192
Standard Course
Participants will receive a standard course of the initially prescribed antibiotic( Amoxicillin, Amoxicillin-Clavulanate, Cefdinir) for 10 days Amoxicillin: Amoxicillin is an aminopenicillin antibiotic Amoxicillin-clavulanate: A fixed-ratio combination of amoxicillin trihydrate, an aminopenicillin, and potassium clavulanate, a beta-lactamase inhibitor, used to treat a broad-spectrum of bacterial infections, especially resistant strains. Cefdinir: Cefdinir is a cephalosporin antibiotic used to treat bacterial infections in many different parts of the body.
193
Total385

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyBecame Ineligible After Enrollment21
Overall StudyEnrolled but Treatment Not Administered64
Overall StudyLost to Follow-up14
Overall StudyPhysician Decision10
Overall StudyWithdrawal by Subject33

Baseline characteristics

CharacteristicShort CourseStandard CourseTotal
Age, Continuous34.6 months
STANDARD_DEVIATION 16.6
36.8 months
STANDARD_DEVIATION 17.8
35.7 months
STANDARD_DEVIATION 17.2
Age, Customized
24-71 Months
137 Participants137 Participants274 Participants
Age, Customized
< 24 Months
55 Participants56 Participants111 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
15 Participants18 Participants33 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
176 Participants173 Participants349 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
1 Participants2 Participants3 Participants
Initial Antibiotic
Amoxicillin
176 Participants174 Participants350 Participants
Initial Antibiotic
Amoxicillin Clavulanate
10 Participants10 Participants20 Participants
Initial Antibiotic
Cefdinir
6 Participants9 Participants15 Participants
Initial Site of Treatment
ED
41 Participants40 Participants81 Participants
Initial Site of Treatment
Out-Patient/Urgent Care
151 Participants153 Participants304 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
4 Participants4 Participants8 Participants
Race (NIH/OMB)
Black or African American
48 Participants51 Participants99 Participants
Race (NIH/OMB)
More than one race
15 Participants17 Participants32 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
4 Participants3 Participants7 Participants
Race (NIH/OMB)
White
121 Participants118 Participants239 Participants
Region of Enrollment
United States
Arkansas Children's Hospital
8 Participants5 Participants13 Participants
Region of Enrollment
United States
Children's Hospital of Philadelphia
59 Participants63 Participants122 Participants
Region of Enrollment
United States
Children's Hospital of Pittsburgh
67 Participants62 Participants129 Participants
Region of Enrollment
United States
Cincinnati Children's Hospital
2 Participants2 Participants4 Participants
Region of Enrollment
United States
Duke University
23 Participants20 Participants43 Participants
Region of Enrollment
United States
University of Alabama at Birmingham-Pediatrics
1 Participants6 Participants7 Participants
Region of Enrollment
United States
Vanderbilt University Medical Center
16 Participants16 Participants32 Participants
Region of Enrollment
United States
Washington University
16 Participants19 Participants35 Participants
Region of Enrollment
United States
192 participants193 participants385 participants
Sex: Female, Male
Female
97 Participants93 Participants190 Participants
Sex: Female, Male
Male
95 Participants100 Participants195 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 1920 / 193
other
Total, other adverse events
98 / 19298 / 193
serious
Total, serious adverse events
0 / 1920 / 193

Outcome results

Primary

Desirability of Outcome Ranking (DOOR)

DOOR is a composite endpoint created using clinical outcomes from the first 5 days and at Outcome Assessment Visit #1 (OAV #1). It is based on adequate clinical response at OAV #1, solicited symptoms from first 5 days and number of days of antibiotics use for worsening pneumonia from the first 5 days of the study.

Time frame: Outcome Assessment Visit 1 (Study Day 8 +/- 2 days)

Population: Intent to Treat (ITT) Population: All randomized subjects that were still eligible on Day 1 of the study. Analysis of DOOR will use all subjects in the ITT population. Subjects with missing values of DOOR will have their values imputed. However, summaries of observed ordinal clinical response values presented below are based on complete data without imputation.

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Short CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with resolution of symptoms and no adverse events97 Participants
Short CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with resolution of symptoms and with mild adverse events47 Participants
Short CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with resolution of symptoms and with moderate adverse events14 Participants
Short CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with resolution of symptoms and with severe adverse events0 Participants
Short CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with persistent symptoms of fever, tachypnea, or cough10 Participants
Short CourseDesirability of Outcome Ranking (DOOR)Lack of adequate clinical response with ED/clinic visit but no hospitalization2 Participants
Short CourseDesirability of Outcome Ranking (DOOR)Lack of adequate clinical response with hospitalization0 Participants
Short CourseDesirability of Outcome Ranking (DOOR)Death from any cause0 Participants
Standard CourseDesirability of Outcome Ranking (DOOR)Death from any cause0 Participants
Standard CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with resolution of symptoms and no adverse events107 Participants
Standard CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with persistent symptoms of fever, tachypnea, or cough12 Participants
Standard CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with resolution of symptoms and with mild adverse events42 Participants
Standard CourseDesirability of Outcome Ranking (DOOR)Lack of adequate clinical response with hospitalization0 Participants
Standard CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with resolution of symptoms and with moderate adverse events10 Participants
Standard CourseDesirability of Outcome Ranking (DOOR)Lack of adequate clinical response with ED/clinic visit but no hospitalization1 Participants
Standard CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with resolution of symptoms and with severe adverse events2 Participants
Comparison: Null: the sum of the probability that a subject assigned to the 5-day arm will have a higher DOOR (higher DOOR is a lower value and is superior) than if assigned to the 10-day arm plus one-half the probability of equal DOORs is 50% (i.e., no difference in DOOR).p-value: <0.00195% CI: [0.63, 0.75]Wilcoxon (Mann-Whitney)
Secondary

Adequate Clinical Response Rates (a Component of DOOR)

Lack of adequate clinical response at OAV #2 is defined as the presence of a medically attended visit to an ED or outpatient clinic or hospitalization or receipt of non-study antibiotics or surgical procedures for persistent or worsening pneumonia from Day 1 to Day 18.

Time frame: Outcome Assessment Visit 2 (Study Day 22 +/- 3 days)

Population: Complete Case at OAV #2. This population is made of subjects who were treated with at least one dose of study product, did not terminate early from the study before OAV #2, and completed OAV #2 with non-missing data for all DOOR components at OAV #2.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Short CourseAdequate Clinical Response Rates (a Component of DOOR)ED or Clinic Visit4 Participants
Short CourseAdequate Clinical Response Rates (a Component of DOOR)Hospitalization0 Participants
Short CourseAdequate Clinical Response Rates (a Component of DOOR)Receipt of Non-Study Antibiotic2 Participants
Short CourseAdequate Clinical Response Rates (a Component of DOOR)Surgical Procedure0 Participants
Short CourseAdequate Clinical Response Rates (a Component of DOOR)Lack of Adequate Clinical Response2 Participants
Standard CourseAdequate Clinical Response Rates (a Component of DOOR)Surgical Procedure0 Participants
Standard CourseAdequate Clinical Response Rates (a Component of DOOR)Lack of Adequate Clinical Response3 Participants
Standard CourseAdequate Clinical Response Rates (a Component of DOOR)ED or Clinic Visit2 Participants
Standard CourseAdequate Clinical Response Rates (a Component of DOOR)Receipt of Non-Study Antibiotic3 Participants
Standard CourseAdequate Clinical Response Rates (a Component of DOOR)Hospitalization0 Participants
Secondary

Adequate Clinical Response Rates (a Component of DOOR)

Lack of adequate clinical response at OAV #1 is defined as the presence of a medically attended visit to an Emergency Department (ED) or outpatient clinic or hospitalization or receipt of non-study antibiotics or surgical procedures for persistent or worsening pneumonia from Day 1 to Day 5.

Time frame: Outcome Assessment Visit 1 (Study Day 8 +/- 2 days)

Population: Complete Case at OAV #1. This population is made of subjects who were treated with at least one dose of study product, did not terminate early from the study before OAV #1, and completed OAV #1 with non-missing data for all DOOR components at OAV #1.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Short CourseAdequate Clinical Response Rates (a Component of DOOR)ED or Clinic Visit2 Participants
Short CourseAdequate Clinical Response Rates (a Component of DOOR)Hospitalization0 Participants
Short CourseAdequate Clinical Response Rates (a Component of DOOR)Receipt of Non-Study Antibiotic2 Participants
Short CourseAdequate Clinical Response Rates (a Component of DOOR)Surgical Procedure0 Participants
Short CourseAdequate Clinical Response Rates (a Component of DOOR)Lack of Adequate Clinical Response2 Participants
Standard CourseAdequate Clinical Response Rates (a Component of DOOR)Surgical Procedure0 Participants
Standard CourseAdequate Clinical Response Rates (a Component of DOOR)Lack of Adequate Clinical Response1 Participants
Standard CourseAdequate Clinical Response Rates (a Component of DOOR)ED or Clinic Visit1 Participants
Standard CourseAdequate Clinical Response Rates (a Component of DOOR)Receipt of Non-Study Antibiotic1 Participants
Standard CourseAdequate Clinical Response Rates (a Component of DOOR)Hospitalization0 Participants
Secondary

Desirability of Outcome Ranking (DOOR)

DOOR is a composite endpoint created using clinical outcomes from the first 18 days and at Outcome Assessment Visit #2 (OAV #2). It is based on adequate clinical response at OAV #2, solicited symptoms from first 18 days and number of days of antibiotics use for worsening pneumonia from the first 18 days of the study.

Time frame: Outcome Assessment Visit 2 (Study Day 22 +/- 3 days)

Population: ITT Population: All randomized subjects that were still eligible on Day 1 of the study. Analysis of DOOR will use all subjects in the ITT population. Subjects with missing values of DOOR will have their values imputed. However, summaries of observed ordinal clinical response values presented below are based on complete data without imputation.

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Short CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with resolution of symptoms and no solicited events73 Participants
Short CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with resolution of symptoms and with mild solicited events53 Participants
Short CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with resolution of symptoms and with moderate solicited events25 Participants
Short CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with resolution of symptoms and with severe solicited events3 Participants
Short CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with persistent symptoms of fever, tachypnea, or cough7 Participants
Short CourseDesirability of Outcome Ranking (DOOR)Lack of adequate clinical response with ED/clinic visit but no hospitalization2 Participants
Short CourseDesirability of Outcome Ranking (DOOR)Lack of adequate clinical response with hospitalization0 Participants
Short CourseDesirability of Outcome Ranking (DOOR)Death from any cause0 Participants
Standard CourseDesirability of Outcome Ranking (DOOR)Death from any cause0 Participants
Standard CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with resolution of symptoms and no solicited events81 Participants
Standard CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with persistent symptoms of fever, tachypnea, or cough8 Participants
Standard CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with resolution of symptoms and with mild solicited events51 Participants
Standard CourseDesirability of Outcome Ranking (DOOR)Lack of adequate clinical response with hospitalization0 Participants
Standard CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with resolution of symptoms and with moderate solicited events20 Participants
Standard CourseDesirability of Outcome Ranking (DOOR)Lack of adequate clinical response with ED/clinic visit but no hospitalization3 Participants
Standard CourseDesirability of Outcome Ranking (DOOR)Adequate clinical response with resolution of symptoms and with severe solicited events4 Participants
Comparison: Null: the sum of the probability that a subject assigned to the 5-day arm will have a higher DOOR (higher DOOR is a lower numerical value and is superior) than if assigned to the 10-day arm plus one-half the probability of equal DOORs is 50% (i.e., no difference in DOOR).p-value: <0.00195% CI: [0.57, 0.69]Wilcoxon (Mann-Whitney)
Secondary

Number of Participants Receiving Non-study Systemic Antibiotics for All Causes During Medically Attended Visits

This table provides number and percentage of subjects who received non-study antibiotics for any reason from Day 1 to Day 18

Time frame: Outcome Assessment Visit 2 (Study Day 22 +/- 3 days)

Population: Complete Case at OAV #2. This population is made of subjects who were treated with at least one dose of study product, did not terminate early from the study before OAV #2, and completed OAV #2 with non-missing data for all DOOR components at OAV #2.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Short CourseNumber of Participants Receiving Non-study Systemic Antibiotics for All Causes During Medically Attended VisitsED or Clinic Visit29 Participants
Short CourseNumber of Participants Receiving Non-study Systemic Antibiotics for All Causes During Medically Attended VisitsReceipt of Non-Study Antibiotic18 Participants
Standard CourseNumber of Participants Receiving Non-study Systemic Antibiotics for All Causes During Medically Attended VisitsED or Clinic Visit32 Participants
Standard CourseNumber of Participants Receiving Non-study Systemic Antibiotics for All Causes During Medically Attended VisitsReceipt of Non-Study Antibiotic11 Participants
Secondary

Number of Participants Receiving Non-study Systemic Antibiotics for All Causes During Medically Attended Visits

This table provides number and percentage of subjects who received non-study antibiotics for any reason from Day 1 to Day 5

Time frame: Outcome Assessment Visit 1 (Study Day 8 +/- 2 days)

Population: Complete Case at OAV #1. This population is made of subjects who were treated with at least one dose of study product, did not terminate early from the study before OAV #1, and completed OAV #1 with non-missing data for all DOOR components at OAV #1.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Short CourseNumber of Participants Receiving Non-study Systemic Antibiotics for All Causes During Medically Attended VisitsED or Clinic Visit8 Participants
Short CourseNumber of Participants Receiving Non-study Systemic Antibiotics for All Causes During Medically Attended VisitsReceipt of Non-Study Antibiotic7 Participants
Standard CourseNumber of Participants Receiving Non-study Systemic Antibiotics for All Causes During Medically Attended VisitsED or Clinic Visit7 Participants
Standard CourseNumber of Participants Receiving Non-study Systemic Antibiotics for All Causes During Medically Attended VisitsReceipt of Non-Study Antibiotic2 Participants
Secondary

Number of Participants Receiving Non-study Systemic Antibiotics for Persistent or Worsening Pneumonia During Medically Attended Visits

This table provides number and percentage of subjects who received non-study antibiotics for any use from Day 1 to Day 5

Time frame: Outcome Assessment Visit 1 (Study Day 8 +/- 2 days)

Population: Complete Case at OAV #1. This population is made of subjects who were treated with at least one dose of study product, did not terminate early from the study before OAV #1, and completed OAV #1 with non-missing data for all DOOR components at OAV #1.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Short CourseNumber of Participants Receiving Non-study Systemic Antibiotics for Persistent or Worsening Pneumonia During Medically Attended VisitsED or Clinic Visit2 Participants
Short CourseNumber of Participants Receiving Non-study Systemic Antibiotics for Persistent or Worsening Pneumonia During Medically Attended VisitsReceipt of Non-Study Antibiotic2 Participants
Standard CourseNumber of Participants Receiving Non-study Systemic Antibiotics for Persistent or Worsening Pneumonia During Medically Attended VisitsED or Clinic Visit1 Participants
Standard CourseNumber of Participants Receiving Non-study Systemic Antibiotics for Persistent or Worsening Pneumonia During Medically Attended VisitsReceipt of Non-Study Antibiotic1 Participants
Secondary

Number of Participants Receiving Non-study Systemic Antibiotics for Persistent or Worsening Pneumonia During Medically Attended Visits

This table provides number and percentage of subjects who received non-study antibiotics for any use from Day 1 to Day 18

Time frame: Outcome Assessment Visit 2 (Study Day 22 +/- 3 days)

Population: Complete Case at OAV #2. This population is made of subjects who were treated with at least one dose of study product, did not terminate early from the study before OAV #2, and completed OAV #2 with non-missing data for all DOOR components at OAV #2.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Short CourseNumber of Participants Receiving Non-study Systemic Antibiotics for Persistent or Worsening Pneumonia During Medically Attended VisitsED or Clinic Visit4 Participants
Short CourseNumber of Participants Receiving Non-study Systemic Antibiotics for Persistent or Worsening Pneumonia During Medically Attended VisitsReceipt of Non-Study Antibiotic2 Participants
Standard CourseNumber of Participants Receiving Non-study Systemic Antibiotics for Persistent or Worsening Pneumonia During Medically Attended VisitsED or Clinic Visit2 Participants
Standard CourseNumber of Participants Receiving Non-study Systemic Antibiotics for Persistent or Worsening Pneumonia During Medically Attended VisitsReceipt of Non-Study Antibiotic3 Participants
Secondary

Number of Participants Reporting Solicited Symptoms

This table summarizes the number and percentage of subjects experiencing any solicited events of mild, moderate or severe severity from Day 1 to Day 18

Time frame: Outcome Assessment Visit 2 (Study Day 22 +/- 3 days)

Population: Complete Case at OAV #2. This population is made of subjects who were treated with at least one dose of study product, did not terminate early from the study before OAV #2, and completed OAV #2 with non-missing data for all DOOR components at OAV #2.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Short CourseNumber of Participants Reporting Solicited SymptomsVomiting19 Participants
Short CourseNumber of Participants Reporting Solicited SymptomsAllergic Reaction22 Participants
Short CourseNumber of Participants Reporting Solicited SymptomsIrritability67 Participants
Short CourseNumber of Participants Reporting Solicited SymptomsStomatitis1 Participants
Short CourseNumber of Participants Reporting Solicited SymptomsDiarrhea33 Participants
Short CourseNumber of Participants Reporting Solicited SymptomsCandidiasis7 Participants
Short CourseNumber of Participants Reporting Solicited SymptomsAny Event91 Participants
Standard CourseNumber of Participants Reporting Solicited SymptomsCandidiasis7 Participants
Standard CourseNumber of Participants Reporting Solicited SymptomsAny Event89 Participants
Standard CourseNumber of Participants Reporting Solicited SymptomsIrritability60 Participants
Standard CourseNumber of Participants Reporting Solicited SymptomsVomiting24 Participants
Standard CourseNumber of Participants Reporting Solicited SymptomsDiarrhea30 Participants
Standard CourseNumber of Participants Reporting Solicited SymptomsAllergic Reaction21 Participants
Standard CourseNumber of Participants Reporting Solicited SymptomsStomatitis6 Participants
Secondary

Number of Participants Reporting Solicited Symptoms

This table summarizes the number and percentage of subjects experiencing any solicited events of mild, moderate or severe severity from Day 1 to Day 5

Time frame: Outcome Assessment Visit 1 (Study Day 8 +/- 2 days)

Population: Complete Case at OAV #1. This population is made of subjects who were treated with at least one dose of study product, did not terminate early from the study before OAV #1, and completed OAV #1 with non-missing data for all DOOR components at OAV #1.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Short CourseNumber of Participants Reporting Solicited SymptomsVomiting11 Participants
Short CourseNumber of Participants Reporting Solicited SymptomsAllergic Reaction15 Participants
Short CourseNumber of Participants Reporting Solicited SymptomsIrritability52 Participants
Short CourseNumber of Participants Reporting Solicited SymptomsStomatitis1 Participants
Short CourseNumber of Participants Reporting Solicited SymptomsDiarrhea23 Participants
Short CourseNumber of Participants Reporting Solicited SymptomsCandidiasis4 Participants
Short CourseNumber of Participants Reporting Solicited SymptomsAny Event74 Participants
Standard CourseNumber of Participants Reporting Solicited SymptomsCandidiasis4 Participants
Standard CourseNumber of Participants Reporting Solicited SymptomsAny Event68 Participants
Standard CourseNumber of Participants Reporting Solicited SymptomsIrritability43 Participants
Standard CourseNumber of Participants Reporting Solicited SymptomsVomiting11 Participants
Standard CourseNumber of Participants Reporting Solicited SymptomsDiarrhea21 Participants
Standard CourseNumber of Participants Reporting Solicited SymptomsAllergic Reaction15 Participants
Standard CourseNumber of Participants Reporting Solicited SymptomsStomatitis3 Participants
Secondary

Resolution of Symptoms (a Component of DOOR)

This table provides number and percentage of subjects who experienced lack of resolution of symptoms by their OAV #1.

Time frame: Outcome Assessment Visit 1 (Study Day 8 +/- 2 days)

Population: Complete Case at OAV #1. This population is made of subjects who were treated with at least one dose of study product, did not terminate early from the study before OAV #1, and completed OAV #1 with non-missing data for all DOOR components at OAV #1.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Short CourseResolution of Symptoms (a Component of DOOR)Fever2 Participants
Short CourseResolution of Symptoms (a Component of DOOR)Cough7 Participants
Short CourseResolution of Symptoms (a Component of DOOR)Elevated respiratory rate2 Participants
Short CourseResolution of Symptoms (a Component of DOOR)Lack of Resolution of Symptoms12 Participants
Standard CourseResolution of Symptoms (a Component of DOOR)Lack of Resolution of Symptoms13 Participants
Standard CourseResolution of Symptoms (a Component of DOOR)Fever1 Participants
Standard CourseResolution of Symptoms (a Component of DOOR)Elevated respiratory rate7 Participants
Standard CourseResolution of Symptoms (a Component of DOOR)Cough4 Participants
Secondary

Resolution of Symptoms (a Component of DOOR)

This table provides number and percentage of subjects who experienced lack of resolution of symptoms by their OAV #2.

Time frame: Outcome Assessment Visit 2 (Study Day 22 +/- 3 days)

Population: Complete Case at OAV #2. This population is made of subjects who were treated with at least one dose of study product, did not terminate early from the study before OAV #2, and completed OAV #2 with non-missing data for all DOOR components at OAV #2.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Short CourseResolution of Symptoms (a Component of DOOR)Lack of Resolution of Symptoms9 Participants
Short CourseResolution of Symptoms (a Component of DOOR)Fever0 Participants
Short CourseResolution of Symptoms (a Component of DOOR)Elevated respiratory rate2 Participants
Short CourseResolution of Symptoms (a Component of DOOR)Cough6 Participants
Standard CourseResolution of Symptoms (a Component of DOOR)Cough5 Participants
Standard CourseResolution of Symptoms (a Component of DOOR)Lack of Resolution of Symptoms11 Participants
Standard CourseResolution of Symptoms (a Component of DOOR)Elevated respiratory rate1 Participants
Standard CourseResolution of Symptoms (a Component of DOOR)Fever3 Participants

Source: ClinicalTrials.gov · Data processed: Mar 3, 2026