Trial Outcomes & Findings for Study to Assess Efficacy and Safety of PF-06947386 in Japanese Adult Patients With Complicated Intra-abdominal Infection (NCT NCT04927312)

A total of 60 Japanese hospitalized participants with complicated intra-abdominal infection (cIAI) were enrolled in this study.

Study to Assess Efficacy and Safety of PF-06947386 in Japanese Adult Patients With Complicated Intra-abdominal Infection

Clinical response: Clinical response of cure was defined as complete resolution or significant improvement of signs and symptoms of the index infection such that no further antimicrobial therapy, drainage, or surgical intervention was necessary. TOC was after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion; clinical failure: Death related to intra-abdominal infection, Persisting or recurrent infection within the abdomen, Postsurgical wound infections, participant who received treatment with additional antibiotics for ongoing symptoms of intra-abdominal infection; Indeterminate: Study data was not available for evaluation of efficacy for any reason. TOC was after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Clinical response: Clinical response of cure was defined as complete resolution or significant improvement of signs and symptoms of the index infection such that no further antimicrobial therapy, drainage, or surgical intervention was necessary. TOC was after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion; clinical failure: Death related to intra-abdominal infection, Persisting or recurrent infection within the abdomen, Postsurgical wound infections, participant who received treatment with additional antibiotics for ongoing symptoms of intra-abdominal infection; Indeterminate: Study data was not available for evaluation of efficacy for any reason. EOT: within 24 hours after completion of last IV infusion. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion.

Clinical response: Clinical response of cure was defined as complete resolution or significant improvement of signs and symptoms of the index infection such that no further antimicrobial therapy, drainage, or surgical intervention was necessary. TOC was after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion; clinical failure: Death related to intra-abdominal infection, Persisting or recurrent infection within the abdomen, Postsurgical wound infections, participant who received treatment with additional antibiotics for ongoing symptoms of intra-abdominal infection; Indeterminate: Study data was not available for evaluation of efficacy for any reason. EOT: within 24 hours after completion of last IV infusion. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion.

Clinical response: Clinical response of cure was defined as complete resolution or significant improvement of signs and symptoms of the index infection such that no further antimicrobial therapy, drainage, or surgical intervention was necessary. TOC was after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion; clinical failure: Death related to intra-abdominal infection, Persisting or recurrent infection within the abdomen, Postsurgical wound infections, participant who received treatment with additional antibiotics for ongoing symptoms of intra-abdominal infection; Indeterminate: Study data was not available for evaluation of efficacy for any reason. EOT: within 24 hours after completion of last IV infusion. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion.

Clinical response: Clinical response of cure was defined as complete resolution or significant improvement of signs and symptoms of the index infection such that no further antimicrobial therapy, drainage, or surgical intervention was necessary. TOC was after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion; clinical failure: Death related to intra-abdominal infection, Persisting or recurrent infection within the abdomen, Postsurgical wound infections, participant who received treatment with additional antibiotics for ongoing symptoms of intra-abdominal infection; Indeterminate: Study data was not available for evaluation of efficacy for any reason. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion.

Clinical response: Clinical response of cure was defined as complete resolution or significant improvement of signs and symptoms of the index infection such that no further antimicrobial therapy, drainage, or surgical intervention was necessary. TOC was after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion; clinical failure: Death related to intra-abdominal infection, Persisting or recurrent infection within the abdomen, Postsurgical wound infections, participant who received treatment with additional antibiotics for ongoing symptoms of intra-abdominal infection; Indeterminate: Study data was not available for evaluation of efficacy for any reason. EOT: within 24 hours after completion of last IV infusion. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion.

Microbiological response: Favorable microbiological response assessments include "eradication", "presumed eradication" and "colonization". Unfavorable microbiological response assessments include "persistence", "persistence with increasing MIC", and "presumed persistence. Indeterminate: Study data are not available for evaluation of efficacy. "Indeterminate" were not included in the denominator. EOT: within 24 hours after completion of last IV infusion. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Microbiological response: Favorable microbiological response assessments include "eradication", "presumed eradication" and "colonization". Unfavorable microbiological response assessments include "persistence", "persistence with increasing MIC", and "presumed persistence. Indeterminate: Study data was not available for evaluation of efficacy. "Indeterminate" were not included in the denominator. EOT: within 24 hours after completion of last IV infusion. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Microbiological response: Favorable microbiological response assessments include "eradication", "presumed eradication" and "colonization". Unfavorable microbiological response assessments include "persistence", "persistence with increasing MIC", and "presumed persistence. Indeterminate: Study data was not available for evaluation of efficacy. "Indeterminate" were not included in the denominator. EOT: within 24 hours after completion of last IV infusion. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Microbiological response: Favorable microbiological response assessments include "eradication", "presumed eradication" and "colonization". Unfavorable microbiological response assessments include "persistence", "persistence with increasing MIC", and "presumed persistence. Indeterminate: Study data was not available for evaluation of efficacy. "Indeterminate" were not included in the denominator. EOT: within 24 hours after completion of last IV infusion. Response of baseline pathogens cultured from intra-abdominal site or blood. A participant can have more than 1 pathogen. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Microbiological response: Favorable microbiological response assessments include "eradication", "presumed eradication" and "colonization". Unfavorable microbiological response assessments include "persistence", "persistence with increasing MIC", and "presumed persistence. Indeterminate: Study data are not available for evaluation of efficacy. "Indeterminate" were not included in the denominator. EOT: within 24 hours after completion of last IV infusion. Response of baseline pathogens cultured from intra-abdominal site or blood. A participant can have more than 1 pathogen. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Microbiological response: Favorable microbiological response assessments include "eradication", "presumed eradication" and "colonization". Unfavorable microbiological response assessments include "persistence", "persistence with increasing MIC", and "presumed persistence. Indeterminate: Study data was not available for evaluation of efficacy. "Indeterminate" were not included in the denominator. EOT: within 24 hours after completion of last IV infusion. Response of baseline pathogens cultured from intra-abdominal site or blood. A participant can have more than 1 pathogen. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Microbiological response: Favorable microbiological response assessments include "eradication", "presumed eradication" and "colonization". Unfavorable microbiological response assessments include "persistence", "persistence with increasing MIC", and "presumed persistence. Indeterminate: Study data was not available for evaluation of efficacy. "Indeterminate" were not included in the denominator. EOT: within 24 hours after completion of last IV infusion. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Microbiological response: Favorable microbiological response assessments include "eradication", "presumed eradication" and "colonization". Unfavorable microbiological response assessments include "persistence", "persistence with increasing MIC", and "presumed persistence. Indeterminate: Study data was not available for evaluation of efficacy. "Indeterminate" were not included in the denominator. EOT: within 24 hours after completion of last IV infusion. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Microbiological response: Favorable microbiological response assessments include "eradication", "presumed eradication" and "colonization". Unfavorable microbiological response assessments include "persistence", "persistence with increasing MIC", and "presumed persistence. Indeterminate: Study data was not available for evaluation of efficacy. "Indeterminate" were not included in the denominator. EOT: within 24 hours after completion of last IV infusion. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

An AE was any untoward medical occurrence in a participant or clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. SAE was defined as any untoward medical occurrence that, at any dose that resulted in death, was life-threatening, inpatient hospitalization or prolongation of existing hospitalization, persistent disability/incapacity, a congenital anomaly/birth defect as per medical or scientific judgment. AEs included both SAEs and non-SAEs. TEAE was defined as an AE that emerges or worsened during the effective duration of treatment. All events that started on or after the first dosing day were flagged as TEAEs.

Number of participants with death is presented.

Number of participants who discontinued treatment and study due to adverse events is presented.

A semiautomated recording device was used to measure SBP and DBP with participant in a supine position after at least 5 minutes of rest.

Pulse rate was measured for in a supine position preceded by at least 5 minutes of rest for the participant.

Body weight was measured using a balance scale.

Temperature was measured in a supine position, after the participant had rest for at least 5 minutes.

Respiratory rate was measured in a supine position, after the participant had rest for at least 5 minutes.

Criteria for abnormal laboratory values for chemistry parameters: Bilirubin \>1.5\*upper limit of normal (ULN), direct Bilirubin \>1.5\*ULN, aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase \>3.0\*ULN, total protein and albumin \<0.8\*lower limit of normal (LLN), urea nitrogen and creatinine \>1.3\*ULN, sodium \>0.95\*LLN, potassium \>0.9\*LLN and \>1.1\*ULN, calcium \>0.9\*LLN, glucose \> 1.5\*LLN; hematology parameters: Hemoglobin, hematocrit, erythrocytes \<0.8\*LLN, platelets \<0.5\*LLN and \> 1.75\*ULN, leukocytes \<0.6\*LLN and \<0.6\*LLN, lymphocytes \<0.8\* LLN, lymphocytes/leukocytes \<0.8\* LLN and \>1.2\*ULN, neutrophils \>1.2\*ULN, neutrophils/leukocytes \<0.8\*LLN and \>1.2\* ULN, basophils/leukocytes \>1.2\*ULN, eosinophils \>1.2\*ULN, eosinophils/leukocytes \>1.2\*ULN, monocytes and monocytes/leukocytes \>1.2\*ULN; Criteria for abnormal laboratory values for urinalysis parameters: urine glucose, \>=1, urine protein \>=1, urine Hemoglobin\>=1.

Plasma concentrations of avibactam was measured by nominal sampling window.

Plasma concentrations of ceftazidime was measured by nominal sampling window.

Clinical response: Clinical response of cure was defined as complete resolution or significant improvement of signs and symptoms of the index infection such that no further antimicrobial therapy, drainage, or surgical intervention was necessary. TOC was after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion; clinical failure: Death related to intra-abdominal infection, Persisting or recurrent infection within the abdomen, Postsurgical wound infections, participant who received treatment with additional antibiotics for ongoing symptoms of intra-abdominal infection; Indeterminate: Study data was not available for evaluation of efficacy for any reason. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Clinical response: Clinical response of cure was defined as complete resolution or significant improvement of signs and symptoms of the index infection such that no further antimicrobial therapy, drainage, or surgical intervention was necessary. TOC was after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion; clinical failure: Death related to intra-abdominal infection, Persisting or recurrent infection within the abdomen, Postsurgical wound infections, participant who received treatment with additional antibiotics for ongoing symptoms of intra-abdominal infection; Indeterminate: Study data was not available for evaluation of efficacy for any reason. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Clinical response: Clinical response of cure was defined as complete resolution or significant improvement of signs and symptoms of the index infection such that no further antimicrobial therapy, drainage, or surgical intervention was necessary. TOC was after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion; clinical failure: Death related to intra-abdominal infection, Persisting or recurrent infection within the abdomen, Postsurgical wound infections, participant who received treatment with additional antibiotics for ongoing symptoms of intra-abdominal infection; Indeterminate: Study data was not available for evaluation of efficacy for any reason. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Clinical response: Clinical response of cure was defined as complete resolution or significant improvement of signs and symptoms of the index infection such that no further antimicrobial therapy, drainage, or surgical intervention was necessary. TOC was after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion; clinical failure: Death related to intra-abdominal infection, Persisting or recurrent infection within the abdomen, Postsurgical wound infections, participant who received treatment with additional antibiotics for ongoing symptoms of intra-abdominal infection; Indeterminate: Study data was not available for evaluation of efficacy for any reason. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Clinical response of cure was defined as complete resolution or significant improvement of signs \& symptoms of index infection such that no further antimicrobial therapy, drainage, or surgical intervention was necessary. TOC was after 28 calendar days from day of 1st IV infusion, allowed visit window was 28¬-35 calendar days after day of 1st IV infusion; clinical failure: Death related to intra-abdominal infection, Persisting or recurrent infection within abdomen, Postsurgical wound infections, participant who received treatment with additional antibiotics for ongoing symptom of intra-abdominal infection; Indeterminate:Study data was not available for evaluation of efficacy for any reason. EOT: within 24 hours after completion of last IV infusion. LFU:after 42 calendar days from day of 1st IV infusion, allowed visit window was 42-49 calendar days from 1st IV infusion. TOC:after 28 calendar days from 1st IV infusion, allowed visit window was 28-35 calendar days after 1st IV infusion.

Clinical response of cure was defined as complete resolution or significant improvement of signs \& symptoms of index infection such that no further antimicrobial therapy, drainage, or surgical intervention was necessary. TOC was after 28 calendar days from day of 1st IV infusion, allowed visit window was 28¬-35 calendar days after day of 1st IV infusion; clinical failure: Death related to intra-abdominal infection, Persisting or recurrent infection within abdomen, Postsurgical wound infections, participant who received treatment with additional antibiotics for ongoing symptom of intra-abdominal infection; Indeterminate:Study data was not available for evaluation of efficacy for any reason. EOT: within 24 hours after completion of last IV infusion. LFU:after 42 calendar days from day of 1st IV infusion, allowed visit window was 42-49 calendar days from 1st IV infusion. TOC:after 28 calendar days from 1st IV infusion, allowed visit window was 28-35 calendar days after 1st IV infusion.

Microbiological response: Favorable microbiological response assessments include "eradication", "presumed eradication" and "colonization". Unfavorable microbiological response assessments include "persistence", "persistence with increasing MIC", and "presumed persistence. Indeterminate: Study data are not available for evaluation of efficacy. EOT: within 24 hours after completion of last IV infusion. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Microbiological response: Favorable microbiological response assessments include "eradication", "presumed eradication" and "colonization". Unfavorable microbiological response assessments include "persistence", "persistence with increasing MIC", and "presumed persistence. Indeterminate: Study data are not available for evaluation of efficacy. EOT: within 24 hours after completion of last IV infusion. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Microbiological response: Favorable microbiological response assessments include "eradication", "presumed eradication" and "colonization". Unfavorable microbiological response assessments include "persistence", "persistence with increasing MIC", and "presumed persistence. Indeterminate: Study data was not available for evaluation of efficacy. EOT: within 24 hours after completion of last IV infusion. Response of baseline pathogens cultured from intra-abdominal site or blood. A participant can have more than 1 pathogen. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Microbiological response: Favorable microbiological response assessments include "eradication", "presumed eradication" and "colonization". Unfavorable microbiological response assessments include "persistence", "persistence with increasing MIC", and "presumed persistence. Indeterminate: Study data was not available for evaluation of efficacy. EOT: within 24 hours after completion of last IV infusion. Response of baseline pathogens cultured from intra-abdominal site or blood. A participant can have more than 1 pathogen. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Microbiological response: Favorable microbiological response assessments include "eradication", "presumed eradication" and "colonization". Unfavorable microbiological response assessments include "persistence", "persistence with increasing MIC", and "presumed persistence. Indeterminate: Study data was not available for evaluation of efficacy. EOT: within 24 hours after completion of last IV infusion. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

Microbiological response: Favorable microbiological response assessments include "eradication", "presumed eradication" and "colonization". Unfavorable microbiological response assessments include "persistence", "persistence with increasing MIC", and "presumed persistence. Indeterminate: Study data was not available for evaluation of efficacy. EOT: within 24 hours after completion of last IV infusion. LFU: after 42 calendar days from the day of the first IV infusion, the allowed visit window was 42 to 49 calendar days from the day of the first IV infusion. TOC: after 28 calendar days from the day of the first IV infusion, allowed visit window was 28 to 35 calendar days after the day of the first IV infusion.

An AE was any untoward medical occurrence in a participant or clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. SAE was defined as any untoward medical occurrence that, at any dose that resulted in death, was life-threatening, inpatient hospitalization or prolongation of existing hospitalization, persistent disability/incapacity, a congenital anomaly/birth defect as per medical or scientific judgment. AEs included both SAEs and non-SAEs. TEAE was defined as an AE that emerges or worsened during the effective duration of treatment. All events that started on or after the first dosing day were flagged as TEAEs.

An AE was any untoward medical occurrence in a participant or clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. SAE was defined as any untoward medical occurrence that, at any dose that resulted in death, was life-threatening, inpatient hospitalization or prolongation of existing hospitalization, persistent disability/incapacity, a congenital anomaly/birth defect as per medical or scientific judgment. AEs included both SAEs and non-SAEs. TEAE was defined as an AE that emerges or worsened during the effective duration of treatment. All events that started on or after the first dosing day were flagged as TEAEs.