Safety, Tolerability, Efficacy and Pharmacokinetics of Imipenem/Cilastatin/Relebactam (MK-7655A) in Pediatric Participants With Gram-negative Bacterial Infection (MK-7655A-021)

A Phase 2/3 Open-label, Randomized, Active-controlled Clinical Study to Evaluate the Safety, Tolerability, Efficacy and Pharmacokinetics of MK-7655A in Pediatric Participants From Birth to Less Than 18 Years of Age With Confirmed or Suspected Gram-negative Bacterial Infection

The primary purpose of this study is to evaluate the safety and tolerability of imipenem/cilastatin/relebactam (IMI/REL) in participants from birth to less than 18 years of age with confirmed or suspected gram-negative bacterial infection. Participants are expected to require hospitalization through completion of intravenous (IV) study intervention, and have at least one of the following primary infection types: hospital-acquired bacterial pneumonia (HABP) or ventilator-associated bacterial pneumonia (VABP); complicated intra-abdominal infection (cIAI); or complicated urinary tract infection (cUTI). Participants will be randomized in a 3:1 ratio to receive IMI/REL or active control. This study will also evaluate the efficacy of IMI/REL by assessing all-cause mortality at Day 28 post-randomization, as well as clinical and microbiological response to treatment. It will also evaluate the pharmacokinetics of IMI/REL.

Study Overview

• Status: Recruiting
• Conditions: Suspected or Documented Gram-negative Bacterial Infection
• Intervention / Treatment: Drug: IMI/REL; Drug: Active Control

• Study Type: Interventional
• Enrollment (Estimated): 140
• Phase: Phase 2; Phase 3

Contacts and Locations

• Study Contact: Name: Toll Free Number; Phone Number: 1-888-577-8839; Email: Trialsites@merck.com

Study Locations

• Bulgaria
  • Burgas, Bulgaria, 8127
    • Completed
    • UMHAT Deva Maria. EOOD ( Site 0165)
  • Montana, Bulgaria, 3400
    • Completed
    • MHAT City Clinic Sv. Georgi EOOD ( Site 0167)
  • Pleven, Bulgaria, 5800
    • Completed
    • UMHAT Dr. Georgi Stranski EAD ( Site 0174)
  • Ruse, Bulgaria, 7002
    • Recruiting
    • UMHAT Kanev AD ( Site 0168)
    • Contact: Study Coordinator; Phone Number: +359899975275
  • Ruse, Bulgaria, 7002
    • Recruiting
    • UMHAT Kanev AD ( Site 0169)
    • Contact: Study Coordinator; Phone Number: +359888209200
  • Sliven, Bulgaria, 8800
    • Completed
    • MHAT Dr. Ival Seliminski ( Site 0173)
• Chile
  • Region M. De Santiago
    • Santiago, Region M. De Santiago, Chile, 8380418
      • Recruiting
      • Hospital Roberto del Río ( Site 0802)
      • Contact: Study Coordinator; Phone Number: 992360000
• Colombia
  • Antioquia
    • Medellin, Antioquia, Colombia, 050010
      • Active, not recruiting
      • Fundacion Hospital San Vicente de Paul ( Site 0269)
  • Atlantico
    • Barranquilla, Atlantico, Colombia, 080020
      • Recruiting
      • Clinica de la Costa S.A.S. ( Site 0264)
      • Contact: Study Coordinator; Phone Number: +573157609110
  • Distrito Capital De Bogota
    • Bogota, Distrito Capital De Bogota, Colombia, 11001000
      • Recruiting
      • Sociedad de Cirugía de Bogotá - Hospital de San Jose ( Site 0265)
      • Contact: Study Coordinator; Phone Number: +573207532651
    • Bogota, Distrito Capital De Bogota, Colombia, 111211
      • Recruiting
      • Fundacion Hospital Infantil Universitario de San Jose ( Site 0268)
      • Contact: Study Coordinator; Phone Number: +573108059791
  • Valle Del Cauca
    • Cali, Valle Del Cauca, Colombia, 760032
      • Recruiting
      • Fundacion Valle del Lili ( Site 0266)
      • Contact: Study Coordinator; Phone Number: +573154896219
• Estonia
  • Harjumaa
    • Tallinn, Harjumaa, Estonia, 13419
      • Recruiting
      • Tallinn Children Hospital ( Site 0209)
      • Contact: Study Coordinator; Phone Number: +37255573326
• France
  • Alpes-Maritimes
    • Nice, Alpes-Maritimes, France, 06200
      • Recruiting
      • Hopitaux Pediatriques CHU Lenval ( Site 0143)
      • Contact: Study Coordinator; Phone Number: +33492030579
  • Cote-d Or
    • Dijon, Cote-d Or, France, 21000
      • Completed
      • Hopital Francois Mitterand ( Site 0146)
  • Nord-Pas-de-Calais
    • Lille, Nord-Pas-de-Calais, France, 59120
      • Recruiting
      • Hopital Jeanne de Flandre ( Site 0145)
      • Contact: Study Coordinator; Phone Number: 33320446059
• Greece
  • Thessaloniki, Greece, 546 42
    • Recruiting
    • Hippokration General Hospital of Thessaloniki ( Site 0244)
    • Contact: Study Coordinator; Phone Number: +302310892444
  • Attiki
    • Athens, Attiki, Greece, 11527
      • Recruiting
      • Pan and Aglaia Kyriakou Children s Hospital ( Site 0247)
      • Contact: Study Coordinator; Phone Number: +302107793000
    • Athens, Attiki, Greece, 115 27
      • Completed
      • University of Athens - Aghia Sophia Childrens Hospital ( Site 0243)
• Hungary
  • Hajdu-Bihar
    • Debrecen, Hajdu-Bihar, Hungary, 4032
      • Recruiting
      • Debreceni Egyetem Klinikai Kozpont ( Site 0100)
      • Contact: Study Coordinator; Phone Number: +36305769835
  • Szabolcs-Szatmar-Bereg
    • Nyiregyhaza, Szabolcs-Szatmar-Bereg, Hungary, 4400
      • Recruiting
      • Szabolcs-Szatmar-Bereg Megyei Kórházak és Egyetemi Otatókórház-Gyermekosztály ( Site 0105)
      • Contact: Study Coordinator; Phone Number: +36302565180
• Israel
  • Haifa, Israel, 3109601
    • Recruiting
    • Rambam Medical Center ( Site 0189)
    • Contact: Study Coordinator; Phone Number: +97247774810
  • Jerusalem, Israel, 9112001
    • Recruiting
    • Hadassah Ein Karem Hebrew University Medical Center ( Site 0188)
    • Contact: Study Coordinator; Phone Number: +97226777111
  • Petah Tikva, Israel, 4920235
    • Completed
    • Schneider Children's Medical Center ( Site 0187)
  • Ramat Gan, Israel, 5262100
    • Recruiting
    • Chaim Sheba Medical Center ( Site 0190)
    • Contact: Study Coordinator; Phone Number: +97235305978
• Mexico
  • Aguascalientes, Mexico, 20259
    • Recruiting
    • Centenario Hospital Miguel Hidalgo-Pediatrics Department ( Site 0290)
    • Contact: Study Coordinator; Phone Number: +524499946720
  • Ciudad de Mexico, Mexico, 04530
    • Recruiting
    • Instituto Nacional de Pediatria ( Site 0291)
    • Contact: Study Coordinator; Phone Number: +525510840900
  • Baja California
    • Tijuana, Baja California, Mexico, 22000
      • Completed
      • Hospital General de Tijuana ( Site 0284)
  • Morelos
    • Emiliano Zapata, Morelos, Mexico, 62765
      • Completed
      • Hospital del Nino y Adolescente Morelense ( Site 0286)
• Norway
  • Hordaland
    • Bergen, Hordaland, Norway, 5009
      • Recruiting
      • Haukeland Universitetssjukehus ( Site 0500)
      • Contact: Study Coordinator; Phone Number: +4755975720
• Philippines
  • National Capital Region
    • Manila, National Capital Region, Philippines, 1000
      • Completed
      • University of the Philippines-Philippine General Hospital ( Site 0318)
    • Quezon City, National Capital Region, Philippines, 1104
      • Completed
      • Philippine Children s Medical Center ( Site 0317)
• Poland
  • Kujawsko-pomorskie
    • Torun, Kujawsko-pomorskie, Poland, 87-100
      • Completed
      • Wojewodzki Szpital Zespolony im. Rydgiera ( Site 0220)
  • Lodzkie
    • Lodz, Lodzkie, Poland, 93-338
      • Recruiting
      • Instytut Centrum Zdrowia Matki Polki ( Site 0223)
      • Contact: Study Coordinator; Phone Number: +48422711391
  • Mazowieckie
    • Lomianki, Mazowieckie, Poland, 05-092
      • Recruiting
      • SPZOZ im. Dzieci Warszawy w Dziekanowie Lesnym ( Site 0226)
      • Contact: Study Coordinator; Phone Number: +48227657153
• Russian Federation
  • Moskva
    • Moscow, Moskva, Russian Federation, 117197
      • Completed
      • Pediatric Hematology Oncology and Immunology Centre n.a. D.Rogachev. ( Site 0233)
    • Moscow, Moskva, Russian Federation, 119049
      • Suspended
      • Morozovskaya Children City Clinical Hospital ( Site 0241)
  • Novosibirskaya Oblast
    • Novosibirsk, Novosibirskaya Oblast, Russian Federation, 630011
      • Suspended
      • State Budgetary Healthcare Institution of Novosibirsk Region City Childrens Clinical Emergency Hospi
  • Sankt-Peterburg
    • Saint Petersburg, Sankt-Peterburg, Russian Federation, 194100
      • Completed
      • St.Petersburg State Pediatric Medical University ( Site 0236)
    • Saint Petersburg, Sankt-Peterburg, Russian Federation, 198205
      • Completed
      • Children's City Clinical Hospital #1 ( Site 0237)
    • St. Petersburg, Sankt-Peterburg, Russian Federation, 192289
      • Suspended
      • Children s City Clinical Hospital 5 n.a. N.F. Filatov ( Site 0235)
  • Smolenskaya Oblast
    • Smolensk, Smolenskaya Oblast, Russian Federation, 214018
      • Suspended
      • Smolensk Regional Clinical Hospital ( Site 0231)
  • Vologodskaya Oblast
    • Vologda, Vologodskaya Oblast, Russian Federation, 160022
      • Completed
      • Regional Childrens Clinical Hospital ( Site 0400)
• South Africa
  • Gauteng
    • Johannesburg, Gauteng, South Africa, 2013
      • Recruiting
      • Chris Hani Baragwanath Academic Hospital ( Site 0156)
      • Contact: Study Coordinator; Phone Number: +27119330270
    • Johannesburg, Gauteng, South Africa, 2001
      • Completed
      • Empilweni Services and Research Unit ( Site 1557)
    • Pretoria, Gauteng, South Africa, 0208
      • Recruiting
      • Molotlegi Street ( Site 0155)
      • Contact: Study Coordinator; Phone Number: +27125215633
• Spain
  • Madrid, Spain, 28009
    • Recruiting
    • Hospital Infantil Universitario Nino Jesus ( Site 0114)
    • Contact: Study Coordinator; Phone Number: +34915035900
  • Madrid, Spain, 28046
    • Completed
    • Hospital Universitario La Paz ( Site 0113)
  • Sevilla, Spain, 41043
    • Completed
    • Hospital Universitario Virgen del Rocio ( Site 0115)
• Turkey
  • Adana, Turkey, 01330
    • Recruiting
    • Cukurova University Medical Faculty ( Site 0200)
    • Contact: Study Coordinator; Phone Number: +905326534166
  • Ankara, Turkey, 06590
    • Completed
    • Ankara Universitesi Tip Fakultesi. ( Site 0202)
  • Eskisehir, Turkey, 26480
    • Recruiting
    • Eskisehir Osmangazi University Medical ( Site 0201)
    • Contact: Study Coordinator; Phone Number: +905339243269
  • Istanbul, Turkey, 34453
    • Recruiting
    • SBU Sariyer Hamidiye Etfal Egitim ve Arastirma Hastanesi ( Site 0198)
    • Contact: Study Coordinator; Phone Number: +905055803297
  • Izmir, Turkey, 35100
    • Completed
    • Ege Universitesi Tıp Fakultesi Hastanesi ( Site 0199)
• Ukraine
  • Dnipropetrovska Oblast
    • Dnipro, Dnipropetrovska Oblast, Ukraine, 49100
      • Suspended
      • SI Dnipropetrovsk Regional Children Clinical Hospital DOR ( Site 0121)
    • Kryvyy Rig, Dnipropetrovska Oblast, Ukraine, 50082
      • Completed
      • Communal non-commercial enterprise "Kryvorizka city clinical hospital 16" of Kryvyy Rig city council
  • Ivano-Frankivska Oblast
    • Ivano-Frankivsk, Ivano-Frankivska Oblast, Ukraine, 76014
      • Recruiting
      • Ivano-Frankivsk Regional Children Clinical Hospital ( Site 0131)
      • Contact: Study Coordinator; Phone Number: +380681040592
  • Kharkivska Oblast
    • Kharkiv, Kharkivska Oblast, Ukraine, 61075
      • Suspended
      • Kharkiv City Children Hospital 16 ( Site 0130)
  • Poltavska Oblast
    • Poltava, Poltavska Oblast, Ukraine, 36004
      • Suspended
      • Municipal Enterprise Children's City Clinical Hospital in Poltava City Council ( Site 0122)
• United States
  • Arizona
    • Tucson, Arizona, United States, 85724
      • Completed
      • Banner University Medical Center ( Site 0356)
  • California
    • Long Beach, California, United States, 90806
      • Completed
      • Miller Children's & Women's Hospital ( Site 0349)
    • San Diego, California, United States, 92123
      • Recruiting
      • Rady Children's Hospital-San Diego ( Site 0347)
      • Contact: Study Coordinator; Phone Number: 858-966-8381
  • Massachusetts
    • Boston, Massachusetts, United States, 02111
      • Completed
      • Tufts Medical Center-Floating Hospital for Children ( Site 0350)
  • New Mexico
    • Albuquerque, New Mexico, United States, 87106
      • Completed
      • University of New Mexico ( Site 0358)
  • Texas
    • San Antonio, Texas, United States, 78229
      • Recruiting
      • University Hospital ( Site 0360)
      • Contact: Study Coordinator; Phone Number: 210-567-5262
  • Virginia
    • Richmond, Virginia, United States, 23298
      • Completed
      • Children's Hospital of Richmond at VCU ( Site 0359)
  • West Virginia
    • Morgantown, West Virginia, United States, 26506
      • Recruiting
      • West Virginia University Ruby Memorial Hospital ( Site 0344)
      • Contact: Study Coordinator; Phone Number: 304-293-1201

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: No older than 15 years (Child)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Requires hospitalization and treatment with IV antibacterial therapy for confirmed or suspected gram-negative bacterial infection (in the absence of meningitis), and is expected to require hospitalization through completion of IV study intervention, with at least 1 of the following primary infection types: HABP or VABP; cIAI; or cUTI.
• For Age Cohorts 4 and 5, participant is at least 37 weeks postmenstrual age at the time of signing the informed consent/assent.
• If female, must not be pregnant or breastfeeding, and at least 1 of the following conditions must apply: must not be a woman of childbearing potential (WOCBP); OR, if a WOCBP, must agree to follow contraceptive guidance during the intervention period and for at least 24 hours after the last dose of study intervention.
• Has sufficient intravascular access to receive study drug through an existing peripheral or central line.

Exclusion Criteria:

• Is expected to survive less than 72 hours.
• Has a concurrent infection that would interfere with evaluation of response to the study antibacterials (IMI/REL or Active Control), including any of the following: endocarditis; osteomyelitis; meningitis; prosthetic joint infection; active pulmonary tuberculosis; disseminated fungal infection; concomitant infection at the time of randomization that requires non-study systemic antibacterial therapy in addition to IV study treatment or oral step-down therapy (medications with only gram-positive activity [e.g., vancomycin, linezolid] are allowed).
• Has HABP/VABP caused by an obstructive process, including lung cancer (or other malignancy metastatic to the lungs resulting in pulmonary obstruction) or other known obstruction.
• Has a cUTI, with any of the following: complete obstruction of any portion of the urinary tract (ie, requiring a permanent indwelling urinary catheter or instrumentation); documented reflux of ileal loop urinary diversion; suspected or confirmed perinephric or intrarenal abscess; suspected or confirmed prostatitis, urethritis, or epididymitis; trauma to pelvis/urinary tract; presence of indwelling urinary catheter which cannot be removed at study entry.
• Has any of the following medical conditions at screening: history of a seizure disorder (requiring ongoing treatment with anti-convulsive therapy or prior treatment with anti-convulsive therapy within the last 3 years); cystic fibrosis; history of serious allergy, hypersensitivity (eg, anaphylaxis), or any serious reaction to IMI, or to any carbapenem, cephalosporin, penicillin, or other β-lactam agent, or to other β-lactamase inhibitors (eg, tazobactam, sulbactam, clavulanic acid, avibactam).
• Has a history or current evidence of any condition, therapy, laboratory abnormality, or other circumstance that might expose the participant to risk by participating in the study, confound study results, or interfere with the participant's participation for the full duration of the study.
• If less than 3 months of age, has received more than 72 hours of empiric antibacterial treatment for suspected meningitis prior to initiation of IV study intervention.
• If 3 months of age or older, or <3 months of age without suspected meningitis, has received potentially therapeutic antibacterial therapy (eg, with gram-negative activity), including bladder infusions with topical urinary antiseptics or antibacterial agents, for a duration of more than 24 hours during the 48 hours preceding the first dose of study intervention.
• Is anticipated to be treated with any of the following medications: valproic acid or divalproex sodium (or has used valproic acid or divalproex sodium in the 2 weeks prior to screening) through 24 hours after completion of the final dose of IV study intervention for participants who receive IMI/REL or carbapenem; concomitant IV, oral, or inhaled antimicrobial agents with gram-negative activity, in addition to those designated in the study intervention groups, during the course of all (IV/oral) study intervention; planned receipt of suppressive/prophylactic antibiotics with gram-negative activity after completion of study intervention.
• Is currently participating in or has participated in an interventional clinical study with an investigational compound or device within 30 days prior to screening.
• Has enrolled previously in the current study and been discontinued, or has received REL for any other reason.
• Has an estimated creatinine clearance (based on the Cockcroft-Gault equation, for participants ≥12 years of age) or estimated glomerular filtration rate (eGFR, based on the modified Schwartz equation, for participants <12 years of age) below that specified for the appropriate age range; or requires peritoneal dialysis, hemodialysis, or hemofiltration.
• Has alanine aminotransferase (ALT) or aspartate aminotransferase (AST) ≥5 × upper limit of normal (ULN) at the time of screening. NOTE: Patients with acute hepatic failure or acute decompensation of chronic hepatic failure should also be excluded.
• Is a user of recreational or illicit drugs or has had a recent history of drug or alcohol abuse or dependence.
• Is or has an immediate family member (eg, spouse, parent/legal guardian, sibling, or child) who is investigational site or Sponsor staff directly involved with this study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: IMI/REL; Participants with cIAI or cUTI will receive imipenem/cilastatin/relebactam (IMI/REL) via IV infusion, once every 6 hours, for a minimum of 5 days (with optional oral switch after 3 days) up to a maximum of 14 days. Participants with HABP/VABP will receive IMI/REL via IV infusion, once every 6 hours, for a minimum of 7 days up to a maximum of 14 days. All oral switch medications will be chosen from a list of acceptable approved agents and will be administered per authorized Package Insert (PI), Summary of Product Characteristics (SPC), or international treatment guidelines.	Drug: IMI/REL; Age-based dosing: 12 to <18 years, IMI 500 and REL 250 mg, IV infusion every 6 hours; 2 to <12 years, IMI 15 and REL 7.5 mg/kg, IV infusion every 6 hours; 3 months to <2 years, IMI 15 and REL 7.5 mg/kg, IV infusion every 6 hours; Birth to <3 month, IMI 15 and REL 7.5 mg/kg, IV infusion every 8 hours NOTE: Participants with cIAI or cUTI may be switched to oral therapy after at least 3 days of IV study intervention.; Other Names: MK-7655A
Active Comparator: Active Control; Participants with cIAI or cUTI will receive active control via IV infusion for a minimum of 5 days (with optional oral switch after 3 days) up to a maximum of 14 days. Participants with HABP/VABP will receive active control via IV infusion for a minimum of 7 days up to a maximum of 14 days. All active control and oral switch medications will be administered per authorized PI, SPC, or international treatment guidelines. All active control and oral switch medications will be chosen from a list of acceptable approved agents.	Drug: Active Control; All active control medications will be chosen from a list of acceptable approved agents for each infection type (HABP or VABP, cIAI, and UTI) and will be given via IV infusion, per authorized Package Insert (PI), Summary of Product Characteristics (SPC), or international treatment guidelines. NOTE: Participants with cIAI or cUTI may be switched to oral therapy after at least 3 days of IV study intervention. All oral switch medications will be chosen from a list of acceptable approved agents.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Percentage of Participants With One or More Adverse Event (AE)	An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study intervention. The percentage of participants with AEs will be presented.	Up to 28 days
Percentage of Participants Who Discontinued Study Medication Due to an Adverse Event (AE)	An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study intervention. The percentage of participants who discontinued study medication due to an AE will be presented.	Up to 14 days

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number of Deaths by All Causes Through Day 28	All-cause mortality up to 28 days post-randomization will be presented.	Up to Day 28
Percentage of Participants With a Favorable Clinical Response at End of Therapy (EOT)	The percentage of participants with a favorable clinical response at EOT will be presented.	Day 5 up to Day 14
Percentage of Participants With a Favorable Clinical Response at Early Follow-Up (EFU)	The percentage of participants with a favorable clinical response at EFU will be presented.	Day 12 up to Day 28
Percentage of Participants With a Favorable Clinical Response at Late Follow-Up (LFU)	The percentage of participants with a favorable clinical response at LFU will be presented.	Day 19 up to Day 42
Percentage of Participants With a Favorable Microbiological Response at End of Therapy (EOT)	The percentage of participants with a favorable microbiological response at EOT will be presented.	Day 5 up to Day 14
Percentage of Participants With a Favorable Microbiological Response at End of Follow-Up (EFU)	The percentage of participants with a favorable microbiological response at EFU will be presented.	Day 12 up to Day 28
Percentage of Participants With a Favorable Microbiological Response at Late Follow-Up (LFU)	Percentage of participants with a favorable microbiological response at LFU will be presented.	Day 19 up to Day 42
Area Under the Curve From Time 0 to 24 Hours (AUC0-24) of Imipenem Following Administration of IMI/REL	Blood samples for AUC0-24 of imipenem analysis will be collected on Day 1 at 30 minutes prior to start of first dose of IV study intervention, within 10 minutes after the end of the first infusion, and 2 to 6 hours after the start of first infusion; and once at the on-therapy (OTX) visit (Day 2 or Day 3) at 2 to 6 hours after start of any infusion that day.	On Day 1 at 30 minutes prior to start of first IV infusion of study drug, at end of first infusion, and 2 to 6 hours after start of first infusion; and once at on-therapy visit (Day 2 or Day 3) at 2 to 6 hours after start of any infusion that day.
Area Under the Curve From Time 0 to 24 Hours (AUC0-24) of Relebactam Following Administration of IMI/REL	Blood samples for AUC0-24 of relebactam analysis will be collected on Day 1 at 30 minutes prior to start of first dose of IV study intervention, within 10 minutes after the end of the first infusion, and 2 to 6 hours after the start of first infusion; and once at the on-therapy (OTX) visit (Day 2 or Day 3) at 2 to 6 hours after start of any infusion that day.	On Day 1 at 30 minutes prior to start of first IV infusion of study drug, at end of first infusion, and 2 to 6 hours after start of first infusion; and once at on-therapy visit (Day 2 or Day 3) at 2 to 6 hours after start of any infusion that day.
Concentration at End of Infusion (Ceoi) of Imipenem Following Administration of IMI/REL	Blood samples for Ceoi of imipenem analysis will be collected within 10 minutes after the end of the first infusion on Day 1.	At the end of the first infusion on Day 1.
Concentration at End of Infusion (Ceoi) of Relabactam Following Administration of IMI/REL	Blood samples for Ceoi of relabactam analysis will be collected within 10 minutes after the end of the first infusion on Day 1.	At the end of the first infusion on Day 1.
Percentage of Time Imipenem Concentration Is Above Minimum Inhibitory Concentration (%T>MIC of Imipenem) Following Administration of IMI/REL	Blood samples for %T>MIC of imipenem analysis will be collected on Day 1 at 30 minutes prior to start of first dose of IV study intervention, within 10 minutes after the end of the first infusion, and 2 to 6 hours after the start of first infusion; and once at the on-therapy (OTX) visit (Day 2 or Day 3) at 2 to 6 hours after start of any infusion that day.	On Day 1 at 30 minutes prior to start of first IV infusion of study drug, at end of first infusion, and 2 to 6 hours after start of first infusion; and once at on-therapy visit (Day 2 or Day 3) at 2 to 6 hours after start of any infusion that day.

Collaborators and Investigators

• Sponsor: Merck Sharp & Dohme LLC
• Investigators: Study Director: Medical Director, Merck Sharp & Dohme LLC

Publications and helpful links

Helpful Links

• Merck Clinical Trials Information

Study record dates

Study Major Dates

• Study Start (Actual): October 8, 2019
• Primary Completion (Estimated): June 12, 2024
• Study Completion (Estimated): June 12, 2024

Study Registration Dates

• First Submitted: May 28, 2019
• First Submitted That Met QC Criteria: May 28, 2019
• First Posted (Actual): May 31, 2019

Study Record Updates

• Last Update Posted (Actual): March 13, 2024
• Last Update Submitted That Met QC Criteria: March 12, 2024
• Last Verified: March 1, 2024

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pathologic Processes; Disease Attributes; Bacterial Infections and Mycoses; Infections; Communicable Diseases; Bacterial Infections; Gram-Negative Bacterial Infections; Molecular Mechanisms of Pharmacological Action; Anti-Infective Agents; Enzyme Inhibitors; Anti-Bacterial Agents; beta-Lactamase Inhibitors; Relebactam
• Other Study ID Numbers: 7655A-021; MK-7655A-021 (Other Identifier: Merck); 2019-000338-20 (EudraCT Number)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Plan Description: http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No