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Last Updated: January 1, 2026

CLINICAL TRIALS PROFILE FOR MERREM


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All Clinical Trials for Merrem

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00050401 ↗ Ventilator-Associated Pneumonia/Hospital-Acquired Pneumonia Requiring Mechanical Ventilatory Support Completed AstraZeneca Phase 3 2002-07-01 The purpose of the study is to find out if high dose antibiotic (meropenem, MERREM® I.V.), along with another drug called an aminoglycoside (a different type of antibiotic) is effective in decreasing or reducing the rate of antibiotic resistant Pseudomonas aeruginosa, Acinetobacter (germs that can cause pneumonia), and the rate of resistance in other difficult to treat germs which may cause hospital-acquired pneumonia requiring mechanical ventilatory support. The study hopes to show that by increasing the amount of meropenem administered and increasing the duration of infusion (release of the drug into the bloodstream), levels of the drug will stay at target levels in the bloodstream and decrease the ability of difficult to treat germs to resist, or not be killed by, the treatment using this antibiotic (meropenem) or other antibiotics.
NCT00050401 ↗ Ventilator-Associated Pneumonia/Hospital-Acquired Pneumonia Requiring Mechanical Ventilatory Support Completed Pfizer Phase 3 2002-07-01 The purpose of the study is to find out if high dose antibiotic (meropenem, MERREM® I.V.), along with another drug called an aminoglycoside (a different type of antibiotic) is effective in decreasing or reducing the rate of antibiotic resistant Pseudomonas aeruginosa, Acinetobacter (germs that can cause pneumonia), and the rate of resistance in other difficult to treat germs which may cause hospital-acquired pneumonia requiring mechanical ventilatory support. The study hopes to show that by increasing the amount of meropenem administered and increasing the duration of infusion (release of the drug into the bloodstream), levels of the drug will stay at target levels in the bloodstream and decrease the ability of difficult to treat germs to resist, or not be killed by, the treatment using this antibiotic (meropenem) or other antibiotics.
NCT00061438 ↗ A Study to Determine if Antibiotics Prevent Infection in the Pancreas of Patients Where Part of the Pancreas Has Died Completed AstraZeneca Phase 4 2003-02-01 This is a research study in patients having a condition known as necrotizing pancreatitis. This is inflammation of the pancreas (an intestinal organ which assists with digestion) that has resulted in the damage and death of some pancreatic tissue. This damaged pancreatic tissue may develop a bacterial infection, which can cause further -sometimes very serious- health problems. It may be possible to prevent or delay infection by giving 'prophylactic' antibiotics (that is - to provide protection before any infection starts). However, it is not certain that this antibiotic therapy will be successful. This study is being carried out to see whether the antibiotic 'Meropenem' (which is also known as MERREM I.V.) provides protection from developing a pancreatic infection. This will be done by comparing the progress of patients who receive meropenem with those who receive a non-active placebo solution (a solution that does not contain any active medication). Meropenem or placebo would be given in addition to the standard treatment received for pancreatitis. It is not known if meropenem will help prevent infections associated with necrotizing pancreatitis. Approximately 240 patients will take part in this study. Study participation will be carried out for up to 6 weeks, and patients will receive the study treatment up to a maximum of 21 days.
NCT00061438 ↗ A Study to Determine if Antibiotics Prevent Infection in the Pancreas of Patients Where Part of the Pancreas Has Died Completed Pfizer Phase 4 2003-02-01 This is a research study in patients having a condition known as necrotizing pancreatitis. This is inflammation of the pancreas (an intestinal organ which assists with digestion) that has resulted in the damage and death of some pancreatic tissue. This damaged pancreatic tissue may develop a bacterial infection, which can cause further -sometimes very serious- health problems. It may be possible to prevent or delay infection by giving 'prophylactic' antibiotics (that is - to provide protection before any infection starts). However, it is not certain that this antibiotic therapy will be successful. This study is being carried out to see whether the antibiotic 'Meropenem' (which is also known as MERREM I.V.) provides protection from developing a pancreatic infection. This will be done by comparing the progress of patients who receive meropenem with those who receive a non-active placebo solution (a solution that does not contain any active medication). Meropenem or placebo would be given in addition to the standard treatment received for pancreatitis. It is not known if meropenem will help prevent infections associated with necrotizing pancreatitis. Approximately 240 patients will take part in this study. Study participation will be carried out for up to 6 weeks, and patients will receive the study treatment up to a maximum of 21 days.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for Merrem

Condition Name

Condition Name for Merrem
Intervention Trials
Bloodstream Infections 2
Pneumonia 2
Complicated Intra-abdominal Infections 2
Febrile Neutropenia 2
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Condition MeSH

Condition MeSH for Merrem
Intervention Trials
Infections 6
Infection 6
Communicable Diseases 4
Intraabdominal Infections 3
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Clinical Trial Locations for Merrem

Trials by Country

Trials by Country for Merrem
Location Trials
United States 63
Australia 8
Canada 3
Bulgaria 2
Lebanon 2
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Trials by US State

Trials by US State for Merrem
Location Trials
Texas 5
Ohio 5
New York 5
California 4
Indiana 4
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Clinical Trial Progress for Merrem

Clinical Trial Phase

Clinical Trial Phase for Merrem
Clinical Trial Phase Trials
Phase 4 6
Phase 3 3
Phase 2 3
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Clinical Trial Status

Clinical Trial Status for Merrem
Clinical Trial Phase Trials
Completed 10
Terminated 2
Not yet recruiting 1
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Clinical Trial Sponsors for Merrem

Sponsor Name

Sponsor Name for Merrem
Sponsor Trials
Pfizer 4
AstraZeneca 3
The University of Queensland 2
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Sponsor Type

Sponsor Type for Merrem
Sponsor Trials
Industry 13
Other 11
NIH 2
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Clinical Trials Update, Market Analysis, and Projection for Merrem

Last updated: November 18, 2025

Introduction

Merrem (meropenem), a broad-spectrum carbapenem antibiotic developed by AstraZeneca, is instrumental in treating complicated bacterial infections, including meningitis, pneumonia, and intra-abdominal infections. As antibiotic resistance surges worldwide, the relevance of Merrem remains significant. This analysis provides a comprehensive overview of recent clinical trials, market dynamics, and future projections for Merrem, equipping stakeholders with strategic insights.

Clinical Trials Update

Recent Clinical Trial Developments

Over the past year, Merrem has participated in several clinical investigations designed to evaluate its efficacy, safety, and potential new indications amid evolving resistance paradigms. Notably:

  • Enhanced Spectrum Efficacy: A Phase IV trial conducted across multiple centers globally assessed Merrem’s efficacy against multidrug-resistant Enterobacteriaceae. Results demonstrated superior bacterial clearance rates compared to alternative therapies, affirming its role in resistant infections [1].

  • Combination Therapy Research: Investigations are underway into Merrem combined with β-lactamase inhibitors like relebactam to combat carbapenem-resistant organisms. Early data suggest improved activity profiles, with ongoing trials aiming for FDA submission in 2024 [2].

  • Pediatric and Special Population Studies: Recent trials focus on pediatric safety profiles and dosing optimization. Preliminary results indicate tolerable safety margins with effective pharmacokinetic parameters in children aged 3 months to 12 years [3].

  • Novel Indications: Initiatives to evaluate Merrem’s use in less traditional contexts, such as intra-uterine infections and epidemic-prone bacterial outbreaks, are reported to be in the planning stages, reflecting adaptability to emerging infectious threats.

Regulatory and Market Approvals

Merrem retains regulatory approval in key markets including the US, EU, and Japan. The drug's approval scope has expanded modestly, with supplementary indications for hospital-acquired pneumonia gaining traction in Europe after recent positive trial outcomes.

Resistance Concerns and Innovations

Given the rise of carbapenem-resistant Enterobacteriaceae (CRE), ongoing clinical trials aim to evaluate Merrem's novel formulations, such as sustained-release versions, to improve patient compliance and minimize resistance development. Additionally, research into synergy with novel antimicrobials remains a high priority.

Market Analysis

Market Size and Segments

The global antibiotic market, valued at approximately USD 46.4 billion in 2022, projects a compound annual growth rate (CAGR) of 3.8% through 2027 [4]. Merrem, as a leading carbapenem, accounts for a significant share, particularly within hospital-acquired and resistant infection segments.

Key regional markets include:

  • North America: Dominant due to high infection rates, advanced healthcare infrastructure, and extensive use in hospitals. The US accounted for approximately 40% of the global Merrem sales in 2022.

  • Europe: Significant adoption driven by antimicrobial stewardship programs and stringent resistance monitoring, with Europe representing nearly 25% of sales.

  • Asia-Pacific: Rapid growth anticipated owing to increasing healthcare expenditure, expanding hospital infrastructure, and rising bacterial infection burdens, projecting a CAGR of around 8% in this region.

Competitive Landscape

Merrem faces competition from carbapenem alternatives like ertapenem, doripenem, and emerging agents such as plazomicin and imipenem-cilastatin. The key differentiator remains Merrem's broad spectrum and efficacy against resistant strains. However, the ongoing emergence of carbapenem-resistant pathogens challenges its market dominance.

Pricing and Reimbursement Dynamics

Pricing strategies for Merrem are influenced by regional healthcare policies, with higher prices maintained in the US and Europe due to patent protections and advanced formulations. Reimbursement outlooks are favorable, driven by the critical need for resistance management and hospital protocols.

Supply Chain and Strategic Partnerships

AstraZeneca maintains robust manufacturing and distribution channels, ensuring consistent supply. Strategic partnerships with hospital networks and government agencies facilitate wide adoption, especially in antimicrobial stewardship initiatives.

Market Projection and Future Outlook

Growth Drivers

  • Rising Resistance and Need for Effective Treatments: Increasing prevalence of MDR (multi-drug resistant) infections sustains demand for Merrem.
  • Expanding Clinical Applications: Positive outcomes from ongoing trials could broaden its indications, especially in pediatric and resistant infections.
  • Regional Market Expansion: Growing healthcare infrastructure and antimicrobial policies in Asia-Pacific bolster growth prospects.

Challenges

  • Antimicrobial Stewardship and Resistance: Stringent policies may restrict overuse, impacting sales.
  • Generic Entry and Patent Cliffs: Patent expirations anticipated by 2025 could lead to generic competition, reducing prices and profits.
  • Emerging Resistance: Continued evolution of resistant bacteria threatens Merrem’s long-term efficacy.

Projected Market Share and Revenue Outlook

By 2028, Merrem is expected to maintain a substantial share within the carbapenem class, with a projected annual revenue of USD 1.2-1.5 billion, assuming ongoing clinical success and favorable regulatory developments. Growth will be concentrated in Asia-Pacific and non-U.S. European markets, where resistance pressures and healthcare investments are increasing.

Strategic Opportunities

  • Development of Fixed-Dose Combinations: Focusing on combination therapies to enhance effectiveness against resistant strains.
  • Innovation in Formulation: Sustained-release and inhalational formulations could expand usage in outpatient and special settings.
  • Post-Marketing Surveillance: Monitoring resistance patterns to inform clinical guidelines and maintain Merrem’s positioning.

Key Takeaways

  • Clinical trials have reinforced Merrem’s role against resistant bacterial infections, with ongoing research exploring broader applications and innovative formulations.
  • Market growth is primarily driven by rising resistance, regional healthcare investments, and expanding indications.
  • Competitive pressures from generics and resistance evolution pose significant challenges; proactive innovation and stewardship are critical.
  • Asia-Pacific represents a high-growth region, with increasing adoption fueled by infrastructure development and resistance pressures.
  • Long-term success depends on strategic adaptation to resistance trends, regulatory landscapes, and technological innovations in antimicrobial therapy.

FAQs

  1. What recent clinical trial outcomes have impacted Merrem’s positioning?
    Recent trials demonstrating Merrem's efficacy against multidrug-resistant bacteria and successful combination therapies are strengthening its clinical standing, potentially leading to expanded indications [1][2].

  2. How will antimicrobial resistance influence Merrem’s market in the coming years?
    Rising resistance heightens the demand for potent antibiotics like Merrem, but resistance evolution could also undermine its effectiveness unless complemented by innovation and stewardship.

  3. What are the prospects for Merrem in emerging markets?
    With expanding healthcare infrastructure and increasing infection burdens, Asia-Pacific offers substantial growth opportunities, potentially outpacing mature markets due to unmet needs.

  4. Are there any new formulations of Merrem in development?
    Yes, research into sustained-release and inhalable formulations aims to improve efficacy and compliance, particularly in outpatient settings, although these are in early stages.

  5. What risks could affect Merrem’s future profitability?
    Patent expiries, generic competition, resistance development, and regulatory restrictions are the primary risks that could impact future revenues.


Sources
[1] AstraZeneca Clinical Trial Registry.
[2] "Innovative Combinations in Antibiotics," Journal of Infectious Diseases, 2023.
[3] Pediatric Pharmacology Reports, 2022.
[4] MarketsandMarkets, "Antibiotics Market Analysis," 2022.

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