Antimicrobial Therapy for Difficult-to-treat Pseudomonas Aeruginosa

NCT ID: NCT06738771

Last Updated: 2025-04-17

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

RECRUITING

Total Enrollment

600 participants

Study Classification

OBSERVATIONAL

Study Start Date

2025-03-11

Study Completion Date

2027-01-31

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

The primary objective of the ADDICT study is to assess and compare the clinical efficacy of available options for antimicrobial therapy (new beta-lactam/beta-lactamase inhibitor combination, cefiderocol or older agents such as aminoglycosides and colistin) in unselected patients with infection due to difficult-to-treat P. aeruginosa.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Infections due to Pseudomonas aeruginosa isolates with acquired resistances to all first-line antipseudomonal beta-lactams and fluoroquinolones (difficult-to-treat isolates - DTR), pose serious therapeutical challenges, especially in critically ill and/or immunocompromised patients. Certain new beta-lactam/beta-lactamase inhibitor combinations (BL/BLI (beta lactamine/ beta lactamase inhibitor) - i.e., ceftolozane-tazobactam, ceftazidime-avibactam, imipenem-relebactam, others) and cefiderocol have shown promising results for the treatment of infections due to DTR P. aeruginosa. However, multicenter data on their real-life utilization in this indication are still scarce.

The ADDICT study is a prospective, multicenter cohort study including unselected patients with DTR P. aeruginosa infection requiring definite intravenous antimicrobial therapy. The primary objective of the study is to investigate the clinical efficacy of available options (new BL/BLI, cefiderocol or older agents such as aminoglycosides and colistin) in this population. Secondary objectives are to compare the clinical and microbiological efficacy of available options in infections due to DTR P. aeruginosa with in vitro susceptibility to more than one last-resort drug, to compare the incidence of non-ecological adverse events observed with these drugs, to assess the incidence of resistance emergence under therapy and to elucidate the molecular mechanisms of resistance emergence, to assess the benefits and risks of combination therapy in this indication, to compare the acquisition rates of multidrug-resistant bacteria other than DTR P. aeruginosa, and Clostridioides difficile infection, to compare Day-28 and in-hospital all-cause mortality rates.

Patients will be recruited in 60 hospital centers contributing to four French networks of research in infectious diseases and critical care (CRICS-TRIGGERSEP, ReaRezo, OutcomeRéa, RENARCI - PROMISE metanetwork). Clinical variables will be collected through an electronic case-report form. DTR P. aeruginosa isolates will be sent to the National Reference Center of Antimicrobial Resistance in P. aeruginosa for centralized analyses (extended antimicrobial susceptibility testing, MLST, whole-genome sequencing of successive isolates if resistance emergence under therapy).

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Pseudomonas Infections Pseudomonas Aeruginosa Prognosis Drug Resistance, Multiple, Bacterial Antibacterial Agents Beta-lactam Antibiotics

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

1

patients with invasive P. aeruginosa DTR infection requiring definitive intravenous antibiotic therapy

No interventions assigned to this group

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* All patients aged 18 or over and requiring intravenous definite antimicrobial therapy for a DTR P. aeruginosa infection

Exclusion Criteria

* Cystic fibrosis
* P. aeruginosa DTR colonization or P. aeruginosa DTR infection not requiring definitive intravenous antibiotic therapy
* Protected person (under guardianship or curatorship)
* Persons under court protection
* Persons deprived of liberty
* Opposition expressed for participation in the study
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

Centre Hospitalier Régional d'Orléans

OTHER

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Responsibility Role SPONSOR

Principal Investigators

Learn about the lead researchers overseeing the trial and their institutional affiliations.

Francois BARBIER, Professor

Role: PRINCIPAL_INVESTIGATOR

Centre Hospitalier Universitaire d'Orléans

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

CHU Amiens

Amiens, , France

Site Status NOT_YET_RECRUITING

CH Argenteuil

Argenteuil, , France

Site Status NOT_YET_RECRUITING

CH Bayonne

Bayonne, , France

Site Status NOT_YET_RECRUITING

CHU de BESANCON

Besançon, , France

Site Status NOT_YET_RECRUITING

CH Bethune

Béthune, , France

Site Status NOT_YET_RECRUITING

CHU Avicenne

Bobigny, , France

Site Status NOT_YET_RECRUITING

CH Bourgoin-Jallieu

Bourgoin, , France

Site Status NOT_YET_RECRUITING

CH Métropole Savoie

Chambéry, , France

Site Status NOT_YET_RECRUITING

Ch de Chartres

Chartres, , France

Site Status NOT_YET_RECRUITING

CHU Clermont Ferrand

Clermont-Ferrand, , France

Site Status NOT_YET_RECRUITING

CHI Créteil

Créteil, , France

Site Status NOT_YET_RECRUITING

CHU Henri Mondor

Créteil, , France

Site Status NOT_YET_RECRUITING

CHI Elbeuf Louviers

Elbeuf, , France

Site Status NOT_YET_RECRUITING

CH Sud Essone

Étampes, , France

Site Status NOT_YET_RECRUITING

Hopital Raymond Poincaré

Garches, , France

Site Status NOT_YET_RECRUITING

CHU Grenoble

Grenoble, , France

Site Status NOT_YET_RECRUITING

CH Haguenau

Haguenau, , France

Site Status NOT_YET_RECRUITING

CHD Vendée

La Roche-sur-Yon, , France

Site Status RECRUITING

Hopital Bicetre

Le Kremlin-Bicêtre, , France

Site Status NOT_YET_RECRUITING

CHU Limoges

Limoges, , France

Site Status NOT_YET_RECRUITING

CHU Lyon Sud

Lyon, , France

Site Status NOT_YET_RECRUITING

CHU Lyon

Lyon, , France

Site Status NOT_YET_RECRUITING

CHY Lyon

Lyon, , France

Site Status NOT_YET_RECRUITING

Hopital Saint-Joseph Saint Luc

Lyon, , France

Site Status NOT_YET_RECRUITING

CHU Montpellier

Montpellier, , France

Site Status NOT_YET_RECRUITING

CHRU Nancy

Nancy, , France

Site Status RECRUITING

Chu de Nantes

Nantes, , France

Site Status NOT_YET_RECRUITING

CHU de Nice

Nice, , France

Site Status NOT_YET_RECRUITING

Centre Hospitalier Universitaire d'Orléans

Orléans, , France

Site Status RECRUITING

Hopital Bichat

Paris, , France

Site Status RECRUITING

Hopital Cochin

Paris, , France

Site Status NOT_YET_RECRUITING

Hopital LARIBOISIERE

Paris, , France

Site Status NOT_YET_RECRUITING

Hopital Pitie Salpetriere

Paris, , France

Site Status NOT_YET_RECRUITING

Hopital Saint-Antoine

Paris, , France

Site Status NOT_YET_RECRUITING

Hôpital Européen Georges Pompidou

Paris, , France

Site Status NOT_YET_RECRUITING

Hôpital Saint-Louis

Paris, , France

Site Status NOT_YET_RECRUITING

CH PAU

Pau, , France

Site Status NOT_YET_RECRUITING

CH Perpignan

Perpignan, , France

Site Status NOT_YET_RECRUITING

Centre Hospitalier de Périgueux

Périgueux, , France

Site Status NOT_YET_RECRUITING

CHU Reims

Reims, , France

Site Status NOT_YET_RECRUITING

CH Saint-Lô

Saint-Lô, , France

Site Status NOT_YET_RECRUITING

CHRU Strasbourg Haute Pierre

Strasbourg, , France

Site Status NOT_YET_RECRUITING

CHU Strasbourg

Strasbourg, , France

Site Status NOT_YET_RECRUITING

Hopital Foch

Suresnes, , France

Site Status NOT_YET_RECRUITING

CH Tourcoing

Tourcoing, , France

Site Status NOT_YET_RECRUITING

CH Vannes

Vannes, , France

Site Status NOT_YET_RECRUITING

Hôpital Nord-Ouest de Villefranche sur Saone

Villefranche-sur-Saône, , France

Site Status NOT_YET_RECRUITING

CHU La Réunion

Saint-Denis, , Reunion

Site Status NOT_YET_RECRUITING

Countries

Review the countries where the study has at least one active or historical site.

France Reunion

Central Contacts

Reach out to these primary contacts for questions about participation or study logistics.

FRANCOIS BARBIER, Professor

Role: CONTACT

+33238229939

Facility Contacts

Find local site contact details for specific facilities participating in the trial.

Stéphanie MALAQUIN, Dr

Role: primary

Olivier PAJOT, Dr

Role: primary

Marc-Olivier VAREIL, Dr

Role: primary

Catherine CHIROUZE, Pr

Role: primary

Sophie NGUYEN, Dr

Role: primary

Khalil CHAIBI, Dr

Role: primary

Abdelhamid FATAH, Dr

Role: primary

Emmanuel FORESTIER, Dr

Role: primary

Juliette AUDIBERT, Dr

Role: primary

Claire DUPUIS, Pr

Role: primary

Rusel LEON, Dr

Role: primary

Keyvan RAZAZI, Pr

Role: primary

Christian CAILLARD, Dr

Role: primary

Siami SHIDASP, Dr

Role: primary

Aurélien DINH, Pr

Role: primary

Hugo PIROLLET, Dr

Role: primary

Asael BERGER, PhD

Role: primary

Thomas GUIMARD, Dr

Role: primary

Leila ESCAUT, Dr

Role: primary

Julien VAIDIE, Dr

Role: primary

Arnaud FRIGGERI, Pr

Role: primary

Laurent ARGAUD, Pr

Role: primary

Jean-Christophe RICHARD, Pr

Role: primary

Emmanuel VIVIER, Dr

Role: primary

Vincent LE MOING, Pr

Role: primary

Benjamin LEFEVRE, Dr

Role: primary

David BOUTOILLE, Pr

Role: primary

Alexandre ROBERT, Dr

Role: primary

Francois BARBIER, Professor

Role: primary

+33238229939

Jean-François TIMSIT, Pr

Role: primary

Antoine BOIS, Dr

Role: primary

Anne-Lise MUNIER, Dr

Role: primary

Charles-Edouard LUYT, Pr

Role: primary

Laure SURGERS, Dr

Role: primary

Damien BLEZ, Dr

Role: primary

Matthieu LAFAURIE, Dr

Role: primary

Mélanie LEHOUX, Dr

Role: primary

Hugues AUMAITRE, Dr

Role: primary

Mélanie SAINT-LEGER, Dr

Role: primary

Marin MOUTEL, Dr

Role: primary

Alexandre ALLAIRE, Dr

Role: primary

Vincent CASTELAIN, Professor

Role: primary

Ferhat MEZIANI, Dr

Role: primary

Marie-Alice COLOMBIER, Dr

Role: primary

Serge ALFANDARI, Dr

Role: primary

Florian REIZINE, Dr

Role: primary

Gary DAVID, Dr

Role: primary

Kévin DIALLO, Dr

Role: primary

References

Explore related publications, articles, or registry entries linked to this study.

Tamma PD, Aitken SL, Bonomo RA, Mathers AJ, van Duin D, Clancy CJ. Infectious Diseases Society of America 2022 Guidance on the Treatment of Extended-Spectrum beta-lactamase Producing Enterobacterales (ESBL-E), Carbapenem-Resistant Enterobacterales (CRE), and Pseudomonas aeruginosa with Difficult-to-Treat Resistance (DTR-P. aeruginosa). Clin Infect Dis. 2022 Aug 25;75(2):187-212. doi: 10.1093/cid/ciac268.

Reference Type BACKGROUND
PMID: 35439291 (View on PubMed)

Hu F, Guo Y, Yang Y, Zheng Y, Wu S, Jiang X, Zhu D, Wang F; China Antimicrobial Surveillance Network (CHINET) Study Group. Resistance reported from China antimicrobial surveillance network (CHINET) in 2018. Eur J Clin Microbiol Infect Dis. 2019 Dec;38(12):2275-2281. doi: 10.1007/s10096-019-03673-1. Epub 2019 Sep 2.

Reference Type BACKGROUND
PMID: 31478103 (View on PubMed)

Karlowsky JA, Lob SH, Kazmierczak KM, Young K, Motyl MR, Sahm DF. In-vitro activity of imipenem/relebactam and key beta-lactam agents against Gram-negative bacilli isolated from lower respiratory tract infection samples of intensive care unit patients - SMART Surveillance United States 2015-2017. Int J Antimicrob Agents. 2020 Jan;55(1):105841. doi: 10.1016/j.ijantimicag.2019.10.022. Epub 2019 Nov 6.

Reference Type BACKGROUND
PMID: 31704217 (View on PubMed)

Rosenthal VD, Bat-Erdene I, Gupta D, Belkebir S, Rajhans P, Zand F, Myatra SN, Afeef M, Tanzi VL, Muralidharan S, Gurskis V, Al-Abdely HM, El-Kholy A, AlKhawaja SAA, Sen S, Mehta Y, Rai V, Hung NV, Sayed AF, Guerrero-Toapanta FM, Elahi N, Morfin-Otero MDR, Somabutr S, De-Carvalho BM, Magdarao MS, Velinova VA, Quesada-Mora AM, Anguseva T, Ikram A, Aguilar-de-Moros D, Duszynska W, Mejia N, Horhat FG, Belskiy V, Mioljevic V, Di-Silvestre G, Furova K, Gamar-Elanbya MO, Gupta U, Abidi K, Raka L, Guo X, Luque-Torres MT, Jayatilleke K, Ben-Jaballah N, Gikas A, Sandoval-Castillo HR, Trotter A, Valderrama-Beltran SL, Leblebicioglu H; International Nosocomial Infection Control Consortium. International Nosocomial Infection Control Consortium (INICC) report, data summary of 45 countries for 2012-2017: Device-associated module. Am J Infect Control. 2020 Apr;48(4):423-432. doi: 10.1016/j.ajic.2019.08.023. Epub 2019 Oct 29.

Reference Type BACKGROUND
PMID: 31676155 (View on PubMed)

Sader HS, Streit JM, Carvalhaes CG, Huband MD, Shortridge D, Mendes RE, Castanheira M. Frequency of occurrence and antimicrobial susceptibility of bacteria isolated from respiratory samples of patients hospitalized with pneumonia in Western Europe, Eastern Europe and the USA: results from the SENTRY Antimicrobial Surveillance Program (2016-19). JAC Antimicrob Resist. 2021 Sep 2;3(3):dlab117. doi: 10.1093/jacamr/dlab117. eCollection 2021 Sep.

Reference Type BACKGROUND
PMID: 34671728 (View on PubMed)

Hu F, Yuan L, Yang Y, Xu Y, Huang Y, Hu Y, Ai X, Zhuo C, Su D, Shan B, Du Y, Yu Y, Lin J, Sun Z, Chen Z, Xu Y, Zhang X, Wang C, He L, Ni Y, Zhang Y, Lin D, Zhu D, Zhang Y. A multicenter investigation of 2,773 cases of bloodstream infections based on China antimicrobial surveillance network (CHINET). Front Cell Infect Microbiol. 2022 Dec 15;12:1075185. doi: 10.3389/fcimb.2022.1075185. eCollection 2022.

Reference Type BACKGROUND
PMID: 36590586 (View on PubMed)

Tabah A, Buetti N, Staiquly Q, Ruckly S, Akova M, Aslan AT, Leone M, Conway Morris A, Bassetti M, Arvaniti K, Lipman J, Ferrer R, Qiu H, Paiva JA, Povoa P, De Bus L, De Waele J, Zand F, Gurjar M, Alsisi A, Abidi K, Bracht H, Hayashi Y, Jeon K, Elhadi M, Barbier F, Timsit JF; EUROBACT-2 Study Group, ESICM, ESCMID ESGCIP and the OUTCOMEREA Network. Epidemiology and outcomes of hospital-acquired bloodstream infections in intensive care unit patients: the EUROBACT-2 international cohort study. Intensive Care Med. 2023 Feb;49(2):178-190. doi: 10.1007/s00134-022-06944-2. Epub 2023 Feb 10.

Reference Type BACKGROUND
PMID: 36764959 (View on PubMed)

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

2023-HORS RIPH-11

Identifier Type: -

Identifier Source: org_study_id

More Related Trials

Additional clinical trials that may be relevant based on similarity analysis.