Analysis of Clinical Subphenotypes in Methicillin-Resistant Staphylococcus aureus Bacteremia: A Post Hoc Analysis of the MRSA-GEIRAS-SEIMC Study - Summary - MDSpire

Analysis of Clinical Subphenotypes in Methicillin-Resistant Staphylococcus aureus Bacteremia: A Post Hoc Analysis of the MRSA-GEIRAS-SEIMC Study

  • By

  • Sofía De La Villa

  • Nuria Fernández-Hidalgo

  • Francesc Escrihuela-Vidal

  • Rosa Escudero-Sánchez

  • Itxasne Cabezón

  • Lucía Boix-Palop

  • Beatriz Díaz-Pollán

  • Ane Josune Goikoetxea

  • María José García-País

  • Lucía Ramos-Merino

  • María Teresa Pérez-Rodríguez

  • Ángela Crespo

  • Lara del Río

  • José María Bellón-Cano

  • Patricia Muñoz

  • on behalf of

  • MRSA-GEIRAS-SEIMC study group

  • Damaris Berbel

  • Luis Buzón-Martín

  • David Campany

  • Alex García-Tellado

  • Inmaculada Grau

  • José Manuel Guerra-Laso

  • Joan Roig-Sanchis

  • Celia Sánchez-Martínez

  • Oscar Sanz

  • Fiorana Silvante

  • Belén Viñado

  • Luciana Urbina

  • Ana V Halperin

  • Mariona Xercavins

  • December 16, 2025

  • 0 min

Share

Objective:

To identify and evaluate clinical subphenotypes in patients with methicillin-resistant Staphylococcus aureus bacteremia (MRSAB) and assess their association with all-cause 90-day mortality, highlighting the importance of these subphenotypes in guiding treatment strategies.

Key Findings:
  • Four distinct clinical subphenotypes identified: S1 (younger, community-acquired), S2 (older, high comorbidity, healthcare-related), S3 (catheter source, nosocomial), S4 (heart valve prostheses, metastatic foci).
  • 90-day mortality rates: S1 - 20.0% (95% CI: X-Y), S2 - 47.4% (95% CI: X-Y), S3 - 26.2% (95% CI: X-Y), S4 - 35.1% (95% CI: X-Y) (P < .01).
  • Increased mortality risk in S2 (HR 2.98) and S4 (HR 1.99) compared to S1.
Interpretation:

Identifying clinical subphenotypes in MRSAB can help predict mortality risk and guide treatment strategies, potentially improving patient outcomes.

Limitations:
  • Retrospective design may introduce bias and affect data reliability.
  • Exclusion of patients with missing data could affect generalizability.
Conclusion:

Four clinical subphenotypes of MRSAB were associated with different prognostic outcomes, warranting further investigation for clinical application.

Original Source(s)

Analysis of Clinical Subphenotypes in Methicillin-Resistant Staphylococcus aureus Bacteremia: A Post Hoc Analysis of the MRSA-GEIRAS-SEIMC Study

  • by Sofía De La Villa, Nuria Fernández-Hidalgo, Francesc Escrihuela-Vidal, Rosa Escudero-Sánchez, Itxasne Cabezón, Lucía Boix-Palop, Beatriz Díaz-Pollán, Ane Josune Goikoetxea, María José García-País, Lucía Ramos-Merino, María Teresa Pérez-Rodríguez, Ángela Crespo, Lara del Río, José María Bellón-Cano, Patricia Muñoz, on behalf of, MRSA-GEIRAS-SEIMC study group, Damaris Berbel, Luis Buzón-Martín, David Campany, Alex García-Tellado, Inmaculada Grau, José Manuel Guerra-Laso, Joan Roig-Sanchis, Celia Sánchez-Martínez, Oscar Sanz, Fiorana Silvante, Belén Viñado, Luciana Urbina, Ana V Halperin, Mariona Xercavins

  • December 16, 2025

Related Content

When Obesity Meets Infection Risk

Researchers analyze data from Finnish cohorts and the UK Biobank to examine how body mass index relates to severe infections and their global burden.

Clinical Features, Microbial Profiles, and Antimicrobial Resistance in Neonates with Bloodstream Infections Due to ESKAPEEc Pathogens in Southwest China

Bone and Joint Infections in Tropical Settings: High Prevalence of Gram-Negative Bacilli and Implications for Empirical Therapy