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Related Experiment Video

Updated: Feb 13, 2026

Author Spotlight: Development and Evaluation of a Compound Acne Rodent Model Using C. acnes and Oleic Acid
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Cutibacterium acnes molecular typing: time to standardize the method.

M-A Dagnelie1, A Khammari1, B Dréno1

  • 1Dermatology Department, CHU Nantes, CIC 1413, CRCINA, University Nantes, Nantes, France.

Clinical Microbiology and Infection : the Official Publication of the European Society of Clinical Microbiology and Infectious Diseases
|March 17, 2018
PubMed
Summary

Standardizing molecular typing methods for Cutibacterium acnes (C. acnes) is crucial. This review proposes a consensus algorithm using multiplex PCR, MLST, and SLST to improve C. acnes subtyping and clinical data comparison.

Keywords:
AcneBone and joint infectionCutibacterium acnesMLSTMolecular typing methodPhylotypeProstateSLSTSarcoidosis

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Area of Science:

  • Microbiology
  • Bacteriology
  • Genetics

Background:

  • Cutibacterium acnes (C. acnes) is a skin commensal with six main phylotypes (IA1, IA2, IB, IC, II, III).
  • Molecular typing methods like phylotyping, clonal complexes, and single-locus sequence typing (SLST) are used to identify C. acnes subgroups.
  • Discrepancies in current typing methods hinder comparative analysis of C. acnes research.

Purpose of the Study:

  • To propose a standardized molecular typing method for C. acnes.
  • To provide a consensus algorithm for C. acnes subtyping based on desired resolution (phylotype, clonal complex, SLST).
  • To facilitate consistent comparison of C. acnes research findings.

Main Methods:

  • Critical review of existing C. acnes molecular typing techniques, evaluating advantages and disadvantages.
  • Proposal of a consensus algorithm for C. acnes molecular typing.
  • Recommended use of multiplex PCR for phylotype identification, MLST for clonal complex determination, and SLST for high-resolution phylogeny.

Main Results:

  • Identification of frequently used C. acnes typing methods.
  • Development of a tiered approach for molecular typing based on phylogenetic resolution needs.
  • Specific method recommendations: multiplex PCR (phylotypes), MLST (clonal complexes), SLST (numerous isolates).

Conclusions:

  • A consensus on C. acnes molecular typing methods is urgently needed.
  • Standardization will enable better comparison of research results across studies.
  • Standardized typing will improve the interpretation of clinical data related to C. acnes infections.