← Reviews
Jul 20, 2026

Dupilumab and skin microbiome shifts in Netherton syndrome: case report and literature review

In a single patient with Netherton syndrome, dupilumab was associated with increased cutaneous microbial diversity over one year.

Evidence levelDNarrative / animal / in vitro / mechanistic
Study typeother
Sample1
Effect directionMechanistic only
CertaintyVery low
Clinical applicabilityVery low
Overinterpretation risk1/5 · Low
PICO
Population
Intervention
Comparator
Outcome

What the study showed

Baseline microbiome showed low diversity dominated by Pantoea and Pseudomonas. After one year of dupilumab, diversity increased with Staphylococcus predominance and a rise in Malassezia. Clinical remission was observed in parallel with these shifts.

How it was done

Single case report: skin swabs from lesional sites collected at three time points (baseline, 1 month, 1 year) in a 35-year-old woman with NS on continuous dupilumab therapy.

Risk of bias

N=1 precludes generalization; no control group, no matched healthy comparator, and sequencing methodology is not detailed in the abstract. Causality cannot be inferred.

Interpretation limit

What this study does NOT prove

Does not prove that dupilumab restores the skin microbiome in Netherton syndrome or that microbiome changes mediated the clinical benefit.

In clinical practice

Data do not support clinical practice changes. This is a descriptive observation in an isolated patient with a rare disease.

Limitations

N=1 precludes generalization; no control group, no matched healthy comparator, and sequencing methodology is not detailed in the abstract. Causality cannot be inferred.

Technical appendix

Version history

  • 1.0 · 2026-07-20 — Auto-generated under Evidence Standard v1.0

Paid access: structured summary from public metadata; consult the original study at the source.

Microbiota Weekly

The week in microbiota evidence, in your language. Structured summaries, traceable to the source.