# Cardiac and vascular autonomic control in patients with hereditary angioedema.

- **DOI:** [10.3389/fphys.2025.1690915](https://doi.org/10.3389/fphys.2025.1690915)
- **Rating:** Sound (3.2 out of 5)
- **Verdict:** A useful autonomic study identifies an age-linked vascular signal in HAE-C1INH, but underpowered subgroup evidence limits confidence in the central conclusion.
- **Framework version:** v5.9
- **Pipeline version:** v0.4
- **Evaluation date:** 2026-09-18
- **Evaluation page:** https://www.nabu.science/paper/10.3389%2Ffphys.2025.1690915

## Key claims

1. Older HAE-C1INH patients display altered vascular autonomic regulation, with an exaggerated sympathetic response during orthostatic stress.
   - Support: Tentative
   - Type: Primary finding
   - Basis: small age strata and 57–70% vascular-outcome power make the age-specific signal hypothesis-generating
   - Location: Abstract, Conclusion
2. No significant group differences in cardiac autonomic control were observed during REST or TILT, regardless of age.
   - Support: Supported
   - Type: Secondary
   - Basis: standardized HUTT measurements were consistent across analyses, although enrollment fell below the planned sample
   - Location: Abstract; Results, Figures 2–3
3. The LTP might not modify the behavior of the cardiovascular neural control of HAE-C1INH patients.
   - Support: Tentative
   - Type: Secondary
   - Basis: only seven untreated patients prevented a direct treatment comparison and medication effects remain inseparable from disease effects
   - Location: Discussion, summary point iii
4. The selective vascular involvement becomes more pronounced with longer disease exposure.
   - Support: Tentative
   - Type: Secondary
   - Basis: cross-sectional age stratification does not identify disease-duration effects
   - Location: Conclusion

## Strengths

- **Contemporary cohort addresses androgen confounding** The study examines an androgen-free population and directly contrasts its treatment context with the attenuated-androgen exposure in the closest prior HUTT study.
  - Dimension: contribution
  - Location: Background, final paragraph; Discussion, paragraph 2
- **Standardized multimodal autonomic measurements** ECG, beat-to-beat blood pressure, and respiration were recorded under standardized REST and 70° TILT conditions, with explicit artifact correction and segment-selection rules.
  - Dimension: methodological rigour
  - Location: Experimental Protocol; Methods, Signals Pre-processing
- **Limitations linked to interpretation** The Discussion connects low power to replication needs, BMI imbalance to future control matching, and the age cutoff to the constraints of rare-disease sampling.
  - Dimension: positioning
  - Location: Discussion, limitations

## Limitations

- **Central subgroup result lacks precision** The analyzed sample fell below the planned target, and post-hoc power was 70% for σ²SBP and 57% for LFSBP. The older-group comparison further divides the cohort into approximately 12 participants per arm.
  - Dimension: methodological rigour
  - Location: Population; Results, Cardiovascular Neural Control During HUTT; Figure 3
- **Age is conflated with disease exposure** The Conclusion states that vascular involvement increases with longer disease exposure, but the reported analysis stratifies by age and does not analyze disease duration.
  - Dimension: reporting
  - Location: Methods, Statistical Analysis; Conclusion
- **No actionable clinical pathway established** The autonomic indices are not tied to attacks, prognosis, treatment response, diagnostic thresholds, or a current clinical decision. The paper consequently supports follow-up research rather than implementation.
  - Dimension: application pathway
  - Location: Aim; Discussion; Conclusion

## Reliability checks

Caveats (4 of 4 checks).

- **Internal coherence:** Noted. The reported results are numerically interpretable, but precision and claim alignment warrant caution. The central vascular finding relies on small age strata with 57–70% post-hoc power, while the Conclusion infers longer disease exposure from age rather than a reported duration analysis.
- **Research conduct:** Noted. Ethics approval, informed consent, trial registration, and an author-provided data-availability statement are declared. The data statement identifies no repository, and no conflict-of-interest statement is visible in the supplied text.
- **Reference integrity:** Clean. 38 of 38 checkable references verified
  - 38 references in manuscript
  - References not verified automatically are resolved manually within 24 hours.

## Post-publication record

- **Status:** Clean
- **Summary:** No retraction or expression of concern found in Crossref (includes Retraction Watch).
- **Last checked:** 2026-10-17