Multimodal neuroimmune diagnostic profiling for pediatric lower urinary tract dysfunction associated with occult sacral nerve abnormalities.

Authors

Dan Wang, Jun Pei, Hongyong Liao, Yimeng Liu, Yuangui Yang, Min Deng, Nini An

Published in

Frontiers in immunology. Volume 17. Pages 1947984. Epub Oct 06, 2026.

Abstract

Persistent pediatric lower urinary tract dysfunction (LUTD) may be associated with occult sacral neural impairment, a clinically challenging condition characterized by subtle sacral pathway dysfunction without overt spinal dysraphism.
To develop, internally validate, and externally validate a multimodal diagnostic model integrating ultrasound, urodynamics, neuroelectrophysiology, and urinary biomarkers.
The development dataset comprised 120 records (45 occult sacral neuropathy-related LUTD, 45 functional non-neurogenic LUTD, and 30 controls). The target-condition label followed a prespecified multidisciplinary composite reference standard based on clinical phenotype, neurological examination, spinal/pelvic MRI when available, conventional urodynamic interpretation, and longitudinal course; biomarker values and model probabilities were not components of that label. Preanalytical metadata included pre-catheterization collection, centrifugation at 3000 or 5000 x g for 10 minutes, 1.0- 1.5 mL aliquots, storage at -80 °C, limited freeze-thaw exposure, and creatinine normalization. We internally validated a six-predictor logistic model with 1,000 bootstrap repetitions. We assessed a separate 90-record, two-site dataset without refitting or threshold optimization.
The locked model had an apparent AUC of 0.937 and Brier score of 0.099; optimism-corrected values were 0.920 and 0.116, respectively. The bootstrap mean calibration intercept was -0.065, and the slope was 1.032. In the external transportability analysis, the AUC was 0.928 (95% CI, 0.861-0.977), the Brier score was 0.098, the calibration intercept was -0.400, the calibration slope was 0.887, sensitivity was 80.0%, and specificity was 88.3%.
Multimodal neuroimmune profiling demonstrated strong discrimination and acceptable calibration after optimism correction and external validation in an independent two-site cohort. Prospective multicenter validation is required before clinical implementation.

PMID:
42903153
Bibliographic data and abstract were imported from PubMed on 22 Oct 2026.

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