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Zimmermann-Laband Syndrome

Zimmermann-Laband Syndrome Deep-Research Fallback

⚠️ Fallback MONDO:0000200

Zimmermann-Laband Syndrome Deep-Research Fallback

An automated deep-research provider was attempted after the initial cache-backed YAML existed, but it stayed silent and was stopped by the bounded timeout:

  • timeout 120s just research-disorder openai Zimmermann_Laband_Syndrome returned 124.

The curation therefore used generated local caches plus direct PubMed searches and fetched PubMed/Orphanet records. The reviewed disease scope is Zimmermann-Laband syndrome as represented by ORPHA:3473 and MONDO:0000200, including the molecularly solved KCNH1, KCNN3, and ATP6V1B2 genetic heterogeneity.

Scope Confirmation

  • ORPHA:3473 supplied the definition, neonatal onset, cross-references, gene-disease rows, epidemiology, and all HPO phenotype rows.
  • PMID:23994350 supplied the clinical literature review, developmental-delay and epilepsy frequencies, and inheritance interpretation.
  • PMID:25915598 supplied the KCNH1 gain-of-function mechanism, ATP6V1B2 recurrent de novo variation, and the core clinical feature summary.
  • PMID:31155282 supplied KCNN3 de novo variants and patch-clamp gain-of-function evidence.
  • PMID:33594261 supplied the broader syndromic neurodevelopmental potassium channelopathy framing for KCNH1/KCNN3-related disease.
  • PMID:35639255 supplied KCNH1 ciliary localization and ciliogenesis/Sonic Hedgehog signaling perturbation evidence.
  • PMID:39087232 and PMID:40604848 supplied oral-management evidence for gingival fibromatosis, delayed tooth eruption, gingivectomy, gingivoplasty, and supportive myofunctional/speech-language oral therapy.

Coverage Notes

The YAML intentionally models the most evidence-backed mechanisms as a compact pathograph: increased K+ conductance, ATP6V1B2 V-ATPase complex perturbation, KCNH1-related ciliary signaling disruption, neurodevelopmental dysfunction, gingival/dental overgrowth, and distal digital/nail developmental abnormality. Temple-Baraitser syndrome and KCNK4-related FHEIG overlap clinically, but they are kept as differential/overlap notes rather than merged into the ZLS disease entry.