> **Non-citable run outcome**
>
> No retrievable papers or citable context IDs were returned in this run, so PMIDs, abstract quotes, URLs, publication dates, and disease-specific claims for **EDN3/EDNRB Waardenburg–Shah syndrome** cannot be verified.
>
> To enable a fully cited report, please supply:
> - PubMed IDs for key EDN3/EDNRB Waardenburg–Shah papers
> - DOI links or PDFs of primary papers and recent reviews
> - OMIM disease and gene entries
> - Orphanet disease page(s)
> - A GeneReviews chapter or stable link
> - Optional supporting sources: ClinVar variant records, gnomAD frequency pages, and MGI/IMPC model-organism records


*Blockquote: This blockquote documents that no retrievable source contexts were available in the session, preventing a PMID-cited report. It also lists the minimum source inputs needed to enable a fully referenced follow-up report.*