> **Cited EDN3/EDNRB Waardenburg–Shah report not possible in this run**
>
> No citable source contexts were retrieved from literature, clinical-trial, or patent searches in this session, and OpenTargets queries failed after retries.
>
> Because no context IDs were created, a fully cited report with PMIDs, URLs, publication dates, direct quotes, and evidence-grounded disease claims cannot be produced in this run.
>
> Minimum inputs needed for a successful subsequent run:
> - Retrievable OMIM disease/gene entries
> - Retrievable Orphanet disease page(s)
> - A GeneReviews chapter or link
> - PubMed-indexed primary papers or PMIDs on EDN3/EDNRB-associated Waardenburg syndrome type IV / Waardenburg–Shah syndrome
> - DOI links or PDFs for key papers
> - Optional supporting sources: ClinVar variant records, gnomAD frequency pages, and MGI/IMPC model-organism records


*Blockquote: This blockquote documents that no citable contexts were available in the session, preventing a fully referenced EDN3/EDNRB Waardenburg–Shah report. It also lists the minimum retrievable source inputs needed for a successful follow-up run.*