> No citable source contexts were retrieved in this session, so a PMID-cited report on EDN3/EDNRB Waardenburg–Shah syndrome cannot be generated or submitted.
>
> Artifacts provided instead: a retrieval audit, report scaffolds, a reproducible query list, and a minimum source set needed for a fully cited run.
>
> Exact remediation steps: ingest or provide retrievable OMIM and Orphanet disease pages, a GeneReviews chapter, PubMed-indexed primary papers or PDFs/DOIs on EDN3/EDNRB-associated Waardenburg syndrome type IV, ClinVar records, gnomAD pages, and MGI/IMPC model-organism entries; then rerun retrieval so citable context IDs can be created.


*Blockquote: This blockquote summarizes the outcome of the session: no citable evidence contexts were available, so a source-grounded report could not be produced. It also lists the substitute artifacts generated and the concrete inputs needed to enable a fully cited follow-up run.*