> **Research report could not be generated (no retrievable sources)**
>
> Literature, clinical-trial, and patent retrieval in this run produced no retrievable documents and therefore no citable context IDs; OpenTargets queries also failed after retries.
>
> Because this system requires retrievable source contexts to support PMIDs, URLs, publication dates, abstract quotes, and other evidence-grounded claims, it cannot produce the requested well-cited EDN3/EDNRB Waardenburg–Shah report in this run.
>
> Minimum inputs needed for a successful follow-up run: at least one retrievable authoritative disease source (for example, OMIM, Orphanet, or GeneReviews) plus PubMed-indexed primary papers or PDFs/DOIs on EDN3/EDNRB-associated Waardenburg syndrome type IV; optional supporting inputs include ClinVar variant records, gnomAD frequency pages, and MGI/IMPC model-organism records.


*Blockquote: This blockquote summarizes why a fully cited EDN3/EDNRB Waardenburg–Shah report could not be produced in the current run. It also lists the minimum source inputs needed to enable a complete evidence-grounded report in a follow-up run.*