> **Why this report cannot be completed here:** No citable contexts were retrievable in this run with the available literature tools (including `paper_search`; no usable evidence contexts were returned for grounding claims), so a properly PMID-cited report cannot be produced in this environment.
>
> The response below will therefore provide an **unsourced scaffold** for the requested disease entry plus a **reproducible retrieval plan** to gather authoritative sources (e.g., GeneReviews, OMIM, Orphanet, ClinVar, PubMed) in a follow-up run.


*Blockquote: This blockquote explains why a fully cited report could not be produced in the current run and clarifies that the fallback output should be an unsourced scaffold plus a retrieval workflow.*