## Note on missing URN IDs in `MaveDB_variants_plus90.tsv.gz`

1147 URN IDs were passed to the pipeline. 
1108 URN IDs persisted to the output file. 
The following sections provide URN IDs and accompanying reasons for being excluded.

### Variants skipped for `special` classification
`map_scores_hgvs_g` recorded that every variant was marked `special` (special HGVS values (e.g. synonymous or wild-type) or missing scores), so no
rows were mapped or emitted:

- urn:mavedb:00001214-a-2 (193 special)
- urn:mavedb:00001214-b-2 (168 special)
- urn:mavedb:00001214-c-2 (155 special)
- urn:mavedb:00001214-d-1 (161 special)
- urn:mavedb:00001214-e-1 (162 special)
- urn:mavedb:00001214-f-1 (160 special)
- urn:mavedb:00001214-g-2 (156 special)
- urn:mavedb:00001214-h-2 (157 special)
- urn:mavedb:00001214-i-2 (165 special)
- urn:mavedb:00001214-j-2 (157 special)
- urn:mavedb:00001214-k-1 (165 special)
- urn:mavedb:00001214-l-1 (156 special)
- urn:mavedb:00001214-m-2 (154 special)
- urn:mavedb:00001214-n-2 (155 special)
- urn:mavedb:00001214-o-2 (151 special)
- urn:mavedb:00001214-p-2 (158 special)

### Metadata not found (extractor wrote empty metadata/licence)
`extract_metadata` could not locate the metadata JSON for these, so mapping
never ran:

- urn:mavedb:00000657-a-2
- urn:mavedb:00001220-a-1
- urn:mavedb:00001220-a-2
- urn:mavedb:00001220-a-3
- urn:mavedb:00001220-a-4
- urn:mavedb:00001220-a-5
- urn:mavedb:00001220-a-6
- urn:mavedb:00001220-a-7
- urn:mavedb:00001220-a-8
- urn:mavedb:00001220-a-10
- urn:mavedb:00001220-a-11
- urn:mavedb:00001220-a-12
- urn:mavedb:00001238-a-1
- urn:mavedb:00001243-a-1
- urn:mavedb:00001244-a-1
- urn:mavedb:00001244-b-1
- urn:mavedb:00001246-a-1
- urn:mavedb:00001247-a-1
- urn:mavedb:00001249-a-1
- urn:mavedb:00001249-a-2
- urn:mavedb:00001249-a-3
- urn:mavedb:00001249-a-4

### Variant recoder could not parse HGVS
- urn:mavedb:00000113-a-2 — Variant Recoder processed 763 HGVS lines but
  reported only `unable_to_parse`, exiting with rc=1 and producing an empty
  mapped output (see e.g. `work/69/112f5e9ae68125f51ed9e8ab6cee6f/.command.log`).