Ontology Regex Update

[lindaxiang]

Ontology	Current regex	Proposed regex	Note
CCI	^CCI:[A-Z0-9]([0-9]{2}|[A-Z]{2}){3}(([0-9]{2}|[A-Z]{2})[A-Z0-9]?)?$		✅ No change needed.
ECTO (Environmental conditions, treatments and exposures ontology)		^ECTO:\d{7}$	➕ New addition.
ExO (Exposure ontology)	^ExO:\d{7}$		✅ No change needed.
Genome annotation build/version	^(?:Ensembl \d{1,5}|RefSeq \d{1,5}|Gencode v\d{1,5})$		✅ No change needed.
HPO	^HP:[0-9]{7}$		✅ No change needed.
ICD-10	^icd10:(([XVI]+)|([A-Z][0-9]+((-[A-Z][0-9]+)|(\.[0-9]))?))$		✅ No change needed. This is WHO ICD-10 specifically, not ICD-10-CM/CA.
ICD-O-3 (topography)	^ICDO3:[C][0-9]{2}(.[0-9]{1})?$	^ICDO3:C[0-9]{2}(\.[0-9])?$	❌ Fix required. Unescaped . matches any character, not a literal dot.
KEGG (drug)	^kegg\.drug:D\d+$		✅ No change needed.
LOINC	^LOINC:(\d|\w)+-\d$		✅ No change needed.
LOINC	^LOINC:[0-9]{1,5}-[0-9]$	^LOINC:(\d|\w)+-\d$	❌ Fix required. Too strict (rejects real 6-digit codes).
MONDO	^MONDO:\d{7}$		✅ No change needed.
NCIt	^NCIT:C\d+$	^NCIT:[CRPA]\d+$	❌ Fix required. NCIt codes can start with C, R, P, or A, not just C.
OBI	^OBI:\d{7}$		✅ No change needed.
Orphanet		^ORPHA:C?\d+$	➕ New addition.
PubChem (compound)	^pubchem\.compound:\d+$		✅ No change needed.
RxNorm	^rxnorm:\d{1,8}$		✅ No change needed.
SNOMED-CT	^snomedct:(\w+)?\d+$		✅ No change needed.
SO	^SO:\d{7}$		✅ No change needed.
UBERON	^UBERON:\d{7,}$		✅ No change needed.
UCUM		⚠️ (no single regex exists)	❓ Its identifiers are free-form algebraic unit expressions (e.g. mmol.mL-1, /A/s3/cg3/T3, Cel.d-1, %), not a fixed-shape code. A simple regex can't validate UCUM; real validation needs a UCUM grammar parser, not pattern matching.
UMLS	^umls:C\d+$		✅ No change needed.
UO	^UO:\d{7}$		✅ No change needed.

[edsu7]

PR addressing:
#68