SELECT DISTINCT SUBSTR(STR(?umlsID),6) AS ?umls
WHERE {
    ?gda sio:SIO_000628 ?umls .
    ?umls dcterms:identifier ?umlsID ;
        skos:exactMatch ?doid .
    ?doid rdfs:label ?doTerm ;
        rdfs:subClassOf+ <http://purl.obolibrary.org/obo/DOID_7> .
    FILTER REGEX(?umls, "umls/id")
}

ORDER BY ?umlsID