Give me all disease-disease associations related to a gene according to the disease name introduced

Database: 
Statement: 
Give me all disease-disease associations related to a gene according to the disease name introduced$name$ (e.g. Osteosarcoma)
A limit of results per page $number$ (e.g. 10)
Query: 
SELECT DISTINCT ?diseaseName ?diseaseName2 ?geneName FROM <http://rdf.disgenet.org> WHERE { ?gda <http://semanticscience.org/resource/SIO_000628> ?disease, ?gene . ?gda2 <http://semanticscience.org/resource/SIO_000628> ?disease2, ?gene . FILTER (?gda != ?gda2) FILTER (?disease != ?disease2) FILTER regex(?disease, "umls/id") FILTER regex(?disease2, "umls/id") ?disease<http://purl.org/dc/terms/title>?diseaseName . ?disease2<http://purl.org/dc/terms/title>?diseaseName2 . ?gene<http://purl.org/dc/terms/title>?geneName . FILTER regex(?diseaseName , "??name", "i") } LIMIT ??number