diff --git a/src/sparql/qc/mondo/qc-gene-identifier-mismatch.sparql b/src/sparql/qc/mondo/qc-gene-identifier-mismatch.sparql
new file mode 100644
index 0000000000..6fa7433526
--- /dev/null
+++ b/src/sparql/qc/mondo/qc-gene-identifier-mismatch.sparql
@@ -0,0 +1,35 @@
+PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
+PREFIX owl: <http://www.w3.org/2002/07/owl#>
+PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
+PREFIX obo: <http://purl.obolibrary.org/obo/>
+
+# Find classes with mismatched gene identifiers added as equivalentTo and subClassOf
+
+SELECT DISTINCT ?entity ?label ?equivGeneIdentifier ?subClassGeneIdentifier
+WHERE {
+  ?entity rdf:type owl:Class ;
+          rdfs:label ?label .
+  
+  # Equivalent class restriction
+  ?entity owl:equivalentClass ?equivClass .
+  ?equivClass owl:intersectionOf/rdf:rest*/rdf:first ?equivComponent .
+  
+  ?equivComponent rdf:type owl:Restriction ;
+                  owl:onProperty obo:RO_0004003 ;
+                  owl:someValuesFrom ?equivGeneIdentifier .
+  
+  # subClassOf restriction
+  ?entity rdfs:subClassOf ?subClassRestriction .
+  ?subClassRestriction rdf:type owl:Restriction ;
+                       owl:onProperty obo:RO_0004003 ;
+                       owl:someValuesFrom ?subClassGeneIdentifier .
+
+  # Filter for gene identifiers with HGNC or NCBIGene prefixes
+  FILTER(STRSTARTS(STR(?equivGeneIdentifier), "http://identifiers.org/hgnc/") || 
+         STRSTARTS(STR(?equivGeneIdentifier), "http://identifiers.org/ncbigene/"))
+  FILTER(STRSTARTS(STR(?subClassGeneIdentifier), "http://identifiers.org/hgnc/") || 
+         STRSTARTS(STR(?subClassGeneIdentifier), "http://identifiers.org/ncbigene/"))
+
+  # Filter for cases where the gene identifiers do not match
+  FILTER(?equivGeneIdentifier != ?subClassGeneIdentifier)
+}
diff --git a/src/sparql/qc/mondo/qc-multiple-gene-associations.sparql b/src/sparql/qc/mondo/qc-multiple-gene-associations.sparql
new file mode 100644
index 0000000000..1fa354d310
--- /dev/null
+++ b/src/sparql/qc/mondo/qc-multiple-gene-associations.sparql
@@ -0,0 +1,34 @@
+PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
+PREFIX owl: <http://www.w3.org/2002/07/owl#>
+PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
+PREFIX obo: <http://purl.obolibrary.org/obo/>
+PREFIX oboInOwl: <http://www.geneontology.org/formats/oboInOwl#>
+
+# Get classes that have more than 1 gene association (either subClassOf or equivalentClass) with RO:0004003 property
+
+SELECT DISTINCT ?entity ?label (GROUP_CONCAT(DISTINCT ?geneIdentifier; separator=", ") AS ?geneIdentifiers)
+WHERE {
+  {
+    # subClassOf association
+    ?entity rdfs:subClassOf ?restriction ;
+            rdfs:label ?label .
+    
+    ?restriction rdf:type owl:Restriction ;
+                 owl:onProperty obo:RO_0004003 ;
+                 owl:someValuesFrom ?geneIdentifier .
+  }
+  UNION
+  {
+    # equivalentClass association
+    ?entity owl:equivalentClass ?equivClass ;
+            rdfs:label ?label .
+    
+    ?equivClass owl:intersectionOf/rdf:rest*/rdf:first ?component .
+    
+    ?component rdf:type owl:Restriction ;
+               owl:onProperty obo:RO_0004003 ;
+               owl:someValuesFrom ?geneIdentifier .
+  }
+}
+GROUP BY ?entity ?label
+HAVING (COUNT(DISTINCT ?geneIdentifier) > 1)