diff --git a/src/ontology/maxo-edit.owl b/src/ontology/maxo-edit.owl
index 398e6a14..d6832ecc 100644
--- a/src/ontology/maxo-edit.owl
+++ b/src/ontology/maxo-edit.owl
@@ -1000,6 +1000,7 @@ Declaration(Class(<http://purl.obolibrary.org/obo/MAXO_0001614>))
 Declaration(Class(<http://purl.obolibrary.org/obo/MAXO_0001615>))
 Declaration(Class(<http://purl.obolibrary.org/obo/MAXO_0001616>))
 Declaration(Class(<http://purl.obolibrary.org/obo/MAXO_0001620>))
+Declaration(Class(<http://purl.obolibrary.org/obo/MAXO_0001621>))
 Declaration(Class(<http://purl.obolibrary.org/obo/MAXO_0009003>))
 Declaration(Class(<http://purl.obolibrary.org/obo/MAXO_0009004>))
 Declaration(Class(<http://purl.obolibrary.org/obo/MAXO_0009005>))
@@ -11566,6 +11567,18 @@ AnnotationAssertion(dce:date <http://purl.obolibrary.org/obo/MAXO_0001620> "2024
 AnnotationAssertion(rdfs:label <http://purl.obolibrary.org/obo/MAXO_0001620> "cell-free DNA screening")
 SubClassOf(<http://purl.obolibrary.org/obo/MAXO_0001620> <http://purl.obolibrary.org/obo/MAXO_0000529>)
 
+# Class: <http://purl.obolibrary.org/obo/MAXO_0001621> (reproductive technology treatment)
+
+AnnotationAssertion(<http://purl.obolibrary.org/obo/IAO_0000115> <http://purl.obolibrary.org/obo/MAXO_0001621> "Procedures and treatments that are used to aid in achieving pregnancy conception in individuals who are having difficulty doing so spontaneously.")
+AnnotationAssertion(dce:creator <http://purl.obolibrary.org/obo/MAXO_0001621> <https://orcid.org/0000-0001-7941-2961>)
+AnnotationAssertion(dce:date <http://purl.obolibrary.org/obo/MAXO_0001621> "2024-07-25T18:14:41Z"^^xsd:dateTime)
+AnnotationAssertion(<http://www.geneontology.org/formats/oboInOwl#hasBroadSynonym> <http://purl.obolibrary.org/obo/MAXO_0001621> "fertility treatment")
+AnnotationAssertion(<http://www.geneontology.org/formats/oboInOwl#hasExactSynonym> <http://purl.obolibrary.org/obo/MAXO_0001621> "ART treatment")
+AnnotationAssertion(<http://www.geneontology.org/formats/oboInOwl#hasExactSynonym> <http://purl.obolibrary.org/obo/MAXO_0001621> "assisted reproductive technology procedure")
+AnnotationAssertion(<http://www.geneontology.org/formats/oboInOwl#hasExactSynonym> <http://purl.obolibrary.org/obo/MAXO_0001621> "reproductive technology procedure")
+AnnotationAssertion(rdfs:label <http://purl.obolibrary.org/obo/MAXO_0001621> "reproductive technology treatment")
+SubClassOf(<http://purl.obolibrary.org/obo/MAXO_0001621> <http://purl.obolibrary.org/obo/MAXO_0000002>)
+
 # Class: <http://purl.obolibrary.org/obo/MAXO_0009003> (preimplantation genetic testing)
 
 AnnotationAssertion(Annotation(<http://www.geneontology.org/formats/oboInOwl#hasDbXref> "NCBIBook:NBK5191") <http://purl.obolibrary.org/obo/IAO_0000115> <http://purl.obolibrary.org/obo/MAXO_0009003> "Genetic testing of one or more cells removed from early embryos conceived by in vitro fertilization and transferring to the mother's uterus only those embryos determined not to have the pathogenic variant(s)/chromosome anomaly(ies) of concern.")