In the past, lack of a consistent framework has prevented the analysis of heterogenous clinical data in conjunction with genetic etiologies. This study synthesizes genetic findings with clinical features on a large scale, using the Human Phenotype Ontology (HPO) in order to assess clinical features and phenotypic relatedness for individuals with de novo variants in the same gene. This demonstrates that phenotype data, when made uniform, can provide statistical evidence in gene-disease relationships and reveal patterns from sparse clinical data.