Human Phenotype Ontology 
Grandparent Node:
Epidermal thickening (HP:0011368)help
Parent Node:
Hyperkeratosis (HP:0000962)help
Parent Node:
Parakeratosis (HP:0001036)help
..Starting node
Hyperparakeratosis (HP:0040009)help
Term ID: 40009
Name: Hyperparakeratosis
Definition: Abnormal keratinization of the epidermal stratum coreum (horny layer) with increased keratin formation, preservation of the nuclei in the superficial cells, and absence of the stratum granulosum.
Reference: HP:0040009
Genes and Diseases:
       Child Nodes:

 Sister Nodes: 
InputHPO IDHPO termDistanceGeneGene id entrezHGNC IDDiseaseIdDiseaseNameFrequencyOnsetHGMD variantsClinVar variants
HPO disease - gene - phenotype typical associations:
HPO disease - gene - phenotype less frequent non-typical associations:
HP:0040009HP:0040009Hyperparakeratosis0KRT13 CL E G H38606415OMIM:615785White sponge nevus 2.46
HP:0040009HP:0040009Hyperparakeratosis0PIK3CA CL E G H52908975ORPHA:276280Hemihyperplasia-multiple lipomatosis syndromeHP:0040283 - Occasional162

Genes (2) :KRT13 PIK3CA

Diseases (2) :OMIM:615785 ORPHA:276280

Human Phenotype Ontology(HPO) is developed by the Human Phenotype Ontology Consortium. The version used here is December 15 2022 release.