Human Phenotype Ontology 
Grandparent Node:
Abnormal eye physiology (HP:0012373)help
Parent Node:
Abnormal autonomic nervous system physiology (HP:0012332)help
Parent Node:
Miosis (HP:0000616)help
Parent Node:
Ptosis (HP:0000508)help
..Starting node
Horner syndrome (HP:0002277)help
Term ID: 2277
Name: Horner syndrome
Synonym: Horner's syndrome; Oculosympathetic palsy
Definition: An abnormality resulting from a lesion of the sympathetic nervous system characterized by a combination of unilateral ptosis, miosis, and often ipsilateral hypohidrosis and conjunctival injection.
Reference: HP:0002277
Genes and Diseases:
       Child Nodes:
........expandCongenital Horner syndrome (HP:0006837) help

 Sister Nodes: 
..expandBilateral ptosis (HP:0001488) help
..expandCongenital ptosis (HP:0007970) help
..expandProgressive ptosis (HP:0007838) help
..expandUnilateral ptosis (HP:0007687) help
InputHPO IDHPO termDistanceGeneGene id entrezDiseaseIdDiseaseNameDiseaseMIMConceptIDSourceTypical associationHGMD variantsClinVar variantsHGNC IDGeneMIM
HPO disease - gene - phenotype typical associations:
HP:0002277HP:0002277Horner syndrome0NME1 CL E G H4830256700Neuroblastoma256700C0027819OMIM1147849156490
HP:0002277HP:0006837Congenital Horner syndrome1NME1 CL E G H4830256700Neuroblastoma256700C0027819OMIM1147849156490
HPO disease - gene - phenotype less frequent non-typical associations:

Genes (1) :NME1

Diseases (1) :256700

Human Phenotype Ontology(HPO) is developed by the Human Phenotype Ontology Consortium. The version used here is August 2021 release.