Human Phenotype Ontology 
Grandparent Node:
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Phenotypic abnormality (HP:0000118)help
Parent Node:
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Abnormal myeloid leukocyte morphology (HP:0010974)help
Parent Node:
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Abnormality of connective tissue (HP:0003549)help
..Starting node
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Abnormal mast cell morphology (HP:0100494)help
Term ID: 100494
Name: Abnormal mast cell morphology
Synonym: Abnormality of mast cells; Abnormality of mastocytes
Definition: Any structural anomaly of mast cells, which are found in almost all tissues and contain numerous basophilic granules and are capable of releasing large amounts of histamine and heparin upon activation.
Comments:
Reference: HP:0100494
Genes and Diseases: SELECT DISTINCT 'HP:0100494' AS Input, t2.acc as HPO_ID, t2.name as HPO_term, g.Distance, t1.Entrez_gene AS Gene, t1.Entrez_gene_id AS Gene_id_entrez, t1.HGNC_ID, t1.DiseaseId, t1.DiseaseName, t1.Frequency, t1.Onset #, t1.ConceptID, Source, t1.Typical_association , h.Variants AS HGMD_variants, c.variants AS ClinVar_variants FROM hpo202212.graph_path AS g, hpo202212.term AS t, hpo202212.term AS t2 LEFT JOIN hpo202212.hpo_phenotype_to_genes as t1 ON (t1.HPO = t2.acc) LEFT JOIN gb_exome.clinvar_variation_latest_sum AS c ON ( c.Gene = t1.Entrez_Gene) LEFT JOIN gb_exome.hgmd_allmumt_sum_latest AS h ON (h.gene = t1.Entrez_Gene ) WHERE (t.acc ='HP:0100494' AND g.term1_id = t.id AND g.distance <=20 AND t2.id = g.term2_id) order by g.distance, gene, DiseaseName;