Trait
Pica
An appetite for and the persistent ingestion of non-food substances such as clay. In order to diagnose pica, this behavior must have persisted over a period of at least one month.
Summary
- Body system
- Abnormality of the nervous system
Reference genomeGRCh38hg38
Positions on gene and variant pages follow this choice, in this browser.
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Get my Genome Test9 genes linked to Pica
Changes in these genes cause rare conditions in which Pica is seen. Most people with this trait have none of those conditions, and a gene on this list says nothing about anyone's own genome.
| Gene | How often it is seen | Conditions |
|---|---|---|
| ASH1LASH1 like histone lysine methyltransferase | Always | In 1 condition |
| CHD8chromodomain helicase DNA binding protein 8 | Always | In 1 condition |
| ELP2elongator acetyltransferase complex subunit 2 | Always | In 1 condition |
| TAF4TATA-box binding protein associated factor 4 | Always | In 1 condition |
| CDK13cyclin dependent kinase 13 | Sometimes (5–29%) | In 1 condition |
| DHPSdeoxyhypusine synthase | Sometimes (5–29%) | In 1 condition |
| PGM2L1phosphoglucomutase 2 like 1 | Sometimes (5–29%) | In 1 condition |
| ZSWIM6zinc finger SWIM-type containing 6 | Sometimes (5–29%) | In 1 condition |
| RNU4-2RNA, U4 small nuclear 2 | Rarely (1–4%) | In 1 condition |
How often is among people with one of the gene's conditions, the most often across them, as the Human Phenotype Ontology records it. These pages describe traits and the research behind them; they are not a diagnosis, and a doctor or genetic counsellor is the person to ask about symptoms.
Broader traits
Where this comes from
- The Human Phenotype Ontology, release 2026-09-01: the trait, its names, its definition and the genes linked to it. Find out more at hpo.jax.org.
- Data release 2026.10.16-c6eea6bf.
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