Trait
Monotonic speech
A speech pattern characterized by a persistently abnormal lack of tone in the voice. Monotonic speech is typically ongoing, lasting throughout the day, but may have a diurnal variation in the pattern, i.e. slower at specific times of the day.
Summary
- Also called
- Flat speech
- Body system
- Abnormality of the nervous system
Reference genomeGRCh38hg38
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Get my Genome Test9 genes linked to Monotonic speech
Changes in these genes cause rare conditions in which Monotonic speech 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 |
|---|---|---|
| CWF19L1CWF19 like cell cycle control factor 1 | Often (30–79%) | In 1 condition |
| FBXO7F-box protein 7 | Often (30–79%) | In 2 conditions |
| SNCAsynuclein alpha | Often (30–79%) | In 2 conditions |
| DNAJC13DnaJ heat shock protein family (Hsp40) member C13 | Sometimes (5–29%) | In 1 condition |
| EIF4G1eukaryotic translation initiation factor 4 gamma 1 | Sometimes (5–29%) | In 1 condition |
| GBA1glucosylceramidase beta 1 | Sometimes (5–29%) | In 1 condition |
| GIGYF2GRB10 interacting GYF protein 2 | Sometimes (5–29%) | In 1 condition |
| LRRK2leucine rich repeat kinase 2 | Sometimes (5–29%) | In 1 condition |
| VPS35VPS35 retromer complex component | Sometimes (5–29%) | 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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