Trait
Triangular head shape
Clinical name: Trigonocephaly
Wedge-shaped, or triangular head, with the apex of the triangle at the midline of the forehead and the base of the triangle at the occiput.
Summary
- Also called
- Triangular skull shape, Wedge shaped head, Wedge shaped skull, Triangular cranium shape, Wedge shaped cranium
Reference genomeGRCh38hg38
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Get my Genome Test48 genes linked to Triangular head shape
Changes in these genes cause rare conditions in which Triangular head shape 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 |
|---|---|---|
| ACTG1actin gamma 1 | Always | In 2 conditions |
| C2CD3C2 domain containing 3 centriole elongation regulator | Always | In 2 conditions |
| ERI1exoribonuclease 1 | Always | In 1 condition |
| FGFR1fibroblast growth factor receptor 1 | Always | In 2 conditions |
| FREM1FRAS1 related extracellular matrix 1 | Always | In 2 conditions |
| GNPTABN-acetylglucosamine-1-phosphate transferase subunits alpha and beta | Always | In 2 conditions |
| GPC3glypican 3 | Always | In 1 condition |
| GTF2H5general transcription factor IIH subunit 5 | Always | In 1 condition |
| IFT140intraflagellar transport 140 | Always | In 1 condition |
| KLHL20kelch like family member 20 | Always | In 1 condition |
| NUP188nucleoporin 188 | Always | In 1 condition |
| PAN2poly(A) specific ribonuclease subunit PAN2 | Always | In 1 condition |
| ASXL1ASXL transcriptional regulator 1 | Very often (80–99%) | In 2 conditions |
| CD96CD96 molecule | Very often (80–99%) | In 2 conditions |
| EFTUD2elongation factor Tu GTP binding domain containing 2 | Very often (80–99%) | In 2 conditions |
| PTCH1patched 1 | Very often (80–99%) | In 1 condition |
| ACTBactin beta | Often (30–79%) | In 2 conditions |
| ARHGEF9Cdc42 guanine nucleotide exchange factor 9 | Often (30–79%) | In 2 conditions |
| DPH1diphthamide biosynthesis 1 | Often (30–79%) | In 2 conditions |
| DPH2diphthamide biosynthesis 2 | Often (30–79%) | In 1 condition |
| PPP3CAprotein phosphatase 3 catalytic subunit alpha | Often (30–79%) | In 1 condition |
| RB1RB transcriptional corepressor 1 | Often (30–79%) | In 1 condition |
| ADNPactivity dependent neuroprotector homeobox | Sometimes (5–29%) | In 1 condition |
| ASXL3ASXL transcriptional regulator 3 | Sometimes (5–29%) | In 1 condition |
| CACHD1cache domain containing 1 | Sometimes (5–29%) | In 1 condition |
| DPF2double PHD fingers 2 | Sometimes (5–29%) | In 1 condition |
| DPM1dolichyl-phosphate mannosyltransferase subunit 1, catalytic | Sometimes (5–29%) | In 1 condition |
| DPM2dolichyl-phosphate mannosyltransferase subunit 2, regulatory | Sometimes (5–29%) | In 1 condition |
| FGFR2fibroblast growth factor receptor 2 | Sometimes (5–29%) | In 1 condition |
| FLI1Fli-1 proto-oncogene, ETS transcription factor | Sometimes (5–29%) | In 1 condition |
| FRMPD4FERM and PDZ domain containing 4 | Sometimes (5–29%) | In 1 condition |
| IL11RAinterleukin 11 receptor subunit alpha | Sometimes (5–29%) | In 1 condition |
| LMNB1lamin B1 | Sometimes (5–29%) | In 1 condition |
| LMNB2lamin B2 | Sometimes (5–29%) | In 1 condition |
| MEGF8multiple EGF like domains 8 | Sometimes (5–29%) | In 1 condition |
| MSX2msh homeobox 2 | Sometimes (5–29%) | In 1 condition |
| MYSM1Myb like, SWIRM and MPN domains 1 | Sometimes (5–29%) | In 1 condition |
| SOX4SRY-box transcription factor 4 | Sometimes (5–29%) | In 1 condition |
| USP7ubiquitin specific peptidase 7 | Sometimes (5–29%) | In 1 condition |
| GLI3GLI family zinc finger 3 | Rarely (1–4%) | In 2 conditions |
Show 8 more genes
| Gene | How often it is seen | Conditions |
|---|---|---|
| PLOD1procollagen-lysine,2-oxoglutarate 5-dioxygenase 1 | Rarely (1–4%) | In 1 condition |
| CHD4chromodomain helicase DNA binding protein 4 | Not recorded | In 1 condition |
| FLCNfolliculin | Not recorded | In 1 condition |
| HUWE1HECT, UBA and WWE domain containing E3 ubiquitin protein ligase 1 | Not recorded | In 1 condition |
| PDHXpyruvate dehydrogenase complex component X | Not recorded | In 1 condition |
| RAI1retinoic acid induced 1 | Not recorded | In 1 condition |
| SLC6A9solute carrier family 6 member 9 | Not recorded | In 1 condition |
| ZIC2Zic family zinc finger 2 | Not recorded | 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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