hyperphosphatasia with intellectual disability syndrome 6
Findings
No curated finding names hyperphosphatasia with intellectual disability syndrome 6 yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Any hyperphosphatasia-intellectual disability syndrome in which the cause of the disease is a mutation in the PIGY gene.
Definition from the Mondo Disease Ontology (MONDO:0014780), read 2026-09-29. CC BY 4.0.
- Inheritance
- Autosomal recessive inheritance
- Onset and course
- Death in infancy · Congenital onset · Death in childhood
HPO, annotations 2026-09-02
Features
40 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- 2-3 toe syndactylyHPOHP:0004691
- 2 of 2 reported patients
- Abdominal painHPOHP:0002027
- 2 of 2 reported patients
- Anteverted naresHPOHP:0000463
- 2 of 2 reported patients
- Axial hypotoniaHPOHP:0008936
- 2 of 2 reported patients
- Cerebral visual impairmentHPOHP:0100704
- 2 of 2 reported patients
- Deeply set eyeHPOHP:0000490
- 2 of 2 reported patients
- Depressed nasal bridgeHPOHP:0005280
Show the remaining 28
- High palateHPOHP:0000218
- 2 of 2 reported patients
- Hip contractureHPOHP:0003273
- 2 of 2 reported patients
- Hip dysplasiaHPOHP:0001385
- 2 of 2 reported patients
- Narrow foreheadHPOHP:0000341
- 2 of 2 reported patients
- OsteopeniaHPOHP:0000938
- 2 of 2 reported patients
- SeizureHPOHP:0001250
- 2 of 2 reported patients
Genes
1 gene
Germline variants in the gene encoding each protein, as classified by GenCC submitters, each in their own words. Limited, disputed and refuted submissions are listed too.
- PIGYHGNC:28213
- Strong · G2P · Autosomal recessive · 2025
- Moderate · PanelApp Australia · Autosomal recessive · 2025
- Limited · Ambry Genetics · Autosomal recessive · 2020
- Limited · Labcorp Genetics (formerly Invitae) · Unknown · 2019
- Limited · ClinGen · Autosomal recessive · 2025
Where it sits
Other names
7 names
Resolves to: hyperphosphatasia with intellectual disability syndrome 6
- Also called
- HPMRS6hyperphosphatasia with intellectual disability syndrome 6; HPMRS6hyperphosphatasia with intellectual disability syndrome type 6hyperphosphatasia with mental retardation syndrome 6hyperphosphatasia with mental retardation syndrome type 6hyperphosphatasia-intellectual disability syndrome caused by mutation in PIGYPIGY hyperphosphatasia-intellectual disability syndrome