KBG syndrome
Findings
No curated finding names KBG syndrome yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
KBG syndrome is a rare condition characterized by a typical facial dysmorphism, macrodontia of the upper central incisors, skeletal (mainly costovertebral) anomalies and developmental delay.
Definition from the Mondo Disease Ontology (MONDO:0007846), read 2026-09-29. CC BY 4.0.
- Inheritance
- Autosomal dominant inheritance
HPO, annotations 2026-09-02
Features
61 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.
- Anteverted naresHPOHP:0000463
- 7 of 7 reported patients
- Frequent (30% to 79% of cases)
- Clinodactyly of the 5th fingerHPOHP:0004209
- 7 of 7 reported patients
- Delayed skeletal maturationHPOHP:0002750
- 4 of 4 reported patients
- Frequent (30% to 79% of cases)
- Intellectual disabilityHPO · MondoHP:0001249
- 7 of 7 reported patients
- Long philtrumHPOHP:0000343
- 7 of 7 reported patients
- Frequent (30% to 79% of cases)
- MacrodontiaHPOHP:0001572
- 6 of 6 reported patients
- Frequent (30% to 79% of cases)
Show the remaining 49
- Low posterior hairlineHPOHP:0002162
- 6 of 7 reported patients
- Protruding earHPOHP:0000411
- 6 of 7 reported patients
- PtosisHPOHP:0000508
- 6 of 7 reported patients
- Short statureHPOHP:0004322
- 6 of 7 reported patients
- Frequent (30% to 79% of cases)
- Prominent nasal bridgeHPOHP:0000426
- 5 of 7 reported patients
- Frequent (30% to 79% of cases)
- SynophrysHPOHP:0000664
- 5 of 7 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.
- ANKRD11HGNC:21316
- Definitive · Ambry Genetics · Autosomal dominant · 2015
- Definitive · ClinGen · Autosomal dominant · 2019
- Definitive · Illumina · Autosomal dominant · 2018
- Definitive · G2P · Autosomal dominant · 2024
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal dominant · 2023
- Strong · PanelApp Australia · Autosomal dominant · 2025
- Supportive · Orphanet · Autosomal dominant · 2021
Where it sits
Other names
1 name
Resolves to: KBG syndrome
- Also called
- short stature-facial and skeletal anomalies-intellectual disability-macrodontia syndrome