Pilarowski-Bjornsson syndrome
MONDO:0060568Mondo
Findings
No curated finding names Pilarowski-Bjornsson syndrome yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
- Inheritance
- Autosomal dominant inheritance
- Onset and course
- Infantile onset
HPO, annotations 2026-09-02
Features
25 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.
- Global developmental delayHPOHP:0001263
- 5 of 5 reported patients
- Very frequent (80% to 99% of cases)
- HypotoniaHPOHP:0001252
- 5 of 5 reported patients
- Generalized hypotoniaHPOHP:0001290
- Very frequent (80% to 99% of cases)
- Speech apraxiaHPOHP:0011098
- 4 of 5 reported patients
- Frequent (30% to 79% of cases)
- Intellectual disabilityHPOHP:0001249
- 2 of 3 reported patients
- Frequent (30% to 79% of cases)
- AllergyHPOHP:0012393
- Frequent (30% to 79% of cases)
- Almond-shaped palpebral fissureHPOHP:0007874
- 2 of 5 reported patients
- Frequent (30% to 79% of cases)
- AutismHPOHP:0000717
- 3 of 5 reported patients
- Dermal translucencyHPOHP:0010648
- 3 of 5 reported patients
- Frequent (30% to 79% of cases)
- Downslanted palpebral fissuresHPOHP:0000494
- 3 of 5 reported patients
- Frequent (30% to 79% of cases)
- Frontal bossingHPOHP:0002007
- Frequent (30% to 79% of cases)
- Midface retrusionHPOHP:0011800
- 3 of 5 reported patients
- Frequent (30% to 79% of cases)
Show the remaining 13
- Motor stereotypyHPOHP:0000733
- 3 of 5 reported patients
- Occasional (5% to 29% of cases)
- Periorbital fullnessHPOHP:0000629
- 3 of 5 reported patients
- Pointed chinHPOHP:0000307
- Frequent (30% to 79% of cases)
- Thick eyebrowHPOHP:0000574
- Frequent (30% to 79% of cases)
- Broad eyebrowHPOHP:0011229
- 2 of 5 reported patients
- ImmunodeficiencyHPOHP:0002721
- 2 of 5 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.
- CHD1HGNC:1915
- Strong · G2P · Autosomal dominant · 2025
- Supportive · Orphanet · Autosomal dominant · 2021
- Limited · Ambry Genetics · Autosomal dominant · 2024
- Limited · Labcorp Genetics (formerly Invitae) · Unknown · 2017