Bartsocas-Papas syndrome 1
Findings
No curated finding names Bartsocas-Papas syndrome 1 yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
A rare, inherited, popliteal pterygium syndrome characterized by severe popliteal webbing, microcephaly, a typical face with short palpebral fissures, ankyloblepharon, hypoplastic nose, filiform bands between the jaws and facial clefts, oligosyndactyly, genital abnormalities, and additional ectodermal anomalies (i.e. absent hair, eyebrows, lashes, nails). It is often fatal in the neonatal period, but patients living until childhood have been reported.
Definition from the Mondo Disease Ontology (MONDO:0009901), read 2026-09-29. CC BY 4.0.
- Inheritance
- Autosomal recessive inheritance
- Onset and course
- Congenital onset · Fetal onset
HPO, annotations 2026-09-02
Features
73 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.
- AblepharonHPOHP:0011224
- 1 of 1 reported patient
- Absent external genitaliaHPOHP:0000042
- 1 of 1 reported patient
- Absent palmar creaseHPOHP:0010489
- 3 of 3 reported patients
- Absent thumbHPOHP:0009777
- 1 of 1 reported patient
- Frequent (30% to 79% of cases)
- AlopeciaHPOHP:0001596
- 4 of 4 reported patients
- Alopecia totalisHPO
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.
- HGNC:496HGNC:496
- Definitive · G2P · Autosomal recessive · 2025
- Strong · PanelApp Australia · Autosomal recessive · 2025
- Supportive · Orphanet · Autosomal recessive · 2021
Where it sits
Other names
6 names
Resolves to: Bartsocas-Papas syndrome 1
- Also called
- autosomal recessive popliteal pterygium syndromeBartsocas Papas syndromeBartsocas-Papas syndromelethal popliteal pterygium syndromepopliteal pterygium syndrome, Bartsocas-Papas type 1popliteal pterygium syndrome, lethal type