trichorhinophalangeal syndrome type II
Findings
No curated finding names trichorhinophalangeal syndrome type II yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Langer-Giedon syndrome, also known as trichorhinophalangeal syndrome type 2, is a very rare, genetic, multiple congenital anomaly disorder characterized by bone abnormalities, distinctive facial features, multiple exostoses, and intellectual disability.
Definition from the Mondo Disease Ontology (MONDO:0007874), read 2026-09-29. CC BY 4.0.
- Inheritance
- Autosomal dominant inheritance
- Onset and course
- Infantile onset · Childhood onset
HPO, annotations 2026-09-02
Features
94 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.
- Cone-shaped epiphyses of the phalanges of the handHPOHP:0010230
- 4 of 4 reported patients
- Very frequent (80% to 99% of cases)
- Multiple long-bone exostosesHPOHP:0005039
- 4 of 4 reported patients
- Very frequent (80% to 99% of cases)
- Sparse scalp hairHPO · MondoHP:0002209
- 4 of 4 reported patients
- Very frequent (80% to 99% of cases)
- Bone painHPOHP:0002653
- Very frequent (80% to 99% of cases)
- Bulbous noseHPOHP:0000414
- 3 of 4 reported patients
- Very frequent (80% to 99% of cases)
- Deep philtrumHPOHP:0002002
Show the remaining 82
- Thin upper lip vermilionHPO · MondoHP:0000219
- 1 of 4 reported patients
- Very frequent (80% to 99% of cases)
- GynecomastiaHPOHP:0000771
- 3 of 4 reported patients
- Aplasia/Hypoplasia of the mandibleHPOHP:0009118
- Frequent (30% to 79% of cases)
- Intellectual disabilityHPOHP:0001249
- 1 of 4 reported patients
- Frequent (30% to 79% of cases)
- Joint dislocationHPOHP:0001373
- Frequent (30% to 79% of cases)
- Joint hypermobilityHPOHP:0001382
Where it sits
Other names
4 names
Resolves to: trichorhinophalangeal syndrome type II
- Also called
- deletion 8q24.1Langer-Giedion syndromemonosomy 8q24.1trichorhinophalangeal syndrome type 2