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Features include always present findings: Short stature, Broad nasal tip, Cutis laxa, and Wide nasal bridge and others; and very common findings: Long philtrum, Brachydactyly, Coarse facial features, and Deep palmar crease and others. 33 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Head and neck | 4 | Coarse facial features, High palate, Thick lower lip vermilion |
LTBP1 encodes latent transforming growth factor beta binding protein 1 (1,721 aa). Key regulator of transforming growth factor beta (TGFB1, TGFB2 and TGFB3) that controls TGF-beta activation by maintaining it in a latent state during storage in extracellular space. Highest expression in Artery Aorta (576.9 TPM) and Artery Tibial (380.4 TPM).
Cutis laxa, autosomal recessive, type 2E is associated with mutations in the LTBP1 gene on chromosome 2.
The LTBP1 protein participates in LTBP1:TGFB1:LAP1:LAP1-binding integrins and LTBP1, LTBP3 bind TGF-Beta pathways.
LTBP1 is classified as a druggable target (Druggable Genome category) with score 0.0.
Genetic testing for LTBP1 is available. Testing is considered confirmatory for diagnosis.
Phenotype severity distribution: 5 always present features, 9 very common features, 13 common features.
Data assembled from 4 of 12 sources · Last updated Sep 19, 2026, 9:40 PM UTC
Online Mendelian Inheritance in Man
Bones and joints |
4 |
Excessive inward curve of the lower back (lumbar hyperlordosis), Sideways curvature of the spine (scoliosis), Ovoid vertebral bodies |
Ears | 1 | Hearing loss (hearing impairment) |
Growth and development | 1 | Short stature |
Brain and nerves | 1 | Specific learning disability |
Digestive system | 1 | Feeding difficulties |
Arms and legs | 1 | Clinodactyly of the 5th finger |