Kisho is an information platform, not a medical provider. Nothing on this site constitutes medical advice, diagnosis, or treatment recommendations. All content is aggregated from publicly available sources (including ClinicalTrials.gov, PubMed, FDA.gov, and Orphanet) and is provided for informational purposes only. Clinical trial eligibility, treatment decisions, and any health-related actions should always be discussed with a qualified healthcare professional. Kisho does not endorse any specific therapy, organization, or clinical trial. Terms of use · Privacy policy
Features include always present findings: Thoracic lordosis, Narrow mouth, Short nose, and Hypertelorism and others; and very common findings: Strabismus, Constipation, Recurrent skin infections, and Atrophic scars and others. 73 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Bones and joints | 5 | Thoracic lordosis, Joint dislocation, Joint hypermobility |
Muscles | 5 | Low muscle tone (hypotonia), Generalized hypotonia, Delayed gross motor development |
Head and neck | 5 | Cleft palate, Facial asymmetry, Thin upper lip vermilion |
Brain and nerves | 4 | Intellectual disability, Global developmental delay, Delayed gross motor development |
Heart and blood vessels | 4 | Aortic regurgitation, Mitral regurgitation, Atrial septal defect |
Eyes | 3 | Strabismus, Retinal detachment, Glaucoma |
Skin | 3 | Recurrent skin infections, Fragile skin, Hyperextensible skin |
Digestive system | 2 | Constipation, Intestinal malrotation |
Ears | 1 | Hearing loss (hearing impairment) |
Blood and immune system | 1 | Recurrent skin infections |
Lungs and breathing | 1 | Pneumothorax |
Kidneys and urinary system | 1 | Nephrotic syndrome |
Age of onset: infancy, adolescence.
Musculocontractural Ehlers-Danlos syndrome (mcEDS) is characterized by multiple congenital contractures, progressive foot and ankle deformities, hypermobility of the small joints, recurrent dislocations, spinal deformities, characteristic craniofacial features, skin features (hyperextensibility, bruisability, delayed wound healing, and fragility with atrophic scars), large subcutaneous hematoma, and ocular abnormalities . Additional organ systems can be involved including genitourinary, cardiovascular, neurologic, and gastrointestinal. To date, 70 individuals from 51 families have been identified with biallelic pathogenic variants in CHST14 (mcEDS-CHST14) [, , , ] and 15 individuals from nine families have been identified with biallelic pathogenic variants in DSE (mcEDS-DSE) . The following description of the phenotypic features associated with this condition is based on these reports. Table 2. Musculocontractural Ehlers-Danlos Syndrome: Frequency of Select Features
Feature | % of All Persons w/Feature1 | Proportion of Persons w/Feature by Gene | Comment |
|---|---|---|---|
CHST14 encodes carbohydrate sulfotransferase 14 (376 aa). Catalyzes the transfer of sulfate to position 4 of the N-acetylgalactosamine (GalNAc) residue of dermatan sulfate. Highest expression in Cervix Endocervix (33.5 TPM) and Cervix Ectocervix (32.1 TPM).
Ehlers-Danlos syndrome, musculocontractural type 1 is caused by mutations in the CHST14 gene on chromosome 15.
The CHST14 protein participates in CHST14 substrates pathway.
CHST14 is classified as a druggable target (Enzyme category) with score 0.0.
No clinically relevant genotype-phenotype correlations have been identified.
Source: GeneReviews — "Musculocontractural Ehlers-Danlos Syndrome"
No consensus clinical diagnostic criteria for musculocontractural Ehlers-Danlos syndrome (mcEDS) have been published.
Musculocontractural EDS should be suspected in probands with two major criteria; the presence of any additional minor criteria supports the diagnosis .
Major criteria
Source: GeneReviews — "Musculocontractural Ehlers-Danlos Syndrome"
In newborns and young infants with characteristic craniofacial features and multiple congenital contractures, the differential diagnosis of musculocontractural Ehlers-Danlos syndrome (mcEDS) includes arthrogryposis syndromes (e.g., Freeman-Sheldon syndrome) and some hereditary connective tissue disorders (e.g., Loeys-Dietz syndrome, early-onset Marfan syndrome, spondylodysplastic EDS, kyphoscoliosis EDS , and Shprintzen-Goldberg syndrome ). In individuals with joint hypermobility/dislocation, skin hyperextensibility, and easy bruisability, the differential diagnosis of mcEDS includes other types of EDS. Typically joint hypermobility in individuals with mcEDS is limited to small joints, whereas generalized joint hypermobility is a hallmark of classic EDS and hypermobile EDS. Table 3. Genes of Interest in the Differential Diagnosis of Musculocontractural Ehlers-Danlos Syndrome
Gene(s) | Disorder | MOI | Clinical Features of Disorder |
|---|---|---|---|
FBN1 |
Genetic testing for CHST14 is available. Testing is considered confirmatory for diagnosis.
No approved treatments are currently available for Ehlers-Danlos syndrome, musculocontractural type 1. The disease remains an area of unmet medical need.
Health care guidelines for musculocontractural Ehlers-Danlos syndrome (mcEDS) have been proposed . The following recommendations are based on these reports and the authors' personal experience managing individuals with mcEDS.
To establish the extent of disease and needs in an individual diagnosed with mcEDS, the evaluations summarized (if not performed as part of the evaluation that led to the diagnosis) are recommended.
Table 4.
Musculocontractural Ehlers-Danlos Syndrome: Recommended Evaluations Following Initial Diagnosis
System/Concern | Evaluation | Comment
| Orthopedic eval w/radiographs as needed | To assess for congenital contractures foot, spine, pectus deformities
| Ophthalmologic eval incl slit lamp fundus exam | To assess for refractive errors strabismus
| • Assessment for cryptorchidism in males
Kidney US for hydronephrosis
|
| Cardiology eval for valve abnormality congenital heart defect |
| • Assessment of tone motor development
Cranial US, followed by brain MRI as needed
|
| Assessment for constipation inguinal umbilical hernias |
| Audiology eval (ABR, ASSR) |
| Clinical exam to assess for cleft palate cleft soft palate |
| By genetics professionals1 | To obtain a pedigree inform affected persons their families re nature, MOI, implications of mcEDS to facilitate medical personal decision making
| Social support and re...
Source: GeneReviews — "Musculocontractural Ehlers-Danlos Syndrome"
Avoid the following:
Contact or competitive sports
Upper arm sphygmomanometer and use of a tight tourniquet during blood collection in individuals with hyperalgesia to pressure
Source: GeneReviews — "Musculocontractural Ehlers-Danlos Syndrome"
Search ClinicalTrials.gov in the US and EU Clinical Trials Register in Europe for access to information on clinical studies for a wide range of diseases and conditions. Note: There may not be clinical trials for this disorder.
Source: GeneReviews — "Musculocontractural Ehlers-Danlos Syndrome"
View trials for Ehlers-Danlos syndrome, musculocontractural type 1
To monitor existing manifestations, the individual's response to supportive care, and the emergence of new manifestations, the evaluations summarized in are recommended. Table 6. Musculocontractural Ehlers-Danlos Syndrome: Recommended Surveillance
System/Concern | Evaluation | Frequency |
|---|---|---|
Foot deformities | Orthopedic eval (physical exam, radiologic exam) | In infancy (after treatment for clubfeet), every 3 mos; In childhood, every 6 mos; In adolescence adulthood, annually as needed Spine deformities |
Osteoporosis | Bone density scan | Annually beginning in adulthood |
Crowded teeth | Orthodontic eval | Annually beginning in childhood |
Ophthalmologic (e.g., refractive errors, strabismus, glaucoma, retinal detachment) | Ophthalmologic eval (incl vision, intraocular pressure, fundus exam) | Annually beginning in infancy Genitourinary (e.g., cryptorchidism, hypogonadism, hydronephrosis, nephrolithiasis) |
Gross motor delay | Assessment of gross motor skills | Every 3 mos beginning in infancy; Every 6 mos through childhood OAEs = otoacoustic emissions; US = ultrasound |
Source: GeneReviews — "Musculocontractural Ehlers-Danlos Syndrome"
Phenotype severity distribution: 18 always present features, 5 very common features, 9 common features.
No clinical trials have been registered for Ehlers-Danlos syndrome, musculocontractural type 1.
4 publications have been identified in PubMed for Ehlers-Danlos syndrome, musculocontractural type 1. Kisho has analyzed 3 by research type. Research spans Review / Meta-Analysis (33%), Case Report / Case Series (33%), and Basic Science / Preclinical (33%).
Laggner R (2026). [PMID: 40760347](https://pubmed.ncbi.nlm.nih.gov/40760347/). *Wiener klinische Wochenschrift*. [Case Report / Case Series]
Ono F (2025). [PMID: 40327642](https://pubmed.ncbi.nlm.nih.gov/40327642/). *PloS one*. [Basic Science / Preclinical]
Umapathy N (2024). [PMID: 38834308](https://pubmed.ncbi.nlm.nih.gov/38834308/). *BMJ case reports*. [Review / Meta-Analysis]
Data assembled from 7 of 12 sources · Last updated Sep 20, 2026, 5:36 PM UTC
Online Mendelian Inheritance in Man
Common questions about Ehlers-Danlos syndrome, musculocontractural type 1
Characteristic finger shape |
100% |
61/61 |
Progressive foot ankle deformities | 98% | 52/53 | 12/12 |
Joint hypermobility | 93% | 44/44 | 9/13 |
Talipes equinovarus | 92% | 59/62 | 11/14 |
Multiple congenital contractures | 90% | 58/59 | 8/14 |
Spinal deformities | 85% | 41/47 | 10/13 |
Pectus deformities | 84% | 38/45 | 4/5 |
Adducted thumbs | 83% | 48/55 | 5/9 |
Recurrent/chronic joint dislocations | 83% | 47/52 | 1/6 |
Osteoporosis/ bone mineral density | 76% | 14/19 | 2/2 |
Marfanoid habitus/ slender build | 64% | 29/45 | 3/5 |
Craniofacial | Large fontanel w/delayed closure | 98% | 41/42 |
Hypertelorism | 93% | 57/62 | 12/12 |
Downslanted palpebral fissures | 95% | 58/61 | 13/14 |
Short palpebral fissures | 77% | 32/40 | 5/8 |
Blue sclerae | 87% | 48/56 | 7/7 |
Small mouth/micro-retrognathia | 88% | 36/41 | 8/9 |
High palate | 82% | 43/50 | 3/6 |
Ear deformity | 81% | 42/53 | 8/9 |
Slender face/ protruding jaw | 80% | 34/41 | 3/5 |
Crowded teeth | 79% | 19/25 | 4/4 |
Facial asymmetry | 57% | 22/37 | 2/5 |
Long philtrum | 75% | 44/55 | 7/13 |
Short nose w/hypoplastic columella | 69% | 40/54 | 3/8 |
Thin vermilion of upper lip | 66% | 36/55 | 8/12 |
Midface hypoplasia | 60% | 26/45 | 5/7 |
Brachycephaly/ flat occiput | 52% | 22/41 | 3/7 |
Skin | Fine palmar wrinkling | 97% | 54/55 |
Hyperextensibility | 84% | 51/51 | 3/13 |
Bruisability | 85% | 48/49 | 4/12 |
Delayed wound healing | 78% | 29/36 | 3/5 |
Hyperalgesia to pressure | 75% | 29/39 | 1/1 |
Fragility | 74% | 44/49 | 2/13 |
Atrophic scars | 72% | 41/49 | 2/11 |
Ophthalmologic | Refractive error | 93% | 40/43 |
Strabismus | 64% | 29/44 | 3/6 |
Glaucoma | 45% | 20/41 | 1/6 |
Retinal detachment | 32% | 15/43 | 0/4 |
Genitourinary | Cryptorchidism | 83% | 21/24 |
Hydronephrosis | 50% | 19/37 | 1/3 |
Bladder dysfunction | 48% | 14/28 | 1/3 |
Nephrolithiasis or cystolithiasis | 27% | 10/35 | 0/2 |
Cardiovascular | Large subcutaneous hematoma | 80% | 42/52 |
Cardiac valve abnormalities | 36% | 16/43 | 2/7 |
Congenital heart defects | 25% | 11/50 | 3/7 |
Neurologic | Gross motor delay | 78% | 48/55 |
Hypotonia | 76% | 36/42 | 3/9 |
Ventricular abnormalities | 45% | 15/30 | 0/3 |
Hypoplasia of septum pellucidum | 20% | 5/22 | 0/3 |
Dandy-Walker variant | 9% | 2/20 | 0/3 |
Source: GeneReviews — "Musculocontractural Ehlers-Danlos Syndrome"
AD |
Craniofacial features; Slender fingers |
Loeys-Dietz syndrome | ADAR1 | joint mobility, esp of hands (camptodactyly) feet (clubfeet) in some persons; Easy bruising | Progressive cardiovascular lesions; Absence of skin fragility |
MYH3 | Freeman-Sheldon syndrome (OMIM 193700) | AD | Multiple congenital contractures |
Shprintzen-Goldberg syndrome | AD | Craniofacial features; Hypotonia; Inguinal or umbilical hernia; Skeletal manifestations (pectus deformity, camptodactyly, scoliosis, joint hypermobility) | ID behavioral abnormalities in 80%2 Other types of EDS3 |
ADAMTS2 | Dermatosparaxis EDS (OMIM 225410) | AR | Atrophic scarring; Easy bruising; Skin hyperextensibility; Soft, doughy skin |
AEBP1 | Classic-like EDS type 2 (OMIM 618000) | AR | Easy bruising; Skin hyperextensibility |
SLC39A13 | Spondylodysplastic EDS (OMIM 130070, 612350, 615349) | AR | Joint hypermobility (distal joints); Kyphoscoliosis (B3GALT6) |
COL1A2 | Arthrochalasia EDS (OMIM 130060, 617821) | AD | Atrophic scarring; Easy bruising; Skin hyperextensibility; Recurrent joint subluxations/dislocations |
Source: GeneReviews — "Musculocontractural Ehlers-Danlos Syndrome"