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Multiple epiphyseal dysplasias (MED/EDMs) are characterized by epiphyseal anomalies causing joint pain early in life, recurrent osteochondritis and early arthrosis. The EDMs are a heterogeneous group of diseases with variable expression classed as MED/EDMs 1-6.
No HPO annotations are available for this condition.
SLC26A2-related multiple epiphyseal dysplasia (SLC26A2-MED) is characterized by early-onset joint pain, malformations of hands, feet, and knees, and scoliosis. Approximately 50% of affected individuals have an abnormal finding at birth, including clubfoot, clinodactyly, cleft palate, or (rarely) cystic ear swelling. However, only half of those with findings at birth are suspected of having a skeletal dysplasia. Skeletal manifestations. Chronic joint pain most often occurs in the hips, knees, wrists, and fingers. The onset of joint pain is variable; adolescents are usually symptomatic in multiple joints, and joint pain increases after physical exercise.
SLC26A2-related multiple epiphyseal dysplasia (SLC26A2-MED) should be suspected in individuals with the following clinical and radiographic features.
Clinical features
Joint pain (usually in the hips and knees). Onset of pain is variable, but usually occurs in late childhood. Some individuals have no pain.
Deformity of hands, feet, and knees
No approved treatments are currently available for multiple epiphyseal dysplasia. The disease remains an area of unmet medical need.
To establish the extent of disease in an individual diagnosed with SLC26A2-related multiple epiphyseal dysplasia (SLC26A2-MED), the following evaluations (if not performed as part of the evaluation that led to the diagnosis) are recommended:
Radiographic surveillance by an orthopedist is appropriate.
Source: GeneReviews — "SLC26A2-Related Multiple Epiphyseal Dysplasia"
Estimated prevalence: 1-9 in 100,000 (Uncommon).
No clinical trials have been registered for multiple epiphyseal dysplasia.
137 publications have been identified in PubMed for multiple epiphyseal dysplasia. Research spans Basic Science / Preclinical (29%), Review / Meta-Analysis (28%), and Case Report / Case Series (18%).
Research Type | Count | % of Total |
|---|---|---|
Laboratory research | 40 | 29% |
Data assembled from 4 of 12 sources · Last updated Sep 19, 2026, 12:14 AM UTC
European rare disease database
Genetic and Rare Diseases Info Center
Source: GeneReviews — "SLC26A2-Related Multiple Epiphyseal Dysplasia"
Scoliosis
Radiographic features
Source: GeneReviews — "SLC26A2-Related Multiple Epiphyseal Dysplasia"
SLC26A2-related multiple epiphyseal dysplasia (SLC26A2-MED) needs to be distinguished from the more common autosomal dominant forms of multiple epiphyseal dysplasia (MED). Clinical and radiographic differences between the genetically distinct forms of these skeletal dysplasias may allow clinicians to distinguish between them . Note: In contrast to autosomal dominant MED, prepubertal children with SLC26A2-MED usually do not have short stature.
Table 3.
Autosomal Dominant Multiple Epiphyseal Dysplasia*
Gene | Clinical Features
| COL9A1-, COL9A2-, COL9A3-MED appear to have more severe knee involvement but relative sparing of the hips, resulting in a milder course than MED assoc w/COMP or SLC26A2 pathogenic variants.
COL9A2
COL9A3
Source: GeneReviews — "SLC26A2-Related Multiple Epiphyseal Dysplasia"
Biomarker and diagnostic research for multiple epiphyseal dysplasia has been reported in the published literature.
Elicitation of pain history
Radiographs of the entire spine (AP and lateral), pelvis (AP), and knees (AP and lateral), to determine the extent and severity of joint involvement
Consultation with a medical geneticist, certified genetic counselor, or certified advanced genetic nurse to inform affected individuals and their families about the nature, mode of inheritance, and implications of SLC26A2-MED to facilitate medical and personal decision making
Symptomatic individuals should be seen by a physical therapist and an orthopedist to assess the possibility of treatment (physiotherapy for muscular strengthening and maintaining mobility, cautious use of analgesic medications such as nonsteroidal anti-inflammatory drugs) and the optimal time for surgery (joint replacement), if indicated. Intensive physiotherapy may delay joint contractures and help maintain mobility. Psychosocial support addressing issues of chronic pain and career counseling is warranted.
Radiographic surveillance by an orthopedist is appropriate.
Sports involving joint overload are to be avoided.
Predictive testing of at-ris...
Source: GeneReviews — "SLC26A2-Related Multiple Epiphyseal Dysplasia"
Sports involving joint overload are to be avoided.
Source: GeneReviews — "SLC26A2-Related Multiple Epiphyseal Dysplasia"
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 — "SLC26A2-Related Multiple Epiphyseal Dysplasia"
View trials for multiple epiphyseal dysplasia
39 |
28% |
Patient case studies | 25 | 18% |
Disease patterns and progression | 21 | 15% |
Testing and diagnosis research | 5 | 4% |
Clinical study results | 3 | 2% |
New treatment approaches | 3 | 2% |
Other research | 1 | 1% |
Cormier-Daire V (2026). [PMID: 39864410](https://pubmed.ncbi.nlm.nih.gov/39864410/). *Horm Res Paediatr*. [Epidemiology / Natural History]
Tsujioka Y (2026). [PMID: 42094029](https://pubmed.ncbi.nlm.nih.gov/42094029/). *Mol Syndromol*. [Review / Meta-Analysis]
Jayan R (2026). [PMID: 41653544](https://pubmed.ncbi.nlm.nih.gov/41653544/). *Ann Diagn Pathol*. [Basic Science / Preclinical]
Young RE (2026). [PMID: 40931319](https://pubmed.ncbi.nlm.nih.gov/40931319/). *Clin Genet*. [Basic Science / Preclinical]
Econs MJ (2026). [PMID: 40913471](https://pubmed.ncbi.nlm.nih.gov/40913471/). *J Bone Miner Res*. [Epidemiology / Natural History]
Taner HE (2026). [PMID: 42074581](https://pubmed.ncbi.nlm.nih.gov/42074581/). *Genes (Basel)*. [Epidemiology / Natural History]
Ni X (2026). [PMID: 41798190](https://pubmed.ncbi.nlm.nih.gov/41798190/). *Front Endocrinol (Lausanne)*. [Review / Meta-Analysis]
Leitão E (2026). [PMID: 41912934](https://pubmed.ncbi.nlm.nih.gov/41912934/). *Nat Genet*. [Review / Meta-Analysis]
Szerksznis W (2026). [PMID: 40911070](https://pubmed.ncbi.nlm.nih.gov/40911070/). *Orthopadie (Heidelb)*. [Case Report / Case Series]
Woods S (2026). [PMID: 41651153](https://pubmed.ncbi.nlm.nih.gov/41651153/). *Osteoarthritis Cartilage*. [Basic Science / Preclinical]