Tukel Syndrome (FEOM)

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Disease Ontology 12 DOID:0080143 OMIM 57 609428 PS135700 KEGG 37 H00838 ICD10 via Orphanet 34 H49.8 UMLS via Orphanet 73 C1302995

Orphanet 59 ORPHA45358 MedGen 42 C1836217 EFO 17 EFO_1001985 UMLS 72 C1302995 C1836217

Genetics Home Reference : ²⁵ Congenital fibrosis of the extraocular muscles is a disorder that affects the muscles that surround the eyes. These muscles control eye movement and the position of the eyes (for example, looking straight ahead). Congenital fibrosis of the extraocular muscles prevents the normal development and function of these muscles. As a result, affected individuals are unable to move their eyes normally. Most people with this condition have difficulty looking upward, and their side-to-side eye movement may also be limited. The eyes may be misaligned such that they look in different directions (strabismus). Instead of moving their eyes, affected individuals may need to turn their head to track moving objects. Additionally, many people with congenital fibrosis of the extraocular muscles have droopy eyelids (ptosis), which further limits their vision. Researchers have identified at least four forms of congenital fibrosis of the extraocular muscles, designated CFEOM1, CFEOM2, CFEOM3, and Tukel syndrome. The specific problems with eye movement vary among the types. Tukel syndrome is characterized by missing fingers (oligodactyly) and other hand abnormalities in addition to problems with eye movement.

MalaCards based summary : Tukel Syndrome, also known as congenital fibrosis of the extraocular muscles, is related to fibrosis of extraocular muscles, congenital, 2 and kearns-sayre syndrome, and has symptoms including ophthalmoplegia An important gene associated with Tukel Syndrome is KIF21A (Kinesin Family Member 21A), and among its related pathways/superpathways are Phagosome and Gap junction. The drugs Angiogenesis Inhibitors and Vaccines have been mentioned in the context of this disorder. Affiliated tissues include eye, bone and brain, and related phenotypes are ptosis and syndactyly

NIH Rare Diseases : ⁵³ Congenital fibrosis of extraocular muscles (CFEOM) refers to a group of rare conditions that affect the normal development and function of the muscles that control eye movement and position. In general, people affected by these conditions are unable to move their eyes in certain directions and often have strabismus and/or droopy eyelids (ptosis); however, the severity of the condition and the associated signs and symptoms vary significantly by subtype. CFEOM can be caused by changes (mutations) in several genes, including KIF21A, TUBB3, PHOX2A, and TUBB2B. In some cases, the underlying genetic cause is unknown. CFEOM can be inherited in an autosomal dominant or autosomal recessive manner, depending on the subtype. Treatment is based on the signs and symptoms present in each person.

KEGG : ³⁷ Congenital fibrosis of the extraocular muscles (CFEOM) describes a group of rare congenital eye movement disorders that result from the dysfunction of all or part of the oculomotor (CN 3) and the trochlear (CN 4) nerves, and/or the muscles these nerves innervate. CFEOM is characterized by non-progressive, restrictive ophthalmoplegia of the extraocular muscles and congenital blepharoptosis. Several clinical phenotypes for familial CFEOM have been delineated.

More information from OMIM: 609428 PS135700

GeneReviews: NBK1348

Clinical features from OMIM:

609428

Search NIH Clinical Center for Tukel Syndrome

Search GEO for disease gene expression data for Tukel Syndrome.