Özet:

Tubulinopathies describe a family of neurodevelopmental / neurodegenerative diseases caused by mutations in various genes encoding tubulin isoforms. Mutations in TBCD (Tubulin-Specific Chaperone D) that encodes one of the five tubulin-specific chaperones involved in tubulin folding and polymerization cause rare neurodevelopmental Encephalopathy, progressive, early-onset, with brain atrophy and thin corpus callosum (PEBAT) syndrome. The syndrome in question has neurodevelopmental and neurodegenerative features characterized by early-onset cortical atrophy, secondary hypomyelination, microcephaly, developmental delay, mental retardation, epilepsy, optic atrophy, spastic quadriplegia and thin corpus callosum on brain magnetic resonance imaging. Mutations in TBCD which cause PEBAT syndrome are inherited with an autosomal recessive inheritance pattern. Therefore, consanguineous marriages are an important risk factor for the mutation. A homozygous [c.230A>G (p.His77Arg) (p.H77R)] mutation in the TBCD gene was detected in the whole exome sequencing analysis of a 5-year-old male patient who applied with the complaints of epilepsy and neuromotor retardation.

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