Turgay Coskun

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We report three infants with the diagnosis of molybdenum cofactor deficiency. The key findings leading to diagnosis were neonatal seizures unresponsive to treatment, craniofacial dysmorphic features, hyperexcitability, low blood uric acid levels, and neuroimaging findings. The parents were consanguineous in two of these patients. The diagnosis was(More)
Early myoclonic encephalopathy (EME) is a rare malignant epileptic syndrome. The erratic myoclonus with or without focal motor seizures, time of onset before 3 months of age, and suppression-burst (SB) pattern in EEG are accepted as the diagnostic criteria for EME. We report a 40-day-old infant with the diagnosis of non-ketotic hyperglycinemia (NKHG). The(More)
Molybdenum cofactor deficiency leads to combined deficiency of sulfite oxidase, xanthine dehydrogenase, and aldehyde oxidase enzyme activities. The major clinic symptom is intractable seizures seen soon after birth. No definite therapy is available. We report here a newborn with molybdenum cofactor deficiency-associated Dandy-Walker malformation who(More)
L-2-Hydroxyglutaric aciduria (L-2-HGA, MIM 236792) is a rare autosomal recessive neurodegenerative disorder characterized by psychomotor delay, cerebellar and extrapyramidal signs and subcortical leukoencephalopathy with basal ganglia and dentate nuclei involvement. Mutations in the gene L2HGDH ( C14ORF160/DURANIN/) have been identified as causative for(More)
Mitochondrial cytopathies are a group of heterogeneous disorders characterized by multisystem involvement. Renal involvement in mitochondrial cytopathies is usually manifested as tubular dysfunction owing to impaired energy metabolism; however, a few cases with glomerular changes have also been reported. Herein we report the case of a 4-month-old Turkish(More)
D-Glyceric aciduria is a disease with a very heterogeneous group of symptoms, with D-glyceric acid excretion as the chief common characteristic. Findings described in previous patients include progressive neurological impairment, hypotonia, seizures, failure to thrive and metabolic acidosis. However, there are also asymptomatic patients with mild(More)
Glycine encephalopathy is a rare autosomal recessive metabolic disease characterized by glycine accumulation in body fluids owing to a defect in the glycine cleavage system. There are several forms of glycine encephalopathy. In the classic or neonatal form, symptoms usually develop as neurologic symptoms in the first few days of life. It characteristically(More)
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