A de novo novel variant in the MT-TD gene is associated with prominent extra-neurologic manifestations.

Abstract excerpt

Defects in the mitochondrial tRNA genes cause a group of highly clinically and genetically heterogeneous disorders, which poses a challenge for clinical identification and genetic diagnosis. Here, we present a pre-school boy with a novel MT-TD variant m.7560T>C at the heteroplasmy level of 76.53% in blood, 93.34% in urine sediments, and absent in the healthy mother's blood and urine. Besides convulsions, brain...

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