Mitochondrial Dna Depletion Syndrome 12a is related to mitochondrial dna depletion syndrome 12a , autosomal dominant and progressive external ophthalmoplegia with mitochondrial dna deletions, autosomal dominant 2. An important gene associated with Mitochondrial Dna Depletion Syndrome 12a is SLC25A4 (Solute Carrier Family 25 Member 4).