Rebecca Foulger Phenotypes for gene: RRM2B were changed from Required for mtDNA maintenance (Mitochondrial respiratory chain disorders (caused by nuclear variants only)); Mitochondrial Ribonucelotide Reductase subunit 2 deficiency (Disorders of purine metabolism); Disorders of mitochondrial DNA maintenance and integrity; Mitochondrial DNA depletion syndrome 8A (encephalomyopathic type with renal tubulopathy), 612075; Progressive external ophthalmoplegia with mitochondrial DNA deletions (autosomal dominant); 5,613077Mitochondrial DNA depletion syndrome 8B (MNGIE type), 612075; Mitochondrial DNA Depletion Syndrome (recessive) to Required for mtDNA maintenance (Mitochondrial respiratory chain disorders (caused by nuclear variants only)); Mitochondrial Ribonucelotide Reductase subunit 2 deficiency (Disorders of purine metabolism); Disorders of mitochondrial DNA maintenance and integrity; Mitochondrial DNA depletion syndrome 8A (encephalomyopathic type with renal tubulopathy), 612075; Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 5, 613077; Mitochondrial DNA depletion syndrome 8B (MNGIE type), 612075; Mitochondrial DNA Depletion Syndrome (recessive)