Deafness, Autosomal Recessive 70, with or Without Adult-Onset Neurodegeneration, also known as dfnb70, is related to autosomal recessive nonsyndromic deafness 70. An important gene associated with Deafness, Autosomal Recessive 70, with or Without Adult-Onset Neurodegeneration is PNPT1 (Polyribonucleotide Nucleotidyltransferase 1).