The chemical reactions and pathways resulting in the breakdown of antisense transcripts, i.e. transcripts that were produced from the antisense strand of a gene that produces a gene product and which often have a regulatory effect on the transcription of that gene product.
antisense RNA transcription +
nuclear lncRNA surveillance
nuclear mRNA surveillance +
nuclear polyadenylation-dependent CUT catabolic process
nuclear polyadenylation-dependent ncRNA catabolic process
nuclear polyadenylation-dependent rRNA catabolic process
nuclear polyadenylation-dependent snoRNA catabolic process
nuclear polyadenylation-dependent snRNA catabolic process
RNA polymerase II transcription initiation surveillance