The invention relates to a recombinant adeno-associated viral vector (rAAV) comprising a sequence encoding an antisense oligonucleotide (AON) directed against a segment of at least 33 bases from the +30 to +69 region of exon 53 of the pre-messenger RNA (pre-mRNA) of dystrophin, advantageously of human origin, and to the use thereof as a drug, in particular for the treatment of Duchenne muscular dystrophy (DMD).