A class of pharmaceuticals which comprises a Locked Nucleic Acid (LNA) which can be used in antisense therapy. Novel oligonucleotides have improved antisense properties. The oligonucleotides are composed of at least one LNA selected from beta-D-thio/amino-LNA or alpha-L-oxy/thio/amino-LNA. The oligonucleotides comprising LNA may also include DNA and/or RNA nucleotides.
