The present invention is related to a nucleic acid molecule comprising a double-stranded structure, whereby the double-stranded structure comprises a first strand and a second strand, whereby the first strand comprises a first stretch of contiguous nucleotides and said first stretch is at least partially complementary to a target nucleic acid, and whereby the second strand comprises a second stretch of contiguous nucleotides and said second stretch is at least partially complementary to the first stretch, whereby the first stretch comprises a nucleic acid sequence which is at least partially complementary to a nucleotide core sequence of the nucleic acid sequence according to SEQ.ID.No. 1 (NM_013355), or part thereof whereby the nucleotide core sequence comprises the nucleotide sequence from nucleotide positions 482 to 500 of SEQ. ID.No. 1 (SEQ. ID.No. 2)； from nucleotide positions 1555 to 1573 of SEQ. ID.No. 1 (SEQ.ID.No. 4)； from nucleotide positions 1556 to 1574 of SEQ. ID.No. 1 (SEQ.ID.No. 6)； from nucleotide positions 1559 to 1577 of SEQ. ID.No. 1 (SEQ.ID.No. 8)； from nucleotide positions 1566 to 1584 of SEQ. ID.No. 1 (SEQ.ID.No. 10)； from nucleotide positions 2094 to 2112 of SEQ. ID.No. 1 (SEQ.ID.No. 12)； from nucleotide positions 2102 to 2120 of SEQ. ID.No. 1 (SEQ.ID.No. 14)； from nucleotide positions 2286 to 2304 of SEQ. ID.No. 1 (SEQ.ID.No. 16)； from nucleotide positions 2761 to 2779 of SEQ. ID.No. 1 (SEQ.ID.No. 18)； from nucleotide positions 2763 to 2781 of SEQ. ID.No. 1 (SEQ.ID.No. 20)； from nucleotide positions 2764 to 2782 of SEQ. ID.No. 1 (SEQ.ID.No. 22)； from nucleotide positions 2843 to 2861 of SEQ. ID.No. 1 (SEQ.ID.No. 24)； from nucleotide positions 2844 to 2862 of SEQ. ID.No. 1 (SEQ.ID.No. 26)； or from nucleotide positions 2846 to 2864 of SEQ. ID.No. 1 (SEQ.ID.No. 28), preferably the nucleotide core sequence comprises the nucleotide sequence from nucleotide positions 1555 to 1573 of SEQ. ID.No. 1 (SEQ.ID.No
