An antisense morpholino oligomer of formula: or a pharmaceutically acceptable salt thereof, where each Nu is a nucleobase which taken together forms a targeting sequence; T is selected from OH and a moiety of the formula: where each R 4 is independently C 1 -C 6 alkyl, and R 5 is selected from an electron pair and H, and R 6 is selected from OH, -N(R 7)CH 2 C NH 2, and a moiety of the formula: where: R 7 is selected from H and C 1 -C 6 alkyl, and R 8 is selected from G, -C -R 9 OH, acyl, trityl, and 4-methoxytrityl, where: R 9 is of the formula -(O-alkyl) y - wherein y is an integer from 3 to 10 and each of the y alkyl groups is independently selected from C 2 -C 6 alkyl; each instance of R 1 is -N(R 10) 2 R 11 wherein each R 10 is independently C 1 -C 6 alkyl, and R 11 is selected from an electron pair and H; R 2 is selected from H, G, acyl, trityl, 4-methoxytrityl, benzoyl, stearoyl, and a moiety of the formula: where L is selected from -C (CH 2) 6 C - and -C (CH 2) 2 S 2 (CH 2) 2 C -, and each R 12 is of the formula -(CH 2) 2 OC N(R 14) 2 wherein each R 14 is of the formula -(CH 2) 6 NHC(=NH)NH 2; and R 3 is selected from an electron pair, H, and C 1 -C 6 alkyl, wherein G is a cell penetrating peptide ("CPP") and linker moiety selected from -C (CH 2) 5 NH-CPP, -C (CH 2) 2 NH-CPP, -C (CH 2) 2 NHC (CH 2) 5 NH-CPP, and -C CH 2 NH-CPP, or G is of the formula: wherein the CPP is attached to the linker moiety by an amide bond at the CPP carboxy terminus, with the proviso that only one instance of G is present, wherein the targeting sequence is selected from: a) SEQ ID NO: 11 (TCA AGT TTT CC); b) SEQ ID NO: 12 (TCC TTT TAT TC); c) SEQ ID NO: 13 (CCA TCA AGT TT); d) SEQ ID NO: 14 (GGC AAT TCC AT); wherein X is 9, and thymine bases may be uracil bases. where each Nu is a nucleobase which taken together forms a targeting sequence; T is selected from OH and a moiety of the formula: R 7 is selected from H and C 1 -C 6 alkyl, and R 8 is selected from G, -C -R 9 OH, acyl, trityl, and 4-methoxytrityl, where: R 9 is of the formula -(O-alkyl) y - wherein y is an integer from 3 to 10 and each of the y alkyl groups is independently selected from C 2 -C 6 alkyl; each instance of R 1 is -N(R 10) 2 R 11 wherein each R 10 is independently C 1 -C 6 alkyl, and R 11 is selected from an electron pair and H; R 2 is selected from H, G, acyl, trityl, 4-methoxytrityl, benzoyl, stearoyl, and a moiety of the formula: where L is selected from -C (CH 2) 6 C - and -C (CH 2) 2 S 2 (CH 2) 2 C -, and each R 12 is of the formula -(CH 2) 2 OC N(R 14) 2 wherein each R 14 is of the formula -(CH 2) 6 NHC(=NH)NH 2; and R 3 is selected from an electron pair, H, and C 1 -C 6 alkyl, wherein G is a cell penetrating peptide ("CPP") and linker moiety selected from -C (CH 2) 5 NH-CPP, -C (CH 2) 2 NH-CPP, -C (CH 2) 2 NHC (CH 2) 5 NH-CPP, and -C CH 2 NH-CPP, or G is of the formula: wherein the CPP is attached to the linker moiety by an amide bond at the CPP carboxy terminus, with the proviso that only one instance of G is present, wherein the targeting sequence is selected from: a) SEQ ID NO: 11 (TCA AGT TTT CC); b) SEQ ID NO: 12 (TCC TTT TAT TC); c) SEQ ID NO: 13 (CCA TCA AGT TT); d) SEQ ID NO: 14 (GGC AAT TCC AT); a) SEQ ID NO: 11 (TCA AGT TTT CC); b) SEQ ID NO: 12 (TCC TTT TAT TC); c) SEQ ID NO: 13 (CCA TCA AGT TT); d) SEQ ID NO: 14 (GGC AAT TCC AT); wherein X is 9, and thymine bases may be uracil bases.