Abstract: Site-specific antibody-drug conjugates are described, in particular conjugates comprising an antibody which binds PSMA, and which comprises an amino acid substitution of an interchain cysteine residue by an amino acid that is not cysteine and pyrrolobenzodiazepines (PBDs) having a labile protecting group in the form of a linker. The site of conjugation, along with modification of the antiobody moiety, allows for improved safety and efficacy of the ADC.

Abstract: The present disclosure relates to humanized anti-Axl antibodies and conjugates thereof. Conjugates comprising pyrroiobenzodiazepines (PBDs) having a labile protecting group in the form of a linker to the antibody are described.

Abstract: Site-specific anti-body-drug conjugates are described, in particular conjugates comprising an antibody, which binds HER2 and comprises an amino acid substitution of an interchain cysteine residue by an amino acid that is not cysteine, and pyrrolobenzodiazepines (PBDs) having a labile protecting group in the form of a linker. The site of conjugation, along with modification of the antibody moiety, allows for improved safety and efficacy of the ADC.

Abstract: A compound which is selected from A: and salts and solvates thereof.

Abstract: Conjugates of specific PBD dimers with an antibody that binds to CD22, the antibody comprising a VH domain having the sequence according to SEQ ID NO. 1.

Abstract: Conjugates of specific PBD dimers with an antibody that that binds to CD19, the antibody comprising a VH domain having the sequence according to any one of SEQ ID NOs. 1, 2, 3, 4, 5 or 6, optionally further comprising a VL domain having the sequence according to any one of SEQ ID NOs. 7, 8, 9, 10, 11 or 12.

Abstract: Site-specific antibody-drug conjugates are described, in particular conjugates comprising an antibody, which binds CD25 and comprises an amino acid substitution of an interchain cysteine residue by an amino acid that is not cysteine, and pyrrolobenzodiazepines (PBDs) having a labile protecting group in the form of a linker. The site of conjugation, along with modification of the antibody moiety, allows for improved safety and efficacy of the ADC.

Abstract: Site-specific antibody-drug conjugates are described, in particular conjugates comprising pyrrolobenzodiazepines (PBDs) having a labile protecting group in the form of a linker. The site of conjugation, along with modification of the antibody moiety, allows for improved safety and efficacy of the ADC.

Abstract: Site-specific antibody-drug conjugates are described, in particular conjugates comprising an antibody that binds CD19 and which comprises an amino acid substitution of an interchain cysteine residue by an amino acid that is not cysteine, and pyrrolobenzodiazepines (PBDs) having a labile protecting group in the form of a linker. The site of conjugation, along with modification of the antibody moiety, allows for improved safety and efficacy of the ADC.

Abstract: Conjugates of an antibody that binds to CD19 with PBD dimers.

Abstract: Conjugates of an antibody that binds to CD25 with PBD dimers.

Abstract: Site-specific antibody-drug conjugates are described, in particular conjugates comprising pyrrolobenzodiazepines (PBDs) having a labile protecting group in the form of a linker. The site of conjugation, along with modification of the antiobody moiety, allows for improved safety and efficacy of the ADC.

Abstract: Conjugates of an isolated humanized, anti-CD22 antibody with PBD dimers.

Abstract: A compound which is either A: or B: and salts and solvates thereof, as well as their conjugates with a cell-binding agent.

Abstract: A conjugate of formula (A): Wherein Y is selected from formulae A1 and A2: Z1 is a C1-3 alkylene group; Z2 is a C1-3 alkylene group; Q is: where QX is such that Q is an amino-acid residue, a dipeptide residue or a tripeptide residue; L is a linker connected to a cell binding agent; CBA is the cell binding agent; and n is an integer between 0 and 48.

Abstract: Conjugate compounds of formula (A): wherein: R2 is ?where R36a and R36b are independently selected from H, F, C1-4 saturated alkyl, C2-3 alkenyl, which alkyl and alkenyl groups are optionally substituted by a group selected from C1-4 alkyl amido and C1-4 alkyl ester or, when one of R36a and R36b is H, the other is selected from nitrile and a C1-4 alkyl ester; R6 and R9 are independently selected from H, R, OH, OR, SH, SR, NH2, NHR, NRR?, NO2, Me3Sn and halo; R7 is independently selected from H, R, OH, OR, SH, SR, NH2, NHR, NRR?, NO2, Me3Sn and halo; Y is selected from formulae A1, A2, A3, A4, A5 and A6: L is a linker connected to a cell binding agent; CBA is the cell binding agent; n is an integer selected in the range of 0 to 48; RA4 is a C1-6 alkylene group; either (a) R10 is H, and R11 is OH, ORA, where RA is C1-4 alkyl; or (b) R10 and R11 form a nitrogen-carbon double bond between the nitrogen and carbon atoms to which they are bound; or (c) R10 is H and R11 is OSOzM, where z

Abstract: This invention relates to pyrrolobenzodiazepines (PBDs), in particular pyrrolobenzodiazepine dimers having a C2-C3 double bond and an aryl group at the C2 position in each monomer unit, and their inclusion in targeted conjugates. The differing substituent groups may offer advantages in the preparation and use of the compounds, particularly in their biological properties and the synthesis of conjugates, and the biological properties of these conjugates.

Abstract: A compound, or a pharmaceutically acceptable salt or solvate thereof, or conjugates thereof, selected from the group consisting of: wherein: (a) R10 is H, and R11 is OH, ORA, where RA is saturated C1-4 alkyl; (b) R10 and R11 form a nitrogen-carbon double bond between the nitrogen and carbon atoms to which they are bound; or (c) R10 is H and R11 is SOzM, where z is 2 or 3 and M is a monovalent pharmaceutically acceptable cation, or both M together are a divalent pharmaceutically acceptable cation.

Abstract: The invention provides anti-CD22 antibodies and immunoconjugates and methods of using the same.

Abstract: Humanized anti-Tn-MUC1 antibodies and conjugates thereof. Conjugates comprising pyrrolobenzodiazepines (PBDs) having a labile protecting group in the form of a linker to the antibody are described.