Abstract: The invention relates to novel benzodiazepine derivatives with antiproliferative activity and more specifically to novel benzodiazepine compounds of formula (I)-(VI). The invention also provides conjugates of the benzodiazepine compounds linked to a cell-binding agent. The invention further provides compositions and methods useful for inhibiting abnormal cell growth or treating a proliferative disorder in a mammal using the compounds or conjugates of the invention.

Abstract: The invention generally relates to antibodies that bind to human folate receptor 1 and diagnostic assays for folate receptor 1-based therapies. Methods of using the antibodies to monitor therapy are further provided.

Abstract: The present invention provides improved methods for formulating therapeutic compositions comprising an antibody drug conjugate (“ADC”) that reduce potency variability between batches of ADC and provide for administration of such therapeutic compositions within a narrow intended range.

Abstract: The invention relates to novel benzodiazepine derivatives with antiproliferative activity and more specifically to novel benzodiazepine compounds of formula (I)-(VII). The invention also provides conjugates of the benzodiazepine compounds linked to a cell-binding agent. The invention further provides compositions and methods useful for inhibiting abnormal cell growth or treating a proliferative disorder in a mammal using the compounds or conjugates of the invention.

Abstract: Methods of administering immunoconjugates that bind to FOLR1 are provided. The methods comprise administering an anti-FOLR1 immunoconjugate to a person in need thereof, for example, a cancer patient, at a therapeutically effective dosing regimen that results in minimal adverse effects.

Abstract: The invention generally relates to antibodies that bind to human folate receptor and diagnostic assays for folate receptor 1-based therapies. Methods of using the antibodies to monitor therapy are further provided.

Abstract: The present invention provides improved methods for formulating therapeutic compositions comprising an antibody drug conjugate (“ADC”) that reduce potency variability between batches of ADC and provide for administration of such therapeutic compositions within a narrow intended range.

Abstract: Charged or pro-charged cross-linking moieties and conjugates of cell binding agents and drugs comprising the charged or pro-charged cross-linking moieties and method of making the same.

Abstract: The invention relates to novel cell-binding agent-cytotoxic agent conjugate having a peptide linkers and more specifically to conjugates of formula (I). The invention also provides novel cytotoxic agents of formula (II), linker compounds represented by formula (III), and drug-linker compounds represented by formula (IV). The invention further provides compositions and methods useful for inhibiting abnormal cell growth or treating a proliferative disorder in a mammal using the compounds or conjugates of the invention.

Abstract: The invention relates to novel methods of preparing cell-binding agent-cytotoxic agent conjugates, wherein the cytotoxic agent is an imine-containing cytotoxic agent bearing a maleimide group. In some embodiments, the cell-binding agent (CBA) is covalently linked to the cytotoxic agent through an engineered Cys, such as an engineered Cys in the heavy chain CH3 domain, at a position corresponds to the EU/OU numbering position 442 (or C442) on an antibody CBA. The invention also provides conjugates prepared by the methods of the present invention, compositions and methods useful for inhibiting abnormal cell growth or treating a proliferative disorder in a mammal using the conjugates of the invention.

Abstract: Novel anti-cancer agents, including, but not limited to, antibodies and immunoconjugates, that bind to human folate receptor 1 are provided. Methods of using the agents, antibodies, or immunoconjugates, such as methods of inhibiting tumor growth are further provided.

Abstract: Disclosed is a method of preparing an amino acid ester of maytansinol by reacting maytansinol with an N-carboxyanhydride of an amino acid (NCA) in the presence of a drying agent. Also disclosed is an improved method of preparing an amino acid ester of maytansinol in which a nucleophile is added to the reaction mixture after completion of the reaction between maytansinol and an N-carboxyanhydride of an amino acid.

Abstract: The present invention generally relates to antibodies, antigen-binding fragments thereof, polypeptides, and immunoconjugates that bind to CD123 antigen (the a chain of the interleukine 3 receptor, or IL-3R?). The present invention also relates to methods of using such CD123-binding molecules for diagnosing and treating diseases, such as B-cell malignancies.

Abstract: The invention provides novel methods for preparing indolinobenzodiazepine monomer compounds and their synthetic precursors.

Abstract: The invention provides a one-step process for preparing a cell-binding agent cytotoxic agent conjugate comprising contacting a cell-binding agent with a cytotoxic agent to form a first mixture comprising the cell-binding agent and the cytotoxic agent and contacting the first mixture comprising the cell-binding agent and the cytotoxic agent with a bifunctional crosslinking reagent, which provides a linker, in a solution having a pH of about 4 to about 9 to provide a second mixture comprising the cell-binding agent cytotoxic agent conjugate, wherein the cell-binding agent is chemically coupled through the linker to the cytotoxic agent, free cytotoxic agent, and reaction by-products. The second mixture is then optionally subjected to purification to provide a purified cell-binding agent cytotoxic agent conjugate.

Abstract: The present invention provides a novel process for preparing a cell-binding agent cytotoxic agent conjugate. The process comprises the steps of: (a) reacting a cytotoxic agent with a bifunctional crosslinking reagent represented by the structural formula (I) or a salt thereof, in a buffer solution comprising a buffering agent to provide a first mixture comprising a cytotoxic agent-linker compound, wherein the buffer solution has high buffer capacity; and (b) reacting the first mixture comprising the cytotoxic agent-linker compound from step (a) with a cell-binding agent in a solution having a pH of 4 to 9 to provide a second mixture comprising the cell-binding agent cytotoxic agent conjugate. The cell-binding agent cytotoxic agent conjugates prepared according to the processes described herein are also included in the present invention.

Abstract: The invention relates to novel methods for preparing indolinobenzodiazepine dimer compounds and their synthetic precursors.

Abstract: The invention provides novel methods for preparing indolinobenzodiazepine dimer compounds and their synthetic precursors.

Abstract: The invention relates to novel methods for preparing indolinobenzodiazepine dimer compounds and their synthetic precursors.

Abstract: The present invention is directed to methods of preparing a conjugate of a cell-binding agent and a drug (such as a cytotoxic compound). The methods comprise the use of an imine reactive compound to enable efficient conjugations of cytotoxic compounds with cell binding agents.