Waltham, MA, United States
Waltham, MA, United States

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Patent
ImmunoGen and Genentech | Date: 2016-06-01

The application concerns methods of treatment using anti-ErbB receptor antibody-maytansinoid conjugates, and articles of manufacture suitable for use in such methods. In particular, the invention concerns ErbB receptor-directed cancer therapies, using anti-ErbB receptor antibody-maytansinoid conjugates.


Therapeutic combinations of immunoconjugates that bind to FOLR1 (e.g., IMGN853) with anti-VEGF agents (e.g., bevacizumab), a platinum-based agent, and/or doxorubicin are provided. Methods of administering the combinations to treat cancers, e.g., ovarian cancers, with greater clinical efficacy and/or decreased toxicity are also provided.


Patent
ImmunoGen | Date: 2016-09-19

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.


The invention features methods for characterizing and treating acute myeloid leukemia (AML) (e.g., newly diagnosed, relapsed, and refractory AML) in a subject using immunoconjugates of the invention. In one aspect, the invention generally features a method of treating acute myeloid leukemia in a subject (e.g., a human), the method involving administering an effective amount of an immunoconjugate to a pre-selected subject, where the immunoconjugate contains a humanized or chimeric antibody or fragment conjugated to a cytotoxic benzodiazepine dimer compound via a cleavable disulfide linker.


Patent
ImmunoGen | Date: 2016-10-14

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.


Patent
ImmunoGen | Date: 2017-07-12

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.


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. The current invention provides a novel method for formulating a therapeutic composition comprising an antibody drug conjugate (ADC) based on drug concentration, thereby narrowing variability in potency between batches of ADC, minimizing toxicity and increasing the efficacy of drug formulated according to this method.


Patent
ImmunoGen | Date: 2017-07-26

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.


Patent
ImmunoGen | Date: 2017-07-12

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.


The present invention discloses a method for targeting maytansinoids to a selected cell population, the method comprising contacting a cell population or tissue suspected of containing the selected cell population with a cell-binding agent maytansinoid conjugate, wherein one or more maytansinoids is covalently linked to the cell-binding agent via a non-cleavable linker and the cell-binding agent binds to cells of the selected cell population.

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