Patents by Inventor Jeffrey A. Bacha

Jeffrey A. Bacha has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230338325
    Abstract: A method for treating diffuse intrinsic pontine glioma (DIPG) including administering a therapeutically effective quantity of an alkylating hexitol alone or in combination with another antiproliferative agent, such as an inhibitor of Wee1 tyrosine kinase, is disclosed.
    Type: Application
    Filed: June 13, 2023
    Publication date: October 26, 2023
    Applicant: Del Mar Pharmaceuticals (BC) Limited
    Inventors: Anne Steinø, Jeffrey A. Bacha, Dennis M. Brown
  • Patent number: 11717505
    Abstract: Methods for treating diffuse intrinsic pontine glioma (DIPG) comprising administration of a therapeutically effective amount of an alkylating hexitol (such as dianhydrogalacitol, diacetyldianhydrogalacitol, and dibromodulcitol) are disclosed. Such methods may further comprise administration of other anti-cancer agents. In preferred embodiments, the secondary anti-cancer agent is an inhibitor of Wee1 tyrosine kinase (such as adavosertib). Methods of treating malignancies in general comprising administration of a combination of an alkylating hexitol and an inhibitor of Wee1 tyrosine kinase are also disclosed.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: August 8, 2023
    Assignee: Del Mar Pharmaceuticals (BC) Limited
    Inventors: Anne Steinø, Jeffrey A. Bacha, Dennis M. Brown
  • Patent number: 11541027
    Abstract: The use of dianhydrogalactitol provides a novel therapeutic modality for the treatment of non-small-cell lung carcinoma (NSCLC) and ovarian cancer, as well as other types of malignancy, including brain metastases of NSCLC. Dianhydrogalactitol acts as an alkylating agent on DNA that creates N7 methylation. Dianhydrogalactitol is effective in suppressing the growth of cancer stem cells and is active against tumors that are refractory to temozolomide, cisplatin, and tyrosine kinase inhibitors; the drug acts independently of the MGMT repair mechanism. Dianhydrogalactitol can be used together with other anti-neoplastic agents and can possess additive or super-additive effects.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: January 3, 2023
    Assignee: DEL MAR PHARMACEUTICALS (BC) LTD.
    Inventors: Jeffrey A. Bacha, Dennis M. Brown, Anne Steinø
  • Patent number: 11446274
    Abstract: The use of dianhydrogalactitol provides a novel therapeutic modality for the treatment of malignancies of the central nervous system in pediatric patients, including glioblastoma multiforme (GBM) high grade glioma, and medulloblastoma. Dianhydrogalactitol acts as an alkylating agent on DNA that creates N7 methylation and that can induce double-stranded breaks in DNA. Dianhydrogalactitol is effective in suppressing the growth of cancer stem cells and is active against tumors that are refractory to temozolomide, cisplatin, and tyrosine kinase inhibitors; the drug acts independently of the MGMT repair mechanism. Dianhydrogalactitol can be used together with other anti-neoplastic agents (e.g. cisplatin) and can possess additive or super-additive effects.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: September 20, 2022
    Assignee: DEL MAR PHARMACEUTICALS (BC) LTD.
    Inventors: Jeffrey A. Bacha, Dennis M. Brown, Anne Steinø
  • Publication number: 20220226277
    Abstract: Methods for treating diffuse intrinsic pontine glioma (DIPG) comprising administration of a therapeutically effective amount of an alkylating hexitol (such as dianhydrogalacitol, diacetyldianhydrogalacitol, and dibromodulcitol) are disclosed. Such methods may further comprise administration of other anti-cancer agents. In preferred embodiments, the secondary anti-cancer agent is an inhibitor of Wee1 tyrosine kinase (such as adavosertib). Methods of treating malignancies in general comprising administration of a combination of an alkylating hexitol and an inhibitor of Wee1 tyrosine kinase are also disclosed.
    Type: Application
    Filed: November 2, 2018
    Publication date: July 21, 2022
    Applicant: Del Mar Pharmaceuticals (BC) Limited
    Inventors: Anne Steinø, Jeffrey A. Bacha, Dennis M. Brown
  • Publication number: 20220193024
    Abstract: The use of dianhydrogalactitol provides a novel therapeutic modality for the treatment of glioblastoma multiforme and medulloblastoma. Dianhydrogalactitol acts as an alkylating agent on DNA that creates N7 methylation. Dianhydrogalactitol is effective in suppressing the growth of cancer stem cells and is active against tumors that are refractory to temozolomide; the drug acts independently of the MGMT repair mechanism.
    Type: Application
    Filed: March 8, 2022
    Publication date: June 23, 2022
    Applicant: Del Mar Pharmaceuticals (BC) Ltd.
    Inventors: Dennis M. Brown, Jeffrey Bacha, Sandra Dunn
  • Publication number: 20220142966
    Abstract: The use of dianhydrogalactitol provides a novel therapeutic modality for the treatment of glioblastoma multiforme and medulloblastoma. Dianhydrogalactitol acts as an alkylating agent on DNA that creates N7 methylation. Dianhydrogalactitol is effective in suppressing the growth of cancer stem cells and is active against tumors that are refractory to temozolomide; the drug acts independently of the MGMT repair mechanism.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Applicant: Del Mar Pharmaceuticals (BC) Ltd.
    Inventors: Dennis M. Brown, Jeffrey Bacha, Sandra Dunn
  • Patent number: 11234955
    Abstract: The use of dianhydrogalactitol provides a novel therapeutic modality for the treatment of glioblastoma multiforme and medulloblastoma. Dianhydrogalactitol acts as an alkylating agent on DNA that creates N7 methylation. Dianhydrogalactitol is effective in suppressing the growth of cancer stem cells and is active against tumors that are refractory to temozolomide; the drug acts independently of the MGMT repair mechanism.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: February 1, 2022
    Assignee: Del Mar Pharmaceuticals (BC) Ltd.
    Inventors: Dennis M. Brown, Jeffrey Bacha, Sandra Dunn
  • Publication number: 20210251944
    Abstract: Methods and compositions suitable for the treatment of malignancies in subjects with a germline deletion polymorphism that blocks the activity of thymidine kinase inhibitors in triggering apoptosis in tumor cells or in subjects having a mutation in or a dysregulation of the AHI-1 gene are disclosed. These methods employ an alkylating hexitol derivative such as dianhydrogalactitol, a derivative or analog of dianhydrogalactitol, diacetyldianhydrogalactitol, a derivative or analog of diacetyldianhydrogalactitol, dibromodulcitol, and a derivative or analog of dibromodulcitol. The compositions can include such alkylating hexitol derivatives. The methods can further include administration of a BH3 mimetic, and the compositions can further include a BH3 mimetic. In subjects having a dysregulation of the AHI-1 gene, the methods can further include the administration of an agent modulating the expression or activity of the AHI-1 gene or AHI-1 protein, and the compositions can further include such an agent.
    Type: Application
    Filed: February 17, 2021
    Publication date: August 19, 2021
    Applicant: Del Mar Pharmaceuticals (BC) Ltd.
    Inventors: Dennis M. Brown, Jeffrey A. Bacha, William J. Garner
  • Patent number: 11026914
    Abstract: Methods and compositions suitable for the treatment of malignancies such as recurrent glioma and progressive secondary brain tumor are disclosed. These methods employ a hexitol derivative such as dianhydrogalactitol, a derivative or analog of dianhydrogalactitol, diacetyldianhydrogalactitol, or a derivative or analog of diacetyldianhydrogalactitol. The compositions can include such hexitol derivatives.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: June 8, 2021
    Assignee: DEL MAR PHARMACEUTICALS (BC) LTD.
    Inventors: Dennis M. Brown, Kent C. Shih, Anne Steino, Richard Schwartz, Sarath Kanekal, Howard A. Burris, III, Jeffrey A. Bacha, William J. Garner, Shaun Fouse
  • Publication number: 20200062839
    Abstract: Methods and compositions employing dianhydrogalactitol or a derivative or analog of dianhydrogalactitol together with a vascular endothelial growth factor (VEGF) inhibitor or other anti-neoplastic agents can be used for treatment of glioma. In particular, methods and compositions according to the invention can decrease the invasiveness of gliomas. Further disclosed are methods of using the compositions for treating a malignancy that has failed a VEGF inhibitor treatment.
    Type: Application
    Filed: May 1, 2018
    Publication date: February 27, 2020
    Inventors: Jeffrey A. BACHA, Dennis M. BROWN, Anne STEINØ
  • Publication number: 20200061054
    Abstract: Methods and compositions employing dianhydrogalactitol or a derivative analog of dianhydrogalactitol together with a p53 modulator, a PARP inhibitor, or topoisomerase inhibitor for treatment of malignancies are provided.
    Type: Application
    Filed: February 28, 2018
    Publication date: February 27, 2020
    Applicant: Del Mar Pharmaceuticals (BC) Ltd.
    Inventors: Jeffrey A. Bacha, Dennis M. Brown, Anne Steinø, Mads Daugaard, Beibei Zhai
  • Publication number: 20190269646
    Abstract: The use of dianhydrogalactitol provides a novel therapeutic modality for the treatment of non-small-cell lung carcinoma (NSCLC) and ovarian cancer, as well as other types of malignancy, including brain metastases of NSCLC. Dianhydrogalactitol acts as an alkylating agent on DNA that creates N7 methylation. Dianhydrogalactitol is effective in suppressing the growth of cancer stem cells and is active against tumors that are refractory to temozolomide, cisplatin, and tyrosine kinase inhibitors; the drug acts independently of the MGMT repair mechanism. Dianhydrogalactitol can be used together with other anti-neoplastic agents and can possess additive or super-additive effects.
    Type: Application
    Filed: May 12, 2015
    Publication date: September 5, 2019
    Inventors: Jeffrey A. BACHA, Dennis M. BROWN, Anne STEINØ
  • Publication number: 20190183843
    Abstract: The use of dianhydrogalactitol provides a novel therapeutic modality for the treatment of malignancies of the central nervous system in pediatric patients, including glioblastoma multiforme (GBM) high grade glioma, and medulloblastoma. Dianhydrogalactitol acts as an alkylating agent on DNA that creates N7 methylation and that can induce double-stranded breaks in DNA. Dianhydrogalactitol is effective in suppressing the growth of cancer stem cells and is active against tumors that are refractory to temozolomide, cisplatin, and tyrosine kinase inhibitors; the drug acts independently of the MGMT repair mechanism. Dianhydrogalactitol can be used together with other anti-neoplastic agents (e.g. cisplatin) and can possess additive or super-additive effects.
    Type: Application
    Filed: June 15, 2017
    Publication date: June 20, 2019
    Inventors: Jeffrey A. BACHA, Dennis M. BROWN, Anne STEINØ
  • Publication number: 20190175541
    Abstract: The use of dianhydrogalactitol provides a novel therapeutic modality for the treatment of malignancies of the central nervous system in pediatric patients, including glioblastoma multiforme (GBM) high grade glioma, and medulloblastoma. Dianhydrogalactitol acts as an alkylating agent on DNA that creates N7 methylation and that can induce double-stranded breaks in DNA. Dianhydrogalactitol is effective in suppressing the growth of cancer stem cells and is active against tumors that are refractory to temozolomide, cisplatin, and tyrosine kinase inhibitors; the drug acts independently of the MGMT repair mechanism. Dianhydrogalactitol can be used together with other anti-neoplastic agents (e.g. cisplatin) and can possess additive or super-additive effects.
    Type: Application
    Filed: October 26, 2016
    Publication date: June 13, 2019
    Applicant: DelMar Pharmaceuticals, Inc.
    Inventors: Jeffrey A. Bacha, Dennis M. Brown, Anne Steinø
  • Publication number: 20190142783
    Abstract: The use of dianhydrogalactitol provides a novel therapeutic modality for the treatment of glioblastoma multiforme and medulloblastoma. Dianhydrogalactitol acts as an alkylating agent on DNA that creates N7 methylation. Dianhydrogalactitol is effective in suppressing the growth of cancer stem cells and is active against tumors that are refractory to temozolomide; the drug acts independently of the MGMT repair mechanism.
    Type: Application
    Filed: January 8, 2019
    Publication date: May 16, 2019
    Applicant: Del Mar Pharmaceuticals (BC) Ltd.
    Inventors: Dennis M. Brown, Jeffrey Bacha, Sandra Dunn
  • Publication number: 20190091195
    Abstract: Substituted hexitol derivatives such as dianhydrogalactitol are useful in the treatment of various neoplastic pathologies. Said pathologies include glioblastoma multiforme, non-small-cell lung carcinoma (NSCLC), ovarian cancer, and leptomeningeal carcinomatosis. The anti-neoplastic activity of dianhydrogalactitol is demonstrated to be due to its activity as an alkylating agent that creates N7 methylation and inter-strand DNA crosslinks. The hexitol derivatives may be used alone or in combination with other anti-neoplastic agents.
    Type: Application
    Filed: September 9, 2016
    Publication date: March 28, 2019
    Applicant: Del Mar Pharmaceuticals
    Inventors: Jeffrey A. Bacha, Beibei Zhai, Anne Steinø, Mads Daugaard
  • Patent number: 10201521
    Abstract: The use of dianhydrogalactitol provides a novel therapeutic modality for the treatment of glioblastoma multiforme and medulloblastoma. Dianhydrogalactitol acts as an alkylating agent on DNA that creates N7 methylation. Dianhydrogalactitol is effective in suppressing the growth of cancer stem cells and is active against tumors that are refractory to temozolomide; the drug acts independently of the MGMT repair mechanism.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: February 12, 2019
    Assignee: Del Mar Pharmaceuticals (BC) Ltd.
    Inventors: Dennis M. Brown, Jeffrey Bacha, Sandra Dunn
  • Publication number: 20190015379
    Abstract: The use of dianhydrogalactitol provides a novel therapeutic modality for the treatment of non-small-cell lung carcinoma (NSCLC) and for the treatment of glioblastoma multiforme (GBM). Dianhydrogalactitol acts as an alkylating agent on DNA that creates N7 methylation. Dianhydrogalactitol is effective in suppressing the growth of cancer stem cells and is active against tumors that are refractory to temozolomide; the drug acts independently of the MGMT repair mechanism.
    Type: Application
    Filed: November 10, 2015
    Publication date: January 17, 2019
    Inventors: Jeffrey A. BACHA, Dennis M. BROWN, Anne STEINØ, Shaun FOUSE
  • Publication number: 20180140571
    Abstract: The use of dianhydrogalactitol provides a novel therapeutic modality for the treatment of non-small-cell lung carcinoma (NSCLC) and ovarian cancer, as well as other types of malignancy, including brain metastases of NSCLC. Dianhydrogalactitol acts as an alkylating agent on DNA that creates N7 methylation. Dianhydrogalactitol is effective in suppressing the growth of cancer stem cells and is active against tumors that are refractory to temozolomide, cisplatin, and tyrosine kinase inhibitors; the drug acts independently of the MGMT repair mechanism. Dianhydrogalactitol can be used together with other anti-neoplastic agents and can possess additive or super-additive effects.
    Type: Application
    Filed: May 12, 2016
    Publication date: May 24, 2018
    Inventors: Jeffrey A. BACHA, Dennis M. BROWN, Anne STEINØ