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Feds aim to streamline gene therapy oversight

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Mon, 06/03/2019 - 15:01

 

A new federal oversight structure aims to smooth and speed the development of gene therapies, according to Francis S. Collins, MD, director of the National Institutes of Health, and Scott Gottlieb, MD, Food and Drug Administration commissioner.

Dr. Francis S. Collins

“As the NIH, the FDA, and research entities have moved to strengthen their individual oversight efforts, some overlaps have occurred,” Dr. Collins and Dr. Gottlieb wrote Aug. 15 in the New England Journal of Medicine. “Substantial duplication has arisen in the submission of initial protocols, annual reports, amendments, and reports of serious adverse events. Originally, these overlaps – which affect no other field in biomedical research – were viewed as harmonized reporting that enabled FDA to conduct regulatory oversight while maintaining confidentiality with sponsors and allowed NIH to provide transparency with regard to the research.”

With three approved treatments – two CAR T therapies and a treatment for a genetic retinal dystrophy – and more than 700 active investigational new drug applications in front of the FDA, “it seems reasonable to envision a day when gene therapy will be a mainstay of treatment for many diseases,” according to the editorial.

Dr. Scott Gottlieb

To remedy the situation, NIH officials Aug. 16 posted a proposed update to NIH guidance that seeks “to reduce the duplicative oversight burden by further limiting the role of NIH and RAC [Recombinant DNA Advisory Committee] in assessing gene therapy protocols and reviewing their safety information,” Dr. Collins and Dr. Gottlieb wrote. “Specifically, these proposals will eliminate RAC review and reporting requirements to the NIH for human gene therapy protocols. They will also revise the responsibility of institutional Biosafety Committees, which have local oversight for this research, making their review of human gene therapy protocols consistent with review of other research subject to the NIH Guidelines. Such streamlining will also appropriately place the focus of the NIH Guidelines squarely back on laboratory biosafety.”

RAC was originally established in 1974 to advise the NIH director on research involving manipulation of nucleic acids, but was later expanded to review and discuss protocols for gene therapy in humans.

The proposed structure provides an opportunity “to return the RAC to the spirit in which it was founded. ... The NIH envisions using the RAC as an advisory board on today’s emerging technologies, such as gene editing, synthetic biology, and neurotechnology, while harnessing the attributes that have long ensured its transparency,” they wrote.

This latest proposal follows a suite of FDA draft guidances on gene therapies issued in July that proposed new guidance on manufacturing issues, long-term follow-up, and pathways for clinical development in certain areas.

The guidance is scheduled for publication in the Federal Register on Aug. 17.

SOURCE: Collins FS and Gottlieb S. N Engl J Med. doi: 10.1056/NEJMp1810628.

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A new federal oversight structure aims to smooth and speed the development of gene therapies, according to Francis S. Collins, MD, director of the National Institutes of Health, and Scott Gottlieb, MD, Food and Drug Administration commissioner.

Dr. Francis S. Collins

“As the NIH, the FDA, and research entities have moved to strengthen their individual oversight efforts, some overlaps have occurred,” Dr. Collins and Dr. Gottlieb wrote Aug. 15 in the New England Journal of Medicine. “Substantial duplication has arisen in the submission of initial protocols, annual reports, amendments, and reports of serious adverse events. Originally, these overlaps – which affect no other field in biomedical research – were viewed as harmonized reporting that enabled FDA to conduct regulatory oversight while maintaining confidentiality with sponsors and allowed NIH to provide transparency with regard to the research.”

With three approved treatments – two CAR T therapies and a treatment for a genetic retinal dystrophy – and more than 700 active investigational new drug applications in front of the FDA, “it seems reasonable to envision a day when gene therapy will be a mainstay of treatment for many diseases,” according to the editorial.

Dr. Scott Gottlieb

To remedy the situation, NIH officials Aug. 16 posted a proposed update to NIH guidance that seeks “to reduce the duplicative oversight burden by further limiting the role of NIH and RAC [Recombinant DNA Advisory Committee] in assessing gene therapy protocols and reviewing their safety information,” Dr. Collins and Dr. Gottlieb wrote. “Specifically, these proposals will eliminate RAC review and reporting requirements to the NIH for human gene therapy protocols. They will also revise the responsibility of institutional Biosafety Committees, which have local oversight for this research, making their review of human gene therapy protocols consistent with review of other research subject to the NIH Guidelines. Such streamlining will also appropriately place the focus of the NIH Guidelines squarely back on laboratory biosafety.”

RAC was originally established in 1974 to advise the NIH director on research involving manipulation of nucleic acids, but was later expanded to review and discuss protocols for gene therapy in humans.

The proposed structure provides an opportunity “to return the RAC to the spirit in which it was founded. ... The NIH envisions using the RAC as an advisory board on today’s emerging technologies, such as gene editing, synthetic biology, and neurotechnology, while harnessing the attributes that have long ensured its transparency,” they wrote.

This latest proposal follows a suite of FDA draft guidances on gene therapies issued in July that proposed new guidance on manufacturing issues, long-term follow-up, and pathways for clinical development in certain areas.

The guidance is scheduled for publication in the Federal Register on Aug. 17.

SOURCE: Collins FS and Gottlieb S. N Engl J Med. doi: 10.1056/NEJMp1810628.

 

A new federal oversight structure aims to smooth and speed the development of gene therapies, according to Francis S. Collins, MD, director of the National Institutes of Health, and Scott Gottlieb, MD, Food and Drug Administration commissioner.

Dr. Francis S. Collins

“As the NIH, the FDA, and research entities have moved to strengthen their individual oversight efforts, some overlaps have occurred,” Dr. Collins and Dr. Gottlieb wrote Aug. 15 in the New England Journal of Medicine. “Substantial duplication has arisen in the submission of initial protocols, annual reports, amendments, and reports of serious adverse events. Originally, these overlaps – which affect no other field in biomedical research – were viewed as harmonized reporting that enabled FDA to conduct regulatory oversight while maintaining confidentiality with sponsors and allowed NIH to provide transparency with regard to the research.”

With three approved treatments – two CAR T therapies and a treatment for a genetic retinal dystrophy – and more than 700 active investigational new drug applications in front of the FDA, “it seems reasonable to envision a day when gene therapy will be a mainstay of treatment for many diseases,” according to the editorial.

Dr. Scott Gottlieb

To remedy the situation, NIH officials Aug. 16 posted a proposed update to NIH guidance that seeks “to reduce the duplicative oversight burden by further limiting the role of NIH and RAC [Recombinant DNA Advisory Committee] in assessing gene therapy protocols and reviewing their safety information,” Dr. Collins and Dr. Gottlieb wrote. “Specifically, these proposals will eliminate RAC review and reporting requirements to the NIH for human gene therapy protocols. They will also revise the responsibility of institutional Biosafety Committees, which have local oversight for this research, making their review of human gene therapy protocols consistent with review of other research subject to the NIH Guidelines. Such streamlining will also appropriately place the focus of the NIH Guidelines squarely back on laboratory biosafety.”

RAC was originally established in 1974 to advise the NIH director on research involving manipulation of nucleic acids, but was later expanded to review and discuss protocols for gene therapy in humans.

The proposed structure provides an opportunity “to return the RAC to the spirit in which it was founded. ... The NIH envisions using the RAC as an advisory board on today’s emerging technologies, such as gene editing, synthetic biology, and neurotechnology, while harnessing the attributes that have long ensured its transparency,” they wrote.

This latest proposal follows a suite of FDA draft guidances on gene therapies issued in July that proposed new guidance on manufacturing issues, long-term follow-up, and pathways for clinical development in certain areas.

The guidance is scheduled for publication in the Federal Register on Aug. 17.

SOURCE: Collins FS and Gottlieb S. N Engl J Med. doi: 10.1056/NEJMp1810628.

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Key clinical point: NIH and FDA are looking to streamline gene therapy development oversight.

Major finding: The proposal would return the function of the Recombinant DNA Advisory Committee (RAC) to a function more in line with its original mission.

Study details: Full proposal details are to be published in the Federal Register on Aug. 17.

Disclosures: The agency leaders reported no relevant disclosures in the production of the proposal.

Source: Collins FS and Gottlieb S. N Engl J Med. doi: 10.1056/NEJMp1810628.

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CAR T Therapy: From Bench to Bedside and Back

Article Type
Changed
Fri, 07/24/2020 - 08:59

Release Date: July 15, 2018
Expiration Date: July 14, 2019

Note: This activity is no longer available for credit

 

Introductory Comments: (Duration: 9 minutes)

Aaron P. Rapoport, MD
Bone Marrow Transplant Program
University of Maryland School of Medicine
Baltimore, MD

Presentation: (Duration: 39 minutes)

Carl H. June, MD
Richard W. Vague Professor in Immunotherapy
Perelman School of Medicine
University of Pennsylvania
Philadelphia, PA

Provided by:

Learning Objectives

• Review clinical data and individual case studies to determine where CAR T-cell therapy might be appropriate in the treatment of adult and pediatric patients with leukemia, lymphoma, and multiple myeloma.

• Discuss the management of cytotoxicity of CAR T-cell therapy.

Target Audience

Hematologists, oncologists, and other members of the healthcare team who treat or manage patients with hematologic malignancies.

Statement of Need

It is critical that clinicians managing patients with acute leukemia and other hematologic malignancies are cognizant of exciting breakthroughs and are also able to integrate recent progress into practice. However, given the overwhelming influx of data, it is no surprise that many hematology professionals face difficulties in identifying the most relevant findings for clinical practice. Hematologists are unable to stay abreast of the latest evidence on investigational agents. Educational programs are thus crucial to address this important professional practice gap.

Faculty

Carl H. June, MD
Richard W. Vague Professor in Immunotherapy
Perelman School of Medicine
University of Pennsylvania
Philadelphia, PA
Disclosures: Consultant: Novartis; Grant/Research support and royalties/IPR: Novartis
Stockholder: Tmunity Therapeutics, Inc.

Aaron P. Rapoport, MD
Bone Marrow Transplant Program
University of Maryland School of Medicine
Baltimore, Maryland
Disclosures: No relevant financial relationships with a commercial supporter

Permissions

  • Slide 3: Complex tumor, host and environmental factors govern the strength and timing of anti-cancer immune responses
    • Reprinted from Immunity, Vol 39/No 1, Chen DS, Mellman I, Oncology meets immunology: the cancer-immunity cycle, pp 1-10, 2013, with permission from Elsevier
  • Slide 9: Genes differentially expressed in CART19 cellular infusion products from CLL patients
    • From Fraietta JA, Lacey SF, Orlando EJ, . . . June CH, Melenhorst JJ. Determinants of response and resistance to CD19 chimeric antigen receptor (CAR) T cell therapy of chronic lymphocytic leukemia. Nat Med 2018; 24:563-571
  • Slide 10: Characterization of CLL CAR T cells in NSG CLL model
    • Same as slide 9
  • Slide 15: First adult ALL patient
  • Slide 21: Efficient trafficking of CTL019 T Cells to CNS in ALL
    • From N Engl J Med, Grupp SA, Kalos M, Barrett D, . . V. June CH, Chimeric antigen receptor-modified T cells for acute lymphoid leukemia, Volume No 368, pp 1509-1518. Copyright © 2013 Massachusetts Medical Society. Reprinted with permission from Massachusetts Medical Society.
  • Slide 26: Long-term persistence and expression of CTL019 is associated with durable remission in leukemia: Predictive Biomarker
    • From Porter DL, Hwang WT, Frey NV . . . June CH. Chimeric antigen receptor T cells persist and induce sustained remissions in relapsed refractory chronic lymphocytic leukemia. Sci Transl Med 2015; 7(303):303ra139. Reprinted with permission from AAAS.
  • Slide 28: Rapid massive expansion of clonal CART cell population in patient #10
    • Initially published in Fraietta JA, Nobles CL, Sammons MA, . . . June CH, Melenhors JJ. Disruption of TET2 promotes the therapeutic efficacy of CD19-targeted T cells. Nature 2018; 558(7709):307-312
  • Slide 29: Mapping CAR integration site in Pt #10
    • Same as slide 28.
  • Slide 31: Long-term stable persistence of TET2-deficient CAR T cells in Pt #10
    • Same as slide 28
  • Slide 32: Epigenetic and genetic changes uncovered by ATAC-seq in Pt #10
    • Same as slide 28.
  • Slide 33: TET2 knock down in healthy donor T cells
    • Same as slide 28.
  • Slide 34: TET2 knock down in healthy donor T cells
    • Same as slide 28.
  • Slide 36: CAR T for myeloma: BCMA
    • From Rickert RC, Jellusova J, Miletic AV. Signaling by the tumor necrosis factor receptor superfamily in B-cell biology and disease. Immunol Rev 2011; 244(1):115-33. Reprinted with permission from John Wiley and Sons.
  • Slide 38: CAR T for myeloma: Patient #1
  • Slide 39: Autoimmunity is the “Achilles’ Heel” of immunotherapy
    • First published in June CH, Warshauer JT, and Bluestone JA. Is autoimmunity the Achilles’ heel of cancer immunotherapy? Nat Med 2017;23(5):540-7
  • Slide 41: Multiplex CRISPR /Cas9 editing: Universal T cells TCR, HLA, PD-1, CTLA-4 and Fas
    • From Ren J, Zhang X, Liu X, Fang C, Jiang S, June CH, Zhao Y. A versatile system for rapid multiplex genome-edited CAR T cell generation. Oncotarget 2017; 8:17002-17011.
  • Slide 45: CAR T-cell trials for cancer are now global
    • From June CH, O’Connor RS, Kawalekar OU, Ghassemi S, Milone MC. CAR T cell immunotherapy for human cancer. Science 2018; 359:1361-1365. Reprinted with permission from AAAS.

Disclaimer

The content and views presented in this educational activity are those of the author and do not necessarily reflect those of Hemedicus or Frontline Medical Communications. This material is prepared based upon a review of multiple sources of information, but it is not exhaustive of the subject matter. Therefore, healthcare professionals and other individuals should review and consider other publications and materials on the subject matter before relying solely upon the information contained within this educational activity.

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Topics
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Release Date: July 15, 2018
Expiration Date: July 14, 2019

Note: This activity is no longer available for credit

 

Introductory Comments: (Duration: 9 minutes)

Aaron P. Rapoport, MD
Bone Marrow Transplant Program
University of Maryland School of Medicine
Baltimore, MD

Presentation: (Duration: 39 minutes)

Carl H. June, MD
Richard W. Vague Professor in Immunotherapy
Perelman School of Medicine
University of Pennsylvania
Philadelphia, PA

Provided by:

Learning Objectives

• Review clinical data and individual case studies to determine where CAR T-cell therapy might be appropriate in the treatment of adult and pediatric patients with leukemia, lymphoma, and multiple myeloma.

• Discuss the management of cytotoxicity of CAR T-cell therapy.

Target Audience

Hematologists, oncologists, and other members of the healthcare team who treat or manage patients with hematologic malignancies.

Statement of Need

It is critical that clinicians managing patients with acute leukemia and other hematologic malignancies are cognizant of exciting breakthroughs and are also able to integrate recent progress into practice. However, given the overwhelming influx of data, it is no surprise that many hematology professionals face difficulties in identifying the most relevant findings for clinical practice. Hematologists are unable to stay abreast of the latest evidence on investigational agents. Educational programs are thus crucial to address this important professional practice gap.

Faculty

Carl H. June, MD
Richard W. Vague Professor in Immunotherapy
Perelman School of Medicine
University of Pennsylvania
Philadelphia, PA
Disclosures: Consultant: Novartis; Grant/Research support and royalties/IPR: Novartis
Stockholder: Tmunity Therapeutics, Inc.

Aaron P. Rapoport, MD
Bone Marrow Transplant Program
University of Maryland School of Medicine
Baltimore, Maryland
Disclosures: No relevant financial relationships with a commercial supporter

Permissions

  • Slide 3: Complex tumor, host and environmental factors govern the strength and timing of anti-cancer immune responses
    • Reprinted from Immunity, Vol 39/No 1, Chen DS, Mellman I, Oncology meets immunology: the cancer-immunity cycle, pp 1-10, 2013, with permission from Elsevier
  • Slide 9: Genes differentially expressed in CART19 cellular infusion products from CLL patients
    • From Fraietta JA, Lacey SF, Orlando EJ, . . . June CH, Melenhorst JJ. Determinants of response and resistance to CD19 chimeric antigen receptor (CAR) T cell therapy of chronic lymphocytic leukemia. Nat Med 2018; 24:563-571
  • Slide 10: Characterization of CLL CAR T cells in NSG CLL model
    • Same as slide 9
  • Slide 15: First adult ALL patient
  • Slide 21: Efficient trafficking of CTL019 T Cells to CNS in ALL
    • From N Engl J Med, Grupp SA, Kalos M, Barrett D, . . V. June CH, Chimeric antigen receptor-modified T cells for acute lymphoid leukemia, Volume No 368, pp 1509-1518. Copyright © 2013 Massachusetts Medical Society. Reprinted with permission from Massachusetts Medical Society.
  • Slide 26: Long-term persistence and expression of CTL019 is associated with durable remission in leukemia: Predictive Biomarker
    • From Porter DL, Hwang WT, Frey NV . . . June CH. Chimeric antigen receptor T cells persist and induce sustained remissions in relapsed refractory chronic lymphocytic leukemia. Sci Transl Med 2015; 7(303):303ra139. Reprinted with permission from AAAS.
  • Slide 28: Rapid massive expansion of clonal CART cell population in patient #10
    • Initially published in Fraietta JA, Nobles CL, Sammons MA, . . . June CH, Melenhors JJ. Disruption of TET2 promotes the therapeutic efficacy of CD19-targeted T cells. Nature 2018; 558(7709):307-312
  • Slide 29: Mapping CAR integration site in Pt #10
    • Same as slide 28.
  • Slide 31: Long-term stable persistence of TET2-deficient CAR T cells in Pt #10
    • Same as slide 28
  • Slide 32: Epigenetic and genetic changes uncovered by ATAC-seq in Pt #10
    • Same as slide 28.
  • Slide 33: TET2 knock down in healthy donor T cells
    • Same as slide 28.
  • Slide 34: TET2 knock down in healthy donor T cells
    • Same as slide 28.
  • Slide 36: CAR T for myeloma: BCMA
    • From Rickert RC, Jellusova J, Miletic AV. Signaling by the tumor necrosis factor receptor superfamily in B-cell biology and disease. Immunol Rev 2011; 244(1):115-33. Reprinted with permission from John Wiley and Sons.
  • Slide 38: CAR T for myeloma: Patient #1
  • Slide 39: Autoimmunity is the “Achilles’ Heel” of immunotherapy
    • First published in June CH, Warshauer JT, and Bluestone JA. Is autoimmunity the Achilles’ heel of cancer immunotherapy? Nat Med 2017;23(5):540-7
  • Slide 41: Multiplex CRISPR /Cas9 editing: Universal T cells TCR, HLA, PD-1, CTLA-4 and Fas
    • From Ren J, Zhang X, Liu X, Fang C, Jiang S, June CH, Zhao Y. A versatile system for rapid multiplex genome-edited CAR T cell generation. Oncotarget 2017; 8:17002-17011.
  • Slide 45: CAR T-cell trials for cancer are now global
    • From June CH, O’Connor RS, Kawalekar OU, Ghassemi S, Milone MC. CAR T cell immunotherapy for human cancer. Science 2018; 359:1361-1365. Reprinted with permission from AAAS.

Disclaimer

The content and views presented in this educational activity are those of the author and do not necessarily reflect those of Hemedicus or Frontline Medical Communications. This material is prepared based upon a review of multiple sources of information, but it is not exhaustive of the subject matter. Therefore, healthcare professionals and other individuals should review and consider other publications and materials on the subject matter before relying solely upon the information contained within this educational activity.

Release Date: July 15, 2018
Expiration Date: July 14, 2019

Note: This activity is no longer available for credit

 

Introductory Comments: (Duration: 9 minutes)

Aaron P. Rapoport, MD
Bone Marrow Transplant Program
University of Maryland School of Medicine
Baltimore, MD

Presentation: (Duration: 39 minutes)

Carl H. June, MD
Richard W. Vague Professor in Immunotherapy
Perelman School of Medicine
University of Pennsylvania
Philadelphia, PA

Provided by:

Learning Objectives

• Review clinical data and individual case studies to determine where CAR T-cell therapy might be appropriate in the treatment of adult and pediatric patients with leukemia, lymphoma, and multiple myeloma.

• Discuss the management of cytotoxicity of CAR T-cell therapy.

Target Audience

Hematologists, oncologists, and other members of the healthcare team who treat or manage patients with hematologic malignancies.

Statement of Need

It is critical that clinicians managing patients with acute leukemia and other hematologic malignancies are cognizant of exciting breakthroughs and are also able to integrate recent progress into practice. However, given the overwhelming influx of data, it is no surprise that many hematology professionals face difficulties in identifying the most relevant findings for clinical practice. Hematologists are unable to stay abreast of the latest evidence on investigational agents. Educational programs are thus crucial to address this important professional practice gap.

Faculty

Carl H. June, MD
Richard W. Vague Professor in Immunotherapy
Perelman School of Medicine
University of Pennsylvania
Philadelphia, PA
Disclosures: Consultant: Novartis; Grant/Research support and royalties/IPR: Novartis
Stockholder: Tmunity Therapeutics, Inc.

Aaron P. Rapoport, MD
Bone Marrow Transplant Program
University of Maryland School of Medicine
Baltimore, Maryland
Disclosures: No relevant financial relationships with a commercial supporter

Permissions

  • Slide 3: Complex tumor, host and environmental factors govern the strength and timing of anti-cancer immune responses
    • Reprinted from Immunity, Vol 39/No 1, Chen DS, Mellman I, Oncology meets immunology: the cancer-immunity cycle, pp 1-10, 2013, with permission from Elsevier
  • Slide 9: Genes differentially expressed in CART19 cellular infusion products from CLL patients
    • From Fraietta JA, Lacey SF, Orlando EJ, . . . June CH, Melenhorst JJ. Determinants of response and resistance to CD19 chimeric antigen receptor (CAR) T cell therapy of chronic lymphocytic leukemia. Nat Med 2018; 24:563-571
  • Slide 10: Characterization of CLL CAR T cells in NSG CLL model
    • Same as slide 9
  • Slide 15: First adult ALL patient
  • Slide 21: Efficient trafficking of CTL019 T Cells to CNS in ALL
    • From N Engl J Med, Grupp SA, Kalos M, Barrett D, . . V. June CH, Chimeric antigen receptor-modified T cells for acute lymphoid leukemia, Volume No 368, pp 1509-1518. Copyright © 2013 Massachusetts Medical Society. Reprinted with permission from Massachusetts Medical Society.
  • Slide 26: Long-term persistence and expression of CTL019 is associated with durable remission in leukemia: Predictive Biomarker
    • From Porter DL, Hwang WT, Frey NV . . . June CH. Chimeric antigen receptor T cells persist and induce sustained remissions in relapsed refractory chronic lymphocytic leukemia. Sci Transl Med 2015; 7(303):303ra139. Reprinted with permission from AAAS.
  • Slide 28: Rapid massive expansion of clonal CART cell population in patient #10
    • Initially published in Fraietta JA, Nobles CL, Sammons MA, . . . June CH, Melenhors JJ. Disruption of TET2 promotes the therapeutic efficacy of CD19-targeted T cells. Nature 2018; 558(7709):307-312
  • Slide 29: Mapping CAR integration site in Pt #10
    • Same as slide 28.
  • Slide 31: Long-term stable persistence of TET2-deficient CAR T cells in Pt #10
    • Same as slide 28
  • Slide 32: Epigenetic and genetic changes uncovered by ATAC-seq in Pt #10
    • Same as slide 28.
  • Slide 33: TET2 knock down in healthy donor T cells
    • Same as slide 28.
  • Slide 34: TET2 knock down in healthy donor T cells
    • Same as slide 28.
  • Slide 36: CAR T for myeloma: BCMA
    • From Rickert RC, Jellusova J, Miletic AV. Signaling by the tumor necrosis factor receptor superfamily in B-cell biology and disease. Immunol Rev 2011; 244(1):115-33. Reprinted with permission from John Wiley and Sons.
  • Slide 38: CAR T for myeloma: Patient #1
  • Slide 39: Autoimmunity is the “Achilles’ Heel” of immunotherapy
    • First published in June CH, Warshauer JT, and Bluestone JA. Is autoimmunity the Achilles’ heel of cancer immunotherapy? Nat Med 2017;23(5):540-7
  • Slide 41: Multiplex CRISPR /Cas9 editing: Universal T cells TCR, HLA, PD-1, CTLA-4 and Fas
    • From Ren J, Zhang X, Liu X, Fang C, Jiang S, June CH, Zhao Y. A versatile system for rapid multiplex genome-edited CAR T cell generation. Oncotarget 2017; 8:17002-17011.
  • Slide 45: CAR T-cell trials for cancer are now global
    • From June CH, O’Connor RS, Kawalekar OU, Ghassemi S, Milone MC. CAR T cell immunotherapy for human cancer. Science 2018; 359:1361-1365. Reprinted with permission from AAAS.

Disclaimer

The content and views presented in this educational activity are those of the author and do not necessarily reflect those of Hemedicus or Frontline Medical Communications. This material is prepared based upon a review of multiple sources of information, but it is not exhaustive of the subject matter. Therefore, healthcare professionals and other individuals should review and consider other publications and materials on the subject matter before relying solely upon the information contained within this educational activity.

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CMS proposes inpatient payment model for CAR T therapies

Article Type
Changed
Wed, 03/27/2019 - 11:43

 

Physicians may finally have some clarity on payment for inpatient administration of two chimeric antigen receptor–T-cell therapies if a proposed rule from the Centers of Medicare & Medicaid Services becomes final.

The agency is seeking to assign ICD-10-PCS codes XW033C3 and XW043C3 to the use of axicabtagene ciloleucel (Yescarta) and tisagenlecleucel (Kymriah) in the inpatient setting for fiscal year 2019. The agency is also considering the creation of a new Medicare Severity–Diagnosis Related Group (MS-DRG) code for procedures involving the use of chimeric antigen receptor (CAR) T-cell therapy drugs. The proposal was published in May in the Federal Register.

The proposal demonstrates that CMS is listening to physicians’ concerns about CAR T payments and working to provide a more reasonable framework, said Stephanie Farnia, director of health policy and strategic relations for the American Society for Blood and Marrow Transplantation.

“The primary point of significance is that CAR-T care episodes should be assigned to a specific MS-DRG in FY2019, which will give physicians a clearer sense of inpatient reimbursement in advance,” she said in an interview.



Uncertainty about inpatient payment for administration of the two approved CAR-T therapies have been a lingering concern of specialists using, or interested in using, the therapies. In April 2018, CMS announced payment rates for outpatient administration of the two drugs, settling on $395,380 for axicabtagene ciloleucel and $500,839 for tisagenlecleucel. The two medications have list prices of $373,000 and $475,000, respectively.

However, physicians noted that even if the drugs are first administered in the outpatient setting, inpatient care is likely to occur with CAR T-cell therapies because some patients will need to be admitted in order to be monitored for serious side effects. In such cases, all payments will become part of the inpatient stay per CMS’ 3-day payment window rule.

In outlining the most recent payment proposal, CMS stated that its clinical advisers believe that patients receiving treatment with CAR T-cell therapy would have similar clinical characteristics and comorbidities as patients treated with autologous bone marrow transplant therapy, who are currently assigned to MS-DRG 016 “Autologous Bone Marrow Transplant with CC/MCC”. Therefore, CMS officials said they are suggesting ICD-10-PCS procedure codes XW033C3 and XW043C3 to pre-MDC MS-DRG 016. Additionally, the agency is proposing to revise the title of MS-DRG 016 from “Autologous Bone Marrow Transplant with CC/MCC” to “Autologous Bone Marrow Transplant with CC/MCC or T-cell Immunotherapy.”

 

 


However, the agency emphasized that it invites public comment on alternative payment approaches for CAR T-cell therapies in the context of the pending, new technology add-on payment applications by the CAR-T drugmakers Novartis Pharmaceuticals and Kite Pharma. If approved in the final rule, the technology add-on payments would provide an additional and separate payment equivalent to up to 50% of the product cost plus the MS-DRG payment received for the episode of care.

Other items in the proposed rule include approximate base payments for hematopoietic stem cell transplantation for fiscal 2019, which starts Oct. 1, 2018. The approximate per unit payment is $5,498, which translates to a total base payment of $64,790 for allogeneic bone marrow transplant (MS-DRG 014) for instance. In an American Society for Blood and Marrow Transplantation blog, Ms. Farnia outlined the approximate base weights and estimated reimbursements calculated from the rule.

CMS did not make any changes to the payment model for allogeneic hematopoietic cell transplantation despite continued requests by physicians for donor acquisition charges. Ms. Farnia encourages doctors to express to CMS the importance of such reimbursement during the comment period.

Public comments on the inpatient payment proposal are due by June 25, 2018, and can be submitted at https://www.regulations.gov. Additionally, CMS will convene a meeting of the Medicare Evidence Development & Coverage Advisory Committee on August 22, 2018, to consider whether to issue a national coverage policy for CAR T-cell therapies that would set consistent parameters for patient access.

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Physicians may finally have some clarity on payment for inpatient administration of two chimeric antigen receptor–T-cell therapies if a proposed rule from the Centers of Medicare & Medicaid Services becomes final.

The agency is seeking to assign ICD-10-PCS codes XW033C3 and XW043C3 to the use of axicabtagene ciloleucel (Yescarta) and tisagenlecleucel (Kymriah) in the inpatient setting for fiscal year 2019. The agency is also considering the creation of a new Medicare Severity–Diagnosis Related Group (MS-DRG) code for procedures involving the use of chimeric antigen receptor (CAR) T-cell therapy drugs. The proposal was published in May in the Federal Register.

The proposal demonstrates that CMS is listening to physicians’ concerns about CAR T payments and working to provide a more reasonable framework, said Stephanie Farnia, director of health policy and strategic relations for the American Society for Blood and Marrow Transplantation.

“The primary point of significance is that CAR-T care episodes should be assigned to a specific MS-DRG in FY2019, which will give physicians a clearer sense of inpatient reimbursement in advance,” she said in an interview.



Uncertainty about inpatient payment for administration of the two approved CAR-T therapies have been a lingering concern of specialists using, or interested in using, the therapies. In April 2018, CMS announced payment rates for outpatient administration of the two drugs, settling on $395,380 for axicabtagene ciloleucel and $500,839 for tisagenlecleucel. The two medications have list prices of $373,000 and $475,000, respectively.

However, physicians noted that even if the drugs are first administered in the outpatient setting, inpatient care is likely to occur with CAR T-cell therapies because some patients will need to be admitted in order to be monitored for serious side effects. In such cases, all payments will become part of the inpatient stay per CMS’ 3-day payment window rule.

In outlining the most recent payment proposal, CMS stated that its clinical advisers believe that patients receiving treatment with CAR T-cell therapy would have similar clinical characteristics and comorbidities as patients treated with autologous bone marrow transplant therapy, who are currently assigned to MS-DRG 016 “Autologous Bone Marrow Transplant with CC/MCC”. Therefore, CMS officials said they are suggesting ICD-10-PCS procedure codes XW033C3 and XW043C3 to pre-MDC MS-DRG 016. Additionally, the agency is proposing to revise the title of MS-DRG 016 from “Autologous Bone Marrow Transplant with CC/MCC” to “Autologous Bone Marrow Transplant with CC/MCC or T-cell Immunotherapy.”

 

 


However, the agency emphasized that it invites public comment on alternative payment approaches for CAR T-cell therapies in the context of the pending, new technology add-on payment applications by the CAR-T drugmakers Novartis Pharmaceuticals and Kite Pharma. If approved in the final rule, the technology add-on payments would provide an additional and separate payment equivalent to up to 50% of the product cost plus the MS-DRG payment received for the episode of care.

Other items in the proposed rule include approximate base payments for hematopoietic stem cell transplantation for fiscal 2019, which starts Oct. 1, 2018. The approximate per unit payment is $5,498, which translates to a total base payment of $64,790 for allogeneic bone marrow transplant (MS-DRG 014) for instance. In an American Society for Blood and Marrow Transplantation blog, Ms. Farnia outlined the approximate base weights and estimated reimbursements calculated from the rule.

CMS did not make any changes to the payment model for allogeneic hematopoietic cell transplantation despite continued requests by physicians for donor acquisition charges. Ms. Farnia encourages doctors to express to CMS the importance of such reimbursement during the comment period.

Public comments on the inpatient payment proposal are due by June 25, 2018, and can be submitted at https://www.regulations.gov. Additionally, CMS will convene a meeting of the Medicare Evidence Development & Coverage Advisory Committee on August 22, 2018, to consider whether to issue a national coverage policy for CAR T-cell therapies that would set consistent parameters for patient access.

 

Physicians may finally have some clarity on payment for inpatient administration of two chimeric antigen receptor–T-cell therapies if a proposed rule from the Centers of Medicare & Medicaid Services becomes final.

The agency is seeking to assign ICD-10-PCS codes XW033C3 and XW043C3 to the use of axicabtagene ciloleucel (Yescarta) and tisagenlecleucel (Kymriah) in the inpatient setting for fiscal year 2019. The agency is also considering the creation of a new Medicare Severity–Diagnosis Related Group (MS-DRG) code for procedures involving the use of chimeric antigen receptor (CAR) T-cell therapy drugs. The proposal was published in May in the Federal Register.

The proposal demonstrates that CMS is listening to physicians’ concerns about CAR T payments and working to provide a more reasonable framework, said Stephanie Farnia, director of health policy and strategic relations for the American Society for Blood and Marrow Transplantation.

“The primary point of significance is that CAR-T care episodes should be assigned to a specific MS-DRG in FY2019, which will give physicians a clearer sense of inpatient reimbursement in advance,” she said in an interview.



Uncertainty about inpatient payment for administration of the two approved CAR-T therapies have been a lingering concern of specialists using, or interested in using, the therapies. In April 2018, CMS announced payment rates for outpatient administration of the two drugs, settling on $395,380 for axicabtagene ciloleucel and $500,839 for tisagenlecleucel. The two medications have list prices of $373,000 and $475,000, respectively.

However, physicians noted that even if the drugs are first administered in the outpatient setting, inpatient care is likely to occur with CAR T-cell therapies because some patients will need to be admitted in order to be monitored for serious side effects. In such cases, all payments will become part of the inpatient stay per CMS’ 3-day payment window rule.

In outlining the most recent payment proposal, CMS stated that its clinical advisers believe that patients receiving treatment with CAR T-cell therapy would have similar clinical characteristics and comorbidities as patients treated with autologous bone marrow transplant therapy, who are currently assigned to MS-DRG 016 “Autologous Bone Marrow Transplant with CC/MCC”. Therefore, CMS officials said they are suggesting ICD-10-PCS procedure codes XW033C3 and XW043C3 to pre-MDC MS-DRG 016. Additionally, the agency is proposing to revise the title of MS-DRG 016 from “Autologous Bone Marrow Transplant with CC/MCC” to “Autologous Bone Marrow Transplant with CC/MCC or T-cell Immunotherapy.”

 

 


However, the agency emphasized that it invites public comment on alternative payment approaches for CAR T-cell therapies in the context of the pending, new technology add-on payment applications by the CAR-T drugmakers Novartis Pharmaceuticals and Kite Pharma. If approved in the final rule, the technology add-on payments would provide an additional and separate payment equivalent to up to 50% of the product cost plus the MS-DRG payment received for the episode of care.

Other items in the proposed rule include approximate base payments for hematopoietic stem cell transplantation for fiscal 2019, which starts Oct. 1, 2018. The approximate per unit payment is $5,498, which translates to a total base payment of $64,790 for allogeneic bone marrow transplant (MS-DRG 014) for instance. In an American Society for Blood and Marrow Transplantation blog, Ms. Farnia outlined the approximate base weights and estimated reimbursements calculated from the rule.

CMS did not make any changes to the payment model for allogeneic hematopoietic cell transplantation despite continued requests by physicians for donor acquisition charges. Ms. Farnia encourages doctors to express to CMS the importance of such reimbursement during the comment period.

Public comments on the inpatient payment proposal are due by June 25, 2018, and can be submitted at https://www.regulations.gov. Additionally, CMS will convene a meeting of the Medicare Evidence Development & Coverage Advisory Committee on August 22, 2018, to consider whether to issue a national coverage policy for CAR T-cell therapies that would set consistent parameters for patient access.

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Simplified HCT-CI better predicts outcomes in young patients

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– A revised hematopoietic stem cell transplantation comorbidity index developed for adolescents and young adults is useful for predicting nonrelapse mortality in this specific population, according to Brian Friend, MD.

In a retrospective study of 241 patients aged 15-39 years who underwent a first allogeneic hematopoietic stem cell transplant (HCT) between 2005 and 2015 at the University of California, Los Angeles, nonrelapse mortality incidence was particularly high, with rates of 26%, 28%, and 30% at 1, 2, and 3 years, respectively, Dr. Friend, a clinical research fellow at the David Geffen School of Medicine, Los Angeles, reported in a poster at the Acute Leukemia Forum of Hemedicus.

Sharon Worcester/MDedge News
Dr. Brian Friend
Notably, 60% of the comorbidities included in the commonly used HCT–Comorbidity Index (HCT-CI) did not have significant prevalence in these patients, and the index did not appear useful for predicting overall survival or nonrelapse mortality, he said in an interview.

Rather, a history of pulmonary disease – found in 44% of the patients – was the most common comorbidity, and although this was based on pulmonary function tests alone and not necessarily on patient symptoms, it was a surprising finding, he said. It was associated with lower overall survival and with nonrelapse mortality, he added.

A psychosocial component, which took into account factors such as stressors, social support, financial issues, and substance abuse, was also fairly frequent in the patients, but was not necessarily associated with worse outcomes, he noted.

“In multivariable analysis, only a history of prior malignancy (hazard ratio, 2.04) and moderate and severe pulmonary disease (hazard ratios, 1.39 and 1.84, respectively) were associated with a higher incidence of nonrelapse mortality,” he reported.

The existing HCT-CI was developed in adults to help risk-stratify patients undergoing transplant, but adolescents and young adults undergoing HCT tend to have fewer comorbidities compared with older adults, though they still having a significant nonrelapse mortality rate, Dr. Friend said.

 

 


“We sought to develop a modified HCT-CI that would be more practical and efficient in predicting outcomes of adolescent and young adult patients,” he wrote.

Data were collected on 15 comorbidities included in the original HCT-CI study, as well as the psychosocial risk factors. The relationship between multiple variables and the incidence of nonrelapse mortality was investigated via the Fine and Gray competing risk model with adjustments for patient- and transplant-specific factors.



A few things were “looked at differently,” he said, explaining, for example, that multiple cardiovascular risk factors were combined into one since they are rare in younger patients.

The study demonstrated that an index including only a few comorbidities important in adolescents and young adults is more predictive in these younger patients vs. adults, suggesting that a simpler model is more practical and useful, Dr. Friend said.

 

 


A larger study is planned in conjunction with the Center for International Blood and Marrow Transplant Research (CIBMTR). The researchers for that study will take an in-depth look at this younger population in an effort to develop a novel risk score for them. Other future efforts will focus on developing interventions to target high risk patients – and in particular, modifiable risk factors – with a focus on preventive measures, he said.

Dr. Friend reported having no financial disclosures.

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– A revised hematopoietic stem cell transplantation comorbidity index developed for adolescents and young adults is useful for predicting nonrelapse mortality in this specific population, according to Brian Friend, MD.

In a retrospective study of 241 patients aged 15-39 years who underwent a first allogeneic hematopoietic stem cell transplant (HCT) between 2005 and 2015 at the University of California, Los Angeles, nonrelapse mortality incidence was particularly high, with rates of 26%, 28%, and 30% at 1, 2, and 3 years, respectively, Dr. Friend, a clinical research fellow at the David Geffen School of Medicine, Los Angeles, reported in a poster at the Acute Leukemia Forum of Hemedicus.

Sharon Worcester/MDedge News
Dr. Brian Friend
Notably, 60% of the comorbidities included in the commonly used HCT–Comorbidity Index (HCT-CI) did not have significant prevalence in these patients, and the index did not appear useful for predicting overall survival or nonrelapse mortality, he said in an interview.

Rather, a history of pulmonary disease – found in 44% of the patients – was the most common comorbidity, and although this was based on pulmonary function tests alone and not necessarily on patient symptoms, it was a surprising finding, he said. It was associated with lower overall survival and with nonrelapse mortality, he added.

A psychosocial component, which took into account factors such as stressors, social support, financial issues, and substance abuse, was also fairly frequent in the patients, but was not necessarily associated with worse outcomes, he noted.

“In multivariable analysis, only a history of prior malignancy (hazard ratio, 2.04) and moderate and severe pulmonary disease (hazard ratios, 1.39 and 1.84, respectively) were associated with a higher incidence of nonrelapse mortality,” he reported.

The existing HCT-CI was developed in adults to help risk-stratify patients undergoing transplant, but adolescents and young adults undergoing HCT tend to have fewer comorbidities compared with older adults, though they still having a significant nonrelapse mortality rate, Dr. Friend said.

 

 


“We sought to develop a modified HCT-CI that would be more practical and efficient in predicting outcomes of adolescent and young adult patients,” he wrote.

Data were collected on 15 comorbidities included in the original HCT-CI study, as well as the psychosocial risk factors. The relationship between multiple variables and the incidence of nonrelapse mortality was investigated via the Fine and Gray competing risk model with adjustments for patient- and transplant-specific factors.



A few things were “looked at differently,” he said, explaining, for example, that multiple cardiovascular risk factors were combined into one since they are rare in younger patients.

The study demonstrated that an index including only a few comorbidities important in adolescents and young adults is more predictive in these younger patients vs. adults, suggesting that a simpler model is more practical and useful, Dr. Friend said.

 

 


A larger study is planned in conjunction with the Center for International Blood and Marrow Transplant Research (CIBMTR). The researchers for that study will take an in-depth look at this younger population in an effort to develop a novel risk score for them. Other future efforts will focus on developing interventions to target high risk patients – and in particular, modifiable risk factors – with a focus on preventive measures, he said.

Dr. Friend reported having no financial disclosures.

 

– A revised hematopoietic stem cell transplantation comorbidity index developed for adolescents and young adults is useful for predicting nonrelapse mortality in this specific population, according to Brian Friend, MD.

In a retrospective study of 241 patients aged 15-39 years who underwent a first allogeneic hematopoietic stem cell transplant (HCT) between 2005 and 2015 at the University of California, Los Angeles, nonrelapse mortality incidence was particularly high, with rates of 26%, 28%, and 30% at 1, 2, and 3 years, respectively, Dr. Friend, a clinical research fellow at the David Geffen School of Medicine, Los Angeles, reported in a poster at the Acute Leukemia Forum of Hemedicus.

Sharon Worcester/MDedge News
Dr. Brian Friend
Notably, 60% of the comorbidities included in the commonly used HCT–Comorbidity Index (HCT-CI) did not have significant prevalence in these patients, and the index did not appear useful for predicting overall survival or nonrelapse mortality, he said in an interview.

Rather, a history of pulmonary disease – found in 44% of the patients – was the most common comorbidity, and although this was based on pulmonary function tests alone and not necessarily on patient symptoms, it was a surprising finding, he said. It was associated with lower overall survival and with nonrelapse mortality, he added.

A psychosocial component, which took into account factors such as stressors, social support, financial issues, and substance abuse, was also fairly frequent in the patients, but was not necessarily associated with worse outcomes, he noted.

“In multivariable analysis, only a history of prior malignancy (hazard ratio, 2.04) and moderate and severe pulmonary disease (hazard ratios, 1.39 and 1.84, respectively) were associated with a higher incidence of nonrelapse mortality,” he reported.

The existing HCT-CI was developed in adults to help risk-stratify patients undergoing transplant, but adolescents and young adults undergoing HCT tend to have fewer comorbidities compared with older adults, though they still having a significant nonrelapse mortality rate, Dr. Friend said.

 

 


“We sought to develop a modified HCT-CI that would be more practical and efficient in predicting outcomes of adolescent and young adult patients,” he wrote.

Data were collected on 15 comorbidities included in the original HCT-CI study, as well as the psychosocial risk factors. The relationship between multiple variables and the incidence of nonrelapse mortality was investigated via the Fine and Gray competing risk model with adjustments for patient- and transplant-specific factors.



A few things were “looked at differently,” he said, explaining, for example, that multiple cardiovascular risk factors were combined into one since they are rare in younger patients.

The study demonstrated that an index including only a few comorbidities important in adolescents and young adults is more predictive in these younger patients vs. adults, suggesting that a simpler model is more practical and useful, Dr. Friend said.

 

 


A larger study is planned in conjunction with the Center for International Blood and Marrow Transplant Research (CIBMTR). The researchers for that study will take an in-depth look at this younger population in an effort to develop a novel risk score for them. Other future efforts will focus on developing interventions to target high risk patients – and in particular, modifiable risk factors – with a focus on preventive measures, he said.

Dr. Friend reported having no financial disclosures.

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REPORTING FROM ALF 2018

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Key clinical point: A simplified HCT-CI is more practical and useful for predicting HCT outcomes in younger patients.

Major finding: As many as 60% of the comorbidities included in the HCT-CI had no significant prevalence in young patients.

Study details: A retrospective study of 241 adolescents and young adults.

Disclosures: Dr. Friend reported having no financial disclosures.

Source: Friend B et al. ALF 2018, Poster Session.

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Genetic markers may help predict allogeneic SCT outcomes

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– The presence of p2X7 receptor single nucleotide polymorphisms (SNPs) associated with gain and loss of function may help predict outcomes after allogeneic stem cell transplantation, according to findings from a clinical correlate analysis of recipient and donor DNA samples.

The findings require validation in future studies, but suggest that the presence of the SNPs and p2X7 haplotypes 2 and 4 could be incorporated into disease risk models to improve transplant decision making, David Stuart Ritchie, MD, reported at the combined annual meetings of the Center for International Blood & Marrow Transplant Research and the American Society for Blood and Marrow Transplantation.

The analysis, which specifically looked for the presence of 16 previously identified SNPs and the haplotypes 2 and 4 in p2x7, was performed on pretransplant DNA samples from 333 allogeneic stem cell transplant recipients and 228 donors at a single center between 2002 and 2013. The findings were correlated with patient outcomes.

Five SNPs were excluded from correlation because of low frequency, and of the 11 remaining SNPs, 3 were found to be significantly associated with reduced incidence of acute and/or chronic graft-versus-host disease (GVHD), and 2 were significantly associated with increased relapse or transplant-related mortality, said Dr. Ritchie of the University of Melbourne, Parkville, Australia.

The loss-of-function SNPs rs28360457 and rs3751133 – each linked with decreased inflammation – were significantly associated with a reduced incidence of acute GVHD when comparing grade 0 with grades 1-4 GVHD (P = .0234 and P = .0411, respectively), but not when comparing grades 0-1 and grades 2-4 GVHD.

SNP rs3751133 was also significantly associated with reduced incidence of chronic GVHD when comparing grade 0 with grades 0-4 GVHD (P = .01), but not when comparing grades 0-1 and grades 2-4 GVHD, he said.

The loss-of-function SNP rs1653624 – which is linked with decreased phagocytosis – was associated with an increased incidence of acute GVHD when comparing grade 0 vs. grade 1-4 GVHD (P = .01), but not when comparing grades 0-1 and grades 2-4 GVHD (P = NS).

 

 


SNP rs7958311, which had increased surface expression, was associated with a trend toward increased relapse risk (P = .053), and the loss-of-function SNP rs1653624 was associated with an excess of early transplant-related mortality (P = .0471).

“Individual SNPs are interesting, but perhaps more interesting are the haplotypes,” Dr. Ritchie said.

Sharon Worcester/MDedge News
Dr. David Stuart Ritchie
Haplotype 2, which was found in 46 of the 333 allogeneic stem cell transplant recipients, involves gain-of-function rs178119 alone.

Haplotype 4, which was found in 8 recipients, involves rs1718119 and rs7958311. Those SNPs were previously shown to have 300% and 195% increased expression, respectively, with or without rs2230912, which has been shown to be decreased by 72%, and with or without loss of function rs1653624. Haplotype 4 is associated with a net increase in p2X7 activity, he explained.
 

 


In the current study, haplotype 4 was only found to involve rs1718119 co-inherited with rs2230912, and was associated with substantially decreased relapse-free survival overall (hazard ratio, 0.6946), when compared with haplotype 2 (HR, 0.2078), he said.

The differences between haplotype 4 and haplotype 2, and between haplotype 4 and patients with neither haplotype, were highly statistically significant.

Relapse-free survival did not differ significantly between those with haplotype 2 and those with neither haplotype (HR, 0.7717). Similarly, overall survival was significantly poorer among those with haplotype 4 versus haplotype 2 or no haplotype (HR, 0.2812 and 0.2882, respectively), but no difference was seen in overall survival between those with haplotype 2 and those with no haplotype (HR, 1.003), he said.

P2X7 is a purinergic signaling receptor located at chromosome 12q24–a region associated with inflammatory disorders. It plays an important role in immunogenic cell death. It is expressed in all leukocytes, with the highest level of expression seen in monocyte lineage. Binding of its ligand – extracellular adenosine 5’-triphosphate – leads to activation of dendritic cells and release of IL1b leading to T cell recruitment and the production of memory T cells.
 

 


Both gain- and loss-of-function SNPs in p2X7 have been reported and implicated in GVHD and other inflammatory disorders, Dr. Ritchie said, explaining the rationale for studying their correlations with outcomes after allogeneic stem cell transplantation.

While such transplants are highly effective for treating hematologic malignancies, outcomes can be adversely affected by infection, acute organ dysfunction, and GVHD. Pretransplant conditioning regimens are associated with high levels of immunogenic cell death and the release of extracellular adenosine 5’-triphosphate, therefore signaling through the p2X7 receptor may lead to activation of downstream effectors that influence transplant outcome, he noted.

“We hypothesized that germline gain or loss of function polymorphisms in this receptor in recipients of allogeneic transplantation would result in an adverse outcome,” he said.

The mean age of the recipients whose samples were analyzed was 46 years, and about half were women. Most (83.8%) had a peripheral blood graft source and 64% of transplants were from related donors. The nonrelapse mortality at 24 months was 12.98%, Dr. Ritchie said, noting that their indications for transplantation were “fairly representative of the adult transplant population, dominated by acute leukemia with a range of other acute conditions.”
 

 


The findings – particularly those with respect to haplotype 4, which had the most substantial impact – could play a role in patient risk assessment.

“Potentially, although it is a relatively uncommon haplotype, pretransplant identification of haplotype 4 may well have implications for transplant decision making, given the fact that the majority of our patients with this haplotype did not survive posttransplant,” he concluded, noting that an effort to validate the findings is ongoing in an additional 300 patients.

Dr. Ritchie reported having no financial disclosures.

SOURCE: Koldej R et al. The 2018 BMT Tandem Meetings, Abstract 22.

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– The presence of p2X7 receptor single nucleotide polymorphisms (SNPs) associated with gain and loss of function may help predict outcomes after allogeneic stem cell transplantation, according to findings from a clinical correlate analysis of recipient and donor DNA samples.

The findings require validation in future studies, but suggest that the presence of the SNPs and p2X7 haplotypes 2 and 4 could be incorporated into disease risk models to improve transplant decision making, David Stuart Ritchie, MD, reported at the combined annual meetings of the Center for International Blood & Marrow Transplant Research and the American Society for Blood and Marrow Transplantation.

The analysis, which specifically looked for the presence of 16 previously identified SNPs and the haplotypes 2 and 4 in p2x7, was performed on pretransplant DNA samples from 333 allogeneic stem cell transplant recipients and 228 donors at a single center between 2002 and 2013. The findings were correlated with patient outcomes.

Five SNPs were excluded from correlation because of low frequency, and of the 11 remaining SNPs, 3 were found to be significantly associated with reduced incidence of acute and/or chronic graft-versus-host disease (GVHD), and 2 were significantly associated with increased relapse or transplant-related mortality, said Dr. Ritchie of the University of Melbourne, Parkville, Australia.

The loss-of-function SNPs rs28360457 and rs3751133 – each linked with decreased inflammation – were significantly associated with a reduced incidence of acute GVHD when comparing grade 0 with grades 1-4 GVHD (P = .0234 and P = .0411, respectively), but not when comparing grades 0-1 and grades 2-4 GVHD.

SNP rs3751133 was also significantly associated with reduced incidence of chronic GVHD when comparing grade 0 with grades 0-4 GVHD (P = .01), but not when comparing grades 0-1 and grades 2-4 GVHD, he said.

The loss-of-function SNP rs1653624 – which is linked with decreased phagocytosis – was associated with an increased incidence of acute GVHD when comparing grade 0 vs. grade 1-4 GVHD (P = .01), but not when comparing grades 0-1 and grades 2-4 GVHD (P = NS).

 

 


SNP rs7958311, which had increased surface expression, was associated with a trend toward increased relapse risk (P = .053), and the loss-of-function SNP rs1653624 was associated with an excess of early transplant-related mortality (P = .0471).

“Individual SNPs are interesting, but perhaps more interesting are the haplotypes,” Dr. Ritchie said.

Sharon Worcester/MDedge News
Dr. David Stuart Ritchie
Haplotype 2, which was found in 46 of the 333 allogeneic stem cell transplant recipients, involves gain-of-function rs178119 alone.

Haplotype 4, which was found in 8 recipients, involves rs1718119 and rs7958311. Those SNPs were previously shown to have 300% and 195% increased expression, respectively, with or without rs2230912, which has been shown to be decreased by 72%, and with or without loss of function rs1653624. Haplotype 4 is associated with a net increase in p2X7 activity, he explained.
 

 


In the current study, haplotype 4 was only found to involve rs1718119 co-inherited with rs2230912, and was associated with substantially decreased relapse-free survival overall (hazard ratio, 0.6946), when compared with haplotype 2 (HR, 0.2078), he said.

The differences between haplotype 4 and haplotype 2, and between haplotype 4 and patients with neither haplotype, were highly statistically significant.

Relapse-free survival did not differ significantly between those with haplotype 2 and those with neither haplotype (HR, 0.7717). Similarly, overall survival was significantly poorer among those with haplotype 4 versus haplotype 2 or no haplotype (HR, 0.2812 and 0.2882, respectively), but no difference was seen in overall survival between those with haplotype 2 and those with no haplotype (HR, 1.003), he said.

P2X7 is a purinergic signaling receptor located at chromosome 12q24–a region associated with inflammatory disorders. It plays an important role in immunogenic cell death. It is expressed in all leukocytes, with the highest level of expression seen in monocyte lineage. Binding of its ligand – extracellular adenosine 5’-triphosphate – leads to activation of dendritic cells and release of IL1b leading to T cell recruitment and the production of memory T cells.
 

 


Both gain- and loss-of-function SNPs in p2X7 have been reported and implicated in GVHD and other inflammatory disorders, Dr. Ritchie said, explaining the rationale for studying their correlations with outcomes after allogeneic stem cell transplantation.

While such transplants are highly effective for treating hematologic malignancies, outcomes can be adversely affected by infection, acute organ dysfunction, and GVHD. Pretransplant conditioning regimens are associated with high levels of immunogenic cell death and the release of extracellular adenosine 5’-triphosphate, therefore signaling through the p2X7 receptor may lead to activation of downstream effectors that influence transplant outcome, he noted.

“We hypothesized that germline gain or loss of function polymorphisms in this receptor in recipients of allogeneic transplantation would result in an adverse outcome,” he said.

The mean age of the recipients whose samples were analyzed was 46 years, and about half were women. Most (83.8%) had a peripheral blood graft source and 64% of transplants were from related donors. The nonrelapse mortality at 24 months was 12.98%, Dr. Ritchie said, noting that their indications for transplantation were “fairly representative of the adult transplant population, dominated by acute leukemia with a range of other acute conditions.”
 

 


The findings – particularly those with respect to haplotype 4, which had the most substantial impact – could play a role in patient risk assessment.

“Potentially, although it is a relatively uncommon haplotype, pretransplant identification of haplotype 4 may well have implications for transplant decision making, given the fact that the majority of our patients with this haplotype did not survive posttransplant,” he concluded, noting that an effort to validate the findings is ongoing in an additional 300 patients.

Dr. Ritchie reported having no financial disclosures.

SOURCE: Koldej R et al. The 2018 BMT Tandem Meetings, Abstract 22.

 

– The presence of p2X7 receptor single nucleotide polymorphisms (SNPs) associated with gain and loss of function may help predict outcomes after allogeneic stem cell transplantation, according to findings from a clinical correlate analysis of recipient and donor DNA samples.

The findings require validation in future studies, but suggest that the presence of the SNPs and p2X7 haplotypes 2 and 4 could be incorporated into disease risk models to improve transplant decision making, David Stuart Ritchie, MD, reported at the combined annual meetings of the Center for International Blood & Marrow Transplant Research and the American Society for Blood and Marrow Transplantation.

The analysis, which specifically looked for the presence of 16 previously identified SNPs and the haplotypes 2 and 4 in p2x7, was performed on pretransplant DNA samples from 333 allogeneic stem cell transplant recipients and 228 donors at a single center between 2002 and 2013. The findings were correlated with patient outcomes.

Five SNPs were excluded from correlation because of low frequency, and of the 11 remaining SNPs, 3 were found to be significantly associated with reduced incidence of acute and/or chronic graft-versus-host disease (GVHD), and 2 were significantly associated with increased relapse or transplant-related mortality, said Dr. Ritchie of the University of Melbourne, Parkville, Australia.

The loss-of-function SNPs rs28360457 and rs3751133 – each linked with decreased inflammation – were significantly associated with a reduced incidence of acute GVHD when comparing grade 0 with grades 1-4 GVHD (P = .0234 and P = .0411, respectively), but not when comparing grades 0-1 and grades 2-4 GVHD.

SNP rs3751133 was also significantly associated with reduced incidence of chronic GVHD when comparing grade 0 with grades 0-4 GVHD (P = .01), but not when comparing grades 0-1 and grades 2-4 GVHD, he said.

The loss-of-function SNP rs1653624 – which is linked with decreased phagocytosis – was associated with an increased incidence of acute GVHD when comparing grade 0 vs. grade 1-4 GVHD (P = .01), but not when comparing grades 0-1 and grades 2-4 GVHD (P = NS).

 

 


SNP rs7958311, which had increased surface expression, was associated with a trend toward increased relapse risk (P = .053), and the loss-of-function SNP rs1653624 was associated with an excess of early transplant-related mortality (P = .0471).

“Individual SNPs are interesting, but perhaps more interesting are the haplotypes,” Dr. Ritchie said.

Sharon Worcester/MDedge News
Dr. David Stuart Ritchie
Haplotype 2, which was found in 46 of the 333 allogeneic stem cell transplant recipients, involves gain-of-function rs178119 alone.

Haplotype 4, which was found in 8 recipients, involves rs1718119 and rs7958311. Those SNPs were previously shown to have 300% and 195% increased expression, respectively, with or without rs2230912, which has been shown to be decreased by 72%, and with or without loss of function rs1653624. Haplotype 4 is associated with a net increase in p2X7 activity, he explained.
 

 


In the current study, haplotype 4 was only found to involve rs1718119 co-inherited with rs2230912, and was associated with substantially decreased relapse-free survival overall (hazard ratio, 0.6946), when compared with haplotype 2 (HR, 0.2078), he said.

The differences between haplotype 4 and haplotype 2, and between haplotype 4 and patients with neither haplotype, were highly statistically significant.

Relapse-free survival did not differ significantly between those with haplotype 2 and those with neither haplotype (HR, 0.7717). Similarly, overall survival was significantly poorer among those with haplotype 4 versus haplotype 2 or no haplotype (HR, 0.2812 and 0.2882, respectively), but no difference was seen in overall survival between those with haplotype 2 and those with no haplotype (HR, 1.003), he said.

P2X7 is a purinergic signaling receptor located at chromosome 12q24–a region associated with inflammatory disorders. It plays an important role in immunogenic cell death. It is expressed in all leukocytes, with the highest level of expression seen in monocyte lineage. Binding of its ligand – extracellular adenosine 5’-triphosphate – leads to activation of dendritic cells and release of IL1b leading to T cell recruitment and the production of memory T cells.
 

 


Both gain- and loss-of-function SNPs in p2X7 have been reported and implicated in GVHD and other inflammatory disorders, Dr. Ritchie said, explaining the rationale for studying their correlations with outcomes after allogeneic stem cell transplantation.

While such transplants are highly effective for treating hematologic malignancies, outcomes can be adversely affected by infection, acute organ dysfunction, and GVHD. Pretransplant conditioning regimens are associated with high levels of immunogenic cell death and the release of extracellular adenosine 5’-triphosphate, therefore signaling through the p2X7 receptor may lead to activation of downstream effectors that influence transplant outcome, he noted.

“We hypothesized that germline gain or loss of function polymorphisms in this receptor in recipients of allogeneic transplantation would result in an adverse outcome,” he said.

The mean age of the recipients whose samples were analyzed was 46 years, and about half were women. Most (83.8%) had a peripheral blood graft source and 64% of transplants were from related donors. The nonrelapse mortality at 24 months was 12.98%, Dr. Ritchie said, noting that their indications for transplantation were “fairly representative of the adult transplant population, dominated by acute leukemia with a range of other acute conditions.”
 

 


The findings – particularly those with respect to haplotype 4, which had the most substantial impact – could play a role in patient risk assessment.

“Potentially, although it is a relatively uncommon haplotype, pretransplant identification of haplotype 4 may well have implications for transplant decision making, given the fact that the majority of our patients with this haplotype did not survive posttransplant,” he concluded, noting that an effort to validate the findings is ongoing in an additional 300 patients.

Dr. Ritchie reported having no financial disclosures.

SOURCE: Koldej R et al. The 2018 BMT Tandem Meetings, Abstract 22.

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Key clinical point: The presence of p2X7 SNPs may help predict infection, survival after allogeneic stem cell transplant.

Major finding: Haplotype 4 was associated with substantially decreased relapse-free survival overall (hazard ratio, 0.6946) versus haplotype 2 (HR, 0.2078).

Study details: A clinical correlate analysis of 561 DNA samples.

Disclosures: Dr. Ritchie reported having no financial disclosures.

Source: Koldej R et al. The 2018 BMT Tandem Meetings, Abstract 22.

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Study shows value of pretransplant assessment of function, endurance

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– Comprehensive assessment of functional status and endurance prior to allogeneic hematopoietic cell transplantation (HCT) provides important insights into posttransplant outcomes, and when used in combination with other measures may improve the patient selection process, a chart review suggests.

In 349 patients, results of the prospective assessment of physical performance and endurance, along with HCT Comorbidity Index (HCT-CI) score and Karnofsky Performance Scale score (KPS), were compared with day 100-plus nonrelapse mortality and overall survival. The measures were also compared with the novel measures of hospital length of stay, and death during HCT admission, Shabnam Rehman, MD, reported at the combined annual meetings of the Center for International Blood & Marrow Transplant Research and the American Society for Blood and Marrow Transplantation.

FatCamera/Getty Images
Age, gender, race, disease, and conditioning regimen were not associated with the novel outcomes of length of stay, inpatient death, or day 100-plus nonrelapse mortality, said Dr. Rehman, a hematology-oncology fellow at Roswell Park Cancer Institute, Buffalo, N.Y.

However, heart rate recovery in less than 3 minutes after performing 25 step-ups on each side was associated with shorter length of stay with 89% of those patients, compared with 11% of patients who were not able to recover their heart rate in less than 3 minutes, being discharged within 30 days, she said.



“Similarly, patients who are able to perform at least 11 sit-to-stands in 30 seconds are more likely to be discharged earlier (63% vs. 14% discharged within 30 days),” she said. “The converse is also true.”

That is, only 16% of those not able to recover their heart rate within 3 minutes had a 30-day or shorter stay, while 31% had at least a 60-day stay. In addition, just 13% of those with limited endurance had a 30-day stay or shorter, while 24% had at least a 60-day stay, she explained.

Further, patients with limited endurance, and those unable to perform 10 or more sit-to-stands in 30 seconds were more likely to die during their first transplant admission. Of those with limited endurance, 31% died during admission and 13% survived, and of those with good endurance 69% died during admission and 87% survived. Among patients who were unable to perform more than 10 sit-to-stands, 42% died during admission and 20% survived, and of those able to perform 11 or more, 38% died during admission, and 53% survived.

 

 


Overall survival was associated with age, KPS, HCT-CI, and age-adjusted HCT-CI, she noted.

“Patients who were over age 40 and more, and patients with a KPS of 60 or 70, belong to the high- to intermediate-risk group more likely to have decreased overall survival as has been shown in previous studies,” she said. “In addition to validating these findings, we also found that the semiquantitative measures, including pain and endurance, were also associated with overall survival.”

Those with pain present or limited endurance had significantly poorer overall survival (P = .007 and P = .01, respectively), and this finding was reflected in the quantitative measures of sit-to-stands (P = .01) and step-ups (P = .001), even when stratified by age-adjusted HCT-CI, she said.

In addition, a number of risk factors present at the pretreatment assessment were found to be significantly associated with requirement of an assistive device at discharge. These included pain, weakness in the lower extremities, use of an assistive device, inability to perform 25 step-ups and more than 10 sit-to-stands in 30 seconds, and limited endurance (P values ranging from .02 to less than .0001). Requirement of a device was associated with poorer overall survival (P = .03), she said.

 

 


Study participants were adults aged 18 years and older (median, 58 years) undergoing a first allogeneic HCT at a single center between 2010 and 2016. Most (83%) were older than age 40 years and 58% were men. About half (51%) had acute myeloid leukemia, and 64% overall had a KPS score of 60-70.


Physical therapists assessed physical performance of all patients within 4 weeks pre-HCT; testing included 25 7-inch step-ups on each side, unassisted sit-to-stands from an 18-inch chair in 30 seconds, weight-bearing ability, need for assistance with ambulation, motor strength in four extremities, sensory or coordination impairment, self-reported pain, and time to recovery of heart rate and oxygen saturation to pre-exercise levels.

“The HCT-CI is a validated tool that predicts nonrelapse mortality and overall survival, but comorbidity alone as a single domain is not a surrogate of overall health or reflection on the true biological age of our patients,” Dr. Rehman said, noting that studies have shown that functional impairment is associated with shorter overall survival, and that patient-reported physical functioning is predictive of overall survival. “The assessment of functional impairment becomes more critical given the aging U.S. population and older patients receiving transplant.”

Traditionally, functional status has been assessed via the KPS, which is a subjective measure and lacks precision, and the HCT-CI has not been studied in the context of the novel outcome measures addressed in the current study, she noted.

 

 


The current findings highlight the prognostic value of a more quantitative pretransplant assessment, which can help improve the patient selection process.

“We are in the process of analyzing some more outcomes of these pretransplant assessments, and developing a score that can, in conjunction with other predictive tools, help us improve pretransplant risk stratification and devise interventions that can improve the endurance and overall survival of the patients,” she concluded.

Dr. Rehman reported having no financial disclosures.

SOURCE: Rehman S et al., The 2018 BTM Tandem Meetings, Abstract 19.

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– Comprehensive assessment of functional status and endurance prior to allogeneic hematopoietic cell transplantation (HCT) provides important insights into posttransplant outcomes, and when used in combination with other measures may improve the patient selection process, a chart review suggests.

In 349 patients, results of the prospective assessment of physical performance and endurance, along with HCT Comorbidity Index (HCT-CI) score and Karnofsky Performance Scale score (KPS), were compared with day 100-plus nonrelapse mortality and overall survival. The measures were also compared with the novel measures of hospital length of stay, and death during HCT admission, Shabnam Rehman, MD, reported at the combined annual meetings of the Center for International Blood & Marrow Transplant Research and the American Society for Blood and Marrow Transplantation.

FatCamera/Getty Images
Age, gender, race, disease, and conditioning regimen were not associated with the novel outcomes of length of stay, inpatient death, or day 100-plus nonrelapse mortality, said Dr. Rehman, a hematology-oncology fellow at Roswell Park Cancer Institute, Buffalo, N.Y.

However, heart rate recovery in less than 3 minutes after performing 25 step-ups on each side was associated with shorter length of stay with 89% of those patients, compared with 11% of patients who were not able to recover their heart rate in less than 3 minutes, being discharged within 30 days, she said.



“Similarly, patients who are able to perform at least 11 sit-to-stands in 30 seconds are more likely to be discharged earlier (63% vs. 14% discharged within 30 days),” she said. “The converse is also true.”

That is, only 16% of those not able to recover their heart rate within 3 minutes had a 30-day or shorter stay, while 31% had at least a 60-day stay. In addition, just 13% of those with limited endurance had a 30-day stay or shorter, while 24% had at least a 60-day stay, she explained.

Further, patients with limited endurance, and those unable to perform 10 or more sit-to-stands in 30 seconds were more likely to die during their first transplant admission. Of those with limited endurance, 31% died during admission and 13% survived, and of those with good endurance 69% died during admission and 87% survived. Among patients who were unable to perform more than 10 sit-to-stands, 42% died during admission and 20% survived, and of those able to perform 11 or more, 38% died during admission, and 53% survived.

 

 


Overall survival was associated with age, KPS, HCT-CI, and age-adjusted HCT-CI, she noted.

“Patients who were over age 40 and more, and patients with a KPS of 60 or 70, belong to the high- to intermediate-risk group more likely to have decreased overall survival as has been shown in previous studies,” she said. “In addition to validating these findings, we also found that the semiquantitative measures, including pain and endurance, were also associated with overall survival.”

Those with pain present or limited endurance had significantly poorer overall survival (P = .007 and P = .01, respectively), and this finding was reflected in the quantitative measures of sit-to-stands (P = .01) and step-ups (P = .001), even when stratified by age-adjusted HCT-CI, she said.

In addition, a number of risk factors present at the pretreatment assessment were found to be significantly associated with requirement of an assistive device at discharge. These included pain, weakness in the lower extremities, use of an assistive device, inability to perform 25 step-ups and more than 10 sit-to-stands in 30 seconds, and limited endurance (P values ranging from .02 to less than .0001). Requirement of a device was associated with poorer overall survival (P = .03), she said.

 

 


Study participants were adults aged 18 years and older (median, 58 years) undergoing a first allogeneic HCT at a single center between 2010 and 2016. Most (83%) were older than age 40 years and 58% were men. About half (51%) had acute myeloid leukemia, and 64% overall had a KPS score of 60-70.


Physical therapists assessed physical performance of all patients within 4 weeks pre-HCT; testing included 25 7-inch step-ups on each side, unassisted sit-to-stands from an 18-inch chair in 30 seconds, weight-bearing ability, need for assistance with ambulation, motor strength in four extremities, sensory or coordination impairment, self-reported pain, and time to recovery of heart rate and oxygen saturation to pre-exercise levels.

“The HCT-CI is a validated tool that predicts nonrelapse mortality and overall survival, but comorbidity alone as a single domain is not a surrogate of overall health or reflection on the true biological age of our patients,” Dr. Rehman said, noting that studies have shown that functional impairment is associated with shorter overall survival, and that patient-reported physical functioning is predictive of overall survival. “The assessment of functional impairment becomes more critical given the aging U.S. population and older patients receiving transplant.”

Traditionally, functional status has been assessed via the KPS, which is a subjective measure and lacks precision, and the HCT-CI has not been studied in the context of the novel outcome measures addressed in the current study, she noted.

 

 


The current findings highlight the prognostic value of a more quantitative pretransplant assessment, which can help improve the patient selection process.

“We are in the process of analyzing some more outcomes of these pretransplant assessments, and developing a score that can, in conjunction with other predictive tools, help us improve pretransplant risk stratification and devise interventions that can improve the endurance and overall survival of the patients,” she concluded.

Dr. Rehman reported having no financial disclosures.

SOURCE: Rehman S et al., The 2018 BTM Tandem Meetings, Abstract 19.

 

– Comprehensive assessment of functional status and endurance prior to allogeneic hematopoietic cell transplantation (HCT) provides important insights into posttransplant outcomes, and when used in combination with other measures may improve the patient selection process, a chart review suggests.

In 349 patients, results of the prospective assessment of physical performance and endurance, along with HCT Comorbidity Index (HCT-CI) score and Karnofsky Performance Scale score (KPS), were compared with day 100-plus nonrelapse mortality and overall survival. The measures were also compared with the novel measures of hospital length of stay, and death during HCT admission, Shabnam Rehman, MD, reported at the combined annual meetings of the Center for International Blood & Marrow Transplant Research and the American Society for Blood and Marrow Transplantation.

FatCamera/Getty Images
Age, gender, race, disease, and conditioning regimen were not associated with the novel outcomes of length of stay, inpatient death, or day 100-plus nonrelapse mortality, said Dr. Rehman, a hematology-oncology fellow at Roswell Park Cancer Institute, Buffalo, N.Y.

However, heart rate recovery in less than 3 minutes after performing 25 step-ups on each side was associated with shorter length of stay with 89% of those patients, compared with 11% of patients who were not able to recover their heart rate in less than 3 minutes, being discharged within 30 days, she said.



“Similarly, patients who are able to perform at least 11 sit-to-stands in 30 seconds are more likely to be discharged earlier (63% vs. 14% discharged within 30 days),” she said. “The converse is also true.”

That is, only 16% of those not able to recover their heart rate within 3 minutes had a 30-day or shorter stay, while 31% had at least a 60-day stay. In addition, just 13% of those with limited endurance had a 30-day stay or shorter, while 24% had at least a 60-day stay, she explained.

Further, patients with limited endurance, and those unable to perform 10 or more sit-to-stands in 30 seconds were more likely to die during their first transplant admission. Of those with limited endurance, 31% died during admission and 13% survived, and of those with good endurance 69% died during admission and 87% survived. Among patients who were unable to perform more than 10 sit-to-stands, 42% died during admission and 20% survived, and of those able to perform 11 or more, 38% died during admission, and 53% survived.

 

 


Overall survival was associated with age, KPS, HCT-CI, and age-adjusted HCT-CI, she noted.

“Patients who were over age 40 and more, and patients with a KPS of 60 or 70, belong to the high- to intermediate-risk group more likely to have decreased overall survival as has been shown in previous studies,” she said. “In addition to validating these findings, we also found that the semiquantitative measures, including pain and endurance, were also associated with overall survival.”

Those with pain present or limited endurance had significantly poorer overall survival (P = .007 and P = .01, respectively), and this finding was reflected in the quantitative measures of sit-to-stands (P = .01) and step-ups (P = .001), even when stratified by age-adjusted HCT-CI, she said.

In addition, a number of risk factors present at the pretreatment assessment were found to be significantly associated with requirement of an assistive device at discharge. These included pain, weakness in the lower extremities, use of an assistive device, inability to perform 25 step-ups and more than 10 sit-to-stands in 30 seconds, and limited endurance (P values ranging from .02 to less than .0001). Requirement of a device was associated with poorer overall survival (P = .03), she said.

 

 


Study participants were adults aged 18 years and older (median, 58 years) undergoing a first allogeneic HCT at a single center between 2010 and 2016. Most (83%) were older than age 40 years and 58% were men. About half (51%) had acute myeloid leukemia, and 64% overall had a KPS score of 60-70.


Physical therapists assessed physical performance of all patients within 4 weeks pre-HCT; testing included 25 7-inch step-ups on each side, unassisted sit-to-stands from an 18-inch chair in 30 seconds, weight-bearing ability, need for assistance with ambulation, motor strength in four extremities, sensory or coordination impairment, self-reported pain, and time to recovery of heart rate and oxygen saturation to pre-exercise levels.

“The HCT-CI is a validated tool that predicts nonrelapse mortality and overall survival, but comorbidity alone as a single domain is not a surrogate of overall health or reflection on the true biological age of our patients,” Dr. Rehman said, noting that studies have shown that functional impairment is associated with shorter overall survival, and that patient-reported physical functioning is predictive of overall survival. “The assessment of functional impairment becomes more critical given the aging U.S. population and older patients receiving transplant.”

Traditionally, functional status has been assessed via the KPS, which is a subjective measure and lacks precision, and the HCT-CI has not been studied in the context of the novel outcome measures addressed in the current study, she noted.

 

 


The current findings highlight the prognostic value of a more quantitative pretransplant assessment, which can help improve the patient selection process.

“We are in the process of analyzing some more outcomes of these pretransplant assessments, and developing a score that can, in conjunction with other predictive tools, help us improve pretransplant risk stratification and devise interventions that can improve the endurance and overall survival of the patients,” she concluded.

Dr. Rehman reported having no financial disclosures.

SOURCE: Rehman S et al., The 2018 BTM Tandem Meetings, Abstract 19.

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Key clinical point: Assessment of pre-allogeneic HCT functional status and endurance may improve patient selection.

Major finding: The 30-day discharge rates were 89% versus 11% in those with and without good heart rate recovery, respectively.

Study details: A retrospective review of prospectively collected data for 349 patients.

Disclosures: Dr. Rehman reported having no financial disclosures.

Source: Rehman S et al. The 2018 BMT Tandem Meetings, Abstract 19.

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Reduced intensity conditioning doesn’t protect fertility

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Fri, 01/18/2019 - 17:36

 

– Both male and female recipients of childhood hematopoietic stem cell transplantation (HSCT) were very likely to have severely decreased fertility potential, even in the setting of preserved puberty, according to a recent study of adolescent and young adult HSCT recipients.

A reduced intensity conditioning regimen did not protect this cohort from decreased fertility, a finding that surprised the study’s lead author.

“We had hypothesized that, as compared to myeloablative conditioning, reduced intensity conditioning in children who received HSCT would lower the risk of infertility and lessen gonadal failure,” said Helen Oquendo del Toro, MD. In fact, Dr. Oquendo del Toro and her collaborators found that more than 90% of semen samples available for analysis had results that indicated infertility or severely impaired fertility, regardless of the type of pretransplant conditioning the patient had received.

The study highlights the need for fertility preservation when possible before HSCT, and makes clear that “normal puberty does not equate to normal fertility,” said Dr. Oquendo del Toro, of Cincinnati Children’s Hospital Medical Center.

Dr. Oquendo del Toro presented results of an observational cohort study of late effects of HSCT that included individuals aged 1-40 years old who received a single HSCT at, or after, 1 year of age.

Twenty-one males in the study had semen available for analysis. Of the 10 males who received myeloablative conditioning (MAC), 8 had azoospermia, and 2 more had oligoteratospermia (low sperm count with abnormal morphology). For the 11 males who received reduced intensity conditioning (RIC), eight had azoospermia, two had semen samples that showed oligoteratospermia, and one had a normal semen analysis.

The median age at transplant for these males was 14.5 years, and patients were a median of 19 years old at follow-up, Dr. Oquendo del Toro said at the combined annual meetings of the Center for International Blood & Marrow Transplant Research and the American Society for Blood and Marrow Transplantation.

 

 


For females in the study, low levels of anti-Müllerian hormone (AMH) – generally considered the best surrogate lab value for ovarian reserve – were nearly as common. Of 14 females receiving MAC, 13 (93%) had low AMH, as did 6 of 8 (75%) female patients who received RIC.

Individuals with more than one HSCT were excluded, as were those with Fanconi anemia, which itself carries a risk of gonadal failure. The study’s two aims were to investigate gonadal function as well as fertility potential after receipt of either RIC or MAC for HSCT.

Patients were seen by an endocrinologist who assessed testicular volume and assigned a Tanner stage. At age 11 and older, patients’ gonadal function was assessed on an annual basis by obtaining levels of luteinizing hormone and follicle stimulating hormone for all patients; female estradiol levels were tracked, as were male testosterone levels.

Assessment of fertility potential required additional laboratory testing: For females, the investigators obtained AMH levels, while for males, semen analysis was coupled with serum levels of inhibin B, an indicator of Sertoli cell function.
 

 


A total of 72 males were more than 1 year post-HSCT in the cohort, and of these, 41 were at least 11 years old and had achieved pubertal status according to laboratory evaluation. In all, 22 of the male patients received RIC, and 19 received MAC.

Males receiving MAC were a median 20 years old at their follow-up evaluation, and a median 6 years post-HSCT, while the RIC group were a median of 18.5 years old and 5.5 years out from their transplant.

Of the 50 females who were more than 1 year post-HSCT, 25 were pubertal and 11 years old or older. Nine of the female patients received RIC, and 16 received MAC.

Females who received MAC were a median 12.1 years old and 4.1 years post-HSCT at their follow-up evaluation. Females receiving RIC were a median 16 years old, and 6.5 years post-HSCT at the time of evaluation.
 

 


Patients received their transplants for a variety of malignant and nonmalignant conditions.

“We saw relatively normal gonadotropins after both reduced intensity and myeloablative conditioning in males,” Dr. Oquendo del Toro said. Of the MAC group, 4 of 15 (27%) had elevated follicle stimulating hormone levels, as did 2 of 17 (12%) of the RIC group. Elevated luteinizing hormone levels were seen in 2 of 15 (13%) of the MAC group and 1 of 17 (6%) of the RIC group. Four patients in each group had abnormally low testosterone levels.

However, when the investigators looked at inhibin B levels in males, they found abnormally low levels in 9 of 15 (60%) of those who received MAC, and in 6 of 15 (40%) of those who received RIC. These results meshed with the severely abnormal semen analyses investigators found from those participants for whom a sample was available, Dr. Oquendo del Toro said.

For females, estradiol levels were significantly lower for those who had received MAC, with 7 of 11 (64%) of that group having abnormally low estradiol levels. The levels approached 0 pg/mL for many, said Dr. Oquendo del Toro. None of the eight patients who had received RIC had abnormally low estradiol levels (P = .0008).
 

 


“Male puberty is relatively well preserved after both myeloablative and reduced intensity conditioning, but there is a greater than 90% risk of male infertility associated with both reduced intensity and myeloablative conditioning for HSCT,” Dr. Oquendo del Toro said.

For females, the study paints a different picture. “We saw decreased premature ovarian failure after reduced intensity conditioning … but the fertility potential as assessed by anti-Müllerian hormone was decreased” after both conditioning regimens, she said.

Dr. Oquendo del Toro reported having no conflicts of interest.
 

SOURCE: Oquendo del Toro H et al. The 2018 BMT Tandem Meetings, Abstract 88.

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– Both male and female recipients of childhood hematopoietic stem cell transplantation (HSCT) were very likely to have severely decreased fertility potential, even in the setting of preserved puberty, according to a recent study of adolescent and young adult HSCT recipients.

A reduced intensity conditioning regimen did not protect this cohort from decreased fertility, a finding that surprised the study’s lead author.

“We had hypothesized that, as compared to myeloablative conditioning, reduced intensity conditioning in children who received HSCT would lower the risk of infertility and lessen gonadal failure,” said Helen Oquendo del Toro, MD. In fact, Dr. Oquendo del Toro and her collaborators found that more than 90% of semen samples available for analysis had results that indicated infertility or severely impaired fertility, regardless of the type of pretransplant conditioning the patient had received.

The study highlights the need for fertility preservation when possible before HSCT, and makes clear that “normal puberty does not equate to normal fertility,” said Dr. Oquendo del Toro, of Cincinnati Children’s Hospital Medical Center.

Dr. Oquendo del Toro presented results of an observational cohort study of late effects of HSCT that included individuals aged 1-40 years old who received a single HSCT at, or after, 1 year of age.

Twenty-one males in the study had semen available for analysis. Of the 10 males who received myeloablative conditioning (MAC), 8 had azoospermia, and 2 more had oligoteratospermia (low sperm count with abnormal morphology). For the 11 males who received reduced intensity conditioning (RIC), eight had azoospermia, two had semen samples that showed oligoteratospermia, and one had a normal semen analysis.

The median age at transplant for these males was 14.5 years, and patients were a median of 19 years old at follow-up, Dr. Oquendo del Toro said at the combined annual meetings of the Center for International Blood & Marrow Transplant Research and the American Society for Blood and Marrow Transplantation.

 

 


For females in the study, low levels of anti-Müllerian hormone (AMH) – generally considered the best surrogate lab value for ovarian reserve – were nearly as common. Of 14 females receiving MAC, 13 (93%) had low AMH, as did 6 of 8 (75%) female patients who received RIC.

Individuals with more than one HSCT were excluded, as were those with Fanconi anemia, which itself carries a risk of gonadal failure. The study’s two aims were to investigate gonadal function as well as fertility potential after receipt of either RIC or MAC for HSCT.

Patients were seen by an endocrinologist who assessed testicular volume and assigned a Tanner stage. At age 11 and older, patients’ gonadal function was assessed on an annual basis by obtaining levels of luteinizing hormone and follicle stimulating hormone for all patients; female estradiol levels were tracked, as were male testosterone levels.

Assessment of fertility potential required additional laboratory testing: For females, the investigators obtained AMH levels, while for males, semen analysis was coupled with serum levels of inhibin B, an indicator of Sertoli cell function.
 

 


A total of 72 males were more than 1 year post-HSCT in the cohort, and of these, 41 were at least 11 years old and had achieved pubertal status according to laboratory evaluation. In all, 22 of the male patients received RIC, and 19 received MAC.

Males receiving MAC were a median 20 years old at their follow-up evaluation, and a median 6 years post-HSCT, while the RIC group were a median of 18.5 years old and 5.5 years out from their transplant.

Of the 50 females who were more than 1 year post-HSCT, 25 were pubertal and 11 years old or older. Nine of the female patients received RIC, and 16 received MAC.

Females who received MAC were a median 12.1 years old and 4.1 years post-HSCT at their follow-up evaluation. Females receiving RIC were a median 16 years old, and 6.5 years post-HSCT at the time of evaluation.
 

 


Patients received their transplants for a variety of malignant and nonmalignant conditions.

“We saw relatively normal gonadotropins after both reduced intensity and myeloablative conditioning in males,” Dr. Oquendo del Toro said. Of the MAC group, 4 of 15 (27%) had elevated follicle stimulating hormone levels, as did 2 of 17 (12%) of the RIC group. Elevated luteinizing hormone levels were seen in 2 of 15 (13%) of the MAC group and 1 of 17 (6%) of the RIC group. Four patients in each group had abnormally low testosterone levels.

However, when the investigators looked at inhibin B levels in males, they found abnormally low levels in 9 of 15 (60%) of those who received MAC, and in 6 of 15 (40%) of those who received RIC. These results meshed with the severely abnormal semen analyses investigators found from those participants for whom a sample was available, Dr. Oquendo del Toro said.

For females, estradiol levels were significantly lower for those who had received MAC, with 7 of 11 (64%) of that group having abnormally low estradiol levels. The levels approached 0 pg/mL for many, said Dr. Oquendo del Toro. None of the eight patients who had received RIC had abnormally low estradiol levels (P = .0008).
 

 


“Male puberty is relatively well preserved after both myeloablative and reduced intensity conditioning, but there is a greater than 90% risk of male infertility associated with both reduced intensity and myeloablative conditioning for HSCT,” Dr. Oquendo del Toro said.

For females, the study paints a different picture. “We saw decreased premature ovarian failure after reduced intensity conditioning … but the fertility potential as assessed by anti-Müllerian hormone was decreased” after both conditioning regimens, she said.

Dr. Oquendo del Toro reported having no conflicts of interest.
 

SOURCE: Oquendo del Toro H et al. The 2018 BMT Tandem Meetings, Abstract 88.

 

– Both male and female recipients of childhood hematopoietic stem cell transplantation (HSCT) were very likely to have severely decreased fertility potential, even in the setting of preserved puberty, according to a recent study of adolescent and young adult HSCT recipients.

A reduced intensity conditioning regimen did not protect this cohort from decreased fertility, a finding that surprised the study’s lead author.

“We had hypothesized that, as compared to myeloablative conditioning, reduced intensity conditioning in children who received HSCT would lower the risk of infertility and lessen gonadal failure,” said Helen Oquendo del Toro, MD. In fact, Dr. Oquendo del Toro and her collaborators found that more than 90% of semen samples available for analysis had results that indicated infertility or severely impaired fertility, regardless of the type of pretransplant conditioning the patient had received.

The study highlights the need for fertility preservation when possible before HSCT, and makes clear that “normal puberty does not equate to normal fertility,” said Dr. Oquendo del Toro, of Cincinnati Children’s Hospital Medical Center.

Dr. Oquendo del Toro presented results of an observational cohort study of late effects of HSCT that included individuals aged 1-40 years old who received a single HSCT at, or after, 1 year of age.

Twenty-one males in the study had semen available for analysis. Of the 10 males who received myeloablative conditioning (MAC), 8 had azoospermia, and 2 more had oligoteratospermia (low sperm count with abnormal morphology). For the 11 males who received reduced intensity conditioning (RIC), eight had azoospermia, two had semen samples that showed oligoteratospermia, and one had a normal semen analysis.

The median age at transplant for these males was 14.5 years, and patients were a median of 19 years old at follow-up, Dr. Oquendo del Toro said at the combined annual meetings of the Center for International Blood & Marrow Transplant Research and the American Society for Blood and Marrow Transplantation.

 

 


For females in the study, low levels of anti-Müllerian hormone (AMH) – generally considered the best surrogate lab value for ovarian reserve – were nearly as common. Of 14 females receiving MAC, 13 (93%) had low AMH, as did 6 of 8 (75%) female patients who received RIC.

Individuals with more than one HSCT were excluded, as were those with Fanconi anemia, which itself carries a risk of gonadal failure. The study’s two aims were to investigate gonadal function as well as fertility potential after receipt of either RIC or MAC for HSCT.

Patients were seen by an endocrinologist who assessed testicular volume and assigned a Tanner stage. At age 11 and older, patients’ gonadal function was assessed on an annual basis by obtaining levels of luteinizing hormone and follicle stimulating hormone for all patients; female estradiol levels were tracked, as were male testosterone levels.

Assessment of fertility potential required additional laboratory testing: For females, the investigators obtained AMH levels, while for males, semen analysis was coupled with serum levels of inhibin B, an indicator of Sertoli cell function.
 

 


A total of 72 males were more than 1 year post-HSCT in the cohort, and of these, 41 were at least 11 years old and had achieved pubertal status according to laboratory evaluation. In all, 22 of the male patients received RIC, and 19 received MAC.

Males receiving MAC were a median 20 years old at their follow-up evaluation, and a median 6 years post-HSCT, while the RIC group were a median of 18.5 years old and 5.5 years out from their transplant.

Of the 50 females who were more than 1 year post-HSCT, 25 were pubertal and 11 years old or older. Nine of the female patients received RIC, and 16 received MAC.

Females who received MAC were a median 12.1 years old and 4.1 years post-HSCT at their follow-up evaluation. Females receiving RIC were a median 16 years old, and 6.5 years post-HSCT at the time of evaluation.
 

 


Patients received their transplants for a variety of malignant and nonmalignant conditions.

“We saw relatively normal gonadotropins after both reduced intensity and myeloablative conditioning in males,” Dr. Oquendo del Toro said. Of the MAC group, 4 of 15 (27%) had elevated follicle stimulating hormone levels, as did 2 of 17 (12%) of the RIC group. Elevated luteinizing hormone levels were seen in 2 of 15 (13%) of the MAC group and 1 of 17 (6%) of the RIC group. Four patients in each group had abnormally low testosterone levels.

However, when the investigators looked at inhibin B levels in males, they found abnormally low levels in 9 of 15 (60%) of those who received MAC, and in 6 of 15 (40%) of those who received RIC. These results meshed with the severely abnormal semen analyses investigators found from those participants for whom a sample was available, Dr. Oquendo del Toro said.

For females, estradiol levels were significantly lower for those who had received MAC, with 7 of 11 (64%) of that group having abnormally low estradiol levels. The levels approached 0 pg/mL for many, said Dr. Oquendo del Toro. None of the eight patients who had received RIC had abnormally low estradiol levels (P = .0008).
 

 


“Male puberty is relatively well preserved after both myeloablative and reduced intensity conditioning, but there is a greater than 90% risk of male infertility associated with both reduced intensity and myeloablative conditioning for HSCT,” Dr. Oquendo del Toro said.

For females, the study paints a different picture. “We saw decreased premature ovarian failure after reduced intensity conditioning … but the fertility potential as assessed by anti-Müllerian hormone was decreased” after both conditioning regimens, she said.

Dr. Oquendo del Toro reported having no conflicts of interest.
 

SOURCE: Oquendo del Toro H et al. The 2018 BMT Tandem Meetings, Abstract 88.

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Key clinical point: Both males and females receiving pediatric HSCT had severely reduced fertility.

Major finding: Of 21 males receiving reduced intensity conditioning or myeloablative conditioning, all but one had azoospermia or oligoteratospermia.

Study details: Observational cohort study of 41 males and 25 females receiving pediatric HSCT.

Disclosures: Dr. Oquendo del Toro reported having no conflicts of interest.

Source: Oquendo del Toro H et al. The 2018 BMT Tandem Meetings, Abstract 88.

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Coming soon: CAR T-cell approvals in multiple myeloma

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The next major approval in the chimeric antigen receptor (CAR) T-cell therapy arena will target multiple myeloma, and will “completely transform oncology,” according to Carl June, MD.

That approval is anticipated sometime in 2019.

“Myeloma is the most common blood cancer in adults, and there’s never been a curative therapy, but now there is a subset of patients who look like they’re cured with CAR T cells,” Dr. June, the Richard W. Vague Professor in Immunotherapy and a pioneer in CAR T-cell research at the University of Pennsylvania, Philadelphia, said in an interview.

The first treated patient in a trial of a novel anti-B-cell maturation antigen (BCMA)-specific CAR T-cell therapy (CART-BCMA) developed by University of Pennsylvania researchers in collaboration with Novartis is part of that subset.

Woodring Wright, MD, a professor of cell biology and medicine at the University of Texas Southwestern Medical Center (UT Southwestern) in Dallas recently outed himself as that first patient, announcing in a Feb. 14, 2018, UT Southwestern press report that CART-BCMA saved his life.

Dr. Wright, who holds the Southland Financial Corporation Distinguished Chair in Geriatrics at UT Southwestern, was diagnosed with multiple myeloma about 12 years ago and failed 11 prior chemotherapies before he was enrolled in the CART-BCMA trial.

“Now he considers himself cured,” Dr. June said.

 

 


More than 2 years after receiving CART-BCMA he remains cancer free, and is now conducting CAR T-cell-related research in his lab at UT Southwestern in an effort to broaden the effectiveness of current CAR T-cell therapies. Specifically, he is looking at whether the small percentage of patients in whom CAR T-cell therapy does not work might benefit from telomerase to lengthen telomeres, as most patients who fail CAR T-cell therapy are elderly patients who might have terminally short telomeres, UT Southwestern reported.

The ongoing University of Pennsylvania trial led by Adam D. Cohen, MD, director of myeloma immunotherapy at the Abramson Cancer Center, has an overall response rate of 64%; initial phase 1 efficacy and safety results were reported at the American Society of Hematology (ASH) annual meeting in 2016, and multiple companies are currently pursuing registration trials for CAR T therapies in myeloma, Dr. June said.

Among them are bluebird bio and Celgene, which together are developing an anti-BCMA CAR T-cell therapy known as bb2121. That product was granted breakthrough therapy designation by the Food and Drug Administration in November 2017, and will thus receive expedited review. It has also been fast-tracked in Europe.

The decision to fast-track bb2121 in the United States was based on preliminary results from the CRB-410 trial. Updated findings from that trial were presented in December 2017 at ASH and showed an overall response rate of 94% in 21 patients, with 17 of 18 patients who received doses above 50 x 106 CAR+ T cells having an overall response, and 10 of the 18 achieving complete remission. The progression-free survival rates were 81% at 6 months, and 71% at 9 months, with responses deepening over time. The complete response rates were 27% and 56% in May and October of 2017, respectively.
 

 


Responses were durable, lasting more than 1 year in several patients, the investigators reported. Phase 2 of the trial – the global pivotal KarMMA trial – is currently enrolling and will dose patients at between 150 and 350 x 106 CAR+ T cells.

Janssen Biotech Inc. (a Johnson & Johnson company) and Legend Biotech USA Inc./Legend Biotech Ireland Limited (of Genscript Biotech Corporation) have also joined forces to develop an anti-BCMA CAR T-cell product for multiple myeloma, Dr. June said.
Sharon Worcester/MDedge News
Dr. Carl June


The companies announced in December that they had entered into “a worldwide collaboration and license agreement” to develop the CAR T-cell drug candidate.

LCAR-B38M is currently accepted for review by the China Food and Drug Administration and is in the planning phase of clinical studies in the United States for multiple myeloma, according to that announcement.
 

 


The “race between companies” for a CAR T myeloma approval will lead to a welcome addition to the treatment armamentarium, because while myeloma represents only about 2% of all cancers, it is responsible for 7% of cancer costs, Dr. June said.

Since many patients live with their disease for a long time, that can mean huge “financial toxicity” associated with treatment and patients still usually have “an awful outcome involving a long death,” he said.

“So CAR T-cell therapy for myeloma will bring a huge change to the practice of oncology,” he added, explaining that the first CAR T-cell therapy approved (tisagenlecleucel, in August 2017) was for pediatric acute lymphoblastic leukemia that had relapsed at least twice. “That’s only about 600 kids a year in the U.S., so it’s an ultra-orphan market,” he said.

With the subsequent approval of axicabtagene ciloleucel (in October 2017) and the anticipated myeloma approval, CAR T-cell therapy will move away from orphan status.
 

 


“There are a lot of difficulties whenever you change to something new,” he said, comparing the CAR T-cell therapy evolution to that of bone marrow transplantation in the 1980s.

Early on, there were only two places in the country where a patient could get a bone marrow transplant – Fred Hutchinson Cancer Center in Seattle and Johns Hopkins University in Baltimore. “Everyone said ‘you’ll never be able to do it routinely, it’s only at these two referral centers,’ because of the skill needed and the intensity of it,” he said. “But over the years, millions of transplants have now been done; they’re done at many community centers. And it’s the same thing with CARs; Novartis now has 30 centers and people have to be trained. It’s a new skill set, and it will take time,” he said.

That can be particularly frustrating because there are many patients with diseases that “might benefit in a major way” from CAR T-cell therapy, but who can’t get on a clinical trial, Dr. June noted.

“There’s more demand than availability, and it’s going to take awhile ... it’s like liver transplants – there aren’t enough donors to go around, so people die, they get on lists, and it’s really hard to see that, but eventually it will get solved,” he said, adding that the solution will most likely involve the complementary use of off-the-shelf CAR T cells in certain patients to induce remission and perhaps provide a bridge to some other definitive therapy, and ultra-personalized CAR T therapy in others, as well as combinations that include CAR T cells and targeted agents or checkpoint inhibitors.
 

 


CRISPR-Cas9 gene editing is also being looked at as a tool for engineering multiple myeloma cellular immunotherapy (and other cancer treatments), as in the Parker Institute–funded NYCE study, Dr. June said.

“We’re actually removing the [programmed death-1] gene and the T-cell receptors ... it shows enormous potential for gene editing. CRISPR is going to be used for a lot of things, but the first use is with T-cell therapies, so we’re really excited about that trial,” he said. “We just opened and we’re screening patients now.”

Dr. June reported royalties and research funding from Novartis and an ownership interest in Tmunity Therapeutics.

 

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The next major approval in the chimeric antigen receptor (CAR) T-cell therapy arena will target multiple myeloma, and will “completely transform oncology,” according to Carl June, MD.

That approval is anticipated sometime in 2019.

“Myeloma is the most common blood cancer in adults, and there’s never been a curative therapy, but now there is a subset of patients who look like they’re cured with CAR T cells,” Dr. June, the Richard W. Vague Professor in Immunotherapy and a pioneer in CAR T-cell research at the University of Pennsylvania, Philadelphia, said in an interview.

The first treated patient in a trial of a novel anti-B-cell maturation antigen (BCMA)-specific CAR T-cell therapy (CART-BCMA) developed by University of Pennsylvania researchers in collaboration with Novartis is part of that subset.

Woodring Wright, MD, a professor of cell biology and medicine at the University of Texas Southwestern Medical Center (UT Southwestern) in Dallas recently outed himself as that first patient, announcing in a Feb. 14, 2018, UT Southwestern press report that CART-BCMA saved his life.

Dr. Wright, who holds the Southland Financial Corporation Distinguished Chair in Geriatrics at UT Southwestern, was diagnosed with multiple myeloma about 12 years ago and failed 11 prior chemotherapies before he was enrolled in the CART-BCMA trial.

“Now he considers himself cured,” Dr. June said.

 

 


More than 2 years after receiving CART-BCMA he remains cancer free, and is now conducting CAR T-cell-related research in his lab at UT Southwestern in an effort to broaden the effectiveness of current CAR T-cell therapies. Specifically, he is looking at whether the small percentage of patients in whom CAR T-cell therapy does not work might benefit from telomerase to lengthen telomeres, as most patients who fail CAR T-cell therapy are elderly patients who might have terminally short telomeres, UT Southwestern reported.

The ongoing University of Pennsylvania trial led by Adam D. Cohen, MD, director of myeloma immunotherapy at the Abramson Cancer Center, has an overall response rate of 64%; initial phase 1 efficacy and safety results were reported at the American Society of Hematology (ASH) annual meeting in 2016, and multiple companies are currently pursuing registration trials for CAR T therapies in myeloma, Dr. June said.

Among them are bluebird bio and Celgene, which together are developing an anti-BCMA CAR T-cell therapy known as bb2121. That product was granted breakthrough therapy designation by the Food and Drug Administration in November 2017, and will thus receive expedited review. It has also been fast-tracked in Europe.

The decision to fast-track bb2121 in the United States was based on preliminary results from the CRB-410 trial. Updated findings from that trial were presented in December 2017 at ASH and showed an overall response rate of 94% in 21 patients, with 17 of 18 patients who received doses above 50 x 106 CAR+ T cells having an overall response, and 10 of the 18 achieving complete remission. The progression-free survival rates were 81% at 6 months, and 71% at 9 months, with responses deepening over time. The complete response rates were 27% and 56% in May and October of 2017, respectively.
 

 


Responses were durable, lasting more than 1 year in several patients, the investigators reported. Phase 2 of the trial – the global pivotal KarMMA trial – is currently enrolling and will dose patients at between 150 and 350 x 106 CAR+ T cells.

Janssen Biotech Inc. (a Johnson & Johnson company) and Legend Biotech USA Inc./Legend Biotech Ireland Limited (of Genscript Biotech Corporation) have also joined forces to develop an anti-BCMA CAR T-cell product for multiple myeloma, Dr. June said.
Sharon Worcester/MDedge News
Dr. Carl June


The companies announced in December that they had entered into “a worldwide collaboration and license agreement” to develop the CAR T-cell drug candidate.

LCAR-B38M is currently accepted for review by the China Food and Drug Administration and is in the planning phase of clinical studies in the United States for multiple myeloma, according to that announcement.
 

 


The “race between companies” for a CAR T myeloma approval will lead to a welcome addition to the treatment armamentarium, because while myeloma represents only about 2% of all cancers, it is responsible for 7% of cancer costs, Dr. June said.

Since many patients live with their disease for a long time, that can mean huge “financial toxicity” associated with treatment and patients still usually have “an awful outcome involving a long death,” he said.

“So CAR T-cell therapy for myeloma will bring a huge change to the practice of oncology,” he added, explaining that the first CAR T-cell therapy approved (tisagenlecleucel, in August 2017) was for pediatric acute lymphoblastic leukemia that had relapsed at least twice. “That’s only about 600 kids a year in the U.S., so it’s an ultra-orphan market,” he said.

With the subsequent approval of axicabtagene ciloleucel (in October 2017) and the anticipated myeloma approval, CAR T-cell therapy will move away from orphan status.
 

 


“There are a lot of difficulties whenever you change to something new,” he said, comparing the CAR T-cell therapy evolution to that of bone marrow transplantation in the 1980s.

Early on, there were only two places in the country where a patient could get a bone marrow transplant – Fred Hutchinson Cancer Center in Seattle and Johns Hopkins University in Baltimore. “Everyone said ‘you’ll never be able to do it routinely, it’s only at these two referral centers,’ because of the skill needed and the intensity of it,” he said. “But over the years, millions of transplants have now been done; they’re done at many community centers. And it’s the same thing with CARs; Novartis now has 30 centers and people have to be trained. It’s a new skill set, and it will take time,” he said.

That can be particularly frustrating because there are many patients with diseases that “might benefit in a major way” from CAR T-cell therapy, but who can’t get on a clinical trial, Dr. June noted.

“There’s more demand than availability, and it’s going to take awhile ... it’s like liver transplants – there aren’t enough donors to go around, so people die, they get on lists, and it’s really hard to see that, but eventually it will get solved,” he said, adding that the solution will most likely involve the complementary use of off-the-shelf CAR T cells in certain patients to induce remission and perhaps provide a bridge to some other definitive therapy, and ultra-personalized CAR T therapy in others, as well as combinations that include CAR T cells and targeted agents or checkpoint inhibitors.
 

 


CRISPR-Cas9 gene editing is also being looked at as a tool for engineering multiple myeloma cellular immunotherapy (and other cancer treatments), as in the Parker Institute–funded NYCE study, Dr. June said.

“We’re actually removing the [programmed death-1] gene and the T-cell receptors ... it shows enormous potential for gene editing. CRISPR is going to be used for a lot of things, but the first use is with T-cell therapies, so we’re really excited about that trial,” he said. “We just opened and we’re screening patients now.”

Dr. June reported royalties and research funding from Novartis and an ownership interest in Tmunity Therapeutics.

 

 

The next major approval in the chimeric antigen receptor (CAR) T-cell therapy arena will target multiple myeloma, and will “completely transform oncology,” according to Carl June, MD.

That approval is anticipated sometime in 2019.

“Myeloma is the most common blood cancer in adults, and there’s never been a curative therapy, but now there is a subset of patients who look like they’re cured with CAR T cells,” Dr. June, the Richard W. Vague Professor in Immunotherapy and a pioneer in CAR T-cell research at the University of Pennsylvania, Philadelphia, said in an interview.

The first treated patient in a trial of a novel anti-B-cell maturation antigen (BCMA)-specific CAR T-cell therapy (CART-BCMA) developed by University of Pennsylvania researchers in collaboration with Novartis is part of that subset.

Woodring Wright, MD, a professor of cell biology and medicine at the University of Texas Southwestern Medical Center (UT Southwestern) in Dallas recently outed himself as that first patient, announcing in a Feb. 14, 2018, UT Southwestern press report that CART-BCMA saved his life.

Dr. Wright, who holds the Southland Financial Corporation Distinguished Chair in Geriatrics at UT Southwestern, was diagnosed with multiple myeloma about 12 years ago and failed 11 prior chemotherapies before he was enrolled in the CART-BCMA trial.

“Now he considers himself cured,” Dr. June said.

 

 


More than 2 years after receiving CART-BCMA he remains cancer free, and is now conducting CAR T-cell-related research in his lab at UT Southwestern in an effort to broaden the effectiveness of current CAR T-cell therapies. Specifically, he is looking at whether the small percentage of patients in whom CAR T-cell therapy does not work might benefit from telomerase to lengthen telomeres, as most patients who fail CAR T-cell therapy are elderly patients who might have terminally short telomeres, UT Southwestern reported.

The ongoing University of Pennsylvania trial led by Adam D. Cohen, MD, director of myeloma immunotherapy at the Abramson Cancer Center, has an overall response rate of 64%; initial phase 1 efficacy and safety results were reported at the American Society of Hematology (ASH) annual meeting in 2016, and multiple companies are currently pursuing registration trials for CAR T therapies in myeloma, Dr. June said.

Among them are bluebird bio and Celgene, which together are developing an anti-BCMA CAR T-cell therapy known as bb2121. That product was granted breakthrough therapy designation by the Food and Drug Administration in November 2017, and will thus receive expedited review. It has also been fast-tracked in Europe.

The decision to fast-track bb2121 in the United States was based on preliminary results from the CRB-410 trial. Updated findings from that trial were presented in December 2017 at ASH and showed an overall response rate of 94% in 21 patients, with 17 of 18 patients who received doses above 50 x 106 CAR+ T cells having an overall response, and 10 of the 18 achieving complete remission. The progression-free survival rates were 81% at 6 months, and 71% at 9 months, with responses deepening over time. The complete response rates were 27% and 56% in May and October of 2017, respectively.
 

 


Responses were durable, lasting more than 1 year in several patients, the investigators reported. Phase 2 of the trial – the global pivotal KarMMA trial – is currently enrolling and will dose patients at between 150 and 350 x 106 CAR+ T cells.

Janssen Biotech Inc. (a Johnson & Johnson company) and Legend Biotech USA Inc./Legend Biotech Ireland Limited (of Genscript Biotech Corporation) have also joined forces to develop an anti-BCMA CAR T-cell product for multiple myeloma, Dr. June said.
Sharon Worcester/MDedge News
Dr. Carl June


The companies announced in December that they had entered into “a worldwide collaboration and license agreement” to develop the CAR T-cell drug candidate.

LCAR-B38M is currently accepted for review by the China Food and Drug Administration and is in the planning phase of clinical studies in the United States for multiple myeloma, according to that announcement.
 

 


The “race between companies” for a CAR T myeloma approval will lead to a welcome addition to the treatment armamentarium, because while myeloma represents only about 2% of all cancers, it is responsible for 7% of cancer costs, Dr. June said.

Since many patients live with their disease for a long time, that can mean huge “financial toxicity” associated with treatment and patients still usually have “an awful outcome involving a long death,” he said.

“So CAR T-cell therapy for myeloma will bring a huge change to the practice of oncology,” he added, explaining that the first CAR T-cell therapy approved (tisagenlecleucel, in August 2017) was for pediatric acute lymphoblastic leukemia that had relapsed at least twice. “That’s only about 600 kids a year in the U.S., so it’s an ultra-orphan market,” he said.

With the subsequent approval of axicabtagene ciloleucel (in October 2017) and the anticipated myeloma approval, CAR T-cell therapy will move away from orphan status.
 

 


“There are a lot of difficulties whenever you change to something new,” he said, comparing the CAR T-cell therapy evolution to that of bone marrow transplantation in the 1980s.

Early on, there were only two places in the country where a patient could get a bone marrow transplant – Fred Hutchinson Cancer Center in Seattle and Johns Hopkins University in Baltimore. “Everyone said ‘you’ll never be able to do it routinely, it’s only at these two referral centers,’ because of the skill needed and the intensity of it,” he said. “But over the years, millions of transplants have now been done; they’re done at many community centers. And it’s the same thing with CARs; Novartis now has 30 centers and people have to be trained. It’s a new skill set, and it will take time,” he said.

That can be particularly frustrating because there are many patients with diseases that “might benefit in a major way” from CAR T-cell therapy, but who can’t get on a clinical trial, Dr. June noted.

“There’s more demand than availability, and it’s going to take awhile ... it’s like liver transplants – there aren’t enough donors to go around, so people die, they get on lists, and it’s really hard to see that, but eventually it will get solved,” he said, adding that the solution will most likely involve the complementary use of off-the-shelf CAR T cells in certain patients to induce remission and perhaps provide a bridge to some other definitive therapy, and ultra-personalized CAR T therapy in others, as well as combinations that include CAR T cells and targeted agents or checkpoint inhibitors.
 

 


CRISPR-Cas9 gene editing is also being looked at as a tool for engineering multiple myeloma cellular immunotherapy (and other cancer treatments), as in the Parker Institute–funded NYCE study, Dr. June said.

“We’re actually removing the [programmed death-1] gene and the T-cell receptors ... it shows enormous potential for gene editing. CRISPR is going to be used for a lot of things, but the first use is with T-cell therapies, so we’re really excited about that trial,” he said. “We just opened and we’re screening patients now.”

Dr. June reported royalties and research funding from Novartis and an ownership interest in Tmunity Therapeutics.

 

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Study: Stick with TMP-SMX for posttransplant PJP prophylaxis

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– Use of atovaquone or pentamidine for Pneumocystis jiroveci pneumonia (PJP) prophylaxis was associated with an increased incidence of nocardiosis in allogeneic hematopoietic stem call transplant (HSCT) recipients at the University of California, Los Angeles, according to a review of patient records.

Of 10 cases of late-onset nocardiosis identified among patients who received HSCT between Jan. 1, 2000, and Aug. 30, 2017, 9 cases occurred in 411 patients (2.2%) treated between 2012 and 2017 – a period of increased use of atovaquone prophylaxis, compared with only 1 in 575 patients (0.17%) treated in the prior 12 years when trimethoprim-sulfamethoxazole (TMP-SMX) was used for prophylaxis, Alfonso Molina reported in a poster at the Acute Leukemia Forum of Hemedicus.

Sharon Worcester/MDedge News
Alfonso Molina
Nocardiosis is rare among allogeneic HSCT recipients, with a reported incidence of 0.3%-1.7%, and the preferred agent for its treatment – TMP-SMX – can also prevent nocardial infections when it is used for PJP prophylaxis following HSCT, Mr. Molina, a medical student at the University of California, Los Angeles, said in an interview. However, beginning in 2012 at UCLA, atovaquone was increasingly used in place of TMP-SMX for PJP prophylaxis, he explained.

None of the 575 patients treated between 2000 and 2012, versus 119 of the 411 treated after 2012, received atovaquone, he reported.

To assess the potential relationship between the use of atovaquone and the increased incidence of nocardiosis, he and his colleagues reviewed patient medical records and UCLA Clinical Microbiology Laboratory culture results.

 

 


Nocardiosis occurred mainly in patients on high doses of corticosteroids for graft-versus-host disease, and 8 of the 10 affected patients were not receiving TMP-SMX for PJP prophylaxis; 7 were on atovaquone, and 1 was on intravenous pentamidine, Mr. Molina said.

The findings suggest that TMP-SMX should remain the agent of choice for PJP prophylaxis in HSCT recipients and have prompted a return to the older protocol of high-dose TMP-SMX for this purpose at UCLA, he said.

“Unless a patient is totally intolerant of TMP-SMX, prophylaxis with atovaquone or pentamidine should be avoided,” he concluded.

Mr. Molina reported having no financial disclosures. The Acute Leukemia Forum is held by Hemedicus, which is owned by the same company as this news organization.

SOURCE: Molina A et al., ALF 2018, Poster Session.

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– Use of atovaquone or pentamidine for Pneumocystis jiroveci pneumonia (PJP) prophylaxis was associated with an increased incidence of nocardiosis in allogeneic hematopoietic stem call transplant (HSCT) recipients at the University of California, Los Angeles, according to a review of patient records.

Of 10 cases of late-onset nocardiosis identified among patients who received HSCT between Jan. 1, 2000, and Aug. 30, 2017, 9 cases occurred in 411 patients (2.2%) treated between 2012 and 2017 – a period of increased use of atovaquone prophylaxis, compared with only 1 in 575 patients (0.17%) treated in the prior 12 years when trimethoprim-sulfamethoxazole (TMP-SMX) was used for prophylaxis, Alfonso Molina reported in a poster at the Acute Leukemia Forum of Hemedicus.

Sharon Worcester/MDedge News
Alfonso Molina
Nocardiosis is rare among allogeneic HSCT recipients, with a reported incidence of 0.3%-1.7%, and the preferred agent for its treatment – TMP-SMX – can also prevent nocardial infections when it is used for PJP prophylaxis following HSCT, Mr. Molina, a medical student at the University of California, Los Angeles, said in an interview. However, beginning in 2012 at UCLA, atovaquone was increasingly used in place of TMP-SMX for PJP prophylaxis, he explained.

None of the 575 patients treated between 2000 and 2012, versus 119 of the 411 treated after 2012, received atovaquone, he reported.

To assess the potential relationship between the use of atovaquone and the increased incidence of nocardiosis, he and his colleagues reviewed patient medical records and UCLA Clinical Microbiology Laboratory culture results.

 

 


Nocardiosis occurred mainly in patients on high doses of corticosteroids for graft-versus-host disease, and 8 of the 10 affected patients were not receiving TMP-SMX for PJP prophylaxis; 7 were on atovaquone, and 1 was on intravenous pentamidine, Mr. Molina said.

The findings suggest that TMP-SMX should remain the agent of choice for PJP prophylaxis in HSCT recipients and have prompted a return to the older protocol of high-dose TMP-SMX for this purpose at UCLA, he said.

“Unless a patient is totally intolerant of TMP-SMX, prophylaxis with atovaquone or pentamidine should be avoided,” he concluded.

Mr. Molina reported having no financial disclosures. The Acute Leukemia Forum is held by Hemedicus, which is owned by the same company as this news organization.

SOURCE: Molina A et al., ALF 2018, Poster Session.

 

– Use of atovaquone or pentamidine for Pneumocystis jiroveci pneumonia (PJP) prophylaxis was associated with an increased incidence of nocardiosis in allogeneic hematopoietic stem call transplant (HSCT) recipients at the University of California, Los Angeles, according to a review of patient records.

Of 10 cases of late-onset nocardiosis identified among patients who received HSCT between Jan. 1, 2000, and Aug. 30, 2017, 9 cases occurred in 411 patients (2.2%) treated between 2012 and 2017 – a period of increased use of atovaquone prophylaxis, compared with only 1 in 575 patients (0.17%) treated in the prior 12 years when trimethoprim-sulfamethoxazole (TMP-SMX) was used for prophylaxis, Alfonso Molina reported in a poster at the Acute Leukemia Forum of Hemedicus.

Sharon Worcester/MDedge News
Alfonso Molina
Nocardiosis is rare among allogeneic HSCT recipients, with a reported incidence of 0.3%-1.7%, and the preferred agent for its treatment – TMP-SMX – can also prevent nocardial infections when it is used for PJP prophylaxis following HSCT, Mr. Molina, a medical student at the University of California, Los Angeles, said in an interview. However, beginning in 2012 at UCLA, atovaquone was increasingly used in place of TMP-SMX for PJP prophylaxis, he explained.

None of the 575 patients treated between 2000 and 2012, versus 119 of the 411 treated after 2012, received atovaquone, he reported.

To assess the potential relationship between the use of atovaquone and the increased incidence of nocardiosis, he and his colleagues reviewed patient medical records and UCLA Clinical Microbiology Laboratory culture results.

 

 


Nocardiosis occurred mainly in patients on high doses of corticosteroids for graft-versus-host disease, and 8 of the 10 affected patients were not receiving TMP-SMX for PJP prophylaxis; 7 were on atovaquone, and 1 was on intravenous pentamidine, Mr. Molina said.

The findings suggest that TMP-SMX should remain the agent of choice for PJP prophylaxis in HSCT recipients and have prompted a return to the older protocol of high-dose TMP-SMX for this purpose at UCLA, he said.

“Unless a patient is totally intolerant of TMP-SMX, prophylaxis with atovaquone or pentamidine should be avoided,” he concluded.

Mr. Molina reported having no financial disclosures. The Acute Leukemia Forum is held by Hemedicus, which is owned by the same company as this news organization.

SOURCE: Molina A et al., ALF 2018, Poster Session.

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Key clinical point: TMP-SMX is the preferred agent for postallogeneic HSCT PJP prophylaxis.

Major finding: The incidence of nocardiosis was 2.2% during atovaquone use versus 0.17% prior to its use.

Study details: A retrospective review of records for 986 patients.

Disclosures: Mr. Molina reported having no financial disclosures.

Source: Molina A et al. ALF 2018, Poster Session.

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High engraftment with new umbilical transplant technique

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– Recipients of hematopoietic cell transplant with umbilical cord blood CD34+ cells expanded with an aryl hydrocarbon receptor (AHR) antagonist had a significantly higher rate of engraftment and comparable survival to a historical cohort of umbilical cord blood recipients.

The robust expansion of donor umbilical cord blood seen with the new technique opens the door for better use of umbilical cord blood inventory with superior human leukocyte antigen (HLA) matching, John Wagner, MD, said at a top abstracts session of the combined annual meetings of the Center for International Blood & Marrow Transplant Research and the American Society for Blood and Marrow Transplantation.

The new technique still shared the benefits of low rates of graft-versus-host disease (GVHD) and high survival that have been seen in previous umbilical cord blood transplants, with no significant difference in overall survival, relapse, or acute or chronic GVHD.

Compared to historical controls (n = 151), patients receiving the AHR antagonist–expanded umbilical cord blood (UCB) cells with myeloablative conditioning (n = 9) saw complete and more rapid engraftment (100% vs. 89% engraftment at a median 14 days vs. 23 days; P less than .01), reported Dr. Wagner of the University of Minnesota, Minneapolis.

These and other results came from two arms of a phase 2 trial of MGTA-456 (the working name of the AHR-expanded UCB cells). Twenty patients were to receive MGTA-456 derived from partially matched umbilical cord blood units after either myeloablative or nonmyeloablative conditioning; one patient in each arm had low expansion of UCB, so a total of 18 patients received MGTA-456. Each intervention arm was compared with a historical control arm that had received conventional UCB units.

In the myeloablative arm, patient demographics and disease characteristics were similar to the control cohort except that the MGTA-456 patients were significantly heavier (93.8 kg vs. 66.7 kg; P less than .04).

 

 

Platelet recovery also rebounded faster with MGTA-456 plus myeloablative conditioning than it did with historical controls: 89% of patients had platelet recovery by a median 46 days, compared with 71% with platelet recovery by a median 64 days in the historical cohort (P less than .01).

Patients achieved rapid complete chimerism if they received myeloablative conditioning, and they had rapid rebound of CD4 counts to at least 200 by 2-3 months posttransplant, Dr. Wagner reported.

The nonmyeloablative arm had a historical control cohort of 132 patients. Characteristics were similar between the two groups except that the MGTA-456 patients were older and more likely to have high-risk disease.

Again, all patients had rapid neutrophil recovery and saw 100% engraftment with MGTA-456. Median time to engraftment was 7 days with MGTA-456 and 15 days for the historical controls (P less than .01). Platelet recovery took longer for the MGTA-456 (median of 47 vs. 107 days), but the difference was not statistically significant.
 

 

Complete chimerism was achieved rapidly with the nonmyeloablative regimen as well, and CD4 recovery was brisk, as had been seen with myeloablative conditioning before MGTA-456 transplantation.

Compared with historical controls, “MGTA-456 retains the benefits of low chronic-graft-versus host disease and high survival despite higher disease risk and age” in the study group, Dr. Wagner said. There were no significant differences between the intervention and historical control arms of the nonmyeloablative study in acute or chronic GVHD, relapse, or overall survival.

The use of MGTA-456 occurs against the backdrop of a history of high survival rates with UCB transplantation – about 70% at 5 years, Dr. Wagner said. However, when conventional culture and expansion methods for UCB were used, the median time to engraftment had been reported to be 25 days with a 79% engraftment rate. This contrasts with the mean 13 days to engraftment for peripheral blood transplants and 18 days for bone marrow transplants. All of these transplant sources, regardless of whether the transplant was matched or mismatched, have engraftment rates of 92%-96%, said Dr. Wagner (Lancet Oncol. 2010; 11[7]:653-60).

When an AHR antagonist is used for UCB expansion, hematopoietic stem cell renewal is upped because cell differentiation is blocked, which means expansion is all driven toward hematopoietic stem cell self-renewal, Dr. Wagner said. Of the 36 available samples, MGTA-456 achieved a median 327-fold expansion of CD34+ cells, which enabled investigators to deliver a median CD34+ dose of 17.5 X 106 cells/kg.
 

 

The downstream effect of the robust expansion rates is that more cord blood will be available for transplantation, and HLA matches will improve, Dr. Wagner said. Using current expansion techniques, fewer than 5% of cord blood units have a total nucleated cell count sufficient for an adult 80 kg recipient, he said, adding that use of MGTA-456 could make more than 80% of cord blood units available for adults.

According to the UCB transplant history at the University of Minnesota – where Dr. Wagner directs the pediatric blood and marrow transplantation program – of the patients who received 4/6 HLA-matched cord blood, 63% would move to a 5/6 match, and 8% would move to a full HLA match with the MGTA-456 technique. Of patients who received 5/6-matched transplants, almost one in four (23%) would move to a full 6/6 match.

Dr. Wagner and his colleagues had previously shown that adding an AHR antagonist resulted in enhanced T-cell recovery and rapid and sustained engraftment (Science. 2010;329:1345-8).

The researchers then proceeded to a phase 1-2, first-in-human trial of MGTA-456 that used a myeloablative conditioning regimen that met its primary safety endpoint of a lack of infusional toxicity or primary/secondary graft failure (Cell Stem Cell. 2016;18:144-55).
 

 

For reasons of safety, this earlier study used a double-transplant platform in which one infusion was uncultured umbilical cord blood and the other was MGTA-456. This study showed rapid neutrophil recovery when MGTA-456 was infused, with median 10.5 days to recovery, compared with a median 26.5 days for historical controls (P less than .001).

Additionally, the study showed a 19-day decrease in duration of the initial hospitalization, and all patients who received MGTA-456 had successful engraftment, Dr. Wagner said. On the strength of these results, the current trials of MGTA-456 alone – with both nonmyeloablative and myeloablative conditioning – were approved.

Multicenter clinical trials of MGTA-456 transplantation are now planned for both malignant and nonmalignant diseases. Enrollment is currently open for a phase 2 clinical trial of MGTA for inherited metabolic disorders (NCT03406962).

The study was funded by Novartis and Magenta Therapeutics. Dr. Wagner reported no other relevant disclosures.
 

SOURCE: Wagner J et al. 2018 BMT Tandem Meetings, Abstract 4.

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– Recipients of hematopoietic cell transplant with umbilical cord blood CD34+ cells expanded with an aryl hydrocarbon receptor (AHR) antagonist had a significantly higher rate of engraftment and comparable survival to a historical cohort of umbilical cord blood recipients.

The robust expansion of donor umbilical cord blood seen with the new technique opens the door for better use of umbilical cord blood inventory with superior human leukocyte antigen (HLA) matching, John Wagner, MD, said at a top abstracts session of the combined annual meetings of the Center for International Blood & Marrow Transplant Research and the American Society for Blood and Marrow Transplantation.

The new technique still shared the benefits of low rates of graft-versus-host disease (GVHD) and high survival that have been seen in previous umbilical cord blood transplants, with no significant difference in overall survival, relapse, or acute or chronic GVHD.

Compared to historical controls (n = 151), patients receiving the AHR antagonist–expanded umbilical cord blood (UCB) cells with myeloablative conditioning (n = 9) saw complete and more rapid engraftment (100% vs. 89% engraftment at a median 14 days vs. 23 days; P less than .01), reported Dr. Wagner of the University of Minnesota, Minneapolis.

These and other results came from two arms of a phase 2 trial of MGTA-456 (the working name of the AHR-expanded UCB cells). Twenty patients were to receive MGTA-456 derived from partially matched umbilical cord blood units after either myeloablative or nonmyeloablative conditioning; one patient in each arm had low expansion of UCB, so a total of 18 patients received MGTA-456. Each intervention arm was compared with a historical control arm that had received conventional UCB units.

In the myeloablative arm, patient demographics and disease characteristics were similar to the control cohort except that the MGTA-456 patients were significantly heavier (93.8 kg vs. 66.7 kg; P less than .04).

 

 

Platelet recovery also rebounded faster with MGTA-456 plus myeloablative conditioning than it did with historical controls: 89% of patients had platelet recovery by a median 46 days, compared with 71% with platelet recovery by a median 64 days in the historical cohort (P less than .01).

Patients achieved rapid complete chimerism if they received myeloablative conditioning, and they had rapid rebound of CD4 counts to at least 200 by 2-3 months posttransplant, Dr. Wagner reported.

The nonmyeloablative arm had a historical control cohort of 132 patients. Characteristics were similar between the two groups except that the MGTA-456 patients were older and more likely to have high-risk disease.

Again, all patients had rapid neutrophil recovery and saw 100% engraftment with MGTA-456. Median time to engraftment was 7 days with MGTA-456 and 15 days for the historical controls (P less than .01). Platelet recovery took longer for the MGTA-456 (median of 47 vs. 107 days), but the difference was not statistically significant.
 

 

Complete chimerism was achieved rapidly with the nonmyeloablative regimen as well, and CD4 recovery was brisk, as had been seen with myeloablative conditioning before MGTA-456 transplantation.

Compared with historical controls, “MGTA-456 retains the benefits of low chronic-graft-versus host disease and high survival despite higher disease risk and age” in the study group, Dr. Wagner said. There were no significant differences between the intervention and historical control arms of the nonmyeloablative study in acute or chronic GVHD, relapse, or overall survival.

The use of MGTA-456 occurs against the backdrop of a history of high survival rates with UCB transplantation – about 70% at 5 years, Dr. Wagner said. However, when conventional culture and expansion methods for UCB were used, the median time to engraftment had been reported to be 25 days with a 79% engraftment rate. This contrasts with the mean 13 days to engraftment for peripheral blood transplants and 18 days for bone marrow transplants. All of these transplant sources, regardless of whether the transplant was matched or mismatched, have engraftment rates of 92%-96%, said Dr. Wagner (Lancet Oncol. 2010; 11[7]:653-60).

When an AHR antagonist is used for UCB expansion, hematopoietic stem cell renewal is upped because cell differentiation is blocked, which means expansion is all driven toward hematopoietic stem cell self-renewal, Dr. Wagner said. Of the 36 available samples, MGTA-456 achieved a median 327-fold expansion of CD34+ cells, which enabled investigators to deliver a median CD34+ dose of 17.5 X 106 cells/kg.
 

 

The downstream effect of the robust expansion rates is that more cord blood will be available for transplantation, and HLA matches will improve, Dr. Wagner said. Using current expansion techniques, fewer than 5% of cord blood units have a total nucleated cell count sufficient for an adult 80 kg recipient, he said, adding that use of MGTA-456 could make more than 80% of cord blood units available for adults.

According to the UCB transplant history at the University of Minnesota – where Dr. Wagner directs the pediatric blood and marrow transplantation program – of the patients who received 4/6 HLA-matched cord blood, 63% would move to a 5/6 match, and 8% would move to a full HLA match with the MGTA-456 technique. Of patients who received 5/6-matched transplants, almost one in four (23%) would move to a full 6/6 match.

Dr. Wagner and his colleagues had previously shown that adding an AHR antagonist resulted in enhanced T-cell recovery and rapid and sustained engraftment (Science. 2010;329:1345-8).

The researchers then proceeded to a phase 1-2, first-in-human trial of MGTA-456 that used a myeloablative conditioning regimen that met its primary safety endpoint of a lack of infusional toxicity or primary/secondary graft failure (Cell Stem Cell. 2016;18:144-55).
 

 

For reasons of safety, this earlier study used a double-transplant platform in which one infusion was uncultured umbilical cord blood and the other was MGTA-456. This study showed rapid neutrophil recovery when MGTA-456 was infused, with median 10.5 days to recovery, compared with a median 26.5 days for historical controls (P less than .001).

Additionally, the study showed a 19-day decrease in duration of the initial hospitalization, and all patients who received MGTA-456 had successful engraftment, Dr. Wagner said. On the strength of these results, the current trials of MGTA-456 alone – with both nonmyeloablative and myeloablative conditioning – were approved.

Multicenter clinical trials of MGTA-456 transplantation are now planned for both malignant and nonmalignant diseases. Enrollment is currently open for a phase 2 clinical trial of MGTA for inherited metabolic disorders (NCT03406962).

The study was funded by Novartis and Magenta Therapeutics. Dr. Wagner reported no other relevant disclosures.
 

SOURCE: Wagner J et al. 2018 BMT Tandem Meetings, Abstract 4.

– Recipients of hematopoietic cell transplant with umbilical cord blood CD34+ cells expanded with an aryl hydrocarbon receptor (AHR) antagonist had a significantly higher rate of engraftment and comparable survival to a historical cohort of umbilical cord blood recipients.

The robust expansion of donor umbilical cord blood seen with the new technique opens the door for better use of umbilical cord blood inventory with superior human leukocyte antigen (HLA) matching, John Wagner, MD, said at a top abstracts session of the combined annual meetings of the Center for International Blood & Marrow Transplant Research and the American Society for Blood and Marrow Transplantation.

The new technique still shared the benefits of low rates of graft-versus-host disease (GVHD) and high survival that have been seen in previous umbilical cord blood transplants, with no significant difference in overall survival, relapse, or acute or chronic GVHD.

Compared to historical controls (n = 151), patients receiving the AHR antagonist–expanded umbilical cord blood (UCB) cells with myeloablative conditioning (n = 9) saw complete and more rapid engraftment (100% vs. 89% engraftment at a median 14 days vs. 23 days; P less than .01), reported Dr. Wagner of the University of Minnesota, Minneapolis.

These and other results came from two arms of a phase 2 trial of MGTA-456 (the working name of the AHR-expanded UCB cells). Twenty patients were to receive MGTA-456 derived from partially matched umbilical cord blood units after either myeloablative or nonmyeloablative conditioning; one patient in each arm had low expansion of UCB, so a total of 18 patients received MGTA-456. Each intervention arm was compared with a historical control arm that had received conventional UCB units.

In the myeloablative arm, patient demographics and disease characteristics were similar to the control cohort except that the MGTA-456 patients were significantly heavier (93.8 kg vs. 66.7 kg; P less than .04).

 

 

Platelet recovery also rebounded faster with MGTA-456 plus myeloablative conditioning than it did with historical controls: 89% of patients had platelet recovery by a median 46 days, compared with 71% with platelet recovery by a median 64 days in the historical cohort (P less than .01).

Patients achieved rapid complete chimerism if they received myeloablative conditioning, and they had rapid rebound of CD4 counts to at least 200 by 2-3 months posttransplant, Dr. Wagner reported.

The nonmyeloablative arm had a historical control cohort of 132 patients. Characteristics were similar between the two groups except that the MGTA-456 patients were older and more likely to have high-risk disease.

Again, all patients had rapid neutrophil recovery and saw 100% engraftment with MGTA-456. Median time to engraftment was 7 days with MGTA-456 and 15 days for the historical controls (P less than .01). Platelet recovery took longer for the MGTA-456 (median of 47 vs. 107 days), but the difference was not statistically significant.
 

 

Complete chimerism was achieved rapidly with the nonmyeloablative regimen as well, and CD4 recovery was brisk, as had been seen with myeloablative conditioning before MGTA-456 transplantation.

Compared with historical controls, “MGTA-456 retains the benefits of low chronic-graft-versus host disease and high survival despite higher disease risk and age” in the study group, Dr. Wagner said. There were no significant differences between the intervention and historical control arms of the nonmyeloablative study in acute or chronic GVHD, relapse, or overall survival.

The use of MGTA-456 occurs against the backdrop of a history of high survival rates with UCB transplantation – about 70% at 5 years, Dr. Wagner said. However, when conventional culture and expansion methods for UCB were used, the median time to engraftment had been reported to be 25 days with a 79% engraftment rate. This contrasts with the mean 13 days to engraftment for peripheral blood transplants and 18 days for bone marrow transplants. All of these transplant sources, regardless of whether the transplant was matched or mismatched, have engraftment rates of 92%-96%, said Dr. Wagner (Lancet Oncol. 2010; 11[7]:653-60).

When an AHR antagonist is used for UCB expansion, hematopoietic stem cell renewal is upped because cell differentiation is blocked, which means expansion is all driven toward hematopoietic stem cell self-renewal, Dr. Wagner said. Of the 36 available samples, MGTA-456 achieved a median 327-fold expansion of CD34+ cells, which enabled investigators to deliver a median CD34+ dose of 17.5 X 106 cells/kg.
 

 

The downstream effect of the robust expansion rates is that more cord blood will be available for transplantation, and HLA matches will improve, Dr. Wagner said. Using current expansion techniques, fewer than 5% of cord blood units have a total nucleated cell count sufficient for an adult 80 kg recipient, he said, adding that use of MGTA-456 could make more than 80% of cord blood units available for adults.

According to the UCB transplant history at the University of Minnesota – where Dr. Wagner directs the pediatric blood and marrow transplantation program – of the patients who received 4/6 HLA-matched cord blood, 63% would move to a 5/6 match, and 8% would move to a full HLA match with the MGTA-456 technique. Of patients who received 5/6-matched transplants, almost one in four (23%) would move to a full 6/6 match.

Dr. Wagner and his colleagues had previously shown that adding an AHR antagonist resulted in enhanced T-cell recovery and rapid and sustained engraftment (Science. 2010;329:1345-8).

The researchers then proceeded to a phase 1-2, first-in-human trial of MGTA-456 that used a myeloablative conditioning regimen that met its primary safety endpoint of a lack of infusional toxicity or primary/secondary graft failure (Cell Stem Cell. 2016;18:144-55).
 

 

For reasons of safety, this earlier study used a double-transplant platform in which one infusion was uncultured umbilical cord blood and the other was MGTA-456. This study showed rapid neutrophil recovery when MGTA-456 was infused, with median 10.5 days to recovery, compared with a median 26.5 days for historical controls (P less than .001).

Additionally, the study showed a 19-day decrease in duration of the initial hospitalization, and all patients who received MGTA-456 had successful engraftment, Dr. Wagner said. On the strength of these results, the current trials of MGTA-456 alone – with both nonmyeloablative and myeloablative conditioning – were approved.

Multicenter clinical trials of MGTA-456 transplantation are now planned for both malignant and nonmalignant diseases. Enrollment is currently open for a phase 2 clinical trial of MGTA for inherited metabolic disorders (NCT03406962).

The study was funded by Novartis and Magenta Therapeutics. Dr. Wagner reported no other relevant disclosures.
 

SOURCE: Wagner J et al. 2018 BMT Tandem Meetings, Abstract 4.

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REPORTING FROM THE 2018 BMT TANDEM MEETINGS

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Key clinical point: A new expansion technique improved engraftment for umbilical cord blood transplants.

Major finding: The engraftment rate was 100% with both myeloablative and nonmyeloablative conditioning.

Study details: A phase 2 trial of 20 patients receiving MGTA-456, compared with a historical cohort of umbilical cord blood hematopoietic cell transplant recipients.

Disclosures: The study was sponsored by Novartis and Magenta Therapeutics. Dr. Wagner reported no other conflicts of interest.

Source: Wagner J et al. 2018 BMT Tandem Meetings, Abstract 4.

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