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Lewis KL, Cheah CY. The value of bispecific antibodies in relapsed and refractory DLBCL. Leuk Lymphoma 2024:1-16. [PMID: 38454535 DOI: 10.1080/10428194.2024.2323085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 02/19/2024] [Indexed: 03/09/2024]
Abstract
Diffuse large B-cell lymphoma (DLBCL) may be cured with anti-CD20 based chemoimmunotherapy in the majority of cases, however, relapsed/refractory disease occurs in 30-40% patients, and despite significant recent therapeutic advances, continues to represent an unmet clinical need. Bispecific antibodies represent a novel class of therapy currently in development for relapsed/refractory B-cell lymphoma. This review discusses the background clinical need, mechanism of action, and clinical data including efficacy and toxicity for bispecific antibodies in DLBCL, focusing on the most advanced class in development; CD20 targeting T-cell engaging antibodies. Emerging possibilities for future use of bispecific antibodies is also discussed, including novel and cytotoxic combination regimens in relapsed and first-line settings.
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Affiliation(s)
- Katharine Louise Lewis
- Department of Haematology, Sir Charles Gairdner Hospital, Nedlands, Australia
- Linear Clinical Research, Nedlands, Australia
- Medical School, Division of Internal Medicine, University of Western Australia, Nedlands, Australia
| | - Chan Yoon Cheah
- Department of Haematology, Sir Charles Gairdner Hospital, Nedlands, Australia
- Linear Clinical Research, Nedlands, Australia
- Medical School, Division of Internal Medicine, University of Western Australia, Nedlands, Australia
- Department of Haematology, Pathwest, QEII, Nedlands, Australia
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Lewis KL, Cheah CY. About time: why central nervous system prophylaxis timing in diffuse large B-cell lymphoma matters and does the protocol need updating? Expert Rev Hematol 2022; 15:959-962. [PMID: 36278876 DOI: 10.1080/17474086.2022.2140138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Katharine Louise Lewis
- Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia.,University of Western Australia, Nedlands, Western Australia, Australia.,Linear Clinical Research, Nedlands, Western Australia, Australia
| | - Chan Yoon Cheah
- Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia.,University of Western Australia, Nedlands, Western Australia, Australia.,Pathwest, Nedlands, Western Australia, Australia
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Lawal TA, Lewis KL, Johnston JJ, Heidlebaugh AR, Ng D, Gaston-Johansson FG, Klein WMP, Biesecker BB, Biesecker LG. Disclosure of cardiac variants of uncertain significance results in an exome cohort. Clin Genet 2018; 93:1022-1029. [PMID: 29383714 DOI: 10.1111/cge.13220] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Revised: 01/19/2018] [Accepted: 01/25/2018] [Indexed: 01/26/2023]
Abstract
This study examined the impact of disclosing subclassifications of genetic variants of uncertain significance (VUS) on behavioral intentions. We studied return of VUS results to 79 individuals with a cardiomyopathy-associated VUS, subclassified into VUS-high or VUS-low. Primary outcomes were perceived risk (absolute and comparative), perceived severity, perceived value of information, self-efficacy, decision regret, and behavioral intentions to share results and change behaviors. There was no significant difference between the 2 subclasses in overall behavioral intentions (t = 0.023, P = .982) and each of the individual items on the behavioral intentions scale; absolute (t = -1.138, P = .259) or comparative (t = -0.463, P = .645) risk perceptions; perceived value of information (t = 0.582, P = .563) and self-efficacy (t = -0.733, P = .466). Decision regret was significantly different (t = 2.148, P = .035), with VUS-low (mean = 17.24, SD = 16.08) reporting greater regret. Combining the subclasses, perceived value of information was the strongest predictor of behavioral intentions (β = 0.524, P < .001). Participants generally understood the meaning of a genetic VUS result classification and reported satisfaction with result disclosure. No differences in behavioral intentions were found, but differences in decision regret suggest participants distinguish subclasses of VUS results. The perceived value of VUS may motivate recipients to pursue health-related behaviors.
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Affiliation(s)
- T A Lawal
- National Institute of Nursing Research, National Institutes of Health (NIH), Bethesda, Maryland
| | - K L Lewis
- Medical Genomics and Metabolic Genetics Branch, National Human Genome Research Institute, NIH, Bethesda, Maryland
| | - J J Johnston
- Medical Genomics and Metabolic Genetics Branch, National Human Genome Research Institute, NIH, Bethesda, Maryland
| | - A R Heidlebaugh
- Social and Behavioral Research Branch, National Human Genome Research Institute, NIH, Bethesda, Maryland
| | - D Ng
- Medical Genomics and Metabolic Genetics Branch, National Human Genome Research Institute, NIH, Bethesda, Maryland
| | - F G Gaston-Johansson
- Department of Acute and Chronic Care, Johns Hopkins University School of Nursing, Baltimore, Maryland
| | - W M P Klein
- Behavioral Research Program, National Cancer Institute, NIH, Bethesda, Maryland
| | - B B Biesecker
- Social and Behavioral Research Branch, National Human Genome Research Institute, NIH, Bethesda, Maryland
| | - L G Biesecker
- Medical Genomics and Metabolic Genetics Branch, National Human Genome Research Institute, NIH, Bethesda, Maryland
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Kohler JN, Turbitt E, Lewis KL, Wilfond BS, Jamal L, Peay HL, Biesecker LG, Biesecker BB. Defining personal utility in genomics: A Delphi study. Clin Genet 2017; 92:290-297. [PMID: 28218387 DOI: 10.1111/cge.12998] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 02/13/2017] [Accepted: 02/14/2017] [Indexed: 01/22/2023]
Abstract
BACKGROUND Individual genome sequencing results are valued by patients in ways distinct from clinical utility. Such outcomes have been described as components of "personal utility," a concept that broadly encompasses patient-endorsed benefits, that is operationally defined as non-clinical outcomes. No empirical delineation of these outcomes has been reported. AIM To address this gap, we administered a Delphi survey to adult participants in a National Institute of Health (NIH) clinical exome study to extract the most highly endorsed outcomes constituting personal utility. MATERIALS AND METHODS Forty research participants responded to a Delphi survey to rate 35 items identified by a systematic literature review of personal utility. RESULTS Two rounds of ranking resulted in 24 items that represented 14 distinct elements of personal utility. Elements most highly endorsed by participants were: increased self-knowledge, knowledge of "the condition," altruism, and anticipated coping. DISCUSSION Our findings represent the first systematic effort to delineate elements of personal utility that may be used to anticipate participant expectation and inform genetic counseling prior to sequencing. The 24 items reported need to be studied further in additional clinical genome sequencing studies to assess generalizability in other populations. Further research will help to understand motivations and to predict the meaning and use of results.
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Affiliation(s)
- J N Kohler
- Social and Behavioral Research Branch, National Human Genome Research Institute, National Institutes Health, Bethesda, Maryland
| | - E Turbitt
- Social and Behavioral Research Branch, National Human Genome Research Institute, National Institutes Health, Bethesda, Maryland
| | - K L Lewis
- Medical Genomics and Metabolic Genetics Branch, National Human Genome Research Institute, National Institutes Health, Bethesda, Maryland
| | - B S Wilfond
- Treuman Katz Center for Pediatric Bioethics, Seattle Children's Research Institute, Seattle, Washington
| | - L Jamal
- Johns Hopkins Berman Institute of Bioethics, Baltimore, Maryland
| | - H L Peay
- RTI International, Research Triangle Park, Durham, North Carolina
| | - L G Biesecker
- Medical Genomics and Metabolic Genetics Branch, National Human Genome Research Institute, National Institutes Health, Bethesda, Maryland
| | - B B Biesecker
- Social and Behavioral Research Branch, National Human Genome Research Institute, National Institutes Health, Bethesda, Maryland
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Biesecker BB, Woolford SW, Klein WMP, Brothers KB, Umstead KL, Lewis KL, Biesecker LG, Han PKJ. PUGS: A novel scale to assess perceptions of uncertainties in genome sequencing. Clin Genet 2017; 92:172-179. [PMID: 27925165 DOI: 10.1111/cge.12949] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 11/30/2016] [Accepted: 12/01/2016] [Indexed: 01/25/2023]
Abstract
Expectations of results from genome sequencing by end users are influenced by perceptions of uncertainty. This study aimed to assess uncertainties about sequencing by developing, evaluating, and implementing a novel scale. The Perceptions of Uncertainties in Genome Sequencing (PUGS) scale comprised ten items to assess uncertainties within three domains: clinical, affective, and evaluative. Participants (n=535) from the ClinSeq® NIH sequencing study completed a baseline survey that included the PUGS; responses (mean = 3.4/5, SD=0.58) suggested modest perceptions of certainty. A confirmatory factor analysis identified factor loadings that led to elimination of two items. A revised eight-item PUGS scale was used to test correlations with perceived ambiguity (r = -0.303, p < 0.001), attitudinal ambivalence (r = -0.111, p = 0.011), and ambiguity aversion (r = -0.093, p = 0.033). Results support nomological validity. A correlation with the MICRA uncertainty subscale was found among 175 cohort participants who had received results (r = -0.335, p < 0.001). Convergent and discriminant validity were also satisfied in a second sample of 208 parents from the HudsonAlpha CSER Project who completed the PUGS (mean = 3.4/5, SD = 0.72), and configural invariance was supported across the two datasets. As such, the PUGS is a promising scale for evaluating perceived uncertainties in genome sequencing, which can inform interventions to help patients form realistic expectations of these uncertainties.
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Affiliation(s)
- B B Biesecker
- Social and Behavioral Research Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - S W Woolford
- Mathematical Sciences, Bentley University, Waltham, MA, USA
| | - W M P Klein
- Division of Cancer Control and Population Sciences, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - K B Brothers
- Department of Pediatrics, University of Louisville School of Medicine, Louisville, KY, USA
| | - K L Umstead
- Social and Behavioral Research Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - K L Lewis
- Medical Genomics and Metabolic Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - L G Biesecker
- Medical Genomics and Metabolic Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - P K J Han
- Maine Medical Center Research Institute, Center for Outcomes Research and Evaluation, New Haven, CT, USA
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Lewis KL. Development of Indicators to Assess Quality of Life in a Community Setting. Am J Epidemiol 2006. [DOI: 10.1093/aje/163.suppl_11.s64-d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Affiliation(s)
- P B Vrtunski
- Research Service, Cleveland VA Medical Center, Brecksville, OH 44141
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Lewis KL, Muirhead IT, Pitt AM, Cullis AG, Chew NG, Miller A, Wyatt-Davies TJ. Molecular beam deposition of optical coatings and their characterization. Appl Opt 1989; 28:2785-2790. [PMID: 20555599 DOI: 10.1364/ao.28.002785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Significant improvements can be made in the fabrication of optical thin film structures by using molecular beam and ultrahigh vacuum techniques. These lead to the achievement of more stable films and multilayer coatings with improved morphology, density, and resistance to laser-induced damage. The microstructure of the film can be controlled to a high degree by using quasisuperlattice techniques, which also provide a means of refractive index synthesis. This can be applied to simple graded structures or complex periodic gradings as required for Bragglike structures. Etalon filters fabricated using the technique have been used for optical bistability experiments and have exhibited stable operation for periods of many hours under continuous cycling.
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Muirhead IT, Miller A, Lewis KL, Staromlynska J, Welford K. Molecular beam deposited bistable interference filters. Appl Opt 1989; 28:2796-2799. [PMID: 20555601 DOI: 10.1364/ao.28.002796] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Ultrahigh vacuum and molecular beam deposition techniques have been used to fabricate ZnSe interference filters. These demonstrate optical bistability with critical switching power being measured at five wavelengths between 521 and 676 nm. These filters demonstrate considerably improved long term operation stability over that offered by samples deposited using conventional thermal evaporation. Both dispersive and absorptive bistability could be demonstrated in the same sample.
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Abstract
Three patients with toxemia developed acute neurologic deterioration postpartum. In all, cerebral angiography revealed widespread arterial vasoconstriction. Cerebral vasoconstriction may be an important cause of neurologic complications in toxemia.
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Banes D, Ensminger LG, Hoffman I, Horwitz W, Lewis KL, Mathers AP, Poundstone B, Schechter MS, Randle SB. Report of the Committee on AOAC Missions. J AOAC Int 1970. [DOI: 10.1093/jaoac/53.2.411a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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