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Bader CS, Pavlova A, Lowsky R, Muffly LS, Shiraz P, Arai S, Johnston LJ, Rezvani AR, Weng WK, Miklos DB, Frank MJ, Tamaresis JS, Agrawal V, Bharadwaj S, Sidana S, Shizuru JA, Fernhoff NB, Putnam A, Killian S, Xie BJ, Negrin RS, Meyer EH. Single-center randomized trial of T-reg graft alone vs T-reg graft plus tacrolimus for the prevention of acute GVHD. Blood Adv 2024; 8:1105-1115. [PMID: 38091578 PMCID: PMC10907400 DOI: 10.1182/bloodadvances.2023011625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 11/27/2023] [Indexed: 02/29/2024] Open
Abstract
ABSTRACT Allogeneic hematopoietic cell transplantation (HCT) is a curative therapy for hematological malignancies for which graft-versus-host disease (GVHD) remains a major complication. The use of donor T-regulatory cells (Tregs) to prevent GVHD appears promising, including in our previous evaluation of an engineered graft product (T-reg graft) consisting of the timed, sequential infusion of CD34+ hematopoietic stem cells and high-purity Tregs followed by conventional T cells. However, whether immunosuppressive prophylaxis can be removed from this protocol remains unclear. We report the results of the first stage of an open-label single-center phase 2 study (NCT01660607) investigating T-reg graft in myeloablative HCT of HLA-matched and 9/10-matched recipients. Twenty-four patients were randomized to receive T-reg graft alone (n = 12) or T-reg graft plus single-agent GVHD prophylaxis (n = 12) to determine whether T-reg graft alone was noninferior in preventing acute GVHD. All patients developed full-donor myeloid chimerism. Patients with T-reg graft alone vs with prophylaxis had incidences of grade 3 to 4 acute GVHD of 58% vs 8% (P = .005) and grade 3 to 4 of 17% vs 0% (P = .149), respectively. The incidence of moderate-to-severe chronic GVHD was 28% in the T-reg graft alone arm vs 0% with prophylaxis (P = .056). Among patients with T-reg graft and prophylaxis, CD4+ T-cell-to-Treg ratios were reduced after transplantation, gene expression profiles showed reduced CD4+ proliferation, and the achievement of full-donor T-cell chimerism was delayed. This study indicates that T-reg graft with single-agent tacrolimus is preferred over T-reg graft alone for the prevention of acute GVHD. This trial was registered at www.clinicaltrials.gov as #NCT01660607.
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Affiliation(s)
- Cameron S. Bader
- Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA
| | - Anna Pavlova
- Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA
| | - Robert Lowsky
- Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA
- Cellular Immune Tolerance Program, Stanford Department of Medicine, Stanford University, Stanford, CA
| | - Lori S. Muffly
- Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA
| | - Parveen Shiraz
- Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA
| | - Sally Arai
- Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA
- Cellular Immune Tolerance Program, Stanford Department of Medicine, Stanford University, Stanford, CA
| | - Laura J. Johnston
- Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA
| | - Andrew R. Rezvani
- Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA
| | - Wen-Kai Weng
- Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA
- Cellular Immune Tolerance Program, Stanford Department of Medicine, Stanford University, Stanford, CA
| | - David B. Miklos
- Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA
| | - Matthew J. Frank
- Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA
| | | | - Vaibhav Agrawal
- Department of Hematology and Hematopoietic Stem Cell Transplantation, City of Hope, Duarte, CA
| | - Sushma Bharadwaj
- Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA
| | - Surbhi Sidana
- Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA
| | - Judith A. Shizuru
- Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA
| | | | | | | | | | - Robert S. Negrin
- Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA
- Cellular Immune Tolerance Program, Stanford Department of Medicine, Stanford University, Stanford, CA
| | - Everett H. Meyer
- Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA
- Cellular Immune Tolerance Program, Stanford Department of Medicine, Stanford University, Stanford, CA
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Olivier MR, Killian S, Chiliza B, Asmal L, Schoeman R, Oosthuizen PP, Kidd M, Emsley R. Cognitive performance during the first year of treatment in first-episode schizophrenia: a case-control study. Psychol Med 2015; 45:2873-2883. [PMID: 25998030 DOI: 10.1017/s0033291715000860] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Several questions remain unanswered regarding the magnitude and time course of cognitive improvement in response to antipsychotic treatment. The purpose of this study was to assess changes in cognitive performance in antipsychotic-naive or minimally medicated patients with first-episode schizophrenia during the first 12 months of treatment, in a case-control design. Patients were treated with flupenthixol decanoate depot injection, according to a standard algorithm. The primary outcome measure was change in MATRICS Cognitive Consensus Battery (MCCB) composite score over 12 months. METHOD The sample comprised 92 patients and 100 healthy controls matched for age, sex, ethnicity and educational status. Cognitive function was assessed by means of the MCCB. RESULTS A mixed-effects model identified a significant group × time effect (p ≤ 0.0001) for the MCCB composite score, with patients showing a greater degree of change than the controls. For the other MCCB domains there were significant group × time effects at adjusted significance level for attention and vigilance (p ≤ 0.0001), visual learning (p ≤ 0.0001), verbal learning (p = 0.005) and working memory (p ≤ 0.0001), but not for reasoning and problem solving (p = 0.04), speed of processing (p = 0.03) and social cognition (p = 0.06). There were moderate correlations between change in MCCB composite score and change in symptomatology as assessed by Positive and Negative Syndrome Scale factor analysis-derived domains. CONCLUSIONS Substantial improvements in cognitive function were observed over and above a practice effect, and were significantly correlated with improvements in psychopathology and functionality.
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Affiliation(s)
- M R Olivier
- Department of Psychiatry,Faculty of Medicine and Health Sciences,Stellenbosch University,Tygerberg Campus,Cape Town,South Africa
| | - S Killian
- Department of Psychiatry,Faculty of Medicine and Health Sciences,Stellenbosch University,Tygerberg Campus,Cape Town,South Africa
| | - B Chiliza
- Department of Psychiatry,Faculty of Medicine and Health Sciences,Stellenbosch University,Tygerberg Campus,Cape Town,South Africa
| | - L Asmal
- Department of Psychiatry,Faculty of Medicine and Health Sciences,Stellenbosch University,Tygerberg Campus,Cape Town,South Africa
| | - R Schoeman
- Department of Psychiatry,Faculty of Medicine and Health Sciences,Stellenbosch University,Tygerberg Campus,Cape Town,South Africa
| | - P P Oosthuizen
- Department of Psychiatry,Faculty of Medicine and Health Sciences,Stellenbosch University,Tygerberg Campus,Cape Town,South Africa
| | - M Kidd
- Centre for Statistical Consultation,Stellenbosch University,South Africa
| | - R Emsley
- Department of Psychiatry,Faculty of Medicine and Health Sciences,Stellenbosch University,Tygerberg Campus,Cape Town,South Africa
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Jamieson BD, Yang OO, Hultin L, Hausner MA, Hultin P, Matud J, Kunstman K, Killian S, Altman J, Kommander K, Korber B, Giorgi J, Wolinsky S. Epitope escape mutation and decay of human immunodeficiency virus type 1-specific CTL responses. J Immunol 2004; 171:5372-9. [PMID: 14607940 DOI: 10.4049/jimmunol.171.10.5372] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
To investigate possible mechanisms behind HIV-1 escape from CTL, we performed detailed longitudinal analysis of Gag (SLYNTVATL)- and RT (ILKEPVHGV)-specific CTL responses and plasma epitope sequences in five individuals. Among those with CTL against consensus epitope sequences, epitope mutations developed over several years, invariably followed by decay of the CTL targeting the consensus epitopes. The maturation state of the CTL varied among individuals and appeared to affect the rate of epitope mutation and CTL decay, despite similar IFN-gamma production. Escape mutations were oligoclonal, suggesting fitness constraints. The timing of escape indicated that the net selective advantage of escape mutants was slight, further underscoring the importance of understanding factors determining selective pressure and viral fitness in vivo. Our data show surprisingly consistent decay of CTL responses after epitope escape mutation and provide insight into potential mechanisms for both immune failure and shifting CTL specificities.
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MESH Headings
- Adult
- Amino Acid Sequence
- CD8-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/pathology
- CD8-Positive T-Lymphocytes/virology
- Cell Differentiation/genetics
- Cell Differentiation/immunology
- Cytotoxicity, Immunologic/genetics
- Epitopes, T-Lymphocyte/genetics
- Epitopes, T-Lymphocyte/immunology
- Evolution, Molecular
- Gene Products, gag/genetics
- Gene Products, gag/immunology
- Gene Products, pol/genetics
- Gene Products, pol/immunology
- Genetic Variation/immunology
- HIV Seropositivity/genetics
- HIV Seropositivity/immunology
- HIV Seropositivity/virology
- HIV-1/genetics
- HIV-1/immunology
- Humans
- Interferon-gamma/biosynthesis
- Lymphocyte Count
- Male
- Molecular Sequence Data
- Mutation
- Peptide Fragments/genetics
- Peptide Fragments/immunology
- Phylogeny
- Sequence Alignment
- T-Lymphocytes, Cytotoxic/immunology
- T-Lymphocytes, Cytotoxic/pathology
- T-Lymphocytes, Cytotoxic/virology
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Affiliation(s)
- Beth D Jamieson
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA.
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Abstract
Reconstituting the immune response will be critical for the survival of HIV-infected individuals once viral load is brought under control. While the adult thymus was previously thought to be relatively inactive, new data suggest it may play a role in T cell reconstitution. We examined thymopoiesis in adults up to 56 years of age and found active T cell receptor (TCR) rearrangement, generating a diverse TCR Vbeta repertoire. The resulting thymocytes are functional and are capable of responding to costimulatory signals. These data demonstrate that the adult thymus remains active late in life and contributes functional T cells to the peripheral lymphoid pool.
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Affiliation(s)
- B D Jamieson
- Department of Medicine, UCLA School of Medicine and Jonsson Comprehensive Cancer Center, Los Angeles, California 90095-1678, USA.
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Espinel-Ingroff A, Pfaller M, Messer SA, Knapp CC, Killian S, Norris HA, Ghannoum MA. Multicenter comparison of the sensititre YeastOne Colorimetric Antifungal Panel with the National Committee for Clinical Laboratory standards M27-A reference method for testing clinical isolates of common and emerging Candida spp., Cryptococcus spp., and other yeasts and yeast-like organisms. J Clin Microbiol 1999; 37:591-5. [PMID: 9986817 PMCID: PMC84481 DOI: 10.1128/jcm.37.3.591-595.1999] [Citation(s) in RCA: 97] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
National Committee for Clinical Laboratory Standards (NCCLS) standard guidelines are available for the antifungal susceptibility testing of common Candida spp. and Cryptococcus neoformans, but NCCLS methods may not be the most efficient and convenient procedures for use in the clinical laboratory. MICs of amphotericin B, fluconazole, flucytosine, itraconazole, and ketoconazole were determined by the commercially prepared Sensititre YeastOne Colorimetric Antifungal Panel and by the NCCLS M27-A broth microdilution method for 1,176 clinical isolates of yeasts and yeast-like organisms, including Blastoschizomyces capitatus, Cryptococcus spp., 14 common and emerging species of Candida, Hansenula anomala, Rhodotorula spp., Saccharomyces cerevisiae, Sporobolomyces salmonicolor, and Trichosporon beigelii. Colorimetric MICs of amphotericin B corresponded to the first blue well (no growth), and MICs of the other agents corresponded to the first purple or blue well. Three comparisons of MIC pairs by the two methods were evaluated to obtain percentages of agreement: 24- and 48-h MICs and 24-h colorimetric versus 48-h reference MICs. The best performance of the YeastOne panel was with 24-h MICs (92 to 100%) with the azoles and flucytosine for all the species tested, with the exception of C. albicans (87 to 90%). For amphotericin B, the best agreement between the methods was with 48-h MIC pairs (92 to 99%) for most of the species tested. The exception was for isolates of C. neoformans (76%). These data suggest the potential value of the YeastOne panel for use in the clinical laboratory.
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Affiliation(s)
- A Espinel-Ingroff
- Medical College of Virginia of Virginia Commonwealth University, Richmond, Virginia, USA.
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Tomori O, Bertolli J, Rollin PE, Fleerackers Y, Guimard Y, De Roo A, Feldmann H, Burt F, Swanepoel R, Killian S, Khan AS, Tshioko K, Bwaka M, Ndambe R, Peters CJ, Ksiazek TG. Serologic survey among hospital and health center workers during the Ebola hemorrhagic fever outbreak in Kikwit, Democratic Republic of the Congo, 1995. J Infect Dis 1999; 179 Suppl 1:S98-101. [PMID: 9988171 DOI: 10.1086/514307] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
From May to July 1995, a serologic and interview survey was conducted to describe Ebola hemorrhagic fever (EHF) among personnel working in 5 hospitals and 26 health care centers in and around Kikwit, Democratic Republic of the Congo. Job-specific attack rates estimated for Kikwit General Hospital, the epicenter of the EHF epidemic, were 31% for physicians, 11% for technicians/room attendants, 10% for nurses, and 4% for other workers. Among 402 workers who did not meet the EHF case definition, 12 had borderline positive antibody test results; subsequent specimens from 4 of these tested negative. Although an old infection with persistent Ebola antibody production or a recent atypical or asymptomatic infection cannot be ruled out, if they occur at all, they appear to be rare. This survey demonstrated that opportunities for transmission of Ebola virus to personnel in health facilities existed in Kikwit because blood and body fluid precautions were not being universally followed.
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Affiliation(s)
- O Tomori
- World Health Organization, Harare, Zimbabwe
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