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Li P, Chen B, Zhao L, Yang F, Zhang Z, Cao Y, Hu Y. Correlations of FCGR2A 131R/H and FCGR3A 158V/F Polymorphisms with the Susceptibility of Peri-implantitis in Chinese Han Population. Mol Biotechnol 2024:10.1007/s12033-024-01193-8. [PMID: 38771420 DOI: 10.1007/s12033-024-01193-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 04/30/2024] [Indexed: 05/22/2024]
Abstract
The purpose of the study is to investigate the relationship of peri-implantitis (PI) with FCGR2A and FCGR3A gene polymorphisms. One hundred and forty-four patients with PI and 136 patients without PI infection were selected. Gingival crevicular fluid samples were collected from the two groups. The FCGR2A and FCGR3A polymorphism in the two groups were measured. All volunteers were evaluated for periodontal status. The effect of polymorphisms on PI susceptibility was investigated by chi-square analysis and logistic regression. The frequency of FCGR2A rs1801274 GG genotype of PI group was higher than that of the control group, while the GA and AA genotype carriers were less in PI group. After adjusting for other clinical indicators, rs1801274 GA genotype, AA genotype, and the A allele were still negatively correlated with the onset of PI. FCGR3A rs396991 polymorphism was not associated with PI. FCGR2A rs1801274 polymorphism was significantly associated with PI in the Chinese Han population, and GG genotype might be a genetic risk factor for PI.
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Affiliation(s)
- Peng Li
- Department One of Oral and Maxillofacial Surgery, Affiliated Hospital of Tangshan Vocational and Technical College, Tangshan, 063000, China
| | - Bingzhuo Chen
- Fifth Outpatient Department, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, 210019, China
| | - Liang Zhao
- Department of Stomatology, Central Hospital Affiliated to Shenyang Medical College, No.5, Nanqizi Road, Tiexi District, Shenyang, 110026, China
| | - Feng Yang
- Department of Stomatology, Central Hospital Affiliated to Shenyang Medical College, No.5, Nanqizi Road, Tiexi District, Shenyang, 110026, China
| | - Zhu Zhang
- Department of Stomatology, Central Hospital Affiliated to Shenyang Medical College, No.5, Nanqizi Road, Tiexi District, Shenyang, 110026, China
| | - Yuan Cao
- Department of Stomatology, Central Hospital Affiliated to Shenyang Medical College, No.5, Nanqizi Road, Tiexi District, Shenyang, 110026, China.
| | - Yang Hu
- Department of Oral Restoration and Implantation, First Affiliated Hospital of Xinjiang Medical University/Affiliated Stomatological Hospital, Urumqi, 830054, China.
- Xinjiang Uygur Autonomous Region, Institute of Stomatology, No. 137, Liyushan South Road, Xinshi District, Urumqi, 830054, China.
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2
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Arora J, Ayyappan S, Yin C, Smith BJ, Lemke-Miltner CD, Wang Z, Farooq U, Weiner GJ. T-cell help in the tumor microenvironment enhances rituximab-mediated NK-cell ADCC. Blood 2024; 143:1816-1824. [PMID: 38457360 PMCID: PMC11076912 DOI: 10.1182/blood.2023023370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 02/20/2024] [Accepted: 02/23/2024] [Indexed: 03/10/2024] Open
Abstract
ABSTRACT Rituximab (RTX) and other monoclonal antibodies (mAbs) that bind directly to malignant cells are of great clinical value but are not effective for all patients. A major mechanism of action of RTX is antibody-dependent cellular cytotoxicity (ADCC) mediated by natural killer (NK) cells. Prior in vitro studies in our laboratory demonstrated that T cells contribute to maintaining the viability and cytotoxic potential of NK cells activated by anti-CD20-coated target B cells. Here, we conducted studies using a novel mouse model and clinical correlative analysis to assess whether T-cell help contribute to RTX-mediated NK-cell ADCC in the tumor microenvironment (TME) in vivo. A humanized mouse model was developed using Raji lymphoma cells and normal donor peripheral blood mononuclear cells that allows for control of T-cell numbers in the lymphoma TME. In this model, NK-cell viability and CD16 and CD25 expression dropped after RTX in the absence of T cells but increased in the presence of T cells. RTX therapy was more effective when T cells were present and was ineffective when NK cells were depleted. In patients with indolent lymphoma, fine needle aspirates were obtained before and ∼1 week after treatment with a RTX-containing regimen. There was a strong correlation between CD4+ T cells as well as total T cells in the pretherapy TME and an increase in NK-cell CD16 and CD25 expression after RTX. We conclude that T-cell help in the TME enhances RTX-mediated NK-cell viability and ADCC.
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Affiliation(s)
- Jyoti Arora
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA
- Interdisciplinary Graduate Program in Human Toxicology, University of Iowa, Iowa City, IA
| | - Sabarish Ayyappan
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA
- Department of Internal Medicine, University of Iowa, Iowa City, IA
| | - Chaobo Yin
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA
| | - Brian J. Smith
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA
- Department of Biostatistics, University of Iowa, Iowa City, IA
| | | | - Zhaoming Wang
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA
| | - Umar Farooq
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA
- Department of Internal Medicine, University of Iowa, Iowa City, IA
| | - George J. Weiner
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA
- Department of Internal Medicine, University of Iowa, Iowa City, IA
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Mata-Molanes JJ, Rebollo-Liceaga J, Martínez-Navarro EM, Manzano RG, Brugarolas A, Juan M, Sureda M. Relevance of Fc Gamma Receptor Polymorphisms in Cancer Therapy With Monoclonal Antibodies. Front Oncol 2022; 12:926289. [PMID: 35814459 PMCID: PMC9263556 DOI: 10.3389/fonc.2022.926289] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 05/30/2022] [Indexed: 12/15/2022] Open
Abstract
Therapeutic monoclonal antibodies (mAbs), including immune checkpoint inhibitors (ICIs), are an important breakthrough for the treatment of cancer and have dramatically changed clinical outcomes in a wide variety of tumours. However, clinical response varies among patients receiving mAb-based treatment, so it is necessary to search for predictive biomarkers of response to identify the patients who will derive the greatest therapeutic benefit. The interaction of mAbs with Fc gamma receptors (FcγR) expressed by innate immune cells is essential for antibody-dependent cellular cytotoxicity (ADCC) and this binding is often critical for their in vivo efficacy. FcγRIIa (H131R) and FcγRIIIa (V158F) polymorphisms have been reported to correlate with response to therapeutic mAbs. These polymorphisms play a major role in the affinity of mAb receptors and, therefore, can exert a profound impact on antitumor response in these therapies. Furthermore, recent reports have revealed potential mechanisms of ICIs to modulate myeloid subset composition within the tumour microenvironment through FcγR-binding, optimizing their anti-tumour activity. The purpose of this review is to highlight the clinical contribution of FcγR polymorphisms to predict response to mAbs in cancer patients.
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Affiliation(s)
- Juan J. Mata-Molanes
- Oncology Platform, Hospital Quirónsalud Torrevieja, Alicante, Spain
- *Correspondence: Juan J. Mata-Molanes,
| | | | | | | | | | - Manel Juan
- Department of Immunology, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Manuel Sureda
- Oncology Platform, Hospital Quirónsalud Torrevieja, Alicante, Spain
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4
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Kaddu-Mulindwa D, Altmann B, Robrecht S, Ziepert M, Regitz E, Tausch E, Held G, Poeschel V, Lesan V, Bittenbring JT, Thurner L, Pfreundschuh M, Christofyllakis K, Truemper L, Loeffler M, Schmitz N, Hoth M, Hallek M, Fischer K, Stilgenbauer S, Bewarder M, Rixecker TM. KIR2DS1–HLA-C status as a predictive marker for benefit from rituximab: a post-hoc analysis of the RICOVER-60 and CLL8 trials. Lancet Haematol 2022; 9:e133-e142. [DOI: 10.1016/s2352-3026(21)00369-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/19/2021] [Accepted: 11/23/2021] [Indexed: 02/06/2023]
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5
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Musolino A, Gradishar WJ, Rugo HS, Nordstrom JL, Rock EP, Arnaldez F, Pegram MD. Role of Fcγ receptors in HER2-targeted breast cancer therapy. J Immunother Cancer 2022; 10:jitc-2021-003171. [PMID: 34992090 PMCID: PMC8739678 DOI: 10.1136/jitc-2021-003171] [Citation(s) in RCA: 55] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/25/2021] [Indexed: 01/03/2023] Open
Abstract
Several therapeutic monoclonal antibodies (mAbs), including those targeting epidermal growth factor receptor, human epidermal growth factor receptor 2 (HER2), and CD20, mediate fragment crystallizable gamma receptor (FcγR)–dependent activities as part of their mechanism of action. These activities include induction of antibody-dependent cellular cytotoxicity (ADCC) and antibody-dependent cellular phagocytosis (ADCP), which are innate immune mechanisms of cancer cell elimination. FcγRs are distinguished by their affinity for the Fc fragment, cell distribution, and type of immune response they induce. Activating FcγRIIIa (CD16A) on natural killer cells plays a crucial role in mediating ADCC, and activating FcγRIIa (CD32A) and FcγRIIIa on macrophages are important for mediating ADCP. Polymorphisms in FcγRIIIa and FcγRIIa generate variants that bind to the Fc portion of antibodies with different affinities. This results in differential FcγR-mediated activities associated with differential therapeutic outcomes across multiple clinical settings, from early stage to metastatic disease, in patients with HER2+ breast cancer treated with the anti-HER2 mAb trastuzumab. Trastuzumab has, nonetheless, revolutionized HER2+ breast cancer treatment, and several HER2-directed mAbs have been developed using Fc glyco-engineering or Fc protein-engineering to enhance FcγR-mediated functions. An example of an approved anti-HER2 Fc-engineered chimeric mAb is margetuximab, which targets the same epitope as trastuzumab, but features five amino acid substitutions in the IgG 1 Fc domain that were deliberately introduced to increase binding to activating FcγRIIIa and decrease binding to inhibitory FcγRIIb (CD32B). Margetuximab enhances Fc-dependent ADCC in vitro more potently than the combination of pertuzumab (another approved mAb directed against an alternate HER2 epitope) and trastuzumab. Margetuximab administration also enhances HER2-specific B cell and T cell–mediated responses ex vivo in samples from patients treated with prior lines of HER2 antibody-based therapies. Stemming from these observations, a worthwhile future goal in the treatment of HER2+ breast cancer is to promote combinatorial approaches that better eradicate HER2+ cancer cells via enhanced immunological mechanisms.
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Affiliation(s)
- Antonino Musolino
- Department of Medicine and Surgery, University Hospital of Parma, Medical Oncology and Breast Unit, Parma, Italy
| | - William J Gradishar
- Division of Hematology/Oncology, Northwestern University, Chicago, Illinois, USA
| | - Hope S Rugo
- Helen Diller Family Comprehensive Cancer Center, Breast Oncology and Clinical Trials Education, University of California San Francisco, San Francisco, California, USA
| | | | | | | | - Mark D Pegram
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California, USA
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6
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Strefford JC, Nowicka M, Hargreaves CE, Burton C, Davies A, Ganderton R, Hiddemann W, Iriyama C, Klapper W, Latham KV, Martelli M, Mir F, Parker H, Potter KN, Rose-Zerilli MJJ, Sehn LH, Trněný M, Vitolo U, Bolen CR, Klein C, Knapp A, Oestergaard MZ, Cragg MS. Single-nucleotide Fcγ receptor polymorphisms do not impact obinutuzumab/rituximab outcome in patients with lymphoma. Blood Adv 2021; 5:2935-2944. [PMID: 34323957 PMCID: PMC8361457 DOI: 10.1182/bloodadvances.2020003985] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 04/03/2021] [Indexed: 01/16/2023] Open
Abstract
Single-nucleotide polymorphisms (SNPs) have been shown to influence Fcγ receptor (FcγR) affinity and activity, but their effect on treatment response is unclear. We assessed their importance in the efficacy of obinutuzumab or rituximab combined with chemotherapy in untreated advanced follicular lymphoma (FL) and diffuse large B-cell lymphoma (DLBCL) in the GALLIUM (www.clinicaltrials.gov #NCT01332968) and GOYA (#NCT01287741) trials, respectively. Genomic DNA was extracted from patients enrolled in GALLIUM (n = 1202) and GOYA (n = 1418). Key germline SNPs, FCGR2A R131H (rs1801274), FCGR3A F158V (rs396991), and FCGR2B I232T (rs1050501), were genotyped and assessed for their impact on investigator-assessed progression-free survival (PFS). In both cohorts there was no prognostic effect of FCGR2A or FCGR3A. In FL, FCGR2B was associated with favorable PFS in univariate and multivariate analyses comparing I232T with I232I, with a more modest association for rituximab-treated (univariate: hazard ratio [HR], 0.78; 95% confidence interval [CI], 0.54-1.14; P = .21) vs obinutuzumab-treated patients (HR, 0.56; 95% CI, 0.34-0.91; P = .02). Comparing T232T with I232I, an association was found for obinutuzumab (univariate: HR, 2.76; 95% CI, 1.02-7.5; P = .0459). Neither observation retained significance after multiple-test adjustment. FCGR2B was associated with poorer PFS in multivariate analyses comparing T232T with I232I in rituximab- but not obinutuzumab-treated patients with DLBCL (HR, 4.40; 95% CI, 1.71-11.32; P = .002; multiple-test-adjusted P = .03); however, this genotype was rare (n = 13). This study shows that FcγR genotype is not associated with response to rituximab/obinutuzumab plus chemotherapy in treatment-naive patients with advanced FL or DLBCL.
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Affiliation(s)
- Jonathan C Strefford
- School of Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | | | - Chantal E Hargreaves
- School of Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
- Nuffield Department of Medicine, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom
| | - Cathy Burton
- Haematological Malignancy Diagnostic Service, Leeds Cancer Centre, Leeds, United Kingdom
| | - Andrew Davies
- Southampton Cancer Research United Kingdom (CRUK)/National Institute of Health Research (NIHR) Experimental Cancer Medicines Centre, University of Southampton, Southampton, United Kingdom
| | - Rosalind Ganderton
- Southampton University Hospitals National Health Service (NHS) Foundation Trust, Southampton, United Kingdom
| | - Wolfgang Hiddemann
- Department of Medicine III, Ludwig-Maximilians University Hospital Munich, Munich, Germany
| | - Chisako Iriyama
- Department of Pathology and Tumor Biology, Nagoya Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Wolfram Klapper
- Department of Hematopathology, University of Kiel, Kiel, Germany
| | - Kate V Latham
- School of Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Maurizio Martelli
- Department of Translational and Precision Medicine, Section of Hematology, Sapienza University, Rome, Italy
| | - Farheen Mir
- Royal Marsden Hospital, London, United Kingdom
| | - Helen Parker
- School of Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Kathleen N Potter
- School of Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Matthew J J Rose-Zerilli
- School of Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Laurie H Sehn
- BC Cancer Centre for Lymphoid Cancer
- Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Marek Trněný
- 1st Department of Medicine, 1st Faculty of Medicine, Charles University General Hospital, Prague, Czech Republic
| | - Umberto Vitolo
- Multidisciplinary Oncology Outpatient Clinic, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy
| | | | - Christian Klein
- Roche Innovation Center Zurich, Roche Glycart AG, Schlieren, Switzerland; and
| | | | | | - Mark S Cragg
- School of Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, University of Southampton Faculty of Medicine, University of Southampton, Southampton, United Kingdom
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7
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Lavacchi D, Landini I, Perrone G, Roviello G, Mini E, Nobili S. Pharmacogenetics in diffuse large B-cell lymphoma treated with R-CHOP: Still an unmet challenge. Pharmacol Ther 2021; 229:107924. [PMID: 34175369 DOI: 10.1016/j.pharmthera.2021.107924] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 05/19/2021] [Accepted: 05/24/2021] [Indexed: 02/07/2023]
Abstract
DLBCL is the most common lymphoma representing approximately one third of all non-Hodgkin lymphomas and about 40% of patients do not benefit of the standard first-line immune-chemotherapeutic treatment (i.e., R-CHOP - rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone) that is administered as upfront therapy to substantially all patients independently from the stage of disease and other prognostic parameters. The administration of other pharmacological treatments is in fact limited to selected patients, unfitting for R-CHOP. Although clinical prognostic scores, i.e. International Prognostic Index (IPI), and molecular classifiers based on the cell of origin are available, at present no biomarkers predictive of R-CHOP response has been identified and validated. Constitutional polymorphisms of genes involved in the mechanism of action of drugs included in R-CHOP have been suggested by many authors to play a role in the efficacy and in some case in the toxicity of this treatment. Thus, it is conceivable that in the future, after proper validation, some polymorphisms can be used as pharmacogenetic biomarkers of therapeutic outcome in this disease setting. This review discusses the status of the art on molecular biomarkers predictive of DLBCL prognosis and deals with the relevant issue of the variability in response to DLBCL drug treatment. Overall, this review focuses on single nucleotide polymorphisms (SNPs) that, based on a candidate gene approach or on a GWAS analysis, have been suggested to play a role in response to R-CHOP. In particular, SNPs discovered by a candidate gene approach are related to gene involved in drug transport (i.e. ATP-binding cassette transporters), drug metabolism, drug detoxification enzymes, oxidative stress, apoptosis, DNA repair, immunity and angiogenesis. Data from a GWAS analysis performed in DLBCL patients treated with R-CHOP, identified two SNPs associated with clinical outcomes related to genes involved in pivotal cellular processes and in transcriptional regulation and cell cycle progression, respectively. Ongoing prospective pharmacogenetic clinical trials, including a GWAS study we performed, have also been discussed.
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Affiliation(s)
- Daniele Lavacchi
- Clinical Oncology Unit, Careggi University Hospital, Florence, Italy
| | - Ida Landini
- Department of Health Sciences, University of Florence, Florence, Italy; DENOTHE Excellence Center, University of Florence, Florence, Italy
| | - Gabriele Perrone
- Department of Health Sciences, University of Florence, Florence, Italy; DENOTHE Excellence Center, University of Florence, Florence, Italy
| | - Giandomenico Roviello
- Department of Health Sciences, University of Florence, Florence, Italy; DENOTHE Excellence Center, University of Florence, Florence, Italy
| | - Enrico Mini
- Department of Health Sciences, University of Florence, Florence, Italy; DENOTHE Excellence Center, University of Florence, Florence, Italy; Cancer Pharmacology Working Group of the Italian Society of Pharmacology, Milan, Italy.
| | - Stefania Nobili
- Cancer Pharmacology Working Group of the Italian Society of Pharmacology, Milan, Italy; Department of Neurosciences, Imaging and Clinical Sciences, "G. D'Annunzio" University of Chieti-Pescara, Chieti, Italy.
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8
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Impact of Rituximab and Host/Donor Fc Receptor Polymorphisms after Allogeneic Hematopoietic Cell Transplantation for CD20 + B Cell Malignancies. Biol Blood Marrow Transplant 2020; 26:1811-1818. [PMID: 32693210 DOI: 10.1016/j.bbmt.2020.07.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/11/2020] [Accepted: 07/13/2020] [Indexed: 11/22/2022]
Abstract
We previously reported a 24% 1-year relapse rate in 93 older or medically unfit patients with CD20+ B cell malignancies after allogeneic hematopoietic cell transplantation (HCT) with low-intensity conditioning. The current prospective study tested the hypothesis that disease relapse could be reduced and overall survival (OS) improved by peritransplantation administration of rituximab (RTX). Sixty-three patients received RTX (375 mg/m2/day) on days -3, +10, +24, and +38 along with 2 to 3 Gy total body irradiation with or without fludarabine (30 mg/m2 for 3 days). Median RTX levels of >25 μg/mL were achieved through day +84 after transplantation, but RTX level was not correlated with relapse or graft-versus-host disease (GVHD). HCT recipients with F/F and V/F FCγRIIIa polymorphisms showed a trend toward a higher relapse rate compared with those with V/V polymorphism (P= .15). No difference in outcome was found based on V/V donor pairing. Five-year relapse rates were similar between RTX-treated patients and historical controls (32% versus 28%; P = .94). RTX-treated patients had greater 5-year OS (47% versus 38%; P = .13) and progression-free survival (41% versus 32%; P = .12) compared with historical controls who underwent HCT without RTX, although the difference was not statistically significant. The incidence of acute GVHD was similar in the 2 groups (grade II-IV, 57% versus 56%; grade III-IV, 13% versus 17%), but the 5-year incidence of chronic GVHD was higher among RTX-treated patients (62% versus 47%). In patients with relapsed or refractory non-Hodgkin lymphoma, peritransplantation RTX neither reduced relapse nor improved GVHD. The role of donor-recipient pairing by FCγRIIIa polymorphisms in outcomes remains to be determined.
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Rossi GM, Bonatti F, Adorni A, Alberici F, Bodria M, Bonanni A, Ghiggeri GM, Martorana D, Vaglio A. FCGR2A single nucleotide polymorphism confers susceptibility to childhood-onset idiopathic nephrotic syndrome. Immunol Lett 2017; 193:11-13. [PMID: 29155175 DOI: 10.1016/j.imlet.2017.11.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 10/11/2017] [Indexed: 02/07/2023]
Abstract
Childhood-onset idiopathic nephrotic syndrome affects 1.15-3.4 children/100,000 children/year in Western Countries. Immune-mediated mechanisms, particularly T cell-mediated, are thought to play a key pathogenic role. The genetic basis of the disease is still poorly understood. We tested the association between single nucleotide polymorphisms (SNPs) of four genes encoding Fc gamma receptors (FCGR2A, FCGR2B, FCGR3A, FCGR3B) and idiopathic nephrotic syndrome in a case-control study of paediatric patients. Children with idiopathic nephrotic syndrome (aged 1-16 years) were included. FCGR2A rs1801274 and FCGR3A rs396991 SNPs were genotyped using real-time PCR with the TaqMan method, while FCGR2B rs1050501 and FCGR3B NA1/NA2 were genotyped using Sanger sequencing. Fisher's exact test was used to explore genetic association. We enrolled 103 idiopathic nephrotic syndrome patients and 181 healthy controls. A significant association was found between idiopathic nephrotic syndrome and FCGR2A rs1801274 SNP (both with the T allele and the TT genotype, p value=0.0009, OR 1.81, 95% CI 1.27-2.59 and p value=0.0007, OR 2.39, 95% CI 1.44-3.99, respectively). No associations were found for the remaining SNPs. Fc gamma receptors might modulate response to rituximab; since 60 of the enrolled patients were treated with rituximab, we also tested the association between the studied SNPs and rituximab efficacy in this patient subgroup, but found only a weak association with FCGR2A CC genotype (p value=0.03). The FCGR2A rs1801274 SNP in the gene encoding the activating receptor CD32A confers susceptibility to idiopathic nephrotic syndrome.
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Affiliation(s)
| | - Francesco Bonatti
- Unit of Medical Genetics, University Hospital of Parma, Parma, Italy
| | - Alessia Adorni
- Unit of Medical Genetics, University Hospital of Parma, Parma, Italy
| | - Federico Alberici
- Nephrology and Immunology Unit, ASST Santi Paolo e Carlo, San Carlo Borromeo Hospital, Milano, Italy
| | - Monica Bodria
- Division of Nephrology, Dialysis, Transplantation, Giannina Gaslini Children's Hospital, Genova, Italy
| | - Alice Bonanni
- Division of Nephrology, Dialysis, Transplantation, Giannina Gaslini Children's Hospital, Genova, Italy
| | - Gian M Ghiggeri
- Division of Nephrology, Dialysis, Transplantation, Giannina Gaslini Children's Hospital, Genova, Italy
| | - Davide Martorana
- Unit of Medical Genetics, University Hospital of Parma, Parma, Italy
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10
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Moreno Torres I, García-Merino A. Anti-CD20 monoclonal antibodies in multiple sclerosis. Expert Rev Neurother 2016; 17:359-371. [DOI: 10.1080/14737175.2017.1245616] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Irene Moreno Torres
- Neuroimmunology unit, Neurology department, Puerta de Hierro-Majadahonda University Hospital, Madrid, Spain
| | - Antonio García-Merino
- Neuroimmunology unit, Neurology department, Puerta de Hierro-Majadahonda University Hospital, Madrid, Spain
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