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Papa R, Caorsi R, Volpi S, Gattorno M. Expert Perspective: Diagnostic Approach to the Autoinflammatory Diseases. Arthritis Rheumatol 2024; 76:166-177. [PMID: 37661352 DOI: 10.1002/art.42690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 08/16/2023] [Accepted: 08/30/2023] [Indexed: 09/05/2023]
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Dzhus M, Ehlers L, Wouters M, Jansen K, Schrijvers R, De Somer L, Vanderschueren S, Baggio M, Moens L, Verhaaren B, Lories R, Bucciol G, Meyts I. A Narrative Review of the Neurological Manifestations of Human Adenosine Deaminase 2 Deficiency. J Clin Immunol 2023; 43:1916-1926. [PMID: 37548813 PMCID: PMC10661818 DOI: 10.1007/s10875-023-01555-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 07/14/2023] [Indexed: 08/08/2023]
Abstract
Deficiency of human adenosine deaminase type 2 (DADA2) is a complex systemic autoinflammatory disorder characterized by vasculopathy, immune dysregulation, and hematologic abnormalities. The most notable neurological manifestations of DADA2 are strokes that can manifest with various neurological symptoms and are potentially fatal. However, neurological presentations can be diverse. We here present a review of the neurological manifestations of DADA2 to increase clinical awareness of DADA2 as the underlying diagnosis. We reviewed all published cases of DADA2 from 1 January 2014 until 19 July 2022 found via PubMed. A total of 129 articles describing the clinical features of DADA2 were included in the analysis. Six hundred twenty-eight patients diagnosed with DADA2 were included in the review. 50.3% of patients had at least signs of one reported neurological event, which was the initial or sole manifestation in 5.7% and 0.6%, respectively. 77.5% of patients with neurological manifestations had at least signs of one cerebrovascular accident, with lacunar strokes being the most common and 35.9% of them having multiple stroke episodes. There is a remarkable predilection for the brain stem and deep gray matter, with 37.3% and 41.6% of ischemic strokes, respectively. Other neurological involvement included neuropathies, focal neurological deficits, ophthalmological findings, convulsions, and headaches. In summary, neurological manifestations affect a significant proportion of patients with DADA2, and the phenotype is broad. Neurological manifestations can be the first and single manifestation of DADA2. Therefore, stroke, encephalitis, posterior reversible encephalopathy syndrome, mononeuropathy and polyneuropathy, and Behçet's disease-like presentations should prompt the neurologist to exclude DADA2, especially but not only in childhood.
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Affiliation(s)
- Mariia Dzhus
- Department of Microbiology, Immunology and Transplantation, Inborn Errors of Immunity, KU Leuven, Leuven, Belgium
| | - Lisa Ehlers
- Department of Microbiology, Immunology and Transplantation, Inborn Errors of Immunity, KU Leuven, Leuven, Belgium
| | - Marjon Wouters
- Department of Microbiology, Immunology and Transplantation, Inborn Errors of Immunity, KU Leuven, Leuven, Belgium
| | - Katrien Jansen
- Department of Development and Regeneration, Department of Pediatrics, University Hospitals Leuven and KU Leuven, Leuven, Belgium
| | - Rik Schrijvers
- Department of General Internal Medicine-Allergy and Clinical Immunology, Allergy and Clinical Immunology Research Group, Department of Microbiology, Immunology and Transplantation, University Hospitals Leuven and KU Leuven, Leuven, Belgium
| | - Lien De Somer
- Department of Pediatric Rheumatology, Laboratory of Immunobiology, Rega Institute, European Reference Network for Rare Immunodeficiency, Autoinflammatory and Autoimmune Diseases, University Hospital Leuven and KU Leuven, Leuven, Belgium
| | - Steven Vanderschueren
- Department of General Internal Medicine, European Reference Network for Rare Immunodeficiency, Autoinflammatory and Autoimmune Diseases, Department of Microbiology, Immunology and Transplantation, University Hospitals Leuven and KU Leuven, Leuven, Belgium
| | - Marco Baggio
- Department of Microbiology, Immunology and Transplantation, Inborn Errors of Immunity, KU Leuven, Leuven, Belgium
| | - Leen Moens
- Department of Microbiology, Immunology and Transplantation, Inborn Errors of Immunity, KU Leuven, Leuven, Belgium
| | | | - Rik Lories
- Department of Development and Regeneration, Skeletal Biology and Engineering Research Centre, Division of Rheumatology, University Hospitals Leuven and KU Leuven, Leuven, Belgium
| | - Giorgia Bucciol
- Department of Microbiology, Immunology and Transplantation, Inborn Errors of Immunity, Department of Pediatrics, University Hospitals Leuven and KU Leuven, Leuven, Belgium
| | - Isabelle Meyts
- Department of Microbiology, Immunology and Transplantation, Inborn Errors of Immunity, Department of Pediatrics, European Reference Network for Rare Immunodeficiency, Autoinflammatory and Autoimmune Diseases, University Hospitals Leuven and KU Leuven, Leuven, Belgium.
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Cafaro A, Conti M, Pigliasco F, Barco S, Bandettini R, Cangemi G. Biological Fluid Microsampling for Therapeutic Drug Monitoring: A Narrative Review. Biomedicines 2023; 11:1962. [PMID: 37509602 PMCID: PMC10377272 DOI: 10.3390/biomedicines11071962] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/04/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
Therapeutic drug monitoring (TDM) is a specialized area of laboratory medicine which involves the measurement of drug concentrations in biological fluids with the aim of optimizing efficacy and reducing side effects, possibly modifying the drug dose to keep the plasma concentration within the therapeutic range. Plasma and/or whole blood, usually obtained by venipuncture, are the "gold standard" matrices for TDM. Microsampling, commonly used for newborn screening, could also be a convenient alternative to traditional sampling techniques for pharmacokinetics (PK) studies and TDM, helping to overcome practical problems and offering less invasive options to patients. Although technical limitations have hampered the use of microsampling in these fields, innovative techniques such as 3-D dried blood spheroids, volumetric absorptive microsampling (VAMS), dried plasma spots (DPS), and various microfluidic devices (MDS) can now offer reliable alternatives to traditional samples. The application of microsampling in routine clinical pharmacology is also hampered by the need for instrumentation capable of quantifying analytes in small volumes with sufficient sensitivity. The combination of microsampling with high-sensitivity analytical techniques, such as liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS), is particularly effective in ensuring high accuracy and sensitivity from very small sample volumes. This manuscript provides a critical review of the currently available microsampling devices for both whole blood and other biological fluids, such as plasma, urine, breast milk, and saliva. The purpose is to provide useful information in the scientific community to laboratory personnel, clinicians, and researchers interested in implementing the use of microsampling in their routine clinical practice.
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Affiliation(s)
- Alessia Cafaro
- Chromatography and Mass Spectrometry Section, Central Laboratory of Analysis, IRCCS Istituto Giannina Gaslini, 16147 Genoa, Italy
| | - Matteo Conti
- Public Health Department, Imola Local Unit, Regione Emilia-Romagna Healthcare Service, 40026 Imola, Italy
| | - Federica Pigliasco
- Chromatography and Mass Spectrometry Section, Central Laboratory of Analysis, IRCCS Istituto Giannina Gaslini, 16147 Genoa, Italy
| | - Sebastiano Barco
- Chromatography and Mass Spectrometry Section, Central Laboratory of Analysis, IRCCS Istituto Giannina Gaslini, 16147 Genoa, Italy
| | - Roberto Bandettini
- Chromatography and Mass Spectrometry Section, Central Laboratory of Analysis, IRCCS Istituto Giannina Gaslini, 16147 Genoa, Italy
| | - Giuliana Cangemi
- Chromatography and Mass Spectrometry Section, Central Laboratory of Analysis, IRCCS Istituto Giannina Gaslini, 16147 Genoa, Italy
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Drago E, Garbarino F, Signa S, Grossi A, Schena F, Penco F, Santori E, Candotti F, Boztug K, Volpi S, Gattorno M, Caorsi R. Case Report: Susceptibility to viral infections and secondary hemophagocytic lymphohistiocytosis responsive to intravenous immunoglobulin as primary manifestations of adenosine deaminase 2 deficiency. Front Immunol 2022; 13:937108. [PMID: 36159847 PMCID: PMC9503826 DOI: 10.3389/fimmu.2022.937108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 08/15/2022] [Indexed: 12/03/2022] Open
Abstract
Deficiency of adenosine deaminase 2 (DADA2) is an autosomal recessive disease associated with a highly variable clinical presentation, including systemic vasculitis, immunodeficiency, and cytopenia. We report a case of a 16-year-old girl affected by recurrent viral infections [including cytomegalovirus (CMV)-related hepatitis and measles vaccine virus-associated manifestations] and persistent inflammation, which occurred after Parvovirus infection and complicated by secondary hemophagocytic lymphohistiocytosis (HLH). HLH’s first episode presented at 6 years of age and was preceded by persistent fever and arthralgia with evidence of Parvovirus B19 infection. The episode responded to intravenous steroids but relapsed during steroids tapering. High-dose intravenous immunoglobulin (IVIG) helped manage her clinical symptoms and systemic inflammation. The frequency of IVIG administration and the dosage were progressively reduced. At the age of 9, she experienced varicella zoster virus (VZV) reactivation followed by the recurrence of the inflammatory phenotype complicated by HLH with neurological involvement. Again, high-dose steroids and monthly IVIG resulted in a quick response. Targeted next-generation sequencing (NGS) for autoinflammatory diseases and immunodeficiencies revealed the homozygous Leu183Pro ADA2 mutation, which was confirmed by Sanger analysis. ADA2 enzymatic test showed a complete loss of ADA2 activity. For about 3 years, IVIG alone was completely effective in preventing flares of inflammation and neurological manifestations. Anti-TNF treatment was started at the age of 13 for the appearance of recurrent genital ulcers, with a complete response. This case further expands the clinical spectrum of DADA2 and emphasizes the importance of extensive genetic testing in clinical phenotypes characterized by persistent unspecific inflammatory syndromes. The use of high doses of IVIG might represent a possible effective immune modulator, especially in combination with anti-TNF treatment.
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Affiliation(s)
- Enrico Drago
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genova, Italy
| | - Francesca Garbarino
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genova, Italy
| | - Sara Signa
- Center for Autoinflammatory Diseases and Immunodeficiencies, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Giannina Gaslini, Genova, Italy
| | - Alice Grossi
- Unità Operativa Semplice Dipartimentale (UOSD) Laboratory of Genetics and Genomics of Rare Diseases, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Giannina Gaslini, Genova, Italy
| | - Francesca Schena
- Center for Autoinflammatory Diseases and Immunodeficiencies, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Giannina Gaslini, Genova, Italy
| | - Federica Penco
- Center for Autoinflammatory Diseases and Immunodeficiencies, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Giannina Gaslini, Genova, Italy
| | - Elettra Santori
- Division of Immunology and Allergy, Centre Hospitalier Universitaire Vaudois CHUV, Lausanne, Switzerland
| | - Fabio Candotti
- Division of Immunology and Allergy, Centre Hospitalier Universitaire Vaudois CHUV, Lausanne, Switzerland
| | - Kaan Boztug
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
- St. Anna Children’s Cancer Research Institute, Vienna, Austria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
- Medical University of Vienna, Department of Pediatrics and Adolescent Medicine, Vienna, Austria
- St. Anna Children’s Hospital, Vienna, Austria
| | - Stefano Volpi
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genova, Italy
- Center for Autoinflammatory Diseases and Immunodeficiencies, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Giannina Gaslini, Genova, Italy
| | - Marco Gattorno
- Center for Autoinflammatory Diseases and Immunodeficiencies, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Giannina Gaslini, Genova, Italy
| | - Roberta Caorsi
- Center for Autoinflammatory Diseases and Immunodeficiencies, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Giannina Gaslini, Genova, Italy
- *Correspondence: Roberta Caorsi,
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Signa S, Bertoni A, Penco F, Caorsi R, Cafaro A, Cangemi G, Volpi S, Gattorno M, Schena F. Adenosine Deaminase 2 Deficiency (DADA2): A Crosstalk Between Innate and Adaptive Immunity. Front Immunol 2022; 13:935957. [PMID: 35898506 PMCID: PMC9309328 DOI: 10.3389/fimmu.2022.935957] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 06/10/2022] [Indexed: 11/30/2022] Open
Abstract
Deficiency of Adenosine deaminase 2 (DADA2) is a monogenic autoinflammatory disorder presenting with a broad spectrum of clinical manifestations, including immunodeficiency, vasculopathy and hematologic disease. Biallelic mutations in ADA2 gene have been associated with a decreased ADA2 activity, leading to reduction in deamination of adenosine and deoxyadenosine into inosine and deoxyinosine and subsequent accumulation of extracellular adenosine. In the early reports, the pivotal role of innate immunity in DADA2 pathogenic mechanism has been underlined, showing a skewed polarization from the M2 macrophage subtype to the proinflammatory M1 subtype, with an increased production of inflammatory cytokines such as TNF-α. Subsequently, a dysregulation of NETosis, triggered by the excess of extracellular Adenosine, has been implicated in the pathogenesis of DADA2. In the last few years, evidence is piling up that adaptive immunity is profoundly altered in DADA2 patients, encompassing both T and B branches, with a disrupted homeostasis in T-cell subsets and a B-cell skewing defect. Type I/type II IFN pathway upregulation has been proposed as a possible core signature in DADA2 T cells and monocytes but also an increased IFN-β secretion directly from endothelial cells has been described. So far, a unifying clear pathophysiological explanation for the coexistence of systemic inflammation, immunedysregulation and hematological defects is lacking. In this review, we will explore thoroughly the latest understanding regarding DADA2 pathophysiological process, with a particular focus on dysregulation of both innate and adaptive immunity and their interacting role in the development of the disease.
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Affiliation(s)
- Sara Signa
- Center for Autoinflammatory Diseases and Immunodeficiencies, Istituto di Ricovero e cura a carattere scientifico (IRCCS) Istituto Giannina Gaslini, Genoa, Italy
| | - Arinna Bertoni
- Center for Autoinflammatory Diseases and Immunodeficiencies, Istituto di Ricovero e cura a carattere scientifico (IRCCS) Istituto Giannina Gaslini, Genoa, Italy
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal-Child Sciences (DINOGMI), University of Genoa, Genoa, Italy
| | - Federica Penco
- Center for Autoinflammatory Diseases and Immunodeficiencies, Istituto di Ricovero e cura a carattere scientifico (IRCCS) Istituto Giannina Gaslini, Genoa, Italy
| | - Roberta Caorsi
- Center for Autoinflammatory Diseases and Immunodeficiencies, Istituto di Ricovero e cura a carattere scientifico (IRCCS) Istituto Giannina Gaslini, Genoa, Italy
| | - Alessia Cafaro
- Chromatography and Mass Spectrometry Section, Central Laboratory of Analysis, Istituto di Ricovero e cura a carattere scientifico (IRCCS) Istituto Giannina Gaslini, Genoa, Italy
| | - Giuliana Cangemi
- Chromatography and Mass Spectrometry Section, Central Laboratory of Analysis, Istituto di Ricovero e cura a carattere scientifico (IRCCS) Istituto Giannina Gaslini, Genoa, Italy
| | - Stefano Volpi
- Center for Autoinflammatory Diseases and Immunodeficiencies, Istituto di Ricovero e cura a carattere scientifico (IRCCS) Istituto Giannina Gaslini, Genoa, Italy
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal-Child Sciences (DINOGMI), University of Genoa, Genoa, Italy
| | - Marco Gattorno
- Center for Autoinflammatory Diseases and Immunodeficiencies, Istituto di Ricovero e cura a carattere scientifico (IRCCS) Istituto Giannina Gaslini, Genoa, Italy
- *Correspondence: Marco Gattorno,
| | - Francesca Schena
- Center for Autoinflammatory Diseases and Immunodeficiencies, Istituto di Ricovero e cura a carattere scientifico (IRCCS) Istituto Giannina Gaslini, Genoa, Italy
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Yilmaz M, Potts DE, Geier C, Walter JE. Can we identify WHIM in infancy? Opportunities with the public newborn screening process. AMERICAN JOURNAL OF MEDICAL GENETICS. PART C, SEMINARS IN MEDICAL GENETICS 2022; 190:215-221. [PMID: 36210583 DOI: 10.1002/ajmg.c.32002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/30/2022] [Accepted: 08/31/2022] [Indexed: 06/16/2023]
Abstract
Newborn screening (NBS) for severe combined immunodeficiency (SCID) utilizing T-cell receptor excision circles (TRECs) has been implemented in all 50 states as of December 2018 and has been transformative for the clinical care of SCID patients. Though having high sensitivity for SCID, NBS-SCID has low specificity, therefore is able to detect other causes of lymphopenia in newborns including many inborn errors of immunity (IEIs). In a recent study, three of six newborns later diagnosed with Warts, Hypogammaglobulinemia, Infections, and Myelokathexis (WHIM) syndrome were found to have a low TRECs and lymphopenia at birth. This presents an opportunity to increase the detection and diagnosis of WHIM syndrome by NBS-SCID with immunological follow-up along with a combination of flow cytometry for immune cell subsets, absolute neutrophil count, and genetic testing, extending beyond the conventional bone marrow studies. Coupled with emerging technologies such as next-generation sequencing, transcriptomics and proteomics, dried blood spots used in NBS-SCID will promote earlier detection, diagnosis, and therefore treatment of IEIs such as WHIM syndrome.
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Affiliation(s)
- Melis Yilmaz
- Division of Allergy and Immunology, Department of Pediatrics and Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
- Division of Allergy and Immunology, Department of Pediatrics, Johns Hopkins All Children's Hospital, St Petersburg, Florida, USA
| | - David Evan Potts
- Division of Allergy and Immunology, Department of Pediatrics and Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
- Division of Allergy and Immunology, Department of Pediatrics, Johns Hopkins All Children's Hospital, St Petersburg, Florida, USA
| | - Christoph Geier
- Department of Rheumatology and Clinical Immunology, University Medical Center Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency (CCI), University Medical Center Freiburg, Freiburg, Germany
| | - Jolan E Walter
- Division of Allergy and Immunology, Department of Pediatrics and Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
- Division of Allergy and Immunology, Department of Pediatrics, Johns Hopkins All Children's Hospital, St Petersburg, Florida, USA
- Division of Allergy and Immunology, Massachusetts General Hospital for Children, Boston, Massachusetts, USA
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Pilania RK, Banday AZ, Sharma S, Kumrah R, Joshi V, Loganathan S, Dhaliwal M, Jindal AK, Vignesh P, Suri D, Rawat A, Singh S. Deficiency of Human Adenosine Deaminase Type 2 - A Diagnostic Conundrum for the Hematologist. Front Immunol 2022; 13:869570. [PMID: 35592317 PMCID: PMC9110783 DOI: 10.3389/fimmu.2022.869570] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 03/28/2022] [Indexed: 02/06/2023] Open
Abstract
Deficiency of adenosine deaminase type 2 (DADA2) was first described in 2014 as a monogenic cause of polyartertitis nodosa (PAN), early onset lacunar stroke and livedo reticularis. The clinical phenotype of DADA2 is, however, very broad and may involve several organ systems. Apart from vasculitis, children may present with i) Hematological manifestations (ii) Lymphoproliferation and iii) Immunodeficiencies. Patients with DADA2 can have variable patterns of cytopenias and bone marrow failure syndromes. Patients with DADA2 who have predominant haematological manifestations are associated with ADA2 gene variants that result in minimal or no residual ADA2 activity. Lymphoproliferation in patients with DADA2 may range from benign lymphoid hyperplasia to lymphoreticular malignancies. Patients may present with generalized lymphadenopathy, splenomegaly, autoimmune lymphoproliferative syndrome (ALPS) like phenotype, Hodgkin lymphoma, T-cell large granular lymphocytic infiltration of bone marrow and multicentric Castleman disease. Immunodeficiencies associated with DADA are usually mild. Affected patients have variable hypogammaglobulinemia, decrease in B cells, low natural killer cells, common variable immunodeficiency and rarely T cell immunodeficiency. To conclude, DADA2 has an extremely variable phenotype and needs to be considered as a differential diagnosis in diverse clinical conditions. In this review, we describe the evolving clinical phenotypes of DADA2 with a special focus on haematological and immunological manifestations.
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Affiliation(s)
- Rakesh Kumar Pilania
- Pediatric Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Aaqib Zaffar Banday
- Pediatric Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Saniya Sharma
- Pediatric Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Rajni Kumrah
- Pediatric Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Vibhu Joshi
- Pediatric Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Sathish Loganathan
- Pediatric Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Manpreet Dhaliwal
- Pediatric Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Ankur Kumar Jindal
- Pediatric Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Pandiarajan Vignesh
- Pediatric Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Deepti Suri
- Pediatric Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Amit Rawat
- Pediatric Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Surjit Singh
- Pediatric Allergy Immunology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
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