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Óskarsdóttir S, Boot E, Crowley TB, Loo JCY, Arganbright JM, Armando M, Baylis AL, Breetvelt EJ, Castelein RM, Chadehumbe M, Cielo CM, de Reuver S, Eliez S, Fiksinski AM, Forbes BJ, Gallagher E, Hopkins SE, Jackson OA, Levitz-Katz L, Klingberg G, Lambert MP, Marino B, Mascarenhas MR, Moldenhauer J, Moss EM, Nowakowska BA, Orchanian-Cheff A, Putotto C, Repetto GM, Schindewolf E, Schneider M, Solot CB, Sullivan KE, Swillen A, Unolt M, Van Batavia JP, Vingerhoets C, Vorstman J, Bassett AS, McDonald-McGinn DM. Updated clinical practice recommendations for managing children with 22q11.2 deletion syndrome. Genet Med 2023; 25:100338. [PMID: 36729053 DOI: 10.1016/j.gim.2022.11.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 11/04/2022] [Accepted: 11/08/2022] [Indexed: 02/03/2023] Open
Abstract
This review aimed to update the clinical practice guidelines for managing children and adolescents with 22q11.2 deletion syndrome (22q11.2DS). The 22q11.2 Society, the international scientific organization studying chromosome 22q11.2 differences and related conditions, recruited expert clinicians worldwide to revise the original 2011 pediatric clinical practice guidelines in a stepwise process: (1) a systematic literature search (1992-2021), (2) study selection and data extraction by clinical experts from 9 different countries, covering 24 subspecialties, and (3) creation of a draft consensus document based on the literature and expert opinion, which was further shaped by survey results from family support organizations regarding perceived needs. Of 2441 22q11.2DS-relevant publications initially identified, 2344 received full-text reviews, including 1545 meeting criteria for potential relevance to clinical care of children and adolescents. Informed by the available literature, recommendations were formulated. Given evidence base limitations, multidisciplinary recommendations represent consensus statements of good practice for this evolving field. These recommendations provide contemporary guidance for evaluation, surveillance, and management of the many 22q11.2DS-associated physical, cognitive, behavioral, and psychiatric morbidities while addressing important genetic counseling and psychosocial issues.
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Affiliation(s)
- Sólveig Óskarsdóttir
- Department of Pediatric Rheumatology and Immunology, Queen Silvia Children's Hospital, Sahlgrenska University Hospital, Gothenburg, Sweden; Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
| | - Erik Boot
- Advisium, 's Heeren Loo Zorggroep, Amersfoort, The Netherlands; The Dalglish Family 22q Clinic, University Health Network, Toronto, Ontario, Canada; Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands.
| | - Terrence Blaine Crowley
- The 22q and You Center, Clinical Genetics Center, and Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Joanne C Y Loo
- The Dalglish Family 22q Clinic, University Health Network, Toronto, Ontario, Canada
| | - Jill M Arganbright
- Department of Otorhinolaryngology, Children's Mercy Hospital and University of Missouri Kansas City School of Medicine, Kansas City, MO
| | - Marco Armando
- Division of Child and Adolescent Psychiatry, Department of Psychiatry, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Adriane L Baylis
- Department of Plastic and Reconstructive Surgery, Nationwide Children's Hospital, The Ohio State University College of Medicine, Columbus, OH
| | - Elemi J Breetvelt
- Department of Psychiatry, Hospital for Sick Children, Toronto, Ontario, Canada; Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada; Genetics & Genome Biology Program, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada
| | - René M Castelein
- Department of Orthopedic Surgery, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Madeline Chadehumbe
- Division of Neurology, 22q and You Center, Children's Hospital of Philadelphia, Philadelphia, PA; Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | - Christopher M Cielo
- Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA; Division of Pulmonary and Sleep Medicine, 22q and You Center, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Steven de Reuver
- Department of Orthopedic Surgery, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Stephan Eliez
- Fondation Pôle Autisme, Department of Psychiatry, Geneva University School of Medecine, Geneva, Switzerland
| | - Ania M Fiksinski
- Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands; Department of Pediatric Psychology, University Medical Centre, Wilhelmina Children's Hospital, Utrecht, The Netherlands
| | - Brian J Forbes
- Division of Ophthalmology, The 22q and You Center, Children's Hospital of Philadelphia, Philadelphia, PA; Department of Surgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | - Emily Gallagher
- Division of Craniofacial Medicine, Department of Pediatrics, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, WA
| | - Sarah E Hopkins
- Division of Neurology, 22q and You Center, Children's Hospital of Philadelphia, Philadelphia, PA; Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | - Oksana A Jackson
- Department of Surgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA; Cleft Lip and Palate Program, Division of Plastic, Reconstructive and Oral Surgery, 22q and You Center, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Lorraine Levitz-Katz
- Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA; Division of Endocrinology and Diabetes, 22q and You Center, Children's Hospital of Philadelphia, Philadelphia, PA
| | | | - Michele P Lambert
- Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA; Division of Hematology, 22q and You Center, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Bruno Marino
- Pediatric Cardiology Unit, Department of Pediatrics, Obstetrics and Gynecology, "Sapienza" University of Rome, Rome, Italy
| | - Maria R Mascarenhas
- Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA; Division of Gastroenterology, Hepatology and Nutrition, 22q and You Center, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Julie Moldenhauer
- Richard D. Wood Jr. Center for Fetal Diagnosis and Treatment, 22q and You Center, The Children's Hospital of Philadelphia, Philadelphia, PA; Departments of Obstetrics and Gynecology and Surgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | | | | | - Ani Orchanian-Cheff
- Library and Information Services and The Institute of Education Research (TIER), University Health Network, Toronto, Ontario, Canada
| | - Carolina Putotto
- Pediatric Cardiology Unit, Department of Pediatrics, Obstetrics and Gynecology, "Sapienza" University of Rome, Rome, Italy
| | - Gabriela M Repetto
- Rare Diseases Program, Institute for Sciences and Innovation in Medicine, Facultad de Medicina Clinica Alemana Universidad del Desarrollo, Santiago, Chile
| | - Erica Schindewolf
- Richard D. Wood Jr. Center for Fetal Diagnosis and Treatment, 22q and You Center, The Children's Hospital of Philadelphia, Philadelphia, PA
| | - Maude Schneider
- Clinical Psychology Unit for Intellectual and Developmental Disabilities, Faculty of Psychology and Educational Sciences, University of Geneva, Geneva, Switzerland
| | - Cynthia B Solot
- Department of Speech-Language Pathology and Center for Childhood Communication, 22q and You Center, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Kathleen E Sullivan
- Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA; Division of Allergy and Immunology, 22q and You Center, The Children's Hospital of Philadelphia, Philadelphia, PA
| | - Ann Swillen
- Center for Human Genetics, University Hospital UZ Leuven, and Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Marta Unolt
- Pediatric Cardiology Unit, Department of Pediatrics, Obstetrics and Gynecology, "Sapienza" University of Rome, Rome, Italy; Department of Pediatric Cardiology and Cardiac Surgery, Ospedale Pediatrico Bambino Gesù, IRCCS, Rome, Italy
| | - Jason P Van Batavia
- Department of Surgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA; Division of Urology, 22q and You Center, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Claudia Vingerhoets
- Advisium, 's Heeren Loo Zorggroep, Amersfoort, The Netherlands; Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands
| | - Jacob Vorstman
- Department of Psychiatry, Hospital for Sick Children, Toronto, Ontario, Canada; Genetics & Genome Biology Program, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Anne S Bassett
- The Dalglish Family 22q Clinic, University Health Network, Toronto, Ontario, Canada; Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada; Genetics & Genome Biology Program, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada; Clinical Genetics Research Program and Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.
| | - Donna M McDonald-McGinn
- The 22q and You Center, Clinical Genetics Center, and Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, PA; Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA; Department of Human Biology and Medical Genetics, Sapienza University, Rome, Italy.
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Mustillo PJ, Sullivan KE, Chinn IK, Notarangelo LD, Haddad E, Davies EG, de la Morena MT, Hartog N, Yu JE, Hernandez-Trujillo VP, Ip W, Franco J, Gambineri E, Hickey SE, Varga E, Markert ML. Clinical Practice Guidelines for the Immunological Management of Chromosome 22q11.2 Deletion Syndrome and Other Defects in Thymic Development. J Clin Immunol 2023; 43:247-270. [PMID: 36648576 PMCID: PMC9892161 DOI: 10.1007/s10875-022-01418-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 12/04/2022] [Indexed: 01/18/2023]
Abstract
Current practices vary widely regarding the immunological work-up and management of patients affected with defects in thymic development (DTD), which include chromosome 22q11.2 microdeletion syndrome (22q11.2del) and other causes of DiGeorge syndrome (DGS) and coloboma, heart defect, atresia choanae, retardation of growth and development, genital hypoplasia, ear anomalies/deafness (CHARGE) syndrome. Practice variations affect the initial and subsequent assessment of immune function, the terminology used to describe the condition and immune status, the accepted criteria for recommending live vaccines, and how often follow-up is needed based on the degree of immune compromise. The lack of consensus and widely varying practices highlight the need to establish updated immunological clinical practice guidelines. These guideline recommendations provide a comprehensive review for immunologists and other clinicians who manage immune aspects of this group of disorders.
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Affiliation(s)
- Peter J Mustillo
- Division of Allergy and Immunology, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH, 43205, USA.
| | - Kathleen E Sullivan
- Division of Allergy Immunology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Ivan K Chinn
- Division of Immunology, Allergy, and Retrovirology, Department of Pediatrics, Texas Children's Hospital, Houston, TX, 77030, USA
| | - Luigi D Notarangelo
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Elie Haddad
- Department of Pediatrics, Department of Microbiology, Infectious Diseases and Immunology, CHU Sainte-Justine, University of Montreal, Montreal, QC, H3T 1C5, Canada
| | - E Graham Davies
- Department of Immunology, Great Ormond Street Hospital and UCL Great Ormond Street Institute of Child Health, London, WC1N 3HJ, UK
| | - Maria Teresa de la Morena
- Division of Immunology, Department of Pediatrics, Seattle Children's Hospital, University of Washington, Seattle, WA, 98105, USA
| | - Nicholas Hartog
- Spectrum Health Helen DeVos Children's Hospital Department of Allergy and Immunology, Michigan State University College of Human Medicine, East Lansing, USA
| | - Joyce E Yu
- Division of Allergy, Immunology & Rheumatology, Department of Pediatrics, Columbia University Irving Medical Center, New York, NY, USA
| | | | - Winnie Ip
- Department of Immunology, Great Ormond Street Hospital and UCL Great Ormond Street Institute of Child Health, London, WC1N 3JH, UK
| | - Jose Franco
- Grupo de Inmunodeficiencias Primarias, Facultad de Medicina, Universidad de Antioquia UdeA, Medellin, Colombia
| | - Eleonora Gambineri
- Department of "NEUROFARBA", Section of Child's Health, University of Florence, Florence, Italy
- Centre of Excellence, Division of Pediatric Oncology/Hematology, Meyer Children's Hospital IRCCS, Florence, Italy
| | - Scott E Hickey
- Division of Genetic & Genomic Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH, 43205, USA
| | - Elizabeth Varga
- Institute for Genomic Medicine, Nationwide Children's Hospital, Columbus, OH, 43205, USA
| | - M Louise Markert
- Department of Immunology, Duke University Medical Center, Durham, NC, 27710, USA
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Safety of Live Immunization in DiGeorge Syndrome: A Retrospective Single-Center Study in Korea, 2005-2021. Vaccines (Basel) 2022; 10:vaccines10122165. [PMID: 36560575 PMCID: PMC9781824 DOI: 10.3390/vaccines10122165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022] Open
Abstract
Live immunization is contraindicated in patients with DiGeorge syndrome (DGS). We retrospectively investigated the occurrence of adverse events after live immunization in patients with DGS in Korea. The data of patients matching the International Classification of Disease-10 code of DGS (D82.1) at Severance Hospital Seoul, Korea, were extracted; patients without genetically diagnosed DGS were excluded. Based on T cell immunity status, the included patients were categorized into group A (CD3 < 500 or CD8 < 200 cells/mm3); group B (CD3 ≥ 500 and CD8 ≥ 200 cells/mm3); or group C (unknown). Among 94 patients, 38 (~40%, group A: 8 [21%]; group B: 30 [79%]) underwent immunological testing and 73 (~80%) received at least one live immunization (measles−mumps−rubella vaccination was most common [66/94, ~70%]). Fifty adverse events (fever [n = 29], upper respiratory infection [n = 9], diarrhea [n = 4], rash [n = 3], thrombocytopenia [n = 3], injection site pus [n = 1], and febrile convulsion [n = 1]) were observed; 13 (26%) occurred in group A, with no significant difference in incidence between groups A and B. Serious adverse events, including intensive care unit hospitalization or death, or diseases due to vaccine strains were not observed. In this study, live immunization was well tolerated by patients with partial DGS.
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Urschel D, Hernandez-Trujillo VP. Spectrum of Genetic T-Cell Disorders from 22q11.2DS to CHARGE. Clin Rev Allergy Immunol 2022; 63:99-105. [PMID: 35133619 DOI: 10.1007/s12016-022-08927-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/13/2022] [Indexed: 01/12/2023]
Abstract
Improved genetic testing has led to recognition of a diverse group of disorders of inborn errors of immunity that present as primarily T-cell defects. These disorders present with variable degrees of immunodeficiency, autoimmunity, multiple organ system dysfunction, and neurocognitive defects. 22q11.2 deletion syndrome, commonly known as DiGeorge syndrome, represents the most common disorder on this spectrum. In most individuals, a 3 Mb deletion of 22q11 results in haploinsufficiency of 90 known genes and clinical complications of varying severity. These include cardiac, endocrine, gastrointestinal, renal, palatal, genitourinary, and neurocognitive anomalies. Multidisciplinary treatment also includes pediatrics/general practitioners, genetic counseling, surgery, interventional therapy, and psychology/psychiatry. Chromosome 10p deletion, TBX1 mutation, CHD7 mutation, Jacobsen syndrome, and FOXN1 deficiency manifest with similar overlapping clinical presentations and T-cell defects. Recognition of the underlying disorder and pathogenesis is essential for improved outcomes. Diagnosing and treating these heterogenous conditions are a challenge and rapidly improving with new diagnostic tools. Collectively, these disorders are an example of the complex penetrance and severity of genetic disorders, importance of translational diagnostics, and a guide for multidisciplinary treatment.
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Affiliation(s)
- Daniel Urschel
- Department of Medical Education, Nicklaus Children's Hospital, Miami, FL, USA. .,Division of Allergy and Immunology, Nicklaus Children's Hospital, Miami, FL, USA. .,Allergy and Immunology Care Center of South Florida, Miami Lakes, FL, USA.
| | - Vivian P Hernandez-Trujillo
- Department of Medical Education, Nicklaus Children's Hospital, Miami, FL, USA.,Division of Allergy and Immunology, Nicklaus Children's Hospital, Miami, FL, USA.,Allergy and Immunology Care Center of South Florida, Miami Lakes, FL, USA
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Suresh S, Zafack J, Pham-Huy A, Derfalvi B, Sadarangani M, McConnell A, Tapiéro B, Halperin SA, De Serres G, M Pernica J, Top KA. Physician vaccination practices in mild to moderate inborn errors of immunity and retrospective review of vaccine completeness in IEI: results from the Canadian Immunization Research Network. ALLERGY, ASTHMA, AND CLINICAL IMMUNOLOGY : OFFICIAL JOURNAL OF THE CANADIAN SOCIETY OF ALLERGY AND CLINICAL IMMUNOLOGY 2022; 18:32. [PMID: 35397595 PMCID: PMC8994318 DOI: 10.1186/s13223-022-00667-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 03/08/2022] [Indexed: 11/26/2022]
Abstract
Background and objectives Safety and effectiveness concerns may preclude physicians from recommending vaccination in mild/moderate inborn errors of immunity (IEI). This study describes attitudes and practices regarding vaccination among physicians who care for patients with mild/moderate B cell or mild/moderate combined immunodeficiencies (CID) and vaccination completeness among patients diagnosed with IEIs. Methods Canadian physicians caring for children with IEI were surveyed about attitudes and practices regarding vaccination in mild/moderate IEI. Following informed consent, immunization records of pediatric patients with IEI evaluated before 7 years of age were reviewed. Vaccine completeness was defined at age 2 years as 4 doses of diphtheria-tetanus-pertussis (DTaP), 3 doses pneumococcal conjugate (PCV), and 1 dose measles-mumps-rubella (MMR) vaccines. At 7 years 5 doses of DTP and 2 doses MMR were required. Results Forty-five physicians from 8 provinces completed the survey. Most recommended inactivated vaccines for B cell deficiency: (84% (38/45) and CID (73% (33/45). Fewer recommended live attenuated vaccines (B cell: 53% (24/45), CID 31% (14/45)). Of 96 patients with IEI recruited across 7 centers, vaccination completeness at age 2 was 25/43 (58%) for predominantly antibody, 3/13 (23%) for CID, 7/35 (20%) for CID with syndromic features, and 4/4 (100%) for innate/phagocyte defects. Completeness at age 7 was 15%, 17%, 5%, and 33%, respectively. Conclusion Most physicians surveyed recommended inactivated vaccines in children with mild to moderate IEI. Vaccine completeness for all IEI was low, particularly at age 7. Further studies should address the reasons for low vaccine uptake among children with IEI and whether those with mild-moderate IEI, where vaccination is recommended, eventually receive all indicated vaccines. Supplementary Information The online version contains supplementary material available at 10.1186/s13223-022-00667-1.
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Affiliation(s)
- Sneha Suresh
- Division of Immunology, Department of Pediatrics, Edmonton Clinic Health Academy, 3-529, 11405 87 Ave, Edmonton, AB, T6G 1C9, Canada. .,Division of Infectious Disease and IHOPE, Department of Paediatrics, Stollery Children's Hospital, University of Alberta, Edmonton, Canada.
| | | | - Anne Pham-Huy
- Division of Infectious Diseases, Immunology and Allergy, Department of Paediatrics, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, Canada
| | - Beata Derfalvi
- Division of Immunology, Departments of Paediatrics and Microbiology and Immunology, IWK Health Centre, Dalhousie University, Halifax, Canada
| | - Manish Sadarangani
- Vaccine Evaluation Center, BC Children's Hospital Research Institute, Department of Pediatrics, University of British Columbia, Vancouver, Canada
| | - Athena McConnell
- Division of Infectious Diseases, Department of Pediatrics, Jim Pattison Children's Hospital, University of Saskatchewan, Saskatoon, Canada
| | - Bruce Tapiéro
- Division of Infectious Diseases, Department of Pediatrics, CHU Sainte Justine, Université de Montreal, Montreal, Canada
| | - Scott A Halperin
- Departments of Paediatrics and Microbiology and Immunology, Canadian Center for Vaccinology IWK Health Centre, Dalhousie University, Halifax, Canada
| | - Gaston De Serres
- Department of Social and Preventive Medicine, Institut Nationale de Santé Publique du Québec, Université Laval, Québec, Canada
| | - Jeffrey M Pernica
- Division of Infectious Diseases, Department of Pediatrics, McMaster University, Hamilton, Canada
| | - Karina A Top
- Departments of Pediatrics and Community Health and Epidemiology, Canadian Center for Vaccinology, IWK Health Centre, Dalhousie University, Halifax, Canada.
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Nissan E, Katz U, Levy-Shraga Y, Frizinsky S, Carmel E, Gothelf D, Somech R. Clinical Features in a Large Cohort of Patients With 22q11.2 Deletion Syndrome. J Pediatr 2021; 238:215-220.e5. [PMID: 34284033 DOI: 10.1016/j.jpeds.2021.07.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 07/09/2021] [Accepted: 07/13/2021] [Indexed: 12/28/2022]
Abstract
OBJECTIVES To evaluate various clinical aspects, specifically regarding immune status, in a large cohort of patients with DiGeorge syndrome. STUDY DESIGN Data were collected for 98 patients with DiGeorge syndrome treated at a tertiary medical center. This included general information, laboratory results, and clinical features. RESULTS The median age at diagnosis was 2.0 years (range, 0.0-36.5 years). The most common symptoms that led to diagnosis were congenital heart defect, speech delay, palate anomalies, and developmental delay. Common clinical features included recurrent infections (76 patients), congenital heart diseases (61 patients), and otorhinolaryngology disorders (61 patients). Twenty patients had anemia; the incidence was relatively high among patients aged 6-59 months. Thrombocytopenia was present in 20 patients. Recurrent chest infections were significantly higher in patients with T cell and T cell subset deficiencies. Decreased T cell receptor excision circles were more common with increasing age (P < .001). Of the 27 patients hospitalized due to infection, pneumonia was a leading cause in 13. CONCLUSIONS Awareness of DiGeorge syndrome's typical and uncommon characteristics is important to improve diagnosis, treatment, surveillance, and follow-up.
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Affiliation(s)
- Ella Nissan
- Pediatric Department A and Immunology Service, Edmond and Lily Safra Children's Hospital, Jeffrey Modell Foundation Center, Tel Hashomer, Israel; Sheba Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Uriel Katz
- Sheba Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Edmond Safra International Congenital Heart Center, Edmond and Lily Safra Children's Hospital, Ramat Gan, Israel
| | - Yael Levy-Shraga
- Sheba Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Pediatric Endocrinology Unit, Edmond and Lily Safra Children's Hospital, Ramat Gan, Israel
| | - Shirly Frizinsky
- Pediatric Department A and Immunology Service, Edmond and Lily Safra Children's Hospital, Jeffrey Modell Foundation Center, Tel Hashomer, Israel; Sheba Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Eldar Carmel
- Sheba Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Otorhinolaryngology Head and Neck Surgery Department, Edmond and Lily Safra Children's Hospital, Ramat Gan, Israel
| | - Doron Gothelf
- Sheba Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Child and Adolescent Psychiatry Division, Edmond and Lily Safra Children's Hospital, Ramat Gan, Israel; Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Raz Somech
- Pediatric Department A and Immunology Service, Edmond and Lily Safra Children's Hospital, Jeffrey Modell Foundation Center, Tel Hashomer, Israel; Sheba Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Pham-Huy A, Top KA, Constantinescu C, Seow CH, El-Chaâr D. Utilisation et incidence des agents biologiques à base d’anticorps monoclonaux durant la grossesse. CMAJ 2021; 193:E1537-E1544. [PMID: 34607850 PMCID: PMC8568088 DOI: 10.1503/cmaj.202391-f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Anne Pham-Huy
- Division d'infectiologie, immunologie et allergie (Pham-Huy), Hôpital pédiatrique de l'Est de l'Ontario; Faculté de médecine (Pham-Huy), Université d'Ottawa, Ottawa, Ont.; Centre de santé IWK, Division d'infectiologie, Centre canadien de vaccinologie (Top), Halifax, N.-É.; Faculté de médecine de l'Université de Calgary, Division d'infectiologie pédiatrique (Constantinescu); Division de gastro-entérologie et d'hépatologie (Seow), Départements de médecine et de sciences de la santé communautaire, Université de Calgary, Calgary, Alb.; Groupe de recherche OMNI de l'IRHO (El-Chaâr), Programme d'épidémiologie clinique; Service d'obstétrique, gynécologie et soins aux nouveau-nés (El-Chaâr), Hôpital d'Ottawa, Ottawa, Ont.
| | - Karina A Top
- Division d'infectiologie, immunologie et allergie (Pham-Huy), Hôpital pédiatrique de l'Est de l'Ontario; Faculté de médecine (Pham-Huy), Université d'Ottawa, Ottawa, Ont.; Centre de santé IWK, Division d'infectiologie, Centre canadien de vaccinologie (Top), Halifax, N.-É.; Faculté de médecine de l'Université de Calgary, Division d'infectiologie pédiatrique (Constantinescu); Division de gastro-entérologie et d'hépatologie (Seow), Départements de médecine et de sciences de la santé communautaire, Université de Calgary, Calgary, Alb.; Groupe de recherche OMNI de l'IRHO (El-Chaâr), Programme d'épidémiologie clinique; Service d'obstétrique, gynécologie et soins aux nouveau-nés (El-Chaâr), Hôpital d'Ottawa, Ottawa, Ont
| | - Cora Constantinescu
- Division d'infectiologie, immunologie et allergie (Pham-Huy), Hôpital pédiatrique de l'Est de l'Ontario; Faculté de médecine (Pham-Huy), Université d'Ottawa, Ottawa, Ont.; Centre de santé IWK, Division d'infectiologie, Centre canadien de vaccinologie (Top), Halifax, N.-É.; Faculté de médecine de l'Université de Calgary, Division d'infectiologie pédiatrique (Constantinescu); Division de gastro-entérologie et d'hépatologie (Seow), Départements de médecine et de sciences de la santé communautaire, Université de Calgary, Calgary, Alb.; Groupe de recherche OMNI de l'IRHO (El-Chaâr), Programme d'épidémiologie clinique; Service d'obstétrique, gynécologie et soins aux nouveau-nés (El-Chaâr), Hôpital d'Ottawa, Ottawa, Ont
| | - Cynthia H Seow
- Division d'infectiologie, immunologie et allergie (Pham-Huy), Hôpital pédiatrique de l'Est de l'Ontario; Faculté de médecine (Pham-Huy), Université d'Ottawa, Ottawa, Ont.; Centre de santé IWK, Division d'infectiologie, Centre canadien de vaccinologie (Top), Halifax, N.-É.; Faculté de médecine de l'Université de Calgary, Division d'infectiologie pédiatrique (Constantinescu); Division de gastro-entérologie et d'hépatologie (Seow), Départements de médecine et de sciences de la santé communautaire, Université de Calgary, Calgary, Alb.; Groupe de recherche OMNI de l'IRHO (El-Chaâr), Programme d'épidémiologie clinique; Service d'obstétrique, gynécologie et soins aux nouveau-nés (El-Chaâr), Hôpital d'Ottawa, Ottawa, Ont
| | - Darine El-Chaâr
- Division d'infectiologie, immunologie et allergie (Pham-Huy), Hôpital pédiatrique de l'Est de l'Ontario; Faculté de médecine (Pham-Huy), Université d'Ottawa, Ottawa, Ont.; Centre de santé IWK, Division d'infectiologie, Centre canadien de vaccinologie (Top), Halifax, N.-É.; Faculté de médecine de l'Université de Calgary, Division d'infectiologie pédiatrique (Constantinescu); Division de gastro-entérologie et d'hépatologie (Seow), Départements de médecine et de sciences de la santé communautaire, Université de Calgary, Calgary, Alb.; Groupe de recherche OMNI de l'IRHO (El-Chaâr), Programme d'épidémiologie clinique; Service d'obstétrique, gynécologie et soins aux nouveau-nés (El-Chaâr), Hôpital d'Ottawa, Ottawa, Ont
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Pham-Huy A, Top KA, Constantinescu C, Seow CH, El-Chaâr D. The use and impact of monoclonal antibody biologics during pregnancy. CMAJ 2021; 193:E1129-E1136. [PMID: 34312166 PMCID: PMC8321301 DOI: 10.1503/cmaj.202391] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Anne Pham-Huy
- Division of Infectious Diseases, Immunology and Allergy (Pham-Huy), Children's Hospital of Eastern Ontario; Faculty of Medicine (Pham-Huy), University of Ottawa, Ottawa, Ont.; IWK Health Centre, Division of Infectious Diseases, Canadian Center for Vaccinology (Top), Halifax, NS; University of Calgary Faculty of Medicine, Division of Pediatric Infectious Diseases (Constantinescu); Division of Gastroenterology and Hepatology (Seow), Departments of Medicine and Community Health Sciences, University of Calgary, Calgary, Alta.; OHRI OMNI Research Group (El-Chaâr), Clinical Epidemiology Program; Department of Obstetrics, Gynecology and Newborn Care (El-Chaâr), Ottawa Hospital, Ottawa, Ont.
| | - Karina A Top
- Division of Infectious Diseases, Immunology and Allergy (Pham-Huy), Children's Hospital of Eastern Ontario; Faculty of Medicine (Pham-Huy), University of Ottawa, Ottawa, Ont.; IWK Health Centre, Division of Infectious Diseases, Canadian Center for Vaccinology (Top), Halifax, NS; University of Calgary Faculty of Medicine, Division of Pediatric Infectious Diseases (Constantinescu); Division of Gastroenterology and Hepatology (Seow), Departments of Medicine and Community Health Sciences, University of Calgary, Calgary, Alta.; OHRI OMNI Research Group (El-Chaâr), Clinical Epidemiology Program; Department of Obstetrics, Gynecology and Newborn Care (El-Chaâr), Ottawa Hospital, Ottawa, Ont
| | - Cora Constantinescu
- Division of Infectious Diseases, Immunology and Allergy (Pham-Huy), Children's Hospital of Eastern Ontario; Faculty of Medicine (Pham-Huy), University of Ottawa, Ottawa, Ont.; IWK Health Centre, Division of Infectious Diseases, Canadian Center for Vaccinology (Top), Halifax, NS; University of Calgary Faculty of Medicine, Division of Pediatric Infectious Diseases (Constantinescu); Division of Gastroenterology and Hepatology (Seow), Departments of Medicine and Community Health Sciences, University of Calgary, Calgary, Alta.; OHRI OMNI Research Group (El-Chaâr), Clinical Epidemiology Program; Department of Obstetrics, Gynecology and Newborn Care (El-Chaâr), Ottawa Hospital, Ottawa, Ont
| | - Cynthia H Seow
- Division of Infectious Diseases, Immunology and Allergy (Pham-Huy), Children's Hospital of Eastern Ontario; Faculty of Medicine (Pham-Huy), University of Ottawa, Ottawa, Ont.; IWK Health Centre, Division of Infectious Diseases, Canadian Center for Vaccinology (Top), Halifax, NS; University of Calgary Faculty of Medicine, Division of Pediatric Infectious Diseases (Constantinescu); Division of Gastroenterology and Hepatology (Seow), Departments of Medicine and Community Health Sciences, University of Calgary, Calgary, Alta.; OHRI OMNI Research Group (El-Chaâr), Clinical Epidemiology Program; Department of Obstetrics, Gynecology and Newborn Care (El-Chaâr), Ottawa Hospital, Ottawa, Ont
| | - Darine El-Chaâr
- Division of Infectious Diseases, Immunology and Allergy (Pham-Huy), Children's Hospital of Eastern Ontario; Faculty of Medicine (Pham-Huy), University of Ottawa, Ottawa, Ont.; IWK Health Centre, Division of Infectious Diseases, Canadian Center for Vaccinology (Top), Halifax, NS; University of Calgary Faculty of Medicine, Division of Pediatric Infectious Diseases (Constantinescu); Division of Gastroenterology and Hepatology (Seow), Departments of Medicine and Community Health Sciences, University of Calgary, Calgary, Alta.; OHRI OMNI Research Group (El-Chaâr), Clinical Epidemiology Program; Department of Obstetrics, Gynecology and Newborn Care (El-Chaâr), Ottawa Hospital, Ottawa, Ont
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9
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Collins C, Sharpe E, Silber A, Kulke S, Hsieh EWY. Congenital Athymia: Genetic Etiologies, Clinical Manifestations, Diagnosis, and Treatment. J Clin Immunol 2021; 41:881-895. [PMID: 33987750 PMCID: PMC8249278 DOI: 10.1007/s10875-021-01059-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 05/03/2021] [Indexed: 12/17/2022]
Abstract
Congenital athymia is an ultra-rare disease characterized by the absence of a functioning thymus. It is associated with several genetic and syndromic disorders including FOXN1 deficiency, 22q11.2 deletion, CHARGE Syndrome (Coloboma, Heart defects, Atresia of the nasal choanae, Retardation of growth and development, Genitourinary anomalies, and Ear anomalies), and Complete DiGeorge Syndrome. Congenital athymia can result from defects in genes that impact thymic organ development such as FOXN1 and PAX1 or from genes that are involved in development of the entire midline region, such as TBX1 within the 22q11.2 region, CHD7, and FOXI3. Patients with congenital athymia have profound immunodeficiency, increased susceptibility to infections, and frequently, autologous graft-versus-host disease (GVHD). Athymic patients often present with absent T cells but normal numbers of B cells and Natural Killer cells (T-B+NK+), similar to a phenotype of severe combined immunodeficiency (SCID); these patients may require additional steps to confirm the diagnosis if no known genetic cause of athymia is identified. However, distinguishing athymia from SCID is crucial, as treatments differ for these conditions. Cultured thymus tissue is being investigated as a treatment for congenital athymia. Here, we review what is known about the epidemiology, underlying etiologies, clinical manifestations, and treatments for congenital athymia.
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Affiliation(s)
- Cathleen Collins
- Department of Pediatrics, Division of Allergy Immunology, Rady Children's Hospital, University of California San Diego, San Diego, CA, USA
| | | | | | - Sarah Kulke
- Enzyvant Therapeutics, Inc, Cambridge, MA, USA
| | - Elena W Y Hsieh
- Department of Pediatrics, Section of Allergy and Immunology, Children's Hospital Colorado, University of Colorado School of Medicine, Aurora, CO, USA.
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO, USA.
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10
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Abstract
Evaluation of antibodies produced after immunization is central to immune deficiency diagnosis. This includes assessment of responses to routine immunizations as well as to vaccines administered specifically for diagnosis. Here, we present the basic concepts of the humoral immune response and their relevance for vaccine composition and diagnosis of immune deficiency. Current vaccines are discussed, including nonviable protein and glycoprotein vaccines, pure polysaccharide vaccines, polysaccharide-protein conjugate vaccines, and live agent vaccines. Diagnostic and therapeutic applications of vaccine antibody measurement are discussed in depth. Important adverse effects of vaccines are also presented.
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Characterization of Infants with Idiopathic Transient and Persistent T Cell Lymphopenia Identified by Newborn Screening-a Single-Center Experience in New York State. J Clin Immunol 2021; 41:610-620. [PMID: 33411154 DOI: 10.1007/s10875-020-00957-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 12/26/2020] [Indexed: 12/15/2022]
Abstract
PURPOSE Newborn screening (NBS) quantifies T cell receptor excision circles (TREC) and identifies infants with T cell lymphopenia (TCL). This study elucidates the demographics, laboratory characteristics, genetics, and clinical outcomes following live viral vaccine administration of term infants with transient or persistent idiopathic TCL. METHODS A single-center retrospective analysis was performed from September 2010 through June 2018. Laboratory variables were compared with Mann-Whitney tests. Correlations between initial TREC levels and T cell counts were determined by Spearman tests. RESULTS Twenty-two transient and 21 persistent TCL infants were identified. Males comprised 68% of the transient and 52% of the persistent TCL cohorts. Whites comprised 23% of the transient and 29% of the persistent cohorts. Median initial TREC levels did not differ (66 vs. 60 TRECs/μL of blood, P = 0.58). The transient cohort had higher median initial CD3+ (2135 vs. 1169 cells/μL, P < 0.001), CD4+ (1460 vs. 866 cells/μL, P < 0.001), and CD8+ (538 vs. 277 cells/μL, P < 0.001) counts. The median age of resolution for the transient cohort was 38 days. Genetic testing revealed 2 genes of interest which warrant further study and several variants of uncertain significance in immunology-related genes in the persistent cohort. 19 transient and 14 persistent subjects received the initial rotavirus and/or MMRV immunization. No adverse reactions to live viral vaccines were reported in either cohort. CONCLUSION Transient and persistent TCL infants differ by demographic, laboratory, and clinical characteristics. Select transient and persistent TCL patients may safely receive live attenuated viral vaccines, but larger confirmatory studies are needed.
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12
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Berkhout A, Preece K, Varghese V, Prasad V, Heussler H, Clark J, Wen SCH. Optimising immunisation in children with 22q11 microdeletion. Ther Adv Vaccines Immunother 2020; 8:2515135520957139. [PMID: 33150298 PMCID: PMC7580130 DOI: 10.1177/2515135520957139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 07/21/2020] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND The condition known as 22q11 microdeletion syndrome has a broad phenotypic spectrum, with many affected individuals experiencing mild-to-moderate immunodeficiency. Currently, there are significant variations in live vaccine practices and immunological testing prior to live vaccine administration due to safety concerns and limited established guidelines. METHODS Queensland Children's Hospital (QCH) Child Development Unit, offers a state-wide 22q11 microdeletion clinic. This is a retrospective single-centre review, capturing the majority of children with 22q11 microdeletion in Queensland, Australia. We describe the live vaccination status of 134 children, age 0 to 18 years under our care between 2000 and 2018, adverse events following immunisation (AEFI) and the proportion of children who received additional pneumococcal coverage. An immunological investigation pathway prior to live vaccine administration is proposed. RESULTS Of the 134 children, 124 were eligible for live vaccinations as per the Australian National Immunisation Program: 82% had received dose one of measles, mumps and rubella (MMR) vaccine, 77% had completed MMR dose two and 66% had completed varicella immunisation. There were no AEFI notifications reported. Of the total sample of children, 18% received a fourth dose of conjugate pneumococcal vaccine (Prevenar 7 or 13) and 16% received a dose of Pneumovax 23 from 4 years of age. Immunology workup practices were demonstrated to vary widely prior to live vaccine administration. Most patients' immune profiles were consistent with mild-to-moderate immunodeficiency. CONCLUSION We propose an immunological investigation and vaccination pathway with the aim of providing guidance and consistency to clinicians caring for children with 22q11 microdeletion.
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Affiliation(s)
- Angela Berkhout
- The Queensland Children’s Hospital Brisbane, Infection Prevention & Managament, 501 Stanley St, South Brisbane, QLD 4101, Australia
- School of Clinical Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Kahn Preece
- The John Hunter Children’s Hospital, Newcastle, New South Wales, Australia
| | - Vanil Varghese
- The Queensland Children’s Hospital, Brisbane, Queensland, Australia. School of Clinical Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Vinita Prasad
- The Queensland Children’s Hospital, Brisbane, Queensland, Australia. School of Clinical Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Helen Heussler
- The Queensland Children’s Hospital, Brisbane, Queensland, Australia. School of Clinical Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Julia Clark
- The Queensland Children’s Hospital, Brisbane, Queensland, Australia. School of Clinical Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Sophie C. H. Wen
- The Queensland Children’s Hospital, Brisbane, Queensland, Australia. School of Clinical Medicine, The University of Queensland, Brisbane, Queensland, Australia
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13
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Access to Multidisciplinary Care for Patients With 22q11.2 Deletion Syndrome: Identifying Breakdowns in the Screening Process. J Craniofac Surg 2020; 31:428-431. [PMID: 31917711 DOI: 10.1097/scs.0000000000006142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The 22q11.2 deletion syndrome affects approximately 1 in 4000 live births and involves cardiac defects, immunodeficiency, and endocrine disruption. The complexity of diagnosis and multifaceted care often leads to fragmented management in the short and long term. With the purpose of developing an effective multidisciplinary program, the authors aimed to identify the deficiencies in current screening and referral processes among the teams required in the care for patients with 22q11.2 deletion syndrome. A retrospective chart review was conducted at our institution between 2001 and 2016. Patients with confirmed 22q11.2 deletion diagnoses between the ages of 0 and 28 were included. A list of 15 relevant specialties that should evaluate patients with 22q11.2 deletion syndrome was created according to established guidelines. Patient medical and demographic information were collected and analyzed. A total of 270 patients were included. Mean age at diagnosis was 3.3 years. On average, patients visited 6 of 15 departments (1-14). Only 8.8% of patients visited >10 specialties. The majority were seen by Cardiology, Allergy and Immunology, Genetics, and Speech (57.4-87.8%). A minority were seen by Hematology and Oncology, Sleep Therapy, and Physical Therapy (13.3-16.3%). Only 34.1% encountered plastic surgery. Negative correlation (-0.128; P = 0.035) was demonstrated between patients' age at diagnosis and number of specialty teams encountered. This study highlights the current underutilization of services required to manage patients with 22q11.2 deletion syndrome. While screening guidelines have been established, implementation can be challenging as it requires efficient care coordination between teams. Moving forward, the authors believe that a multidisciplinary clinical approach to streamline patient care is necessary.
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14
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Sullivan KE. Chromosome 22q11.2 deletion syndrome and DiGeorge syndrome. Immunol Rev 2019; 287:186-201. [PMID: 30565249 DOI: 10.1111/imr.12701] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 07/30/2018] [Indexed: 12/19/2022]
Abstract
Chromosome 22q11.2 deletion syndrome is the most common microdeletion syndrome in humans. The effects are protean and highly variable, making a unified approach difficult. Nevertheless, commonalities have been identified and white papers with recommended evaluations and anticipatory guidance have been published. This review will cover the immune system in detail and discuss both the primary features and the secondary features related to thymic hypoplasia. A brief discussion of the other organ system involvement will be provided for context. The immune system, percolating throughout the body can impact the function of other organs through allergy or autoimmune disease affecting organs in deleterious manners. Our work has shown that the primary effect of thymic hypoplasia is to restrict T cell production. Subsequent homeostatic proliferation and perhaps other factors drive a Th2 polarization, most obvious in adulthood. This contributes to atopic risk in this population. Thymic hypoplasia also contributes to low regulatory T cells and this may be part of the overall increased risk of autoimmunity. Collectively, the effects are complex and often age-dependent. Future goals of improving thymic function or augmenting thymic volume may offer a direct intervention to ameliorate infections, atopy, and autoimmunity.
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Affiliation(s)
- Kathleen E Sullivan
- The Children's Hospital of Philadelphia, The University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
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15
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Suresh S, Upton J, Green M, Pham-Huy A, Posfay-Barbe KM, Michaels MG, Top KA, Avitzur Y, Burton C, Chong PP, Danziger-Isakov L, Dipchand AI, Hébert D, Kumar D, Morris SK, Nalli N, Ng VL, Nicholas SK, Robinson JL, Solomon M, Tapiero B, Verma A, Walter JE, Allen UD. Live vaccines after pediatric solid organ transplant: Proceedings of a consensus meeting, 2018. Pediatr Transplant 2019; 23:e13571. [PMID: 31497926 DOI: 10.1111/petr.13571] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 07/12/2019] [Accepted: 07/26/2019] [Indexed: 12/11/2022]
Abstract
Growing evidence suggests receipt of live-attenuated viral vaccines after solid organ transplant (SOT) has occurred and is safe and needed due to lapses in herd immunity. A 2-day consortium of experts in infectious diseases, transplantation, vaccinology, and immunology was held with the objective to review evidence and create expert recommendations for clinicians when considering live viral vaccines post-SOT. For consideration of VV and MMR post-transplant, evidence exists only for kidney and liver transplant recipients. For MMR vaccine post-SOT, consider vaccination during outbreak or travel to endemic risk areas. Patients who have received antiproliferative agents (eg. mycophenolate mofetil), T cell-depleting agents, or rituximab; or have persistently elevated EBV viral loads, or are in a state of functional tolerance, should be vaccinated with caution and have a more in-depth evaluation to define benefit of vaccination and net state of immune suppression prior to considering vaccination. MMR and/or VV (not combined MMRV) is considered to be safe in patients who are clinically well, are greater than 1 year after liver or kidney transplant and 2 months after acute rejection episode, can be closely monitored, and meet specific criteria of "low-level" immune suppression as defined in the document.
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Affiliation(s)
- Sneha Suresh
- Division of Infectious Disease and IHOPE, Department of Pediatrics, Stollery Children's Hospital, University of Alberta, Edmonton, AB, Canada
| | - Julia Upton
- Division of Immunology and Allergy, Department of Paediatrics, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Michael Green
- Division of Infectious Diseases, Department of Pediatrics, Pediatric Transplant Infectious Diseases, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - Anne Pham-Huy
- Division of Infectious Diseases, Immunology and Allergy, Department of Paediatrics, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, ON, Canada
| | - Klara M Posfay-Barbe
- Division of Pediatric Infectious Diseases, Department of Paediatrics, University Hospitals of Geneva, Geneva, Switzerland
| | - Marian G Michaels
- Division of Infectious Diseases, Department of Pediatrics, Pediatric Transplant Infectious Diseases, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - Karina A Top
- Division of Infectious Diseases, Department of Pediatrics, Dalhousie University, Canadian Center for Vaccinology IWK Health Centre, Halifax, NS, Canada
| | - Yaron Avitzur
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, Transplant and Regenerative Medicine Centre, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Catherine Burton
- Division of Infectious Diseases, Department of Paediatrics, Stollery Children's Hospital, University of Alberta, Edmonton, AB, Canada
| | - Pearlie P Chong
- Division of Infectious Diseases, Department of Medicine, UT Southwestern Medical Center, Dallas, Texas
| | - Lara Danziger-Isakov
- Division of Infectious Diseases, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio
| | - Anne I Dipchand
- Department of Paediatrics, Labatt Family Heart Centre, Transplant and Regenerative Medicine Centre, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Diane Hébert
- Division of Nephrology, Department of Paediatrics, Transplant and Regenerative Medicine Centre, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Deepali Kumar
- Department of Medicine, Transplant Infectious Diseases, University Health Network, Toronto, ON, Canada
| | - Shaun K Morris
- Division of Infectious Diseases, Department of Paediatrics, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Nadya Nalli
- Department of Pharmacy, Department of Paediatrics, Transplant and Regenerative Medicine Centre, Hospital for Sick Children, Toronto, ON, Canada
| | - Vicky Lee Ng
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, Transplant and Regenerative Medicine Centre, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Sarah Kogan Nicholas
- Division of Immunology, Allergy and Rheumatology, Department of Pediatrics, Texas Children's Hospital, Houston, Texas
| | - Joan L Robinson
- Division of Infectious Diseases and Immunology, Department of Pediatrics, Stollery Children's Hospital, University of Alberta, Edmonton, AB, Canada
| | - Melinda Solomon
- Division of Respiratory Medicine, Department of Paediatrics, Transplant and Regenerative Medicine Centre, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Bruce Tapiero
- Division of Infectious Diseases, Department of Paediatrics, CHU Sainte Justine, University of Montreal, Montreal, QC, Canada
| | - Anita Verma
- Department of Infection Science, Kings College Hospital, London, UK
| | - Jolan E Walter
- Division of Pediatric Allergy/Immunology, Department of Pediatrics, University of South Florida, John's Hopkins All Children's Hospital, St. Petersburg, Florida.,Division of Pediatric Allergy/Immunology, Massachusetts General Hospital for Children, Boston, Massachusetts
| | - Upton D Allen
- Division of Infectious Diseases, Department of Paediatrics, Transplant and Regenerative Medicine Centre, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
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16
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Pöyhönen L, Bustamante J, Casanova JL, Jouanguy E, Zhang Q. Life-Threatening Infections Due to Live-Attenuated Vaccines: Early Manifestations of Inborn Errors of Immunity. J Clin Immunol 2019; 39:376-390. [PMID: 31123910 DOI: 10.1007/s10875-019-00642-3] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 05/02/2019] [Indexed: 02/07/2023]
Abstract
Live-attenuated vaccines (LAVs) can protect humans against 12 viral and three bacterial diseases. By definition, any clinical infection caused by a LAV that is sufficiently severe to require medical intervention attests to an inherited or acquired immunodeficiency that must be diagnosed or identified. Self-healing infections can also result from milder forms of immunodeficiency. We review here the inherited forms of immunodeficiency underlying severe infections of LAVs. Inborn errors of immunity (IEIs) underlying bacille Calmette-Guérin (BCG), oral poliovirus (OPV), vaccine measles virus (vMeV), and oral rotavirus vaccine (ORV) disease have been described from 1951, 1963, 1966, and 2009 onward, respectively. For each of these four LAVs, the underlying IEIs show immunological homogeneity despite genetic heterogeneity. Specifically, BCG disease is due to inborn errors of IFN-γ immunity, OPV disease to inborn errors of B cell immunity, vMeV disease to inborn errors of IFN-α/β and IFN-λ immunity, and ORV disease to adaptive immunity. Severe reactions to the other 11 LAVs have been described yet remain "idiopathic," in the absence of known underlying inherited or acquired immunodeficiencies, and are warranted to be the focus of research efforts. The study of IEIs underlying life-threatening LAV infections is clinically important for the affected patients and their families, as well as immunologically, for the study of the molecular and cellular basis of host defense against both attenuated and parental pathogens.
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Affiliation(s)
- Laura Pöyhönen
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY, USA
| | - Jacinta Bustamante
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY, USA.,Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Paris, France.,Imagine Institute, Paris Descartes University, Paris, France.,Center for the Study of Primary Immunodeficiencies, AP-HP, Necker Hospital for Sick Children, Paris, France
| | - Jean-Laurent Casanova
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY, USA.,Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Paris, France.,Imagine Institute, Paris Descartes University, Paris, France.,Pediatric Hematology-Immunology Unit, Necker Hospital for Sick Children, Paris, France.,Howard Hughes Medical Institute, New York, NY, USA
| | - Emmanuelle Jouanguy
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY, USA.,Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Paris, France.,Imagine Institute, Paris Descartes University, Paris, France
| | - Qian Zhang
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY, USA.
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17
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Clinical and immunophenotypic characteristics of patients with chromosome 22q11.2 deletion syndrome: a single institution's experience. Turk Arch Pediatr 2019; 54:28-34. [PMID: 31217706 PMCID: PMC6559977 DOI: 10.14744/turkpediatriars.2019.95815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 02/25/2019] [Indexed: 11/20/2022]
Abstract
Aim The aim of this study was to identify the clinical and immunologic features of patients with 22q11.2 deletion syndrome who were followed up in our clinic. Thus, it is aimed to identify the syndrome early, choose the right treatment options according to humoral and cellular immunologic analysis, and enlighten how to follow up these kinds of patients with immunodeficiencies. Material and Methods We retrospectively collected data by reviewing the files of 11 patients with 22q11.2 deletion syndrome who were followed up in our clinic between January 2003 and January 2015. The diagnoses were based on the patients' clinical, genetic, and immunologic features. Demographic features, family history, initial symptoms on admission, physical findings, and results of immunologic studies of the patients. Age of diagnosis, treatment options, and clinical follow-up were evaluated. Results The patients' diagnosis age ranged from 1-11 months and the most common symptoms of admission were cardiac murmur and atypical facial appearance, which were detected during a routine physical examination. All patients had cardiac anomalies, and four patients had a history of cardiovascular surgery. Eight patients (72.7%) had a history of severe infection; recurrent lower respiratory tract infections were reported in six patients (54.5%), pulmonary tuberculosis in one patient (9.1%), and moniliasis resistant to treatment was detected in one patient. None of the patients required intravenous immunoglobulin replacement therapy, and antibiotic prophylaxis was administered to two patients with lymphopenia. Conclusion 22q11.2 deletion syndrome is a multi-systemic disorder that should be evaluated by a multidisciplinary team. It should be kept in mind for patients with neonatal hypocalcemic tetany or recurrent infections or atypical facial appearance with cardiac anomalies. Early diagnosis should lead to immunologic analysis and enable the choice of treatment. Preventive measures against infection is recommended for the patients with incomplete immunodeficiency, and thymus transplantation is recommended for patients with complete immunodeficiency.
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18
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Freeman AF, Cuellar-Rodriguez JM. Infections in the Immunocompromised Host. Clin Immunol 2019. [DOI: 10.1016/b978-0-7020-6896-6.00037-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Cohen JL, Crowley TB, McGinn DE, McDougall C, Unolt M, Lambert MP, Emanuel BS, Zackai EH, McDonald-McGinn DM. 22q and two: 22q11.2 deletion syndrome and coexisting conditions. Am J Med Genet A 2018; 176:2203-2214. [PMID: 30244528 DOI: 10.1002/ajmg.a.40494] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/30/2018] [Accepted: 07/11/2018] [Indexed: 01/21/2023]
Abstract
22q11.2 deletion syndrome (DS) is the most frequent copy number variant (CNV) affecting ~1/1,000 fetuses and ~1/2,000-4,000 children, resulting in recognizable but variable findings across multiple organ systems. Patients with atypical features should prompt consideration of coexisting diagnoses due to additional genome-wide mutations, CNVs, or mutations/CNVs on the other allele, unmasking autosomal recessive conditions. Importantly, a dual diagnosis compounds symptoms and impacts management. We previously reported seven patients with 22q11.2DS and: SCID, Trisomy 8 mosaicism, Bernard-Soulier, and CEDNIK syndromes. Here we present six additional unreported patients with 22q11.2DS and concurrent diagnoses. Records on 1,422 patients with 22q11.2DS, identified via FISH, microarray, or MLPA, followed in our 22q and You Center at the Children's Hospital of Philadelphia (CHOP) were reviewed to identify a dual diagnosis. In addition to our seven previously reported cases, we identified an additional six with 22q11.2DS and another coexisting condition identified via: molecular/cytogenetic studies, newborn screening, coagulation factor studies, or enzyme testing; these include CHARGE syndrome (CHD7 mutation), cystic fibrosis, a maternally inherited 17q12 deletion, G6PD deficiency, von Willebrand disease, and 1q21.1 deletion, resulting in an incidence of dual diagnoses at our center of 0.9%. The range of dual diagnoses identified in our cohort is notable, medically actionable, and may alter long-term outcome and recurrence risk counseling. Thus, our findings may support testing patients with 22q11.2DS using a combination of microarray, mutational analysis of the other allele/WES, to ensure appropriate personalized care, as formulating medical management decisions hinges on establishing the correct diagnoses in their entirety.
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Affiliation(s)
- Jennifer L Cohen
- The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | | | - Daniel E McGinn
- The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Carey McDougall
- The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Marta Unolt
- The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Department of Pediatrics and Pediatric Neuropsychiatry, "Sapienza" University of Rome and Ospedale Bambino Gesu, Rome, Italy
| | - Michele P Lambert
- The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Beverly S Emanuel
- The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Elaine H Zackai
- The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Donna M McDonald-McGinn
- The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
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21
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22
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Update: Vaccines in primary immunodeficiency. J Allergy Clin Immunol 2017; 141:474-481. [PMID: 29288077 DOI: 10.1016/j.jaci.2017.12.980] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 12/19/2017] [Accepted: 12/19/2017] [Indexed: 11/21/2022]
Abstract
Vaccines were originally developed to prevent or ameliorate infectious disease. As knowledge of immune function and appreciation of immunodeficiency has developed, researchers have used vaccine responses as a tool to characterize the phenotypes of patients exhibiting various syndromes. Thus it has become possible for a clinician to evaluate individual responses to vaccines to interrogate the immunocompetence of their patients. Although there have been many advances in these areas, we still have much to learn about the quantity and quality of humoral and cellular vaccine responses in healthy and immunodeficient subjects and how that knowledge can then be extrapolated to diagnostic purposes. Adverse effects of vaccines have been recognized for many years, especially the occurrence of infections caused by viable vaccine organisms in immunodeficient hosts. Nevertheless, vaccines are essential for disease prevention in immunodeficient patients, just as they are for healthy subjects. Clinicians must understand the appropriate and safe use of vaccines in patients with immunodeficiency. This review highlights some recent advances and ongoing challenges in application of vaccines for the diagnosis and treatment of immunodeficiencies.
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Lantin-Hermoso MR, Berger S, Bhatt AB, Richerson JE, Morrow R, Freed MD, Beekman RH, Minich LL, Ackerman MJ, Jaquiss RDB, Jenkins KJ, Mahle WT, Marino BS, Vincent JA. The Care of Children With Congenital Heart Disease in Their Primary Medical Home. Pediatrics 2017; 140:peds.2017-2607. [PMID: 29084831 DOI: 10.1542/peds.2017-2607] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Congenital heart disease (CHD) is the most common birth anomaly. With advances in repair and palliation of these complex lesions, more and more patients are surviving and are discharged from the hospital to return to their families. Patients with CHD have complex health care needs that often must be provided for or coordinated for by the primary care provider (PCP) and medical home. This policy statement aims to provide the PCP with general guidelines for the care of the child with congenital heart defects and outlines anticipated problems, serving as a repository of current knowledge in a practical, readily accessible format. A timeline approach is used, emphasizing the role of the PCP and medical home in the management of patients with CHD in their various life stages.
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Affiliation(s)
- M. Regina Lantin-Hermoso
- Section of Cardiology, Department of Pediatrics, Baylor College of Medicine, Texas Children’s Hospital Heart Center, Houston, Texas
| | - Stuart Berger
- Heart Center, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois
| | - Ami B. Bhatt
- Adult Congenital Heart Disease Program, Massachusetts General Hospital, Boston, Massachusetts
| | | | - Robert Morrow
- Physician Organizations and Academic Relations, Children’s Health Children’s Medical Center, Dallas, Texas
| | - Michael D. Freed
- Department of Cardiology, Boston Children’s Hospital, Department of Pediatrics, Harvard Medical School, Boston, Massachusetts; and
| | - Robert H. Beekman
- Division of Pediatric Cardiology, Department of Pediatrics, University of Michigan School of Medicine, Ann Arbor, Michigan
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Morsheimer M, Brown Whitehorn TF, Heimall J, Sullivan KE. The immune deficiency of chromosome 22q11.2 deletion syndrome. Am J Med Genet A 2017. [PMID: 28627729 DOI: 10.1002/ajmg.a.38319] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The syndrome originally described by Dr. Angelo DiGeorge had immunodeficiency as a central component. When a 22q11.2 deletion was identified as the cause in the majority of patients with DiGeorge syndrome, the clinical features of 22q11.2 deletion syndrome became so expansive that the immunodeficiency became less prominent in our thinking about the syndrome. This review will focus on the immune system and the changes in our understanding over the past 50 years. Initially characterized as a pure defect in T cell development, we now appreciate that many of the clinical features related to the immunodeficiency are well downstream of the limitation imposed by a small thymus. Dysfunctional B cells presumed to be secondary to compromised T cell help, issues related to T cell exhaustion, and high rates of atopy and autoimmunity are aspects of management that require consideration for optimal clinical care and for designing a cogent monitoring approach. New data on atopy are presented to further demonstrate the association.
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Affiliation(s)
- Megan Morsheimer
- Nemours Children's Health System, DuPont Hospital for Children, Wilmington, Delaware
| | - Terri F Brown Whitehorn
- The Division of Allergy Immunology, The Children's Hospital of Philadelphia, Philadelphia, Philadelphia
| | - Jennifer Heimall
- The Division of Allergy Immunology, The Children's Hospital of Philadelphia, Philadelphia, Philadelphia
| | - Kathleen E Sullivan
- The Division of Allergy Immunology, The Children's Hospital of Philadelphia, Philadelphia, Philadelphia
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Suksawat Y, Sathienkijkanchai A, Veskitkul J, Jirapongsananuruk O, Visitsunthorn N, Vichyanond P, Pacharn P. Resolution of Primary Immune Defect in 22q11.2 Deletion Syndrome. J Clin Immunol 2017; 37:375-382. [DOI: 10.1007/s10875-017-0394-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 04/03/2017] [Indexed: 12/23/2022]
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Jyonouchi S, Jongco AM, Puck J, Sullivan KE. Immunodeficiencies Associated with Abnormal Newborn Screening for T Cell and B Cell Lymphopenia. J Clin Immunol 2017; 37:363-374. [PMID: 28353166 DOI: 10.1007/s10875-017-0388-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 03/20/2017] [Indexed: 10/19/2022]
Abstract
Newborn screening for SCID has revealed the association of low T cells with a number of unexpected syndromes associated with low T cells, some of which were not appreciated to have this feature. This review will discuss diagnostic approaches and the features of some of the syndromes likely to be encountered following newborn screening for immune deficiencies.
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Affiliation(s)
- Soma Jyonouchi
- Division of Allergy Immunology, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Artemio M Jongco
- Division of Allergy and Immunology, Cohen Children's Medical Center of New York, Hofstra Northwell School of Medicine, Hempstead, NY, USA
| | - Jennifer Puck
- Division of Allergy, Immunology and Blood and Marrow Transplantation, Department of Pediatrics, University of California San Francisco, and UCSF Benioff Children's Hospital, San Francisco, CA, USA
| | - Kathleen E Sullivan
- Division of Allergy Immunology, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.
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Vaccination of the Immunocompromised Patient. Infect Dis (Lond) 2017. [DOI: 10.1016/b978-0-7020-6285-8.00087-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Orange JS, Seeborg FO, Boyle M, Scalchunes C, Hernandez-Trujillo V. Family Physician Perspectives on Primary Immunodeficiency Diseases. Front Med (Lausanne) 2016; 3:12. [PMID: 27066486 PMCID: PMC4811961 DOI: 10.3389/fmed.2016.00012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 03/14/2016] [Indexed: 12/24/2022] Open
Abstract
Primary immunodeficiency diseases (PIDs) include over 250 diverse disorders. The current study assessed management of PID by family practice physicians. The American Academy of Allergy, Asthma, and Immunology Primary Immunodeficiency Committee and the Immune Deficiency Foundation conducted an incentivized mail survey of family practice physician members of the American Medical Association and the American Osteopathic Association in direct patient care. Responses were compared with subspecialist immunologist responses from a similar survey. Surveys were returned by 528 (of 4500 surveys mailed) family practice physicians, of whom 44% reported following ≥1 patient with PID. Selective immunoglobulin A deficiency (21%) and chronic granulomatous disease (11%) were most common and were followed by significantly more subspecialist immunologists (P < 0.05). Use of intravenously administered immunoglobulin and live viral vaccinations across PID was significantly different (P < 0.05). Few family practice physicians were aware of professional guidelines for diagnosis and management of PID (4 vs. 79% of subspecialist immunologists, P < 0.05). Family practice physicians will likely encounter patients with PID diagnoses during their career. Differences in how family practice physicians and subspecialist immunologists manage patients with PID underscore areas where improved educational and training initiatives may benefit patient care.
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Affiliation(s)
- Jordan S. Orange
- Section of Immunology, Allergy and Rheumatology, Department of Pediatrics, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Filiz O. Seeborg
- Section of Immunology, Allergy and Rheumatology, Department of Pediatrics, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX, USA
| | | | | | - Vivian Hernandez-Trujillo
- Department of Pediatrics, Division of Allergy and Immunology, Miami Children’s Hospital, Miami, FL, USA
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Abstract
22q11.2 deletion syndrome (22q11.2DS) is the most common chromosomal microdeletion disorder, estimated to result mainly from de novo non-homologous meiotic recombination events occurring in approximately 1 in every 1,000 fetuses. The first description in the English language of the constellation of findings now known to be due to this chromosomal difference was made in the 1960s in children with DiGeorge syndrome, who presented with the clinical triad of immunodeficiency, hypoparathyroidism and congenital heart disease. The syndrome is now known to have a heterogeneous presentation that includes multiple additional congenital anomalies and later-onset conditions, such as palatal, gastrointestinal and renal abnormalities, autoimmune disease, variable cognitive delays, behavioural phenotypes and psychiatric illness - all far extending the original description of DiGeorge syndrome. Management requires a multidisciplinary approach involving paediatrics, general medicine, surgery, psychiatry, psychology, interventional therapies (physical, occupational, speech, language and behavioural) and genetic counselling. Although common, lack of recognition of the condition and/or lack of familiarity with genetic testing methods, together with the wide variability of clinical presentation, delays diagnosis. Early diagnosis, preferably prenatally or neonatally, could improve outcomes, thus stressing the importance of universal screening. Equally important, 22q11.2DS has become a model for understanding rare and frequent congenital anomalies, medical conditions, psychiatric and developmental disorders, and may provide a platform to better understand these disorders while affording opportunities for translational strategies across the lifespan for both patients with 22q11.2DS and those with these associated features in the general population.
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Hernandez-Trujillo VP, Scalchunes C, Hernandez-Trujillo HS, Boyle J, Williams P, Boyle M, Orange JS. Primary Immunodeficiency Diseases: An Opportunity in Pediatrics for Improving Patient Outcomes. Clin Pediatr (Phila) 2015; 54:1265-75. [PMID: 25780256 DOI: 10.1177/0009922815574079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
OBJECTIVES Primary immunodeficiency diseases (PIDDs) are caused by inherent deficits in immune defenses that result in abnormal susceptibility to infection. In most cases, early and appropriate diagnosis can improve patient outcomes. The objective of this study was to evaluate understanding, recognition, and diagnosis of PIDD among pediatricians. METHODS A mail survey sent to a sample of pediatricians obtained from the American Medical Association and American Osteopathic Association. Results were compared with a similar survey of specialists who are members of the American Academy of Asthma, Allergy and Immunology. RESULTS More than a third (35%) of pediatricians were uncomfortable with the recognition and diagnosis of PIDD despite 95% having ordered screening tests or referring patients to specialists to be evaluated for PIDD, and 77% having followed at leastone patient with PIDD. In all, 84% of pediatricians were unaware that professional guidelines for PIDD exist. CONCLUSIONS Patients with PIDD would benefit from improved recognition of the diseases by pediatricians in order to facilitate earlier diagnosis and optimize ongoing therapy.
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Affiliation(s)
| | | | - Hillary S Hernandez-Trujillo
- Connecticut Asthma and Allergy Center, West Hartford, CT, USA University of Connecticut School of Medicine, Farmington, CT, USA Children's Hospital of Philadelphia, Philadelphia, PA, USA University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| | - John Boyle
- Immune Deficiency Foundation, Towson, MD, USA Abt SRBI Inc, Government Services Division, Silver Spring, MD, USA
| | - Paul Williams
- University of Washington School of Medicine, Seattle, WA, USA
| | | | - Jordan S Orange
- Texas Children's Hospital, Houston, TX, USA Baylor College of Medicine, Houston, TX, USA
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Bonilla FA, Khan DA, Ballas ZK, Chinen J, Frank MM, Hsu JT, Keller M, Kobrynski LJ, Komarow HD, Mazer B, Nelson RP, Orange JS, Routes JM, Shearer WT, Sorensen RU, Verbsky JW, Bernstein DI, Blessing-Moore J, Lang D, Nicklas RA, Oppenheimer J, Portnoy JM, Randolph CR, Schuller D, Spector SL, Tilles S, Wallace D. Practice parameter for the diagnosis and management of primary immunodeficiency. J Allergy Clin Immunol 2015; 136:1186-205.e1-78. [PMID: 26371839 DOI: 10.1016/j.jaci.2015.04.049] [Citation(s) in RCA: 394] [Impact Index Per Article: 43.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Revised: 04/18/2015] [Accepted: 04/23/2015] [Indexed: 02/07/2023]
Abstract
The American Academy of Allergy, Asthma & Immunology (AAAAI) and the American College of Allergy, Asthma & Immunology (ACAAI) have jointly accepted responsibility for establishing the "Practice parameter for the diagnosis and management of primary immunodeficiency." This is a complete and comprehensive document at the current time. The medical environment is a changing environment, and not all recommendations will be appropriate for all patients. Because this document incorporated the efforts of many participants, no single individual, including those who served on the Joint Task Force, is authorized to provide an official AAAAI or ACAAI interpretation of these practice parameters. Any request for information about or an interpretation of these practice parameters by the AAAAI or ACAAI should be directed to the Executive Offices of the AAAAI, the ACAAI, and the Joint Council of Allergy, Asthma & Immunology. These parameters are not designed for use by pharmaceutical companies in drug promotion.
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Principi N, Esposito S. Vaccine use in primary immunodeficiency disorders. Vaccine 2014; 32:3725-31. [DOI: 10.1016/j.vaccine.2014.05.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Revised: 04/17/2014] [Accepted: 05/01/2014] [Indexed: 12/12/2022]
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Hofstetter AM, Jakob K, Klein NP, Dekker CL, Edwards KM, Halsey NA, Baxter R, Williams SE, Graham PL, LaRussa P. Live vaccine use and safety in DiGeorge syndrome. Pediatrics 2014; 133:e946-54. [PMID: 24685951 DOI: 10.1542/peds.2013-0831] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE Live vaccines are generally contraindicated in patients with DiGeorge syndrome (DGS), a congenital disorder characterized by cellular immune deficiency. Vaccine utilization and safety in this population are not well described. This study examined vaccination patterns and adverse events following live immunization (AEFLI) in these individuals. METHODS A multicenter retrospective cohort study was conducted in subjects with DGS confirmed by fluorescence in situ hybridization assay (chromosome 22q11.2 microdeletion). Live vaccine-preventable illnesses, vaccination coverage and timeliness, and AEFLIs in the 56-day window after live vaccination were examined. Bivariate and multivariable analyses assessed the impact of demographics medical history, timing of diagnostic confirmation, and preceding immune function on vaccination patterns and AEFLIs. RESULTS Of 194 subjects, 77% and 75% received measles-mumps-rubella (MMR) and varicella vaccines, respectively; 58% completed recommended vaccinations by age 19 to 35 months. Adverse events occurred after 14% and 20% of MMR and varicella vaccine doses, respectively. Most events were minor, few were serious, and no deaths were reported in post-live vaccination windows. Although early diagnostic confirmation negatively affected live vaccination coverage and timeliness (P < .001), baseline CD4% did not differ between subjects who did or did not receive live vaccines by 12 to 18 months. Among varicella vaccine recipients, those with a subsequent adverse event had a lower preceding CD4% (24.8% ± 7.3%) than those without (35.5% ± 11.7%) (P < .05); no CD4% differences were observed with MMR vaccination. Fourteen unvaccinated subjects experienced live vaccine-preventable illnesses. CONCLUSIONS Live vaccines were frequently given and generally well-tolerated among patients with DGS with mild-to-moderate immunosuppression.
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Abstract
The development of vaccination is a major achievement in modern medicine. However, children treated with immunosuppression may not at all, or only in part, receive routine immunization due to uncertainty of its risks and effect. There is a substantial lack of pediatric studies concerning the efficacy and safety of vaccination in this patient group. Experience from similar adult groups and children with HIV infection can be used as a model for other disease categories. With increasing knowledge of the immunologic basis of vaccination and how immunosuppressive drugs interfere with the immune system, improved vaccines could be tailored, and adequate, individualized guidelines issued.
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Affiliation(s)
- Thomas H Casswall
- Paediatric Gastroenterology, Hepatology and Nutrition, Children's Hospital, Karolinska University Hospital, Sweden.
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Rubin LG, Levin MJ, Ljungman P, Davies EG, Avery R, Tomblyn M, Bousvaros A, Dhanireddy S, Sung L, Keyserling H, Kang I. 2013 IDSA clinical practice guideline for vaccination of the immunocompromised host. Clin Infect Dis 2013; 58:e44-100. [PMID: 24311479 DOI: 10.1093/cid/cit684] [Citation(s) in RCA: 518] [Impact Index Per Article: 47.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
An international panel of experts prepared an evidenced-based guideline for vaccination of immunocompromised adults and children. These guidelines are intended for use by primary care and subspecialty providers who care for immunocompromised patients. Evidence was often limited. Areas that warrant future investigation are highlighted.
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Affiliation(s)
- Lorry G Rubin
- Division of Pediatric Infectious Diseases, Steven and Alexandra Cohen Children's Medical Center of New York of the North Shore-LIJ Health System, New Hyde Park
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Maggadottir SM, Sullivan KE. The diverse clinical features of chromosome 22q11.2 deletion syndrome (DiGeorge syndrome). THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 2013; 1:589-94. [PMID: 24565705 DOI: 10.1016/j.jaip.2013.08.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 07/24/2013] [Accepted: 08/06/2013] [Indexed: 01/15/2023]
Abstract
A 2-year-old boy with chromosome 22q11.2 deletion syndrome was referred for recurrent sinopulmonary infections. He was diagnosed shortly after birth by a fluorescence in situ hybridization test that was performed due to interrupted aortic arch type B. He had no hypocalcemia, and his recovery from cardiac repair was uneventful. He had difficulty feeding and gained weight slowly, but, otherwise, there were no concerns during his first year of life. At 15 months of age, he began to develop significant otitis media and bronchitis. He was hospitalized once for pneumonia at 18 months of age and has never been off antibiotics for more than 1 week since then. He has not had any previous immunologic evaluation. Recurrent sinopulmonary infections in a child with chromosome 22q11.2 deletion syndrome can have the same etiologies as in any other child. Atopy, anatomic issues, cystic fibrosis, and new environmental exposures could be considered in this setting. Early childhood can be problematic for patients with chromosome 22q11.2 deletion syndrome due to unfavorable drainage of the middle ear and sinuses. Atopy occurs at a higher frequency in 22q11.2 deletion syndrome, and these children also have a higher rate of gastroesophageal reflux and aspiration than the general population. As would be appropriate for any child who presents with recurrent infections at 2 years of age, an immunologic evaluation should be performed. In this review, we will highlight recent findings and new data on the management of children and adults with chromosome 22q11.2 deletion syndrome.
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Affiliation(s)
| | - Kathleen E Sullivan
- Division of Allergy and Immunology, The Children's Hospital of Philadelphia, Philadelphia, Pa.
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Vaccination of immunocompromised hosts. Vaccines (Basel) 2013. [DOI: 10.1016/b978-1-4557-0090-5.00016-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] Open
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Cuellar-Rodriguez J, Freeman AF. Infections in the immunocompromised host. Clin Immunol 2013. [DOI: 10.1016/b978-0-7234-3691-1.00049-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Gennery AR. Immunological aspects of 22q11.2 deletion syndrome. Cell Mol Life Sci 2012; 69:17-27. [PMID: 21984609 PMCID: PMC11114664 DOI: 10.1007/s00018-011-0842-z] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 09/13/2011] [Accepted: 09/13/2011] [Indexed: 12/16/2022]
Abstract
Chromosome 22q11 deletion is the most common chromosomal deletion syndrome and is found in the majority of patients with DiGeorge syndrome and velo-cardio-facial syndrome. Patients with CHARGE syndrome may share similar features. Cardiac malformations, speech delay, and immunodeficiency are the most common manifestations. The immunological phenotype may vary widely between patients. Severe T lymphocyte immunodeficiency is rare-thymic transplantation offers a new approach to treatment, as well as insights into thymic physiology and central tolerance. Combined partial immunodeficiency is more common, leading to recurrent sinopulmonary infection in early childhood. Autoimmunity is an increasingly recognized complication. New insights into pathophysiology are reviewed.
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Affiliation(s)
- A R Gennery
- Institute of Cellular Medicine, Old Children's Outpatients, Royal Victoria Infirmary, Newcastle upon Tyne, NE1 4LP, UK.
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41
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Woodward CS. Keeping children with congenital heart disease healthy. J Pediatr Health Care 2011; 25:373-8. [PMID: 22018428 DOI: 10.1016/j.pedhc.2011.03.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2010] [Revised: 03/02/2011] [Accepted: 03/11/2011] [Indexed: 11/16/2022]
Abstract
Keeping children with congenital heart disease healthy is vital to their long-term survival and quality of life. Nurse practitioners are in an excellent position to keep these sometimes fragile children healthy before, between, and after their cardiac surgeries. Primary care visits should address developmental morbidity. Referral for in-depth evaluations and intervention should be initiated for children with hemodynamically significant heart disease. Infants may also experience poor feeding. Nutritional guidance may include fortifying formulas or enteral tube feedings. Attention to immunization status and prevention of winter illnesses and endocarditis may reduce complications in this high-risk group of children.
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Affiliation(s)
- Cathy S Woodward
- University of Texas Health Science Center–San Antonio, San Antonio, TX, USA.
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Abstract
Chromosome 22q11.2 microdeletion syndrome is the most common microdeletion syndrome in humans. It involves the loss of genetic material on the short arm of one of the chromosome 22 alleles. Until advanced testing was available, this syndrome was known by various names including DiGeorge syndrome and velo-cardio-facial syndrome. This syndrome has a varied presentation with significant abnormalities including congenital heart disease, hypocalcemia, immunologic deficiencies, learning disabilities, and behavioral problems. A multidisciplinary approach is required to diagnose and manage the varied manifestations.
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43
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Impfungen bei primären Immundefekten. Monatsschr Kinderheilkd 2011. [DOI: 10.1007/s00112-010-2334-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
The highly variable 22q11 deletion syndrome has been proposed for addition to newborn screening panels. A literature review investigated the incidence and prevalence, clinical features, and prognosis of 22q11 deletion syndrome and other issues related to newborn screening. Severe complications that could potentially be helped by screening include cardiac defects in 80% (with 20% having no outward signs to aid detection), hypocalcemia that can lead to seizures in 20% (though hypocalcemia is routinely investigated in sick newborns), and severe immune deficiency in <1% (which would be identified by some states' severe combined immunodeficiency screens). Other benefits that do not fit traditional goals of newborn screening include treatment for complications such as failure to thrive and developmental delay or preventing a "diagnostic odyssey." Although universal screening may prove the incidence to be >1:5000, undetected life-threatening effects occur in a minority of 22q11 deletion syndrome patients. Concerns include an untested screening technique, difficulty obtaining results in time for cardiac intervention, the chance of "vulnerable child syndrome" in mild cases, and possibly detecting congenital heart disease more efficiently by other means. Because addition of tests for highly variable conditions such as 22q11 deletion syndrome is likely to set a precedent for other syndromes, reevaluation of newborn screening criteria should be considered.
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McDonald-McGinn DM, Sullivan KE. Chromosome 22q11.2 deletion syndrome (DiGeorge syndrome/velocardiofacial syndrome). Medicine (Baltimore) 2011; 90:1-18. [PMID: 21200182 DOI: 10.1097/md.0b013e3182060469] [Citation(s) in RCA: 264] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Chromosome 22q11.2 deletion syndrome is a common syndrome also known as DiGeorge syndrome and velocardiofacial syndrome. It occurs in approximately 1:4000 births, and the incidence is increasing due to affected parents bearing their own affected children. The manifestations of this syndrome cross all medical specialties, and care of the children and adults can be complex. Many patients have a mild to moderate immune deficiency, and the majority of patients have a cardiac anomaly. Additional features include renal anomalies, eye anomalies, hypoparathyroidism, skeletal defects, and developmental delay. Each child's needs must be tailored to his or her specific medical problems, and as the child transitions to adulthood, additional issues will arise. A holistic approach, addressing medical and behavioral needs, can be very helpful.
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Zlamy M, Würzner R, Holzmann H, Brandstätter A, Jeller V, Zimmerhackl LB, Prelog M. Antibody dynamics after tick-borne encephalitis and measles–mumps–rubella vaccination in children post early thymectomy. Vaccine 2010; 28:8053-60. [DOI: 10.1016/j.vaccine.2010.10.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2010] [Revised: 09/30/2010] [Accepted: 10/01/2010] [Indexed: 12/15/2022]
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Al-Sukaiti N, Reid B, Lavi S, Al-Zaharani D, Atkinson A, Roifman CM, Grunebaum E. Safety and efficacy of measles, mumps, and rubella vaccine in patients with DiGeorge syndrome. J Allergy Clin Immunol 2010; 126:868-9. [DOI: 10.1016/j.jaci.2010.07.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2010] [Revised: 07/12/2010] [Accepted: 07/15/2010] [Indexed: 10/19/2022]
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Abstract
PURPOSE OF REVIEW Antibiotic prophylaxis is one of the mainstays of therapy of primary immunodeficiencies. We aim to summarize what is known about antibiotic prophylaxis for select primary immunodeficiencies. RECENT FINDINGS In recent years, there has been a push towards more evidence-based practices for antimicrobial prophylaxis for many conditions such as antifungal prophylaxis for extremely premature neonates and antibiotic prophylaxis for neutropenia associated with chemotherapy. However, there are remarkably few data regarding antibiotic prophylaxis in primary immunodeficiencies and regimens vary greatly between practices. SUMMARY Currently, antibiotic prophylaxis is guided by the common microbial pathogens seen in specific immunodeficiencies, and experience with other chronic illnesses such as cystic fibrosis, HIV, and immunosuppression from transplantation. Controlled studies are necessary to address the preferred antimicrobial and immunomodulator regimens for most of the primary immunodeficiencies.
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Vaudaux BP. Vaccination of the immunocompromised patient. Infect Dis (Lond) 2010. [DOI: 10.1016/b978-0-323-04579-7.00083-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Use of intravenous immunoglobulin and adjunctive therapies in the treatment of primary immunodeficiencies: A working group report of and study by the Primary Immunodeficiency Committee of the American Academy of Allergy Asthma and Immunology. Clin Immunol 2009; 135:255-63. [PMID: 19914873 DOI: 10.1016/j.clim.2009.10.003] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2009] [Revised: 10/07/2009] [Accepted: 10/14/2009] [Indexed: 11/22/2022]
Abstract
There are an expanding number of primary immunodeficiency diseases (PIDDs), each associated with unique diagnostic and therapeutic complexities. Limited data, however, exist supporting specific therapeutic interventions. Thus, a survey of PIDD management was administered to allergists/immunologists in the United States to identify current perspectives and practices. Among 405 respondents, the majority of key management practices identified were consistent with existing data and guidelines, including the provision of immunoglobulin therapy, immunoglobulin dosing and selective avoidance of live viral vaccines. Practices for which there are little specific data or evidence-based guidance were also examined, including evaluation of IgG trough levels for patients receiving immunoglobulin, use of prophylactic antibiotics and recommendations for complementary/alternative medicine. Here, variability applied to PIDD patients was identified. Differences between practitioners clinically focused upon PIDD and general allergists/immunologists were also identified. Thus, a need for expanded clinical research in PIDD to optimize management and potentially improve outcomes was defined.
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