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Khan U, Umer M, Muhammad A, Iltaf A, Nashwan AJ. Successful bone marrow transplantation in a patient with Omenn syndrome, a rare variant of severe combined immunodeficiency syndrome: A case report. Clin Case Rep 2024; 12:e9295. [PMID: 39119031 PMCID: PMC11306287 DOI: 10.1002/ccr3.9295] [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: 06/04/2024] [Revised: 07/03/2024] [Accepted: 07/13/2024] [Indexed: 08/10/2024] Open
Abstract
Key Clinical Message Bone marrow transplantation (BMT) saves lives in Omenn syndrome, a severe immunodeficiency disorder. Timely genetic diagnosis and matched donor BMT are crucial. Emphasis on newborn screening and multidisciplinary care improves outcomes for infants with inherited disorders. Prompt intervention and comprehensive management are vital for a successful transplant outcome. Abstract Omenn syndrome represents a severe variant of combined immunodeficiency characterized by disregulated immune responses and susceptibility to recurrent infections. We present the case of a 3-month-old female infant initially presenting with upper respiratory infection symptoms and a diffuse rash, unresponsive to local treatment. At 4 months of age, the patient underwent allogeneic bone marrow transplantation (BMT) utilizing stem cells from a fully matched sibling donor. Pre-transplant conditioning included antimicrobial prophylaxis and supportive therapies. Following BMT, the patient received immunosuppressive medications to prevent graft rejection and graft-versus-host disease. Clinical monitoring post-transplant showed timely neutrophil and platelet engraftment, with subsequent follow-up demonstrating stable clinical parameters and negative cytomegalovirus status. The case highlights the importance of timely diagnosis and treatment in managing severe immunodeficiency disorders, demonstrating the potential for successful outcomes with appropriate timely interventions. Regular monitoring and follow-up appointments were crucial in ensuring the success of the treatment. This case also emphasizes the significance of multidisciplinary care and genetic testing in identifying and managing rare immunodeficiency disorders. The successful outcome in this case provides hope for improved treatment options and better patient outcomes in the future.
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Affiliation(s)
- Ubaid Khan
- Department of MedicineUniversity of Maryland School of MedicineBaltimoreMarylandUSA
| | | | | | - Arej Iltaf
- Khyber Girls Medical CollegePeshawarPakistan
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Lev A, Somech R, Somekh I. Newborn screening for severe combined immunodeficiency and inborn errors of immunity. Curr Opin Pediatr 2023; 35:692-702. [PMID: 37707504 DOI: 10.1097/mop.0000000000001291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
PURPOSE OF REVIEW Severe combined immune deficiency (SCID) is the most devastating genetic disease of the immune system with an unfavorable outcome unless diagnosed early in life. Newborn screening (NBS) programs play a crucial role in facilitating early diagnoses and timely interventions for affected infants. RECENT FINDINGS SCID marked the pioneering inborn error of immunity (IEI) to undergo NBS, a milestone achieved 15 years ago through the enumeration of T-cell receptor excision circles (TRECs) extracted from Guthrie cards. This breakthrough has revolutionized our approach to SCID, enabling not only presymptomatic identification and prompt treatments (including hematopoietic stem cell transplantation), but also enhancing our comprehension of the global epidemiology of SCID. SUMMARY NBS is continuing to evolve with the advent of novel diagnostic technologies and treatments. Following the successful implementation of SCID-NBS programs, a call for the early identification of additional IEIs is the next step, encompassing a broader spectrum of IEIs, facilitating early diagnoses, and preventing morbidity and mortality.
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Affiliation(s)
- Atar Lev
- Pediatric Department A and the Immunology Service, Jeffrey Modell Foundation Center; Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Affiliated to the Faculty of Medicine, Tel Aviv University, Tel-Aviv, Israel
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Braams M, Pike-Overzet K, Staal FJT. The recombinase activating genes: architects of immune diversity during lymphocyte development. Front Immunol 2023; 14:1210818. [PMID: 37497222 PMCID: PMC10367010 DOI: 10.3389/fimmu.2023.1210818] [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: 04/23/2023] [Accepted: 06/19/2023] [Indexed: 07/28/2023] Open
Abstract
The mature lymphocyte population of a healthy individual has the remarkable ability to recognise an immense variety of antigens. Instead of encoding a unique gene for each potential antigen receptor, evolution has used gene rearrangements, also known as variable, diversity, and joining gene segment (V(D)J) recombination. This process is critical for lymphocyte development and relies on recombination-activating genes-1 (RAG1) and RAG2, here collectively referred to as RAG. RAG serves as powerful genome editing tools for lymphocytes and is strictly regulated to prevent dysregulation. However, in the case of dysregulation, RAG has been implicated in cases of cancer, autoimmunity and severe combined immunodeficiency (SCID). This review examines functional protein domains and motifs of RAG, describes advances in our understanding of the function and (dys)regulation of RAG, discuss new therapeutic options, such as gene therapy, for RAG deficiencies, and explore in vitro and in vivo methods for determining RAG activity and target specificity.
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Affiliation(s)
- Merijn Braams
- Department of Immunology, Leiden University Medical Centre, Leiden, Netherlands
| | - Karin Pike-Overzet
- Department of Immunology, Leiden University Medical Centre, Leiden, Netherlands
| | - Frank J. T. Staal
- Department of Immunology, Leiden University Medical Centre, Leiden, Netherlands
- Novo Nordisk Foundation Centre for Stem Cell Medicine (reNEW), Leiden University Medical Centre, Leiden, Netherlands
- Department of Paediatrics, Leiden University Medical Centre, Leiden, Netherlands
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Blom M, Bredius RGM, van der Burg M. Efficient screening strategies for severe combined immunodeficiencies in newborns. Expert Rev Mol Diagn 2023; 23:815-825. [PMID: 37599592 DOI: 10.1080/14737159.2023.2244879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 08/02/2023] [Indexed: 08/22/2023]
Abstract
INTRODUCTION Severe combined immunodeficiency (SCID) is one of the most severe forms of inborn errors of immunity (IEI), affecting both cellular and humoral immunity. Without curative treatment such as hematopoietic stem cell transplantation or gene therapy, affected infants die within the first year of life. Due to the severity of the disease, asymptomatic status early in life, and improved survival in the absence of pretransplant infections, SCID was considered a suitable candidate for newborn screening (NBS). AREAS COVERED Many countries have introduced SCID screening based on T-cell receptor excision circle (TREC) detection in their NBS programs. Screening an entire population is a radical departure from previous paradigms in the field of immunology. Efficient screening strategies are cost-efficient and balance high sensitivity while preventing high numbers of referrals. NBS for SCID is accompanied by (actionable) secondary findings, but many NBS programs have optimized their screening strategy by adjusting algorithms or including second-tier tests. Harmonization of screening terminology is of great importance for international shared learning. EXPERT OPINION The expansion of NBS is driven by the development of new test modalities and treatment options. In the near future, other techniques such as next-generation sequencing will pave the way for NBS of other IEI. Exciting times await for population-based screening programs.
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Affiliation(s)
- Maartje Blom
- Laboratory for Pediatric Immunology, Willem-Alexander Children's Hospital, Leiden University Medical Center, Leiden, The Netherlands
| | - Robbert G M Bredius
- Department of Pediatrics, Willem-Alexander Children's Hospital, Leiden University Medical Center, Leiden, The Netherlands
| | - Miriam van der Burg
- Laboratory for Pediatric Immunology, Willem-Alexander Children's Hospital, Leiden University Medical Center, Leiden, The Netherlands
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5
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Justiz-Vaillant AA, Gopaul D, Akpaka PE, Soodeen S, Arozarena Fundora R. Severe Combined Immunodeficiency-Classification, Microbiology Association and Treatment. Microorganisms 2023; 11:1589. [PMID: 37375091 DOI: 10.3390/microorganisms11061589] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/01/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
Severe combined immunodeficiency (SCID) is a primary inherited immunodeficiency disease that presents before the age of three months and can be fatal. It is usually due to opportunistic infections caused by bacteria, viruses, fungi, and protozoa resulting in a decrease in number and impairment in the function of T and B cells. Autosomal, X-linked, and sporadic forms exist. Evidence of recurrent opportunistic infections and lymphopenia very early in life should prompt immunological investigation and suspicion of this rare disorder. Adequate stem cell transplantation is the treatment of choice. This review aimed to provide a comprehensive approach to the microorganisms associated with severe combined immunodeficiency (SCID) and its management. We describe SCID as a syndrome and summarize the different microorganisms that affect children and how they can be investigated and treated.
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Affiliation(s)
- Angel A Justiz-Vaillant
- Department of Paraclinical Sciences, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, Trinidad and Tobago
| | - Darren Gopaul
- Department of Internal Medicine, Port of Spain General Hospital, The University of the West Indies, St. Augustine, Trinidad and Tobago
| | - Patrick Eberechi Akpaka
- Department of Paraclinical Sciences, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, Trinidad and Tobago
- Eric Williams Medical Sciences Complex, North Central Regional Health Authority, Champs Fleurs, Trinidad and Tobago
| | - Sachin Soodeen
- Department of Paraclinical Sciences, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, Trinidad and Tobago
| | - Rodolfo Arozarena Fundora
- Eric Williams Medical Sciences Complex, North Central Regional Health Authority, Champs Fleurs, Trinidad and Tobago
- Department of Clinical and Surgical Sciences, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, Trinidad and Tobago
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Mårtensson U, Nilsson S, Nolbris MJ, Wijk H, Mellgren K. Pain and discomfort in children with gastrostomy tubes - In the context of hematopoietic stem cell transplantation. J Pediatr Nurs 2023; 70:79-89. [PMID: 36848740 DOI: 10.1016/j.pedn.2023.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 01/05/2023] [Accepted: 02/11/2023] [Indexed: 02/27/2023]
Abstract
BACKGROUND In children with malignant and severe non-malignant disorders undergoing hematopoietic stem cell transplantation (HSCT), treatment related pain and discomfort are common. Food consumption may become troublesome, making the use of a gastrostomy tube (G-tube) necessary and resulting in complications, why the purpose was to explore pain and discomfort during the transplantation and post-transplantation time. METHODS This was a mixed methods study where data were collected along the child's total health-care process between 2018 and 2021. Questions with fixed answer options were used, simultaneously, semi-structured interviews were performed. In total, sixteen families participated. Descriptive statistics and content analysis were used to describe analysed data. FINDINGS Intense pain was common during the post-surgery phase, especially in conjunction with G-tube care, which is why the children needed support to manage the situation. After the post-surgery phase when the skin has healed, most of the children experienced minor to no pain or bodily discomfort, why the G-tube became a well-functioning and supportive tool in daily life. CONCLUSIONS This study describes variations in and experiences of pain and bodily discomfort in conjunction with G-tube insertion in a unique sample of children who had undergone HSCT. In conclusion, the children's comfort in daily life after the post-surgery phase seemed to be only marginally affected by G-tube insertion. Children with severe non-malignant disorders seemed to experience a higher frequency and intensity of pain and bodily discomfort due to the G-tube than children with malignant disorders. PRACTICE IMPLICATIONS The paediatric care team need competence in assessing G-tube related pain and awareness that experiences may differ depending on the child's disorder.
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Affiliation(s)
- Ulrika Mårtensson
- Institute of Health and Care Sciences, Sahlgrenska Academy, University of Gothenburg, SE- 405 30 Gothenburg, Sweden.
| | - Stefan Nilsson
- Institute of Health and Care Sciences, Sahlgrenska Academy, University of Gothenburg, SE- 405 30 Gothenburg, Sweden; Department of Pediatrics, The Queen Silvia Children's Hospital, Gothenburg, Sweden.
| | - Margaretha Jenholt Nolbris
- Institute of Health and Care Sciences, Sahlgrenska Academy, University of Gothenburg, SE- 405 30 Gothenburg, Sweden; Department of Pediatrics, The Queen Silvia Children's Hospital, Gothenburg, Sweden.
| | - Helle Wijk
- Institute of Health and Care Sciences, Sahlgrenska Academy, University of Gothenburg, SE- 405 30 Gothenburg, Sweden; Chalmers Technology University, Centre for Health Care Architecture, SE- 405 30 Gothenburg, Sweden.
| | - Karin Mellgren
- Department of Paediatrics, Institute for Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, SE- 416 85 Gothenburg, Sweden.
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Tung YL, Wang YL, Chang TY, Chiu CC, Wen YC, Jaing TH. Allogeneic stem cell transplantation without preconditioning in a child with therapy-related myelodysplastic syndrome: A case report. Medicine (Baltimore) 2023; 102:e32770. [PMID: 36820588 PMCID: PMC9907963 DOI: 10.1097/md.0000000000032770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
Abstract
RATIONALE Infants with mixed-lineage leukemia (MLL)-rearranged leukemia are usually refractory to standard induction therapy and are not immediate candidates for allogeneic hematopoietic stem cell transplantation (allo-HSCT). Chromosome 11q23 translocations, resulting in MLL rearrangement, have been well characterized in infant acute lymphoblastic leukemia (ALL). While t(4;11) ALL continues to have carry a bleak prognosis, patients with therapy-related myelodysplastic syndrome (t-MDS) have a shorter median overall survival than those compared with de novo MDS. PATIENT CONCERNS We describe a child with t-MDS who evolved from MLL-rearranged ALL and was successfully treated with HSCT without toxic preconditioning. DIAGNOSES MDS diagnosis was based on morphological characteristics of bone marrow dysplasia in patients with clinical manifestations evidence of hematopoiesis impairments by different combinations of anemia, leukopenia, neutropenia, and thrombocytopenia. INTERVENTIONS Although the best donor for allo-HSCT is generally considered an human leukocyte antigen-matched sibling, only ~ 30% of patients have a suitable sibling. HSCT from an unrelated donor is a suitable option for patients with t-MDS who do not have matched sibling donors. OUTCOMES Allo-HSCT without recipient preconditioning could be a promising treatment option for t-MDS, especially for patients with recurrent or persistent infections. LESSONS Cytogenetics, prognosis, and treatment of t-MDS are briefly discussed. Preconditioning before allo-HSCT seriously damages immune function. This work reviews our experience with a patient with t-MDS following ALL complicated by recurrent infections, and highlights our choice to omit preconditioning from allo-HSCT.
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Affiliation(s)
- Yi-Ling Tung
- Department of Pediatrics, Chang Gung Children’s Hospital, Chang Gung University, Taoyuan, Taiwan
| | - Yi-Lun Wang
- Department of Pediatrics, Chang Gung Children’s Hospital, Chang Gung University, Taoyuan, Taiwan
| | - Tsung-Yen Chang
- Divisions of Hematology and Oncology, Chang Gung Children’s Hospital, Chang Gung University, Taoyuan, Taiwan
| | - Chia-Chi Chiu
- Department of Nursing, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan
| | - Yu-Chuan Wen
- Department of Nursing, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan
| | - Tang-Her Jaing
- Divisions of Hematology and Oncology, Chang Gung Children’s Hospital, Chang Gung University, Taoyuan, Taiwan
- * Correspondence: Tang-Her Jaing, Division of Hematology and Oncology, Department of Pediatrics, Chang Gung Children’s Hospital, Chang Gung University, 5 Fu-Shin Street, Kwei-Shan, Taoyuan 33305, Taiwan (e-mail: )
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Impact of Genetic Diagnosis on the Outcome of Hematopoietic Stem Cell Transplant in Primary Immunodeficiency Disorders. J Clin Immunol 2023; 43:636-646. [PMID: 36495401 PMCID: PMC9958161 DOI: 10.1007/s10875-022-01403-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 10/31/2022] [Indexed: 12/14/2022]
Abstract
To evaluate the relationship between knowledge of genetic diagnosis before HSCT and outcome, we reviewed all HSCTs for primary immune deficiencies (PID) performed at UCSF from 2007 through 2018. SCID, a distinct entity identified since 2010 in California by newborn screening and treated early, was considered separately. The underlying genetic condition was known at the time of HSCT in 85% of cases. Graft failure was less frequent in patients with a genetic diagnosis (19% with a genetic diagnosis versus 47% without, p = 0.020). Furthermore, event-free survival and overall survival (OS) at 5 years were better for those with a genetic diagnosis (78% with versus 44% without, p = 0.006; and 93% versus 60% without, p = 0.0002, respectively). OS at 5 years was superior for known-genotype patients with both SCID (p = 0.010) and non-SCID PID (p = 0.010). There was no difference in OS between HSCT done in 2007-2010 compared to more recently (p = 0.19). These data suggest that outcomes of HSCT for PID with known genotype may reflect specific experience and literature, or that a substantial proportion of patients with PID of undetermined genotype may have had underlying conditions for which HSCT may carry greater risk. The higher rate of graft failure in PID with unknown genotype may be in part explained by insufficient conditioning, which in turn could be dictated by compromised organ function in patients undergoing HSCT late in the course. Widespread availability of PID gene sequencing as standard care can provide genetic diagnoses for most patients with PID prior to HSCT, permitting optimization of transplant approach.
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Howley E, Davies EG, Kreins AY. Congenital Athymia: Unmet Needs and Practical Guidance. Ther Clin Risk Manag 2023; 19:239-254. [PMID: 36935770 PMCID: PMC10022451 DOI: 10.2147/tcrm.s379673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 03/04/2023] [Indexed: 03/14/2023] Open
Abstract
Inborn errors of thymic stromal cell development and function which are associated with congenital athymia result in life-threatening immunodeficiency with susceptibility to infections and autoimmunity. Athymic patients can be treated by thymus transplantation using cultured donor thymus tissue. Outcomes in patients treated at Duke University Medical Center and Great Ormond Street Hospital (GOSH) over the past three decades have shown that sufficient T-cell immunity can be recovered to clear and prevent infections, but post-treatment autoimmune manifestations are relatively common. Whilst thymus transplantation offers the chance of long-term survival, significant challenges remain to optimise the outcomes for the patients. In this review, we will discuss unmet needs and offer practical guidance based on the experience of the European Thymus Transplantation programme at GOSH. Newborn screening (NBS) for severe combined immunodeficiency (SCID) and routine use of next-generation sequencing (NGS) platforms have improved early recognition of congenital athymia and increasing numbers of patients are being referred for thymus transplantation. Nevertheless, there remain delays in diagnosis, in particular when the cause is genetically undefined, and treatment accessibility needs to be improved. The majority of athymic patients have syndromic features with acute and chronic complex health issues, requiring life-long multidisciplinary and multicentre collaboration to optimise their medical and social care. Comprehensive follow up after thymus transplantation including monitoring of immunological results, management of co-morbidities and patient and family quality-of-life experience, is vital to understanding long-term outcomes for this rare cohort of patients. Alongside translational research into improving strategies for thymus replacement therapy, patient-focused clinical research will facilitate the design of strategies to improve the overall care for athymic patients.
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Affiliation(s)
- Evey Howley
- Department of Immunology and Gene Therapy, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - E Graham Davies
- Department of Immunology and Gene Therapy, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Alexandra Y Kreins
- Department of Immunology and Gene Therapy, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
- Infection, Immunity and Inflammation Research & Teaching Department, University College London, London, UK
- Correspondence: Alexandra Y Kreins, Email
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10
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Pinto MV, Neves JF. Precision medicine: The use of tailored therapy in primary immunodeficiencies. Front Immunol 2022; 13:1029560. [PMID: 36569887 PMCID: PMC9773086 DOI: 10.3389/fimmu.2022.1029560] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 11/17/2022] [Indexed: 12/13/2022] Open
Abstract
Primary immunodeficiencies (PID) are rare, complex diseases that can be characterised by a spectrum of phenotypes, from increased susceptibility to infections to autoimmunity, allergy, auto-inflammatory diseases and predisposition to malignancy. With the introduction of genetic testing in these patients and wider use of next-Generation sequencing techniques, a higher number of pathogenic genetic variants and conditions have been identified, allowing the development of new, targeted treatments in PID. The concept of precision medicine, that aims to tailor the medical interventions to each patient, allows to perform more precise diagnosis and more importantly the use of treatments directed to a specific defect, with the objective to cure or achieve long-term remission, minimising the number and type of side effects. This approach takes particular importance in PID, considering the nature of causative defects, disease severity, short- and long-term complications of disease but also of the available treatments, with impact in life-expectancy and quality of life. In this review we revisit how this approach can or is already being implemented in PID and provide a summary of the most relevant treatments applied to specific diseases.
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Affiliation(s)
- Marta Valente Pinto
- Primary Immunodeficiencies Unit, Hospital Dona Estefânia, CHULC-EPE, Lisbon, Portugal,Centro de Investigação Egas Moniz (CiiEM), Instituto Universitário Egas Moniz (IUEM), Quinta da Granja, Monte da Caparica, Caparica, Portugal
| | - João Farela Neves
- Primary Immunodeficiencies Unit, Hospital Dona Estefânia, CHULC-EPE, Lisbon, Portugal,CHRC, Comprehensive Health Research Centre, Nova Medical School, Lisbon, Portugal,*Correspondence: João Farela Neves,
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Chen X, Wang D, Zheng F, Zhai X, Xu H, Li Z. Population pharmacokinetics and initial dose optimization of tacrolimus in children with severe combined immunodeficiency undergoing hematopoietic stem cell transplantation. Front Pharmacol 2022; 13:869939. [PMID: 35935844 PMCID: PMC9354257 DOI: 10.3389/fphar.2022.869939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 07/04/2022] [Indexed: 11/22/2022] Open
Abstract
The present study aimed to explore the population pharmacokinetics and initial dose optimization of tacrolimus in children with severe combined immunodeficiency (SCID) undergoing hematopoietic stem cell transplantation (HSCT). Children with SCID undergoing HSCT treated with tacrolimus were enrolled for analysis. Population pharmacokinetics of tacrolimus was built up by a nonlinear mixed-effects model (NONMEM), and initial dose optimization of tacrolimus was simulated with the Monte Carlo method in children weighing <20 kg at different doses. A total of 18 children with SCID undergoing HSCT were included for analysis, with 130 tacrolimus concentrations. Body weight was included as a covariable in the final model. Tacrolimus CL/F was 0.36–0.26 L/h/kg from body weights of 5–20 kg. Meanwhile, we simulated the tacrolimus concentrations using different body weights (5–20 kg) and different dose regimens (0.1–0.8 mg/kg/day). Finally, the initial dose regimen of 0.6 mg/kg/day tacrolimus was recommended for children with SCID undergoing HSCT whose body weights were 5–20 kg. It was the first time to establish tacrolimus population pharmacokinetics in children with SCID undergoing HSCT; in addition, the initial dose optimization of tacrolimus was recommended.
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Affiliation(s)
- Xiao Chen
- Department of Pharmacy, Children’s Hospital of Fudan University, Shanghai, China
| | - Dongdong Wang
- Department of Pharmacy, Children’s Hospital of Fudan University, Shanghai, China
| | - Feng Zheng
- Department of Pharmacy, Children’s Hospital of Fudan University, Shanghai, China
| | - Xiaowen Zhai
- Department of Hematology and Oncology, Children’s Hospital of Fudan University, Shanghai, China
- *Correspondence: Xiaowen Zhai, ; Hong Xu, ; Zhiping Li,
| | - Hong Xu
- Department of Nephrology, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
- *Correspondence: Xiaowen Zhai, ; Hong Xu, ; Zhiping Li,
| | - Zhiping Li
- Department of Pharmacy, Children’s Hospital of Fudan University, Shanghai, China
- *Correspondence: Xiaowen Zhai, ; Hong Xu, ; Zhiping Li,
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12
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Ren J, Peng C, Zhou F, Li Y, Keqie Y, Chen H, Zhu H, Chen X, Liu S. Case Report: Preimplantation Genetic Testing for X-Linked Severe Combined Immune Deficiency Caused by IL2RG Gene Variant. Front Genet 2022; 13:926060. [PMID: 35719382 PMCID: PMC9198258 DOI: 10.3389/fgene.2022.926060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 05/16/2022] [Indexed: 11/13/2022] Open
Abstract
Preimplantation genetic testing (PGT) has been increasingly used to prevent rare inherited diseases. In this study, we report a case where PGT was used to prevent the transmission of disease-caused variant in a SCID-X1 (OMIM:300400) family. SCID-X1 is an X-linked recessive inherited disease whose major clinical manifestation of immune deficiency is the significant reduction in the number of T-cells and natural killer cells. This family gave birth to a boy who was a hemizygous proband whose IL2RG gene was mutated (c.315T > A, p(Tyr105*), NM_000206.3, CM962677). In this case, Sanger sequencing for mutated allele and linkage analysis based on single-nucleotide polymorphism (SNP) haplotype via next-generation sequencing were performed simultaneously. After PGT for monogenic disorder, we detected the aneuploidy and copy number variation (CNV) for normal and female carrier embryos. Four embryos (E02, E09, E10, and E11) were confirmed without CNVs and inherited variants at the IL2RG gene. Embryo E02 (ranking 4BB) has been transferred after considering the embryo growth rate, morphology, and PGT results. Prenatal genetic diagnosis was used to detect amniotic fluid cells, showing that this fetus did not carry the variant of the IL2RG gene (c.315T > A). Ultimately, a healthy girl who had not carried disease-causing variants of SCID-X1 confirmed by prenatal diagnosis was born, further verifying our successful application of PGT in preventing mutated allele transmission for this SCID family.
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Affiliation(s)
- Jun Ren
- Department of Medical Genetics, Center of Prenatal Diagnosis, West China Second University Hospital, Sichuan University, Chengdu, China.,Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
| | - Cuiting Peng
- Department of Medical Genetics, Center of Prenatal Diagnosis, West China Second University Hospital, Sichuan University, Chengdu, China.,Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
| | - Fan Zhou
- Department of Medical Genetics, Center of Prenatal Diagnosis, West China Second University Hospital, Sichuan University, Chengdu, China.,Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
| | - Yutong Li
- Department of Medical Genetics, Center of Prenatal Diagnosis, West China Second University Hospital, Sichuan University, Chengdu, China.,Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
| | - Yuezhi Keqie
- Department of Medical Genetics, Center of Prenatal Diagnosis, West China Second University Hospital, Sichuan University, Chengdu, China.,Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
| | - Han Chen
- Department of Medical Genetics, Center of Prenatal Diagnosis, West China Second University Hospital, Sichuan University, Chengdu, China.,Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
| | - Hongmei Zhu
- Department of Medical Genetics, Center of Prenatal Diagnosis, West China Second University Hospital, Sichuan University, Chengdu, China.,Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
| | - Xinlian Chen
- Department of Medical Genetics, Center of Prenatal Diagnosis, West China Second University Hospital, Sichuan University, Chengdu, China.,Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
| | - Shanling Liu
- Department of Medical Genetics, Center of Prenatal Diagnosis, West China Second University Hospital, Sichuan University, Chengdu, China.,Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
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13
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Jamee M, Khakbazan Fard N, Fallah S, Golchehre Z, Fallahi M, Shamsian BS, Sharafian S, Chavoshzadeh Z. Cernunnos defect in an Iranian patient with T - B + NK + severe combined immunodeficiency: A case report and review of the literature. Mol Genet Genomic Med 2022; 10:e1990. [PMID: 35656589 PMCID: PMC9356558 DOI: 10.1002/mgg3.1990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/09/2022] [Accepted: 05/12/2022] [Indexed: 12/02/2022] Open
Abstract
Background Defective Cernunnos gene in nonhomologous end‐joining (NHEJ) pathway of the DNA repair is responsible for radiosensitive severe combined immunodeficiency (SCID). Herein, presented a new patient with Cernunnos deficiency and summarized the clinical, immunological, and molecular features of reported patients in the literature. Case The patient was a 6‐month‐old female born to consanguineous parents. She presented with long‐lasting fever, diarrhea, poor feeding, and restlessness. She had suffered from recurrent fever of unknown origin and multiple episodes of oral candidiasis. In the physical examination, microcephaly, failure to thrive, oral candidiasis, pustular rash on fingers, and perianal ulcers, but no dysmorphic feature were observed. The immunologic workup revealed lymphopenia, neutropenia, normocytic anemia, low T‐ but normal B‐ and natural killer (NK)‐ cells, low immunoglobulin (Ig)G, and normal IgA, IgM, and IgE. The T‐cell receptor excision circle (TREC) was low and the lymphocyte transformation test (LTT) was abnormal to mitogens and antigens. She was diagnosed with T− B+ NK+ SCID and improved by intravenous immunoglobulin along with antimicrobials. A homozygous splice site variant, c.390 + 1G > T, at the intron 3 of the NHEJ1, was identified and the diagnosis of Cernunnos deficiency was established. However, while a candidate for hematopoietic stem cell transplantation, she developed sepsis and died at 11 months of age. Conclusions Cernunnos deficiency should be considered as a differential diagnosis in patients with microcephaly, growth retardation, recurrent infections, T‐cell defects, and hypogammaglobulinemia. The normal B‐cell level in the index patient is an unexpected finding in Cernunnos deficiency which requires further evaluation.
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Affiliation(s)
- Mahnaz Jamee
- Pediatric Nephrology Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Immunology and Allergy Department, Mofid Children's Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nasrin Khakbazan Fard
- Immunology and Allergy Department, Mofid Children's Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shahrzad Fallah
- Immunology and Allergy Department, Mofid Children's Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zahra Golchehre
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mazdak Fallahi
- Immunology and Allergy Department, Mofid Children's Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Bibi Shahin Shamsian
- Pediatric Congenital Hematologic Disorders Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Samin Sharafian
- Immunology and Allergy Department, Mofid Children's Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zahra Chavoshzadeh
- Immunology and Allergy Department, Mofid Children's Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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14
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Kricke S, Rao K, Adams S. The significance of mixed chimaerism and cell lineage chimaerism monitoring in paediatric patients post haematopoietic stem cell transplant. Br J Haematol 2022; 198:625-640. [PMID: 35421255 DOI: 10.1111/bjh.18190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/23/2022] [Accepted: 03/25/2022] [Indexed: 11/28/2022]
Abstract
Haematopoietic stem cell transplants (HSCTs) are carried out across the world to treat haematological and immunological diseases which would otherwise prove fatal. Certain diseases are predominantly encountered in paediatric patients, such severe primary immunodeficiencies (PID) and diseases of inborn errors of metabolism (IEM). Chimaerism testing for these disorders has different considerations compared to adult diseases. This review focuses on the importance of cell-lineage-specific chimaerism testing and examines the appropriate cell populations to be assessed in individual paediatric patient groups. By analysing disease-associated subpopulations, abnormalities are identified significantly earlier than in whole samples and targeted clinical decisions can be made. Chimaerism methods have evolved over time and lead to an ever-increasing level of sensitivity and biomarker arrays to distinguish between recipient and donor cells. Short tandem repeat (STR) is still the gold standard for routine chimaerism assessment, and hypersensitive methods such as quantitative and digital polymerase chain reaction (PCR) are leading the forefront of microchimaerism testing. The rise of molecular methods operating with minute DNA amounts has been hugely beneficial to chimaerism testing of paediatric samples. As HSCTs are becoming increasingly personalised and risk-adjusted towards a child's individual needs, chimaerism testing needs to adapt alongside these medical advances ensuring the best possible care.
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Affiliation(s)
- Susanne Kricke
- Specialist Integrated Haematology and Malignancy Diagnostic Service, Department of Haematology, Great Ormond Street Hospital for Children, London, UK
| | - Kanchan Rao
- Department of Blood and Marrow Transplantation, Great Ormond Street Hospital for Children, London, UK
| | - Stuart Adams
- Specialist Integrated Haematology and Malignancy Diagnostic Service, Department of Haematology, Great Ormond Street Hospital for Children, London, UK
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15
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Lankester AC, Neven B, Mahlaoui N, von Asmuth EGJ, Courteille V, Alligon M, Albert MH, Serra IB, Bader P, Balashov D, Beier R, Bertrand Y, Blanche S, Bordon V, Bredius RG, Cant A, Cavazzana M, Diaz-de-Heredia C, Dogu F, Ehlert K, Entz-Werle N, Fasth A, Ferrua F, Ferster A, Formankova R, Friedrich W, Gonzalez-Vicent M, Gozdzik J, Güngör T, Hoenig M, Ikinciogullari A, Kalwak K, Kansoy S, Kupesiz A, Lanfranchi A, Lindemans CA, Meisel R, Michel G, Miranda NAA, Moraleda J, Moshous D, Pichler H, Rao K, Sedlacek P, Slatter M, Soncini E, Speckmann C, Sundin M, Toren A, Vettenranta K, Worth A, Yeşilipek MA, Zecca M, Porta F, Schulz A, Veys P, Fischer A, Gennery AR. Hematopoietic cell transplantation in severe combined immunodeficiency: The SCETIDE 2006-2014 European cohort. J Allergy Clin Immunol 2021; 149:1744-1754.e8. [PMID: 34718043 DOI: 10.1016/j.jaci.2021.10.017] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 10/14/2021] [Accepted: 10/20/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Hematopoietic stem cell transplantation (HSCT) represents a curative treatment for patients with severe combined immunodeficiency (SCID), a group of monogenic immune disorders with an otherwise fatal outcome. OBJECTIVE We performed a comprehensive multicenter analysis of genotype-specific HSCT outcome, including detailed analysis of immune reconstitution (IR) and the predictive value for clinical outcome. METHODS HSCT outcome was studied in 338 patients with genetically confirmed SCID who underwent transplantation in 2006-2014 and who were registered in the SCETIDE registry. In a representative subgroup of 152 patients, data on IR and long-term clinical outcome were analyzed. RESULTS Two-year OS was similar with matched family and unrelated donors and better than mismatched donor HSCT (P < .001). The 2-year event-free survival (EFS) was similar in matched and mismatched unrelated donor and less favorable in mismatched related donor (MMRD) HSCT (P < .001). Genetic subgroups did not differ in 2-year OS (P = .1) and EFS (P = .073). In multivariate analysis, pretransplantation infections and use of MMRDs were associated with less favorable OS and EFS. With a median follow-up of 6.2 years (range, 2.0-11.8 years), 73 of 152 patients in the IR cohort were alive and well without Ig dependency. IL-2 receptor gamma chain/Janus kinase 3/IL-7 receptor-deficient SCID, myeloablative conditioning, matched donor HSCT, and naive CD4 T lymphocytes >0.5 × 10e3/μL at +1 year were identified as independent predictors of favorable clinical and immunologic outcome. CONCLUSION Recent advances in HSCT in SCID patients have resulted in improved OS and EFS in all genotypes and donor types. To achieve a favorable long-term outcome, treatment strategies should aim for optimal naive CD4 T lymphocyte regeneration.
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Affiliation(s)
- Arjan C Lankester
- Pediatric Stem Cell Transplantation Program and Laboratory for Pediatric Immunology, Willem-Alexander Children's Hospital, Leiden University Medical Center, Leiden, The Netherlands.
| | - Benedicte Neven
- Unité d'Immuno-hematologie et Rhumatologie Pédiatrique, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France; Université de Paris, Paris, France; Institut Imagine, INSERM UMR1163, Laboratory of Immunogenetics of Pediatric Autoimmune Diseases, Paris, France
| | - Nizar Mahlaoui
- French National Reference Center for Primary Immunodeficiencies (CEREDIH) and European Registry for Stem Cell Transplantation for Primary Immunodeficiencies (SCETIDE), Hôpital Universitaire Necker-Enfants malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Erik G J von Asmuth
- Pediatric Stem Cell Transplantation Program and Laboratory for Pediatric Immunology, Willem-Alexander Children's Hospital, Leiden University Medical Center, Leiden, The Netherlands
| | - Virginie Courteille
- French National Reference Center for Primary Immunodeficiencies (CEREDIH) and European Registry for Stem Cell Transplantation for Primary Immunodeficiencies (SCETIDE), Hôpital Universitaire Necker-Enfants malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Mikael Alligon
- French National Reference Center for Primary Immunodeficiencies (CEREDIH) and European Registry for Stem Cell Transplantation for Primary Immunodeficiencies (SCETIDE), Hôpital Universitaire Necker-Enfants malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Michael H Albert
- Dr von Haunersches University Children's Hospital, Munich, Germany
| | - Isabelle Badell Serra
- Hospital Clínic, Sant Creu i Sant Pau Hospital, Bone Marrow Transplantation Unit, Barcelona, Spain
| | - Peter Bader
- Department for Children and Adolescents Medicine, Division for Stem Cell Transplantation and Immunology, University Hospital Frankfurt, Frankfurt, Germany
| | - Dmitry Balashov
- Department for Hematopoietic Stem Cell Transplantation, Dmitriy Rogachev National Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Rita Beier
- Klinik für Pädiatrische Hämatologie und Onkologie, Hannover Medical School, Hannover, Germany
| | - Yves Bertrand
- Institut d'Hématologie et d'Oncologie Pédiatrique, Hospices Civils de Lyon and Université Claude Bernard Lyon 1, Lyon, France
| | - Stephane Blanche
- Unité d'Immuno-hematologie et Rhumatologie Pédiatrique, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Victoria Bordon
- Department of Pediatric Hemato-oncology and Stem Cell Transplant, Ghent University Hospital, Ghent, Belgium
| | - Robbert G Bredius
- Pediatric Stem Cell Transplantation Program and Laboratory for Pediatric Immunology, Willem-Alexander Children's Hospital, Leiden University Medical Center, Leiden, The Netherlands
| | - Andrew Cant
- Translational and Clinical Research Institute, Newcastle University, and the Paediatric Haematopoietic Stem Cell Transplant Unit, Great North Children's Hospital, Newcastle upon Tyne, United Kingdom
| | - Marina Cavazzana
- Université de Paris, Paris, France; Paris Biotherapy Department, Necker Children's Hospital Assistance, Paris, France; Biotherapy Clinical Investigation Center, Assistance Publique Hopitaux de Paris, INSERM, Paris, France; Laboratory of Genomic Dynamics in the Immune System, Institut Imagine, INSERM UMR1163, Paris, France
| | - Cristina Diaz-de-Heredia
- Department of Pediatric Oncology and Hematology, and Hematopoietic Stem Cell Transplantation, Hospital Universitario Vall d'Hebron, Barcelona, Spain
| | - Figen Dogu
- Department of PIA and the BMT Unit, Ankara University, Ankara, Turkey
| | - Karoline Ehlert
- Department of Pediatric Hematology and Oncology, Universitätsklinikum Münster, Münster, Germany; Department of Pediatric Hematology and Oncology, University of Greifswald, Greifswald, Germany
| | - Natacha Entz-Werle
- Pediatric Onco-hematology Department-Pediatrics III, University Hospital of Strasbourg, Strasbourg, France
| | - Anders Fasth
- Department of Pediatrics, Institute of Clinical Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Francesca Ferrua
- Pediatric Immunohematology and Bone Marrow Transplantation Unit and the San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Alina Ferster
- Department of Hemato-oncology, Hôpital Universitaire des Enfants Reine Fabiola, Brussels, Belgium
| | - Renata Formankova
- Department of Pediatric Hematology and Oncology, Teaching Hospital Motol, 2nd Medical School, Charles University Motol, Prague, Czech Republic
| | - Wilhelm Friedrich
- Department of Pediatrics, University Medical Center Ulm, Ulm, Germany
| | - Marta Gonzalez-Vicent
- Hematopoietic Stem Cell Transplantation and Cellular Therapy Unit, Hospital Infantil Universitario "Niño Jesus," Madrid, Spain
| | - Jolanta Gozdzik
- Department of Clinical Immunology and Transplantation, Jagiellonian University Medical College, Krakow, Poland
| | - Tayfun Güngör
- Department of Hematology, Oncology, Immunology, Gene Therapy and Stem Cell Transplantation, and Children's Research Center (CRC), University Children's Hospital, Zurich, Switzerland
| | - Manfred Hoenig
- Department of Pediatrics, University Medical Center Ulm, Ulm, Germany
| | | | - Krzysztof Kalwak
- Department of Pediatric Hematology, Oncology, and BMT, Wroclaw Medical University, Wroclaw, Poland
| | - Savas Kansoy
- Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey
| | - Alphan Kupesiz
- Department of Pediatrics, Hematology, and Oncology, Akdeniz University School of Medicine, Antalya, Turkey
| | - Arnalda Lanfranchi
- Diagnostic Department, Stem Cell Laboratory, Section of Hematology and Blood Coagulation, Clinical Chemistry Laboratory, ASST Spedali Civili, Brescia, Italy
| | - Caroline A Lindemans
- Department of Stem Cell Transplantation, Princess Maxima Center for Pediatric Oncology, Utrecht, The Netherlands; Department of Pediatrics, University Medical Center Utrecht, University of Utrecht, Utrecht, The Netherlands
| | - Roland Meisel
- Department of Pediatric Oncology, Hematology, and Clinical Immunology, Medical Faculty, Division of Pediatric Stem Cell Therapy, Heinrich-Heine-University, Düsseldorf, Germany
| | - Gerard Michel
- Service d'Hématologie Immunologie Oncologie Pédiatrique, CHU La Timone, Marseille, France
| | - Nuno A A Miranda
- BMT Unit, Instituto Português de Oncologia de Lisboa, Lisbon, Portugal
| | - Jose Moraleda
- Department of Hematology and Hemotherapy, Hospital Virgen de la Arrixaca-IMIB, Murcia, Spain
| | - Despina Moshous
- Unité d'Immuno-hematologie et Rhumatologie Pédiatrique, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France; Université de Paris, Paris, France; Laboratory of Genomic Dynamics in the Immune System, Institut Imagine, INSERM UMR1163, Paris, France
| | - Herbert Pichler
- Department of Stem Cell Transplantation, Children's Cancer Institute, St Anna Hospital, Vienna, Austria
| | - Kanchan Rao
- Great Ormond Street (GOS) Hospital for Children NHS Foundation Trust and University College London GOS Institute of Child Health, London, United Kingdom
| | - Petr Sedlacek
- Department of Pediatric Hematology and Oncology, Teaching Hospital Motol, 2nd Medical School, Charles University Motol, Prague, Czech Republic
| | - Mary Slatter
- Translational and Clinical Research Institute, Newcastle University, and the Paediatric Haematopoietic Stem Cell Transplant Unit, Great North Children's Hospital, Newcastle upon Tyne, United Kingdom
| | - Elena Soncini
- Pediatric Oncohaematology and BMT Unit, Children's Hospital Brescia, Brescia, Italy
| | - Carsten Speckmann
- Department of Pediatric Hematology and Oncology, Center for Pediatrics and Adolescent Medicine, and Institute for Immunodeficiency, Center for Chronic Immunodeficiency (CCI), Faculty of Medicine, Medical Center, University of Freiburg, Freiburg, Germany
| | - Mikael Sundin
- Section of Pediatric Hematology, Immunology, and HCT, Astrid Lindgren Children's Hospital, Karolinska University Hospital, and Division of Pediatrics, CLINTEC, Karolinska Institutet, Stockholm, Sweden
| | - Amos Toren
- Paediatric Hemato-oncology and BMT, Sheba Medical Center, Tel-Hashomer, Israel
| | - Kim Vettenranta
- University of Helsinki and Children's Hospital, University of Helsinki, Helsinki, Finland
| | - Austen Worth
- Great Ormond Street (GOS) Hospital for Children NHS Foundation Trust and University College London GOS Institute of Child Health, London, United Kingdom
| | - Mehmet A Yeşilipek
- Pediatric Hematology, Oncology, and Pediatric Stem Cell Transplantation Unit, Medicalpark Antalya & Göztepe Hospitals, Antalya, Turkey
| | - Marco Zecca
- Pediatric Hematology/Oncology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Fulvio Porta
- Pediatric Oncohaematology and BMT Unit, Children's Hospital Brescia, Brescia, Italy
| | - Ansgar Schulz
- Department of Pediatrics, University Medical Center Ulm, Ulm, Germany
| | - Paul Veys
- Great Ormond Street (GOS) Hospital for Children NHS Foundation Trust and University College London GOS Institute of Child Health, London, United Kingdom
| | - Alain Fischer
- Unité d'Immuno-hematologie et Rhumatologie Pédiatrique, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France; Université de Paris, Paris, France
| | - Andrew R Gennery
- Translational and Clinical Research Institute, Newcastle University, and the Paediatric Haematopoietic Stem Cell Transplant Unit, Great North Children's Hospital, Newcastle upon Tyne, United Kingdom
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16
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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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17
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Single-Center Study of 72 Patients with Severe Combined Immunodeficiency: Clinical and Laboratory Features and Outcomes. J Clin Immunol 2021; 41:1563-1573. [PMID: 34114123 DOI: 10.1007/s10875-021-01062-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 05/06/2021] [Indexed: 10/21/2022]
Abstract
Severe combined immunodeficiency is an inborn error of immunity characterized by impairments in the numbers and functions of T and B lymphocytes due to various genetic causes, and if it remains untreated, patients succumb to infections during the first 2 years of life. PURPOSE AND METHODS This study reported retrospective data from 72 infants diagnosed with SCID including their major clinical features, HSCT characteristics, and outcomes over a 20-year period (1997-2017). RESULTS Sixty-one of 72 SCID patients in the study underwent HSCT from 1997 to 2017. Median ages at the time of diagnosis and transplantation were 3.5 months and 5 months, respectively. Consanguinity was present in 68% of the patients, and T - B - NK + phenotype was predominantly identified. The overall survival was 80.3% over a 20-year period. However, the patients transplanted during an active infection had a lower survival rate of 73.9% compared to 100% for patients transplanted infection-free or with a previous infection that had resolved. The survival rate was significantly higher among recipients of HLA-identical transplants (92.9%), compared to recipients of mismatched related transplants (70%). The overall survival increased from 50 (1997-2006) to 85% (2007-2017) during the last 10 years. CONCLUSIONS This is one of the largest single-center studies in Turkey with extensive experience about SCID patients. Early diagnosis of SCID patients before the onset of an infection and early transplantation are shown to be extremely important factors affecting the outcome and increasing the survival regardless of the donor type based on the results of this study.
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18
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Kreins AY, Bonfanti P, Davies EG. Current and Future Therapeutic Approaches for Thymic Stromal Cell Defects. Front Immunol 2021; 12:655354. [PMID: 33815417 PMCID: PMC8012524 DOI: 10.3389/fimmu.2021.655354] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 03/03/2021] [Indexed: 12/14/2022] Open
Abstract
Inborn errors of thymic stromal cell development and function lead to impaired T-cell development resulting in a susceptibility to opportunistic infections and autoimmunity. In their most severe form, congenital athymia, these disorders are life-threatening if left untreated. Athymia is rare and is typically associated with complete DiGeorge syndrome, which has multiple genetic and environmental etiologies. It is also found in rare cases of T-cell lymphopenia due to Nude SCID and Otofaciocervical Syndrome type 2, or in the context of genetically undefined defects. This group of disorders cannot be corrected by hematopoietic stem cell transplantation, but upon timely recognition as thymic defects, can successfully be treated by thymus transplantation using cultured postnatal thymic tissue with the generation of naïve T-cells showing a diverse repertoire. Mortality after this treatment usually occurs before immune reconstitution and is mainly associated with infections most often acquired pre-transplantation. In this review, we will discuss the current approaches to the diagnosis and management of thymic stromal cell defects, in particular those resulting in athymia. We will discuss the impact of the expanding implementation of newborn screening for T-cell lymphopenia, in combination with next generation sequencing, as well as the role of novel diagnostic tools distinguishing between hematopoietic and thymic stromal cell defects in facilitating the early consideration for thymus transplantation of an increasing number of patients and disorders. Immune reconstitution after the current treatment is usually incomplete with relatively common inflammatory and autoimmune complications, emphasizing the importance for improving strategies for thymus replacement therapy by optimizing the current use of postnatal thymus tissue and developing new approaches using engineered thymus tissue.
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Affiliation(s)
- Alexandra Y. Kreins
- Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
- Department of Immunology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
| | - Paola Bonfanti
- Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
- Epithelial Stem Cell Biology & Regenerative Medicine Laboratory, The Francis Crick Institute, London, United Kingdom
- Institute of Immunity & Transplantation, University College London, London, United Kingdom
| | - E. Graham Davies
- Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
- Department of Immunology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
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19
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EBMT/ESID inborn errors working party guidelines for hematopoietic stem cell transplantation for inborn errors of immunity. Bone Marrow Transplant 2021; 56:2052-2062. [PMID: 34226669 PMCID: PMC8410590 DOI: 10.1038/s41409-021-01378-8] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 05/26/2021] [Accepted: 06/09/2021] [Indexed: 02/05/2023]
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20
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Blanco E, Izotova N, Booth C, Thrasher AJ. Immune Reconstitution After Gene Therapy Approaches in Patients With X-Linked Severe Combined Immunodeficiency Disease. Front Immunol 2020; 11:608653. [PMID: 33329605 PMCID: PMC7729079 DOI: 10.3389/fimmu.2020.608653] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 11/02/2020] [Indexed: 12/21/2022] Open
Abstract
X-linked severe immunodeficiency disease (SCID-X1) is an inherited, rare, and life-threating disease. The genetic origin is a defect in the interleukin 2 receptor γ chain (IL2RG) gene and patients are classically characterized by absence of T and NK cells, as well as presence of partially-functional B cells. Without any treatment the disease is usually lethal during the first year of life. The treatment of choice for these patients is hematopoietic stem cell transplantation, with an excellent survival rate (>90%) if an HLA-matched sibling donor is available. However, when alternative donors are used, the success and survival rates are often lower. Gene therapy has been developed as an alternative treatment initially using γ-retroviral vectors to correct the defective γ chain in the absence of pre-conditioning treatment. The results were highly promising in SCID-X1 infants, showing long-term T-cell recovery and clinical benefit, although NK and B cell recovery was less robust. However, some infants developed T-cell acute lymphoblastic leukemia after the gene therapy, due to vector-mediated insertional mutagenesis. Consequently, considerable efforts have been made to develop safer vectors. The most recent clinical trials using lentiviral vectors together with a low-dose pre-conditioning regimen have demonstrated excellent sustained T cell recovery, but also B and NK cells, in both children and adults. This review provides an overview about the different gene therapy approaches used over the last 20 years to treat SCID-X1 patients, particularly focusing on lymphoid immune reconstitution, as well as the developments that have improved the process and outcomes.
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Affiliation(s)
- Elena Blanco
- Molecular and Cellular Immunology, Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
| | - Natalia Izotova
- Molecular and Cellular Immunology, Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
| | - Claire Booth
- Molecular and Cellular Immunology, Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
- Department of Paediatric Immunology, Great Ormond Street Hospital NHS Trust, London, United Kingdom
| | - Adrian James Thrasher
- Molecular and Cellular Immunology, Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
- Department of Paediatric Immunology, Great Ormond Street Hospital NHS Trust, London, United Kingdom
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