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Mickey D, Camacho JV, Khan A, Kaufman D. Immunodeficiency: Quantitative and qualitative phagocytic cell defects. Allergy Asthma Proc 2024; 45:299-304. [PMID: 39294912 DOI: 10.2500/aap.2024.45.240049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2024]
Abstract
The immune system is divided into two major branches: innate and adaptive. The innate immune system is the body's first line of defense and rapidly responds in a nonspecific manner to various microorganisms, foreign materials, or injuries. Phagocytes, which include macrophages, monocytes, and neutrophils, are innate immune cells that can surround and kill microorganisms, ingest foreign material, and remove dead cells. They also indirectly boost both innate and adaptive immune responses through various activation signals. Phagocytic defects characteristically lead to fungal and bacterial infections of the respiratory tract, lymph nodes, skin, and other organ systems, and they are commonly associated with inflammatory bowel disease. This primer will review high-yield innate defects of phagocytic cells, including defects of respiratory (oxidative) burst, defects of neutrophil migration, cyclic and severe congenital neutropenias and associated disorders, and other phagocyte defect disorders.
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2
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Parisi X, Bledsoe JR. Discerning clinicopathological features of congenital neutropenia syndromes: an approach to diagnostically challenging differential diagnoses. J Clin Pathol 2024; 77:586-604. [PMID: 38589208 DOI: 10.1136/jcp-2022-208686] [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: 01/18/2024] [Accepted: 03/28/2024] [Indexed: 04/10/2024]
Abstract
The congenital neutropenia syndromes are rare haematological conditions defined by impaired myeloid precursor differentiation or function. Patients are prone to severe infections with high mortality rates in early life. While some patients benefit from granulocyte colony-stimulating factor treatment, they may still face an increased risk of bone marrow failure, myelodysplastic syndrome and acute leukaemia. Accurate diagnosis is crucial for improved outcomes; however, diagnosis depends on familiarity with a heterogeneous group of rare disorders that remain incompletely characterised. The clinical and pathological overlap between reactive conditions, primary and congenital neutropenias, bone marrow failure, and myelodysplastic syndromes further clouds diagnostic clarity.We review the diagnostically useful clinicopathological and morphological features of reactive causes of neutropenia and the most common primary neutropenia disorders: constitutional/benign ethnic neutropenia, chronic idiopathic neutropenia, cyclic neutropenia, severe congenital neutropenia (due to mutations in ELANE, GFI1, HAX1, G6PC3, VPS45, JAGN1, CSF3R, SRP54, CLPB and WAS), GATA2 deficiency, Warts, hypogammaglobulinaemia, infections and myelokathexis syndrome, Shwachman-Diamond Syndrome, the lysosomal storage disorders with neutropenia: Chediak-Higashi, Hermansky-Pudlak, and Griscelli syndromes, Cohen, and Barth syndromes. We also detail characteristic cytogenetic and molecular factors at diagnosis and in progression to myelodysplastic syndrome/leukaemia.
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Affiliation(s)
- Xenia Parisi
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jacob R Bledsoe
- Department of Pathology, Boston Children's Hospital, Boston, Massachusetts, USA
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3
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Oved JH, Gibson NM, Venella K, Elgarten CW, Wray L, Warren JT, Olson TS. Reduced toxicity matched sibling bone marrow transplant results in excellent outcomes for severe congenital neutropenia. Front Immunol 2024; 15:1369243. [PMID: 38469307 PMCID: PMC10925630 DOI: 10.3389/fimmu.2024.1369243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 02/12/2024] [Indexed: 03/13/2024] Open
Abstract
Severe congenital neutropenia (SCN) is caused by germline mutations, most commonly in ELANE, impacting neutrophil maturation and leading to high risk of life-threatening infections. Most patients with ELANE-mutant SCN can achieve safe neutrophil counts with chronic Granulocyte-Colony Stimulating Factor (G-CSF). However, up to 10% of patients have neutropenia refractory to G-CSF and require allogeneic stem cell transplant. Traditional conditioning for these patients includes busulfan and cyclophosphamide which is associated with significant toxicities. We present five patients with SCN without myeloid malignancy transplanted using a reduced toxicity regimen of busulfan, fludarabine and thymoglobulin. 5 pediatric patients with SCN underwent matched sibling donor bone marrow transplant (MSD-BMT) between 2014-2022 on or per CHP14BT057 (NCT02928991), a prospective, single center trial testing elimination of cyclophosphamide from conditioning in pediatric patients with single lineage inherited BMF syndromes. All patients had MSDs and no evidence of MDS. Conditioning consisted of PK-adjusted busulfan, fludarabine, and thymoglobulin, with calcineurin inhibitor and mycophenolate mofetil GVHD prophylaxis. With median follow-up of 48.4 months, overall and event-free survival were 100%. There was no acute GVHD and one instance of chronic limited GVHD. Patients exhibited >95% donor myeloid chimerism at 5 years post-BMT. Two patients experienced CMV reactivation without end-organ disease, and no other viral reactivation or significant infections occurred. MSD-BMT with reduced toxicity myeloablation for SCN provides excellent outcomes while minimizing toxicity. These data suggest that busulfan, fludarabine, and ATG can be considered an efficacious, low-toxicity standard of care regimen for patients with SCN undergoing MSD-BMT.
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Affiliation(s)
- Joseph H. Oved
- Division of Pediatric Transplantation & Cellular Therapies, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Nora M. Gibson
- Division of Oncology, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
- Division of Hematology, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - Kimberly Venella
- Division of Oncology, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - Caitlin W. Elgarten
- Division of Oncology, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - Lisa Wray
- Division of Oncology, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - Julia T. Warren
- Division of Hematology, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - Timothy S. Olson
- Division of Oncology, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
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Fioredda F, Onofrillo D, Farruggia P, Barone A, Veltroni M, Notarangelo LD, Menna G, Russo G, Martire B, Finocchi A, Verzegnassi F, Bonanomi S, Ramenghi U, Pillon M, Dufour C. Diagnosis and management of neutropenia in children: The approach of the Study Group on Neutropenia and Marrow Failure Syndromes of the Pediatric Italian Hemato-Oncology Association (Associazione Italiana Emato-Oncologia Pediatrica - AIEOP). Pediatr Blood Cancer 2022; 69:e29599. [PMID: 35253359 DOI: 10.1002/pbc.29599] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 11/09/2022]
Abstract
Neutropenia refers to a group of diseases characterized by a reduction in neutrophil levels below the recommended age threshold. The present study aimed to review the diagnosis and management of neutropenia, including a diagnostic toolkit and candidate underlying genes. This study also aimed to review the progress toward the definition of autoimmune and idiopathic neutropenia rising in infancy or in late childhood but without remission, and provide suggestions for efficient diagnostics, including indications for the bone marrow and genetic testing. The management and treatment protocols for common and unique presentations are also reviewed, providing evidence tailored to a single patient.
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Affiliation(s)
| | - Daniela Onofrillo
- Pediatric Hematology and Oncology Unit, Department of Hematology, Spirito Santo Hospital, Pescara, Italy
| | - Piero Farruggia
- Department of Pediatric Onco-Hematology, University Hospital, Parma, Italy
| | - Angelica Barone
- Pediatric Hematology and Oncology Unit, ARNAS (Azienda di Rilievo Nazionale ad Alta Specializzazione) Ospedale Civico, Palermo, Italy
| | - Marinella Veltroni
- Department of Pediatric Onco-Hematology, Meyer Children's Hospital, Florence, Italy
| | - Lucia Dora Notarangelo
- Oncology-Haematology and Bone Marrow Transplantation Unit, Children's Hospital, Brescia, Italy
| | - Giuseppe Menna
- AORN (Azienda Ospedaliera Rilievo Nazionale), Santobono Pausillipon, Naples, Italy
| | - Giovanna Russo
- Pediatric Ematologi and Oncology Unit, Azienda Policlinico-Vittorio Emanuele, University of Catania, Catania, Italy
| | - Baldassarre Martire
- Unit of Pediatrics and Neonatology, "Monsignor Dimiccoli" Hospital, Barletta, Italy
| | - Andrea Finocchi
- Unit of Immune and Infectious Disease, University Department of Pediatrics DPUO, Children's Hospital Bambino Gesù, IRCCS, Rome, Italy.,Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Federico Verzegnassi
- Institute of Maternal and Child Health, IRCCS Burlo Garofalo, Trieste, Italy.,Department of Pediatric Hematology, San Gerardo Hospital, Monza, Italy
| | - Sonia Bonanomi
- MBBM (Monza e Brianza per Bambino e Mamma) Foundation, Department of Pediatrics, University of Milano - Bicocca, Monza, Italy
| | - Ugo Ramenghi
- Department of Pediatric and Public Health Sciences, University of Torino, Turin, Italy
| | - Marta Pillon
- Pediatric Onco-Hematology Unit, University Hospital of Padua, Padua, Italy
| | - Carlo Dufour
- Unit of Haematology, IRCCS - Istituto Giannina Gaslini, Genoa, Italy
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5
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Chen Y, Wang Y, Zhang Q, Zhang YM, Zou J. [Mutations of the ELANE gene cause severe congenital neutropenia with periodontal disease: a case report]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2020; 38:454-459. [PMID: 32865368 PMCID: PMC7426692 DOI: 10.7518/hxkq.2020.04.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 02/19/2020] [Indexed: 02/05/2023]
Abstract
Severe congenital neutropenia is a rare disorder characterized by a consistently low absolute neutrophil count and periodontal disease. This report describes the case of an ELANE mutationin a patient with gingival bleeding and tooth mobility. Oral examination showed active periodontal infection of the primary dentition accompanied by alveolar bone loss in the posterior region. The patient was diagnosed with severe congenital neutropenia 1 year after multidisciplinary consultation. Treatment of the systemic disease and effective oral health education over a 3-year follow-up period relieved the periodontal infection and created favorable conditions for future repair.
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Affiliation(s)
- Yang Chen
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yan Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Qiong Zhang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yue-Ming Zhang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Jing Zou
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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Rotulo GA, Beaupain B, Rialland F, Paillard C, Nachit O, Galambrun C, Gandemer V, Bertrand Y, Neven B, Dore E, Moshous D, Filhon B, Aladjdi N, Sicre de Fontbrune F, de la Tour RP, Ouachee M, Bellanne-Chantelot C, Dalle JH, Donadieu J. HSCT may lower leukemia risk in ELANE neutropenia: a before-after study from the French Severe Congenital Neutropenia Registry. Bone Marrow Transplant 2020; 55:1614-1622. [PMID: 31992846 PMCID: PMC7091645 DOI: 10.1038/s41409-020-0800-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 11/28/2019] [Accepted: 01/16/2020] [Indexed: 11/26/2022]
Abstract
ELANE neutropenia is associated with myelodysplasia and acute leukemia (MDS–AL), and severe infections. Because the MDS–AL risk has also been shown to be associated with exposure to GCSF, since 2005, in France, patients receiving high daily GCSF doses (>15 μg/kg/day) are eligible for HSCT, in addition to classic indications (MDS–AL or GCSF refractoriness). We analyzed the effect of this policy. Among 144 prospectively followed ELANE-neutropenia patients enrolled in the French Severe Congenital Neutropenia Registry, we defined two groups according to period: “before 2005” for those born before 2005 and followed until 31/12/2004 (1588 person-years); and “after 2005” comprised of those born after 2005 or born before 2005 but followed after 2005 until 31/03/2019 (1327 person-years). Sixteen of our cohort patients underwent HSCT (14 long-term survivors) and six developed MDS–ALs. Six leukemic transformations occurred in the before-2005 group and none after 2005 (respective frequencies 3.8 × 10–3 vs. 0; P < 0.01), while four HSCTs were done before 2005 and 12 since 2005 (respective HSCT rates increased 2.5 × 10–3 vs. 9 × 10–3; P < 0.01). Our results support early HSCT for patients with ELANE mutations who received high GCSF doses, as it might lower the risk of leukemic transformation.
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Affiliation(s)
- Gioacchino Andrea Rotulo
- Registre des Neutropénies Chroniques, Centre de Référence des Neutropénies Chroniques, Sorbonne Université, Inserm, Centre de Recherche Saint-Antoine, Hôpital Trousseau, APHP, Paris, F-75012, France.,IRCCS Giannina Gaslini and Università degli Studi di Genova, Genoa, Italy
| | - Blandine Beaupain
- Registre des Neutropénies Chroniques, Centre de Référence des Neutropénies Chroniques, Sorbonne Université, Inserm, Centre de Recherche Saint-Antoine, Hôpital Trousseau, APHP, Paris, F-75012, France
| | | | | | - Ouahiba Nachit
- Registre des Neutropénies Chroniques, Centre de Référence des Neutropénies Chroniques, Sorbonne Université, Inserm, Centre de Recherche Saint-Antoine, Hôpital Trousseau, APHP, Paris, F-75012, France
| | | | - Virginie Gandemer
- Department of Pediatric Hematology/Oncology, University Hospital of Rennes, Rennes, France
| | - Yves Bertrand
- Institut d'Hémato-Oncologie Pédiatrie IHOPE, Lyon, France
| | - Benedicte Neven
- Necker Children's Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Eric Dore
- CHU Clermont-Ferrand, Centre Régional de Cancérologie et Thérapie Cellulaire Pédiatrique, Clermont-Ferrand, France
| | - Despina Moshous
- Unité d'Immunologie Hématologie Pédiatrique, Necker Children's Hospital, Paris, France
| | - Bruno Filhon
- Départment de Pédiatrie, Hémato-Oncologie, CHU de Bordeaux, Bordeaux, France
| | - Nathalie Aladjdi
- Départment de Pédiatrie, Hémato-Oncologie, CHU de Rouen, Rouen, France
| | - Flore Sicre de Fontbrune
- Department d'Hématologie, Service de Transplantation Médullaire, Hôpital Saint-Louis, Paris, France
| | | | - Marie Ouachee
- Institut d'Hémato-Oncologie Pédiatrie IHOPE, Lyon, France
| | | | - Jean-Hugues Dalle
- Pediatric Hematology Department, Robert-Debré Hospital, Paris, France
| | - Jean Donadieu
- Registre des Neutropénies Chroniques, Centre de Référence des Neutropénies Chroniques, Sorbonne Université, Inserm, Centre de Recherche Saint-Antoine, Hôpital Trousseau, APHP, Paris, F-75012, France.
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7
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Congenital neutropenia and primary immunodeficiency diseases. Crit Rev Oncol Hematol 2019; 133:149-162. [DOI: 10.1016/j.critrevonc.2018.10.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 10/09/2018] [Accepted: 10/09/2018] [Indexed: 02/06/2023] Open
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Hashem H, Abu-Arja R, Auletta JJ, Rangarajan HG, Varga E, Rose MJ, Bajwa RPS. Successful second hematopoietic cell transplantation in severe congenital neutropenia. Pediatr Transplant 2018; 22. [PMID: 29076228 DOI: 10.1111/petr.13078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/28/2017] [Indexed: 12/18/2022]
Abstract
Allogeneic HCT is curative for SCN; however, a standard conditioning regimen or intensity has not been established. We describe a patient with SCN associated with c.1A>G (M1V) mutation in ELANE gene resulting in refractoriness to G-CSF, who received reduced-intensity HCT and developed secondary graft failure requiring a second myeloablative HCT. This case suggests that M1V mutation confers a poor G-CSF response and HCT using the best available donor is beneficial.
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Affiliation(s)
- H Hashem
- Division of Pediatric Hematology/Oncology/BMT, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH, USA
| | - R Abu-Arja
- Division of Pediatric Hematology/Oncology/BMT, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH, USA
| | - J J Auletta
- Division of Pediatric Hematology/Oncology/BMT, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH, USA
| | - H G Rangarajan
- Division of Pediatric Hematology/Oncology/BMT, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH, USA
| | - E Varga
- Division of Pediatric Hematology/Oncology/BMT, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH, USA
| | - M J Rose
- Division of Pediatric Hematology/Oncology/BMT, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH, USA
| | - R P S Bajwa
- Division of Pediatric Hematology/Oncology/BMT, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH, USA
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Okolo ON, Katsanis E, Yun S, Reveles CY, Anwer F. Allogeneic Transplant in ELANE and MEFV Mutation Positive Severe Cyclic Neutropenia: Review of Prognostic Factors for Secondary Severe Events. Case Rep Hematol 2017; 2017:5375793. [PMID: 28197346 PMCID: PMC5286543 DOI: 10.1155/2017/5375793] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 12/01/2016] [Accepted: 12/07/2016] [Indexed: 12/15/2022] Open
Abstract
Objective and Importance. Cyclic neutropenia (CyN) is a rare autosomal dominant inherited disorder due to the mutation ELANE primarily affecting bone marrow stem cells and is characterized by recurrent neutropenia every 2 to 4 weeks. Symptoms vary from benign to severe, including death. Postulations on the cause of wide spectrum in symptom presentation include the possibility of other genetic mutations, such as MEFV. Recommended treatment for CyN is G-CSF to keep ANC higher to minimize risk of infection. Case. A 25-year-old male diagnosed with CyN, on G-CSF but worsening quality of life. Pretransplant investigations revealed ELANE mutation positive severe CyN along with familial Mediterranean fever (MEFV) mutation. Intervention. Bone marrow transplantation as treatment for dual mutation (ELANE and MEFV mutation) positive severe CyN. Conclusion. BMT may be considered as an alternative treatment for severe CyN in patients who are refractory to G-CSF. It is postulated that in our patient the combined mutations (CyN and MEFV) may have contributed to the severity of this individual's symptoms. We suggest CyN patients who present with severe symptoms have evaluation with ELANE mutation testing, Periodic Fever Syndromes Panel, and routine marrow assessment with FISH, conventional cytogenetics, and morphological evaluation for MDS/AML.
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Affiliation(s)
| | - Emmanuel Katsanis
- Department of Medicine, University of Arizona, Tucson, AZ, USA
- Department of Pediatrics, University of Arizona, Tucson, AZ, USA
- Division of Blood & Marrow Transplantation, University of Arizona, Tucson, AZ, USA
- Department of Pathology, University of Arizona, Tucson, AZ, USA
| | - Seongseok Yun
- Department of Medicine, University of Arizona, Tucson, AZ, USA
| | | | - Faiz Anwer
- Department of Pediatrics, University of Arizona, Tucson, AZ, USA
- Division of Hematology and Oncology, University of Arizona, Tucson, AZ, USA
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10
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Fernandes KS, da Silva Santos PS, de Rezende NPM, Gallottini M. Kostmann syndrome: oral aspects and 10-year follow-up case report. SPECIAL CARE IN DENTISTRY 2016; 36:339-344. [DOI: 10.1111/scd.12192] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Karin Sá Fernandes
- Postdoctoral Researcher; Special Care Dentistry Center, Dental School, University of São Paulo; São Paulo, Brazil
| | - Paulo Sérgio da Silva Santos
- Assistant Professor; Department of Stomatology, Bauru School of Dentistry, University of São Paulo; São Paulo, Brazil
| | | | - Marina Gallottini
- Head and Full Professor; Special Care Dentistry Center, Dental School, University of São Paulo; São Paulo, Brazil
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11
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Osone S, Imamura T, Fukushima-Nakase Y, Kitamura-Masaki A, Kanai S, Imai T, Imashuku S, Kuroda H. Case Reports of Severe Congenital Neutropenia Treated With Unrelated Cord Blood Transplantation With Reduced-intensity Conditioning. J Pediatr Hematol Oncol 2016; 38:49-52. [PMID: 26599988 DOI: 10.1097/mph.0000000000000487] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Allogeneic stem cell transplantation is a curative treatment for severe congenital neutropenia (SCN). However, a standard conditioning regimen and donor source have not been established. We report 3 consecutive cases of SCN who were successfully treated by cord blood transplantation (CBT) with reduced-intensity conditioning consisting of fludarabine, melphalan, and low-dose total body irradiation. All cases achieved complete donor chimerism without severe infectious complications and have maintained normal neutrophil counts for between 3 and 9 years after CBT. These results suggest that CBT with reduced-intensity conditioning can be an alternative therapy for SCN when human leukocyte antigen-matched bone marrow donor is unavailable.
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Affiliation(s)
- Shinya Osone
- *Department of Pediatrics, Kyoto City Hospital †Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine ‡Uji-Tokushukai Medical Center, Uji, Kyoto, Japan
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12
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Babushok DV, Bessler M, Olson TS. Genetic predisposition to myelodysplastic syndrome and acute myeloid leukemia in children and young adults. Leuk Lymphoma 2015; 57:520-36. [PMID: 26693794 DOI: 10.3109/10428194.2015.1115041] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Myelodysplastic syndrome (MDS) is a clonal blood disorder characterized by ineffective hematopoiesis, cytopenias, dysplasia and an increased risk of acute myeloid leukemia (AML). With the growing availability of clinical genetic testing, there is an increasing appreciation that a number of genetic predisposition syndromes may underlie apparent de novo presentations of MDS/AML, particularly in children and young adults. Recent findings of clonal hematopoiesis in acquired aplastic anemia add another facet to our understanding of the mechanisms of MDS/AML predisposition. As more predisposition syndromes are recognized, it is becoming increasingly important for hematologists and oncologists to have familiarity with the common as well as emerging syndromes, and to have a systematic approach to diagnosis and screening of at risk patient populations. Here, we provide a practical algorithm for approaching a patient with a suspected MDS/AML predisposition, and provide an in-depth review of the established and emerging familial MDS/AML syndromes caused by mutations in the ANKRD26, CEBPA, DDX41, ETV6, GATA2, RUNX1, SRP72 genes. Finally, we discuss recent data on the role of somatic mutations in malignant transformation in acquired aplastic anemia, and review the practical aspects of MDS/AML management in patients and families with predisposition syndromes.
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Affiliation(s)
- Daria V Babushok
- a Division of Hematology-Oncology, Department of Medicine , Hospital of the University of Pennsylvania , Philadelphia , PA , USA ;,b Comprehensive Bone Marrow Failure Center, Division of Hematology, Department of Pediatrics , Children's Hospital of Philadelphia , Philadelphia , PA , USA
| | - Monica Bessler
- a Division of Hematology-Oncology, Department of Medicine , Hospital of the University of Pennsylvania , Philadelphia , PA , USA ;,b Comprehensive Bone Marrow Failure Center, Division of Hematology, Department of Pediatrics , Children's Hospital of Philadelphia , Philadelphia , PA , USA
| | - Timothy S Olson
- b Comprehensive Bone Marrow Failure Center, Division of Hematology, Department of Pediatrics , Children's Hospital of Philadelphia , Philadelphia , PA , USA ;,c Blood and Marrow Transplant Program, Division of Oncology, Department of Pediatrics , Children's Hospital of Philadelphia and University of Pennsylvania , Philadelphia , PA , USA
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13
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Hagin D, Burroughs L, Torgerson TR. Hematopoietic Stem Cell Transplant for Immune Deficiency and Immune Dysregulation Disorders. Immunol Allergy Clin North Am 2015; 35:695-711. [DOI: 10.1016/j.iac.2015.07.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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14
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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: 421] [Impact Index Per Article: 46.8] [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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Nayak RC, Trump LR, Aronow BJ, Myers K, Mehta P, Kalfa T, Wellendorf AM, Valencia CA, Paddison PJ, Horwitz MS, Grimes HL, Lutzko C, Cancelas JA. Pathogenesis of ELANE-mutant severe neutropenia revealed by induced pluripotent stem cells. J Clin Invest 2015; 125:3103-16. [PMID: 26193632 DOI: 10.1172/jci80924] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 06/05/2015] [Indexed: 12/27/2022] Open
Abstract
Severe congenital neutropenia (SCN) is often associated with inherited heterozygous point mutations in ELANE, which encodes neutrophil elastase (NE). However, a lack of appropriate models to recapitulate SCN has substantially hampered the understanding of the genetic etiology and pathobiology of this disease. To this end, we generated both normal and SCN patient-derived induced pluripotent stem cells (iPSCs), and performed genome editing and differentiation protocols that recapitulate the major features of granulopoiesis. Pathogenesis of ELANE point mutations was the result of promyelocyte death and differentiation arrest, and was associated with NE mislocalization and activation of the unfolded protein response/ER stress (UPR/ER stress). Similarly, high-dose G-CSF (or downstream signaling through AKT/BCL2) rescues the dysgranulopoietic defect in SCN patient-derived iPSCs through C/EBPβ-dependent emergency granulopoiesis. In contrast, sivelestat, an NE-specific small-molecule inhibitor, corrected dysgranulopoiesis by restoring normal intracellular NE localization in primary granules; ameliorating UPR/ER stress; increasing expression of CEBPA, but not CEBPB; and promoting promyelocyte survival and differentiation. Together, these data suggest that SCN disease pathogenesis includes NE mislocalization, which in turn triggers dysfunctional survival signaling and UPR/ER stress. This paradigm has the potential to be clinically exploited to achieve therapeutic responses using lower doses of G-CSF combined with targeting to correct NE mislocalization.
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Stem cell transplantation in severe congenital neutropenia: an analysis from the European Society for Blood and Marrow Transplantation. Blood 2015; 126:1885-92; quiz 1970. [PMID: 26185129 DOI: 10.1182/blood-2015-02-628859] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Accepted: 06/10/2015] [Indexed: 01/15/2023] Open
Abstract
Allogeneic hematopoietic stem cell transplantation (HSCT) is the only curative treatment of severe congenital neutropenia (SCN), but data on outcome are scarce. We report on the outcome of 136 SCN patients who underwent HSCT between 1990 and 2012 in European and Middle East centers. The 3-year overall survival (OS) was 82%, and transplant-related mortality (TRM) was 17%. In multivariate analysis, transplants performed under the age of 10 years, in recent years, and from HLA-matched related or unrelated donors were associated with a significantly better OS. Frequency of graft failure was 10%. Cumulative incidence (day +90) of acute graft-versus-host disease (GVHD) grade 2-4 was 21%. In multivariate analysis, HLA-matched related donor and prophylaxis with cyclosporine A and methotrexate were associated with lower occurrence of acute GVHD. Cumulative incidence (1 year) of chronic GVHD was 20%. No secondary malignancies occurred after a median follow-up of 4.6 years. These data show that the outcome of HSCT for SCN from HLA-matched donors, performed in recent years, in patients younger than 10 years is acceptable. Nevertheless, given the TRM, a careful selection of HSCT candidates should be undertaken.
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Touw IP. Game of clones: the genomic evolution of severe congenital neutropenia. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2015; 2015:1-7. [PMID: 26637693 DOI: 10.1182/asheducation-2015.1.1] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Severe congenital neutropenia (SCN) is a genetically heterogeneous condition of bone marrow failure usually diagnosed in early childhood and characterized by a chronic and severe shortage of neutrophils. It is now well-established that mutations in HAX1 and ELANE (and more rarely in other genes) are the genetic cause of SCN. In contrast, it has remained unclear how these mutations affect neutrophil development. Innovative models based on induced pluripotent stem cell technology are being explored to address this issue. These days, most SCN patients receive life-long treatment with granulocyte colony-stimulating factor (G-CSF, CSF3). CSF3 therapy has greatly improved the life expectancy of SCN patients, but also unveiled a high frequency of progression toward myelodysplastic syndrome (MDS) and therapy refractory acute myeloid leukemia (AML). Expansion of hematopoietic clones with acquired mutations in the gene encoding the G-CSF receptor (CSF3R) is regularly seen in SCN patients and AML usually descends from one of these CSF3R mutant clones. These findings raised the questions how CSF3R mutations affect CSF3 responses of myeloid progenitors, how they contribute to the pre-leukemic state of SCN, and which additional events are responsible for progression to leukemia. The vast (sub)clonal heterogeneity of AML and the presence of AML-associated mutations in normally aged hematopoietic clones make it often difficult to determine which mutations are responsible for the leukemic process. Leukemia predisposition syndromes such as SCN are unique disease models to identify the sequential acquisition of these mutations and to interrogate how they contribute to clonal selection and leukemic evolution.
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Affiliation(s)
- Ivo P Touw
- Department of Hematology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
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Roques G, Munzer M, Barthez MAC, Beaufils S, Beaupain B, Flood T, Keren B, Bellanné-Chantelot C, Donadieu J. Neurological findings and genetic alterations in patients with Kostmann syndrome and HAX1 mutations. Pediatr Blood Cancer 2014; 61:1041-8. [PMID: 24482108 DOI: 10.1002/pbc.24964] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 01/02/2014] [Indexed: 01/17/2023]
Abstract
OBJECTIVES To describe the clinical profile and the prevalence of severe congenital neutropenia (SCN) and HAX1 mutations, so-called Kostmann syndrome, in France. STUDY DESIGN Two pedigrees were identified from the French registry. RESULTS The study included five subjects (three males), which represent 0.7% of the 759 SCN cases registered in France. The age at diagnosis was 0.3 years (range: 0.1-1.2 years) and the median age at the last follow-up was 7.3 years (range: 1.2-17.8 years). A novel large homozygous deletion of the HAX1 gene (exons 2-5) was found in one pedigree; while, a homozygous frameshift mutation was identified in exon 3 (c.430dupG, p.Val144fs) in the second pedigree. Severe bacterial infections were observed in four patients, including two cases of sepsis, one case of pancolitis, a lung abscess, and recurrent cellulitis and stomatitis. During routine follow-up, the median neutrophil value was 0.16 × 10(9)/L, associated with monocytosis (2 × 10(9)/L). Bone marrow (BM) smears revealed a decrease of the granulocytic lineage with no mature myeloid cells above the myelocytes. One patient died at age 2 from neurological complications, while two other patients, including one who underwent a hematopoietic stem cell transplantation (HSCT) at age 5, are living with very severe neurological retardation. CONCLUSIONS SCN with HAX1 mutations, is a rare sub type of congenital neutropenia, mostly observed in population from Sweden and Asia minor, associating frequently neurological retardation, when the mutations involved the B isoform of the protein.
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Affiliation(s)
- Gaëlle Roques
- Service d'Hémato-Oncologie Pédiatrique, APHP Hopital Trousseau, Paris, France; Service de pédiatrie, CHU de Reims, Reims, France
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Carlsson G, Kriström B, Nordenskj˶ld M, Henter JI, Fadeel B. Ovarian failure in HAX1-deficient patients: is there a gender-specific difference in pubertal development in severe congenital neutropenia or Kostmann disease? Acta Paediatr 2013; 102:78-82. [PMID: 23050867 DOI: 10.1111/apa.12050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 08/14/2012] [Accepted: 10/04/2012] [Indexed: 11/30/2022]
Abstract
AIM Severe congenital neutropenia (SCN) is a rare disorder of myelopoiesis characterized by neutropenia, recurrent bacterial infections and a maturation arrest of the myelopoiesis in the bone marrow. Homozygous mutations in the HAX1 gene were described in patients with autosomal recessive SCN or Kostmann disease. Some of these patients display neurological disease. We noted, during the course of clinical management of patients with Kostmann disease, insufficient pubertal development in female patients, but not in our male patients. The study objective was to provide a detailed account of this phenotype and its possible relation to HAX1 mutations. METHODS Detailed clinical histories and laboratory investigations of three patients with Kostmann disease belonging to the original kindred in northern Sweden described by Rolf Kostmann are reported. RESULTS We report one male patient with normal puberty and two female patients with insufficient pubertal development. Elevated levels of LH and FSH were recorded in both patients. All three patients harbour the same p.Glu190X mutation in the HAX1 gene. CONCLUSIONS We show for the first time that female patients with Kostmann disease display primary gonadal insufficiency. This suggests a possible role for HAX1 in the development and/or function of the human ovary.
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Affiliation(s)
- Göran Carlsson
- Childhood Cancer Research Unit; Department of Women's and Children's Health; Karolinska Institutet; Karolinska University Hospital; Stockholm; Sweden
| | - Berit Kriström
- Department of Pediatrics; Institution of Clinical Science; Umeå University; Umeå; Sweden
| | - Magnus Nordenskj˶ld
- Clinical Genetics Unit; Department of Molecular Medicine and Surgery; Karolinska Institutet; Karolinska University Hospital; Stockholm; Sweden
| | - Jan-Inge Henter
- Childhood Cancer Research Unit; Department of Women's and Children's Health; Karolinska Institutet; Karolinska University Hospital; Stockholm; Sweden
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Bando H, Nagao H, Nishio T, Hirota R, Sakaguchi H, Imamura T, Hisa Y. Laryngeal stenosis in a patient with severe congenital neutropenia. Laryngoscope 2012; 123:455-7. [PMID: 22628258 DOI: 10.1002/lary.23375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Revised: 03/28/2012] [Accepted: 03/30/2012] [Indexed: 11/10/2022]
Abstract
OBJECTIVES/HYPOTHESIS We report the first case of laryngeal stenosis with granuloma in a patient with severe congenital neutropenia (SCN). STUDY DESIGN Case report and retrospective review. METHODS Review of medical records. RESULTS A 6-year-old female who was diagnosed with SCN presented with a cough and wheezing. An endoscopic study revealed laryngeal stenosis with granuloma. Tracheotomy and direct laryngoscopy were performed under general anesthesia, and administration of granulocyte colony-stimulating factor was started. The laryngeal granuloma disappeared 3 weeks later, and the tracheal stoma was closed. CONCLUSIONS Presence of a laryngeal lesion should be considered in SCN patients with persistent airway symptoms.
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Affiliation(s)
- Hideki Bando
- Department of Otolaryngology-Head and Neck Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan.
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21
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Carlsson G, Fasth A, Berglöf E, Lagerstedt-Robinson K, Nordenskjöld M, Palmblad J, Henter JI, Fadeel B. Incidence of severe congenital neutropenia in Sweden and risk of evolution to myelodysplastic syndrome/leukaemia. Br J Haematol 2012; 158:363-9. [PMID: 22624626 DOI: 10.1111/j.1365-2141.2012.09171.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Accepted: 04/11/2012] [Indexed: 11/30/2022]
Abstract
Severe congenital neutropenia (SCN) is characterized by low blood neutrophil counts, early bacterial infections, and risk of leukaemia development. As yet, no population-based incidence estimates of SCN have been reported. Children less than 16 years of age with SCN were sought in Sweden during the 20-year period 1987-2006 by a questionnaire to all Swedish Departments of Paediatrics and by reviewing the Swedish Health and Welfare Statistical Databases. Thirty-two patients were diagnosed with congenital neutropenia during this period. All received treatment with recombinant granulocyte-colony stimulating factor (G-CSF). Twenty-one patients were diagnosed as SCN or probable SCN, corresponding to 1·0 per 100,000 live births. Nine (43%) had ELANE mutations, four (19%) HAX1 mutations and eight (38%) were children with disease of unknown genetic aetiology. Four out of 21 patients (19%) developed myelodysplastic syndrome/leukaemia and three (14%) died, all with leukaemia. The cumulative incidence of myelodysplastic syndrome/leukaemia was 31%. The observed incidence of SCN in this population-based study was higher than previously estimated, possibly because genetic testing now can identify SCN cases previously thought to be idiopathic or benign neutropenia. The risk of developing myelodysplastic syndrome/leukaemia is considerable. ELANE mutations are the most commonly identified genetic defects.
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Affiliation(s)
- Göran Carlsson
- Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden.
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Park YS, Lim GW, Cho KA, Woo SY, Shin M, Yoo ES, Chan Ra J, Ryu KH. Improved viability and activity of neutrophils differentiated from HL-60 cells by co-culture with adipose tissue-derived mesenchymal stem cells. Biochem Biophys Res Commun 2012; 423:19-25. [PMID: 22609208 DOI: 10.1016/j.bbrc.2012.05.049] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Accepted: 05/09/2012] [Indexed: 12/24/2022]
Abstract
Neutropenia is a principal complication of cancer treatment. We investigated the supportive effect of adipose tissue-derived mesenchymal stem cells (AD-MSCs) on the viability and function of neutrophils. Neutrophils were derived from HL-60 cells by dimethylformamide stimulation and cultured with or without AD-MSCs under serum-starved conditions to evaluate neutrophil survival, proliferation, and function. Serum starvation resulted in the apoptosis of neutrophils and decreased cell survival. The co-culture of neutrophils and AD-MSCs resulted in cell survival and inhibited neutrophil apoptosis under serum-starved conditions. The survival rate of neutrophils was prolonged up to 72 h, and the expression levels of interferon (IFN)-α, granulocyte colony-stimulating factor (G-CSF), granulocyte-macrophage colony-stimulating factor, and transforming growth factor (TGF)-β in AD-MSCs were increased after co-culture with neutrophils. AD-MSCs promoted the viability of neutrophils by inhibiting apoptosis as well as enhancing respiratory burst, which could potentially be mediated by the increased expression of IFN-α, G-CSF, and TGF-β. Thus, we conclude that the use of AD-MSCs may be a promising cell-based therapy for increasing immunity by accelerating neutrophil function.
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Affiliation(s)
- Yoon Shin Park
- Department of Pediatrics, Ewha Womans University, School of Medicine, Ewha Medical Research Center, Seoul, Republic of Korea
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Boztug K, Rosenberg PS, Dorda M, Banka S, Moulton T, Curtin J, Rezaei N, Corns J, Innis JW, Avci Z, Tran HC, Pellier I, Pierani P, Fruge R, Parvaneh N, Mamishi S, Mody R, Darbyshire P, Motwani J, Murray J, Buchanan GR, Newman WG, Alter BP, Boxer LA, Donadieu J, Welte K, Klein C. Extended spectrum of human glucose-6-phosphatase catalytic subunit 3 deficiency: novel genotypes and phenotypic variability in severe congenital neutropenia. J Pediatr 2012; 160:679-683.e2. [PMID: 22050868 DOI: 10.1016/j.jpeds.2011.09.019] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Revised: 08/09/2011] [Accepted: 09/08/2011] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To delineate the phenotypic and molecular spectrum of patients with a syndromic variant of severe congenital neutropenia (SCN) due to mutations in the gene encoding glucose-6-phosphatase catalytic subunit 3 (G6PC3). STUDY DESIGN Patients with syndromic SCN were characterized for associated malformations and referred to us for G6PC3 mutational analysis. RESULTS In a cohort of 31 patients with syndromic SCN, we identified 16 patients with G6PC3 deficiency including 11 patients with novel biallelic mutations. We show that nonhematologic features of G6PC3 deficiency are good predictive indicators for mutations in G6PC3. Additionally, we demonstrate genetic variability in this disease and define novel features such as growth hormone deficiency, genital malformations, disrupted bone remodeling, and abnormalities of the integument. G6PC3 mutations may be associated with hydronephrosis or facial dysmorphism. The risk of transition to myelodysplastic syndrome/acute myeloid leukemia may be lower than in other genetically defined SCN subgroups. CONCLUSIONS The phenotypic and molecular spectrum in G6PC3 deficiency is wider than previously appreciated. The risk of transition to myelodysplastic syndrome or acute myeloid leukemia may be lower in G6PC3 deficiency compared with other subgroups of SCN.
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Affiliation(s)
- Kaan Boztug
- Research Center for Molecular Medicine of the Austrian Academy of Sciences (CeMM), Vienna, Austria.
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Wan C, Yu HH, Lu MY, Lee JH, Wang LC, Lin YT, Yang YH, Chiang BL. Clinical manifestations and outcomes of pediatric chronic neutropenia. J Formos Med Assoc 2012; 111:220-7. [DOI: 10.1016/j.jfma.2010.12.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Revised: 11/21/2010] [Accepted: 12/06/2010] [Indexed: 12/22/2022] Open
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Abstract
PURPOSE OF REVIEW Hematopoietic stem cell transplantation (HCT) is the only curative option for patients with severe congenital neutropenia (SCN). Transplant success is dependent on identifying at-risk patients and proceeding to transplant before the development of severe infections or malignant transformation. This review focuses on recent advancements in risk stratification of SCN patients, indications for HCT, and review of published transplant studies. RECENT FINDINGS Patients with poor neutrophil response despite high doses of granulocyte colony-stimulating factor (G-CSF) are at greatest risk for malignant transformation. Other studies demonstrate elevated risk with mutations in the G-CSF receptor gene and a specific mutation in the ELANE gene. These patients are at high-risk of sepsis or leukemia development and should proceed to transplant with best available donor. As recent published studies demonstrate, HCT is highly successful in patients without leukemia and, therefore, may be considered in selected low-risk patients given the life-long risk of malignancy and infection. SUMMARY The decision whether to proceed to HCT in healthy patients maintained on G-CSF is difficult. As transplant-related mortality continues to decrease, the role of transplant in SCN is likely to expand to more patients.
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Fioredda F, Calvillo M, Bonanomi S, Coliva T, Tucci F, Farruggia P, Pillon M, Martire B, Ghilardi R, Ramenghi U, Renga D, Menna G, Pusiol A, Barone A, Gambineri E, Palazzi G, Casazza G, Lanciotti M, Dufour C. Congenital and acquired neutropenias consensus guidelines on therapy and follow-up in childhood from the Neutropenia Committee of the Marrow Failure Syndrome Group of the AIEOP (Associazione Italiana Emato-Oncologia Pediatrica). Am J Hematol 2012; 87:238-43. [PMID: 22213173 DOI: 10.1002/ajh.22242] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Accepted: 10/26/2011] [Indexed: 12/12/2022]
Abstract
The management of congenital and acquired neutropenias presents some differences according to the type of the disease. Treatment with recombinant human granulocyte-colony stimulating factor (G-CSF) is not standardized and scanty data are available on the best schedule to apply. The frequency and the type of longitudinal controls in patients affected with neutropenias are not usually discussed in the literature. The Neutropenia Committee of the Marrow Failure Syndrome Group (MFSG) of the Associazione Italiana di Emato-Oncologia Pediatrica (AIEOP) elaborated this document following design and methodology formerly approved by the AIEOP board. The panel of experts reviewed the literature on the topic and participated in a conference producing a document that includes recommendations on neutropenia treatment and timing of follow-up.
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Educational paper: Defects in number and function of neutrophilic granulocytes causing primary immunodeficiency. Eur J Pediatr 2011; 170:1369-76. [PMID: 21968907 PMCID: PMC3197933 DOI: 10.1007/s00431-011-1584-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 09/13/2011] [Indexed: 12/31/2022]
Abstract
The neutrophilic granulocyte (neutrophil) is the most important cellular component of the innate immune system. A total absence of neutrophils or a significant decrease in their number leads to severe immunodeficiency. A mature neutrophil, released from the bone marrow, should be able to migrate from the blood towards the tissues, following a chemotactic gradient to a pathogen. In order to be neutralized, this pathogen has to be recognized, phagocytosed, and destroyed by lytic enzymes contained in the neutrophil's granules and reactive oxygen species formed by the enzyme complex NADPH oxidase. Rare genetic defects leading to the loss of each one of these biological properties of the neutrophil have been described and are associated with immunodeficiency. This review provides a summary of the normal development and biological functions of neutrophils and describes the diseases caused by defects in neutrophil number and function.
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