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Bagrul İ, Aydin EA, Tuncez S, Baglan E, Özdel S, Bülbül M. Effect of Colchicine Treatment on Clinical Course in Children with PFAPA Syndrome. KLINISCHE PADIATRIE 2024; 236:296-300. [PMID: 38387479 DOI: 10.1055/a-2274-9046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
INTRODUCTION Periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis syndrome (PFAPA) is the most common periodic fever condition in children. There is no consensus on treatment to prevent attacks and reduce their frequency. In this study, we aimed to evaluate the effectiveness of colchicine treatment in PFAPA syndrome. In addition, we described the demographic and clinical features of PFAPA patients. MATERIALS AND METHODS We retrospectively analyzed 58 PFAPA patients who were started on colchicine treatment between January 2017 and January 2022. Demographic data, clinical features, laboratory tests, genetic analysis of MEditerranean FeVer (MEFV) mutations, and autoinflammatory disease activity index (AIDAI) scores of all patients were evaluated. In addition, patients were divided into two groups according to MEFV variants and compared. RESULTS Attack frequency, duration, and AIDAI scores decreased in all patients after colchicine treatment. Duration of follow-up was 13.53±6.65 months. The median±IQR age at diagnosis was 3.2 (2-5) years. Thirty three (56.9%) patients had heterozygous mutations of MEFV. The most common MEFV variants were M694V (63.6%). There was no significant difference between the two groups in terms of colchicine responses. CONCLUSION Colchicine treatment is effective and safe in patients with PFAPA who have frequent attacks. No association was established between the presence of heterozygous mutations of MEFV and colchicine response.
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Affiliation(s)
- İlknur Bagrul
- Department of Pediatric Rheumatology, Ankara Etlik Integrated Health Campus, ANKARA, Turkey
| | - Elif Arslanoglu Aydin
- Department of Pediatric Rheumatology, Ankara Etlik Integrated Health Campus, ANKARA, Turkey
| | - Serife Tuncez
- Department of Pediatric Rheumatology, Ankara Etlik Integrated Health Campus, ANKARA, Turkey
| | - Esra Baglan
- Department of Pediatric Rheumatology, Ankara Etlik Integrated Health Campus, ANKARA, Turkey
| | - Semanur Özdel
- Department of Pediatric Rheumatology, Ankara Etlik Integrated Health Campus, ANKARA, Turkey
| | - Mehmet Bülbül
- Department of Pediatric Nephrology, Dr Sami Ulus Gynecology Obstetrics and Child Health and Diseases Training and Research Hospital, Ankara, Turkey
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Broide M, Levinsky Y, Tal R, Harel L, Shoham S, Ahmad SA, Butbul Aviel Y, Amarilyo G. Extreme Periodic Fever, Aphthous Stomatitis, Pharyngitis, Adenitis (PFAPA): a discrete group of patients. Pediatr Rheumatol Online J 2023; 21:93. [PMID: 37658370 PMCID: PMC10474755 DOI: 10.1186/s12969-023-00880-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 08/21/2023] [Indexed: 09/03/2023] Open
Abstract
OBJECTIVE Periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis (PFAPA) syndrome is the most common periodic fever syndrome in children; by definition, episodes occur every 2 to 8 weeks. However, in a subset of our patients, we noticed a higher frequency of attacks, of less than 2 weeks, which we refer to as extreme PFAPA (ePFAPA). This group consisted of patients who were extreme upon presentation of PFAPA, and those who became extreme after initiation of abortive corticosteroid treatment. We aimed to characterize demographic and clinical features of ePFAPA, including the two groups, and to compare them to patients with non-extreme PFAPA (nPFAPA). STUDY DESIGN The medical records of 365 patients with PFAPA who attended Schneider Children's Medical Center of Israel from March 2014 to April 2021 were reviewed. Patients with concomitant familial Mediterranean fever were excluded. Characteristics of the ePFAPA (including subgroups) and nPFAPA groups were compared using Wilcoxon rank sum, Pearson's chi-squared, and Fisher's exact tests. RESULTS Forty-seven patients (12.9%) were identified as having ePFAPA. Among patients with ePFAPA, compared to patients with nPFAPA, the median (interquartile range) age at disease onset was earlier: 1.5 years (0.7-2.5) vs. 2.5 years (1.5-4.0), P < 0.001; and diagnosis was younger: 2.6 years (2.0-3.6) vs. 4.5 years (3.0-6.2), P < 0.001. A higher proportion of patients with ePFAPA than nPFAPA were treated with colchicine prophylaxis (53% vs. 19%, P < 0.001), but symptoms and signs during flares did not differ significantly between these groups. Demographic and clinical characteristics were similar between patients with ePFAPA from presentation of PFAPA (22, 47% of those with ePFAPA) and ePFAPA from after corticosteroid treatment. CONCLUSION About half the patients categorized with ePFAPA syndrome already had extreme features upon presentation. Patients with ePFAPA compared to nPFAPA presented and were diagnosed at an earlier age.
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Affiliation(s)
- Mor Broide
- Department of Pediatrics A, Schneider Children's Medical Center of Israel, Petach Tikva, Israel.
| | - Yoel Levinsky
- Pediatric Rheumatology Unit, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Rotem Tal
- Pediatric Rheumatology Unit, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Liora Harel
- Pediatric Rheumatology Unit, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shoval Shoham
- Schneider Children's Medical Center of Israel, Petach Tikva, Israel
| | - Sabreen Abu Ahmad
- Department of Pediatrics B, Ruth Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
| | - Yonatan Butbul Aviel
- Pediatric Rheumatology Service, Ruth Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
- The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Gil Amarilyo
- Pediatric Rheumatology Unit, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Hausmann J, Dedeoglu F, Broderick L. Periodic Fever, Aphthous Stomatitis, Pharyngitis, and Adenitis Syndrome and Syndrome of Unexplained Recurrent Fevers in Children and Adults. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2023; 11:1676-1687. [PMID: 36958521 DOI: 10.1016/j.jaip.2023.03.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 03/01/2023] [Accepted: 03/08/2023] [Indexed: 03/25/2023]
Abstract
Children and adults with autoinflammatory disorders, who often experience recurrent fevers, rashes, cold-induced symptoms, conjunctivitis, lymphadenopathy, recurrent infections, aphthous stomatitis, and abnormal blood cell counts, may present to the allergist/immunologist because the symptoms mimic allergies and disorders of immunity. In recent years, there has been increased recognition of non-monogenic autoinflammatory disorders, including periodic fever, aphthous stomatitis, pharyngitis, and adenitis syndrome and syndrome of undifferentiated recurrent fevers. For many clinical practitioners, the natural history, diagnostic criteria, differential diagnoses, and preferred therapies remain challenging because of the presumed rarity of patients and the evolving field of autoinflammation. Here, we aim to provide a practical framework for the clinical allergist/immunologist to evaluate and treat this patient population.
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Affiliation(s)
- Jonathan Hausmann
- Department of Medicine, Harvard Medical School, Boston, Mass; Program in Rheumatology, Division of Immunology, Boston Children's Hospital, Boston, Mass; Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital, Boston, Mass
| | - Fatma Dedeoglu
- Department of Medicine, Harvard Medical School, Boston, Mass; Department of Pediatrics, Harvard Medical School, Boston, Mass
| | - Lori Broderick
- Division of Allergy, Immunology, and Rheumatology, Department of Pediatrics, University of California-San Diego, La Jolla, Calif; Rady Children's Foundation, Rady Children's Hospital, San Diego, Calif.
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Hara M, Morimoto N, Watabe T, Morisaki N, Matsumoto K. Can the effectiveness of tonsillectomy for PFAPA syndrome be predicted based on clinical factors. Int J Rheum Dis 2023; 26:480-486. [PMID: 36608697 DOI: 10.1111/1756-185x.14559] [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: 09/04/2022] [Revised: 11/28/2022] [Accepted: 12/26/2022] [Indexed: 01/09/2023]
Abstract
OBJECTIVES To evaluate the clinical factors associated with the outcome of tonsillectomy in children with periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis (PFAPA) syndrome, thereby clarifying who would most likely benefit from that surgery. METHODS This was a case-control study of 53 PFAPA patients who underwent tonsillectomy and were divided into a complete-resolution group and a postoperative-fever group. Logistic regression analyses were performed using 17 clinical factors as variables to identify factors associated with the surgical outcome. Hierarchical cluster analysis was also performed to evaluate for relationships between phenotypes and surgical outcomes. RESULTS Thirty-nine (73.6%) patients had complete resolution after tonsillectomy. In simple logistic regression analysis, the surgical outcome showed significant positive trends with late-onset (odds ratio [OR] 7.1, P = 0.02) and presence of headache (OR 6.5, P = 0.01). In stepwise multiple logistic regression analysis adjusted for age at onset, presence of headache was significantly associated with complete resolution (OR 6.5, P = 0.01). The complete resolution rates for each combination of headache status and age at onset were as follows: presence of headache/age at onset ≥36 months, 100% (14/14); presence of headache/age at onset <36 months, 76.9% (10/13); absence of headache/age at onset ≥36 months, 75.0% (6/8); and absence of headache/age at onset <36 months, 43.8% (7/16). In hierarchical cluster analysis, complete resolution, age at onset, and headache were in the same cluster. CONCLUSIONS PFAPA patients with headache and late onset responded well to tonsillectomy. The mechanisms underlying this association may warrant further investigation.
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Affiliation(s)
- Mariko Hara
- Department of Allergy and Clinical Immunology, National Research Institute for Child Health and Development, Tokyo, Japan.,Department of Otorhinolaryngology, National Center for Child Health and Development, Tokyo, Japan
| | - Noriko Morimoto
- Department of Otorhinolaryngology, National Center for Child Health and Development, Tokyo, Japan
| | - Takahisa Watabe
- Department of Otorhinolaryngology, National Center for Child Health and Development, Tokyo, Japan
| | - Naho Morisaki
- Division of Lifecourse Epidemiology, Department of Social Medicine, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Kenji Matsumoto
- Department of Allergy and Clinical Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
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Rydenman K, Fjeld H, Hätting J, Berg S, Fasth A, Wekell P. Epidemiology and clinical features of PFAPA: a retrospective cohort study of 336 patients in western Sweden. Pediatr Rheumatol Online J 2022; 20:82. [PMID: 36109811 PMCID: PMC9479440 DOI: 10.1186/s12969-022-00737-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 08/24/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis (PFAPA) syndrome is generally regarded as the most common autoinflammatory disease, but the epidemiology of the disease is largely unknown. The objectives of this study were to estimate the annual incidence and describe the clinical features of PFAPA in a large cohort from western Sweden. METHODS The study retrospectively included children < 18 years of age diagnosed with PFAPA between 2006 and 2017 at three hospitals: NU Hospital Group, Skaraborg Hospital and Queen Silvia Children's Hospital. Patients were identified by searching for relevant diagnostic ICD-10 codes in the comprehensive electronic medical records and data were retrieved by reviewing case records. To estimate incidence, patients with symptom onset from January 1, 2006, to December 31, 2016, were included. Population data for the study area during this period were retrieved from Statistics Sweden. RESULTS In this study, 336 patients with PFAPA were identified. Of these, 156 (46%) were girls and 180 (54%) were boys. Almost 90% of the children with PFAPA (291 patients) experienced their first symptoms before the age of 5 years and fewer than 3% presented at ages above 10 years. Pharyngitis was the most common symptom during febrile episodes, followed by cervical adenitis and aphthous stomatitis. Fourteen percent of the patients displayed atypical features, of which skin rash was the most common. To calculate incidence, 251 patients with symptom onset during the study period were identified. The mean annual incidence was estimated at 0.86/10,000 for children < 18 years of age and 2.6/10,000 for children < 5 years of age. CONCLUSIONS This study adds to the understanding of the epidemiology of PFAPA syndrome by presenting incidence rates based on a large cohort and in different age groups in a population-based setting. It also shows the distribution of age of onset of PFAPA, with a peak in 1-year-olds and waning at older ages. Signs and symptoms of PFAPA syndrome were similar in children with symptom onset before vs. after 5 years of age.
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Affiliation(s)
- Karin Rydenman
- Department of Pediatrics, NU Hospital Group, Uddevalla, Sweden. .,Department of Pediatrics, Institute of Clinical Sciences, University of Gothenburg, Gothenburg, Sweden.
| | - Hanna Fjeld
- grid.459843.70000 0004 0624 0259Department of Medical Internship, NU Hospital Group, Trollhättan, Sweden
| | - Josefine Hätting
- grid.416029.80000 0004 0624 0275Department of Pediatrics, Skaraborg Hospital, Lidköping, Sweden
| | - Stefan Berg
- grid.8761.80000 0000 9919 9582Department of Pediatrics, Institute of Clinical Sciences, University of Gothenburg, Gothenburg, Sweden ,grid.415579.b0000 0004 0622 1824Department of Pediatric Rheumatology and Immunology, Queen Silvia Children’s Hospital, Gothenburg, Sweden
| | - Anders Fasth
- grid.8761.80000 0000 9919 9582Department of Pediatrics, Institute of Clinical Sciences, University of Gothenburg, Gothenburg, Sweden ,grid.415579.b0000 0004 0622 1824Department of Pediatric Rheumatology and Immunology, Queen Silvia Children’s Hospital, Gothenburg, Sweden
| | - Per Wekell
- grid.459843.70000 0004 0624 0259Department of Pediatrics, NU Hospital Group, Uddevalla, Sweden ,grid.8761.80000 0000 9919 9582Department of Pediatrics, Institute of Clinical Sciences, University of Gothenburg, Gothenburg, Sweden
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Randell RL, Stern SM, Van Mater H, Schanberg LE, Lieberman SM, Basiaga ML. Pediatric rheumatologists' perspectives on diagnosis, treatment, and outcomes of Sjögren disease in children and adolescents. Pediatr Rheumatol Online J 2022; 20:79. [PMID: 36064423 PMCID: PMC9446526 DOI: 10.1186/s12969-022-00740-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 08/29/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Sjögren disease in children and adolescents (pedSD) presents differently than adult disease. Diagnosis and classification are controversial, optimal treatment is unknown and outcomes are poorly understood. Here, we describe the current perspectives of pediatric rheumatologists on diagnosis, treatment, and outcomes of pedSD. METHODS A voluntary, 17-question survey was distributed to providers in the Childhood Arthritis and Rheumatology Research Alliance and/or the American College of Rheumatology Childhood Sjögren's Study Group at the 2020 Convergence Virtual Conference. Findings are reported using descriptive statistics and chi-square testing. RESULTS Of 465 eligible providers, 157 (34%) responded with 135 (29%) completing the survey. The majority (85%) saw five or fewer patients with pedSD in the past year. Parotitis, dry eye and/or dry mouth, and constitutional symptoms were among the most specific and common clinical features. Most providers (77%) used clinical judgment guided by adult criteria for diagnosis. The vast majority (86-99%) of survey participants indicated routine use of serologic testing, while salivary gland ultrasound, minor salivary gland biopsy and other diagnostic tests were less often used. The most commonly prescribed systemic immunomodulators were hydroxychloroquine, corticosteroids, methotrexate, rituximab, and mycophenolate. Seven providers reported malignancy in a patient with pedSD, including one death. CONCLUSIONS Pediatric rheumatologists diagnose and treat pedSD; however, most only see a few patients per year and rely on clinical judgment and laboratory testing for diagnosis. Treatment frequently includes systemic immunomodulators and malignancies are reported. More studies are needed to better understand natural history, risk factors, and the impact of interventions on outcomes.
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Affiliation(s)
- Rachel L. Randell
- grid.26009.3d0000 0004 1936 7961Division of Pediatric Rheumatology, Department of Pediatrics, Duke University School of Medicine, MD 2301 Erwin Rd., Box #3212, Durham, NC 27705 USA ,grid.26009.3d0000 0004 1936 7961Duke Clinical Research Institute, Durham, NC USA
| | - Sara M. Stern
- grid.223827.e0000 0001 2193 0096Division of Rheumatology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, Utah USA
| | - Heather Van Mater
- grid.26009.3d0000 0004 1936 7961Division of Pediatric Rheumatology, Department of Pediatrics, Duke University School of Medicine, MD 2301 Erwin Rd., Box #3212, Durham, NC 27705 USA
| | - Laura E. Schanberg
- grid.26009.3d0000 0004 1936 7961Division of Pediatric Rheumatology, Department of Pediatrics, Duke University School of Medicine, MD 2301 Erwin Rd., Box #3212, Durham, NC 27705 USA ,grid.26009.3d0000 0004 1936 7961Duke Clinical Research Institute, Durham, NC USA
| | - Scott M. Lieberman
- grid.214572.70000 0004 1936 8294Division of Rheumatology, Allergy, and Immunology, Stead Family Department of Pediatrics, Carver College of Medicine, University of Iowa, Iowa City, Iowa USA
| | - Matthew L. Basiaga
- grid.66875.3a0000 0004 0459 167XDivision of Pediatric Rheumatology, Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN USA
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Lazea C, Damian L, Vulturar R, Lazar C. PFAPA Syndrome: Clinical, Laboratory and Therapeutic Features in a Single-Centre Cohort. Int J Gen Med 2022; 15:6871-6880. [PMID: 36061962 PMCID: PMC9439650 DOI: 10.2147/ijgm.s373942] [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: 05/15/2022] [Accepted: 07/26/2022] [Indexed: 11/23/2022] Open
Abstract
Objective The aim of this study is to describe a group of Romanian children with periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis (PFAPA) syndrome. Materials This consisted of 39 children diagnosed with PFAPA syndrome according to Thomas’ criteria (eight patients with an age at diagnosis <1 year and 31 patients with an age at diagnosis >1 year). Methods Retrospective analysis of the patients with PFAPA syndrome was focused on clinical features, laboratory findings and therapeutic methods. Comparison between the two groups divided by age at onset was also investigated. Results Median age at onset was 1.58 years, and median age at diagnosis was 2.97 years. The mean interval between episodes was 35.5 days and the mean duration per febrile episode was 4.1 days. The median diagnosis delay was 2.42 years. The patients presented pharyngitis (100%), adenitis (94.8%) and aphthous lesions (66.7%). The frequency of febrile attacks was higher in children with an age at diagnosis under 1 year (p = 0.0287). Younger age was associated with the presence of aphthae. The mean value of C-reactive protein (CRP) was 7.9mg/dl and the mean value of leucocytes was 14,839/mm3. In 95% of patients given oral corticosteroids, remission of symptoms was reported within 24 h. In three patients, tonsillectomy was performed with complete remission of the disease. Conclusion We present a cohort of children with PFAPA syndrome, with clinical and laboratory features similar to those described in the literature. Febrile attacks had a higher incidence in children with younger age at the onset of the disease. The patients had a favorable response to corticosteroids.
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Affiliation(s)
- Cecilia Lazea
- Department Pediatrics I, University of Medicine and Pharmacy “Iuliu Hatieganu”, Cluj-Napoca, Romania
- Correspondence: Cecilia Lazea, Department Pediatrics I, University of Medicine and Pharmacy “Iuliu Hatieganu”, 68, Motilor street, Cluj-Napoca, 400370, Romania, Email ;
| | - Laura Damian
- Department of Rheumatology, County Emergency Clinical Hospital Cluj-Napoca, Centre for Rare Musculoskeletal Autoimmune and Autoinflammatory Diseases, Cluj-Napoca, Romania
| | - Romana Vulturar
- Department of Molecular Sciences, University of Medicine and Pharmacy “Iuliu Hatieganu”, Cluj-Napoca, Romania
| | - Calin Lazar
- Department Pediatrics I, University of Medicine and Pharmacy “Iuliu Hatieganu”, Cluj-Napoca, Romania
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Espin Diaz PC, Singh K, Kher P, Avanthika C, Jhaveri S, Saad Y, Gosh S. Periodic Fever in Children: Etiology and Diagnostic Challenges. Cureus 2022; 14:e27239. [PMID: 36035053 PMCID: PMC9399680 DOI: 10.7759/cureus.27239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/25/2022] [Indexed: 11/05/2022] Open
Abstract
Periodic fever in children is an autoinflammatory illness with an unknown cause. Symptoms include frequent episodes of fever that are followed by an increase in inflammatory markers. A genetic background for periodic fever of unknown origin has been hypothesized, based on its family clustering and parallels to other autoinflammatory illnesses such as familial Mediterranean fever. Genome analysis has been used in studies to look for related gene variations in periodic fever of unknown origin in the pediatric population. Children with periodic fevers might be a diagnostic challenge. After ruling out the most prevalent causes, a wide variety of other possibilities are investigated. Infectious and noninfectious causes of periodic fever in children are discussed in this article. Inflammasomes (intracellular proteins that activate interleukin (IL)-1b and IL-18) and genetic/hereditary variations are thought to be implicated in the pathogenesis of periodic fever. Evaluation and ruling out possible infective or noninfective causes is vital in the diagnosis of periodic fever in children. Investigations demonstrate that there isn't a single gene linked to it, suggesting that it may have a multifactorial or polygenic origin, with an environmental trigger causing inflammasome activation and fever flares. Treatment is usually symptomatic, with drugs such as colchicine and cimetidine having shown promising results in trials. We explored the literature on periodic fever in children for its epidemiology, pathophysiology, the role of various genes and how they influence the disease and associated complications, and its various treatment modalities.
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Okamoto CT, Chaves HL, Schmitz MJ. Periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis syndrome in children: a brief literature review. REVISTA PAULISTA DE PEDIATRIA 2022; 40:e2021087. [PMID: 35703722 PMCID: PMC9190469 DOI: 10.1590/1984-0462/2022/40/2021087in] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 07/06/2021] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To describe clinical, diagnostic and therapeutic characteristics of the periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis (PFAPA) syndrome. DATA SOURCE Literature review in the PubMed database by using specific descriptors to identify all articles published in the English language in the last three years; 38 articles were found. After performing selection of titles and abstract analysis, 13 out of the 38 articles were fully read. Relevant studies found in the references of the reviewed articles were also included. DATA SYNTHESIS The PFAPA syndrome (Periodic Fever, Aphthous Stomatitis, Pharyngitis and cervical Adenitis) is a medical condition grouped among the periodic fever syndromes. The etiology is uncertain, but possibly multifactorial, and its symptoms are accompanied by recurrent febrile episodes although weight and height development are preserved. It is a self-limiting disease of benign course with remission of two to three years without significant interference in the patient's overall development. Treatment consists of three pillars: interruption of febrile episodes, increase in the interval between episodes, and remission. CONCLUSIONS Despite several attempts to establish more sensitive and specific criteria, the diagnosis of PFAPA syndrome is still clinical and reached by exclusion, based on the modified Marshall's criteria. The most common pharmacological options for treatment include prednisolone and betamethasone; colchicine may be used as prophylaxis, and surgical treatment with tonsillectomy can be considered in selected cases.
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Okamoto CT, Chaves HL, Schmitz MJ. Síndrome da febre periódica, estomatite aftosa, faringite e adenite em crianças: uma breve revisão de literatura. REVISTA PAULISTA DE PEDIATRIA 2022. [DOI: 10.1590/1984-0462/2022/40/2021087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
RESUMO Objetivo: Descrever as características clínicas, diagnósticas e de tratamento da síndrome de febre periódica, estomatite aftosa, faringite e adenite (PFAPA). Fontes de dados: Revisão de literatura na base de dados PubMed, feita por meio de descritores específicos para identificar todos os artigos publicados em língua inglesa nos últimos três anos. Dos 38 artigos encontrados, foram encaminhados para leitura integral 13 publicações após seleção de títulos e análise de abstract. Estudos relevantes encontrados nas referências dos artigos revisados também foram incluídos. Síntese dos dados: A PFAPA é traduzida do inglês periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis. Caracterizada por etiologia ainda incerta e possivelmente multifatorial, seus sintomas são acompanhados por episódios recorrentes de febre associados a um desenvolvimento pôndero-estatural preservado. É uma doença autolimitada de curso benigno, com remissão em dois a três anos, sem interferências significativas no desenvolvimento do paciente pediátrico. O tratamento consiste em três pilares: interrupção da crise febril, aumento do intervalo entre crises e remissão. Conclusões: Apesar de várias tentativas de estabelecer critérios atuais mais sensíveis e específicos, o diagnóstico da síndrome PFAPA ainda é clínico e de exclusão com base nos critérios de Marshall modificados. As opções farmacológicas mais utilizadas para o tratamento são a prednisolona e betametasona; colchicina pode ser utilizada como profilaxia e o tratamento cirúrgico com tonsilectomia pode ser considerado em casos selecionados.
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Ohnishi T, Sato S, Uejima Y, Kawano Y, Suganuma E. Periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis syndrome: Clinical characteristics and treatment outcomes - a single center study in Japan. Pediatr Int 2022; 64:e15294. [PMID: 36134651 DOI: 10.1111/ped.15294] [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: 10/08/2021] [Revised: 06/27/2022] [Accepted: 07/07/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND Periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis (PFAPA) syndrome is an autoinflammatory disease occurring in children. Although PFAPA is the most common periodic fever syndrome found in children, there are only a few studies defining the clinical characteristics and the efficacy of treatment strategies among Japanese children. This study aimed to clarify the demographic characteristics and clinical features of patients with PFAPA syndrome and to evaluate treatment efficacy. METHODS We retrospectively reviewed the clinical features of children with PFAPA who visited Saitama Children's Medical Center between January and December 2019. We also evaluated treatment strategies and their efficacy; abortive treatment with corticosteroids, prophylaxis with cimetidine or colchicine, and surgical management with tonsillectomy. RESULTS A total of 100 Japanese children (61% male) with PFAPA were included. Median age of onset was 3 years, median duration of fever episodes was 5 days, and median interval between episodes was 4 weeks. The symptoms (frequencies) were pharyngitis (89%), exudate on tonsils (71%), cervical adenitis (50%), and aphthous stomatitis (49%). Approximately 37% of patients took prednisolone for aborting fever attacks, showing a 100% response; 93% were treated with cimetidine, showing an 79.6% response, and 18% were treated with colchicine, showing a 66.7% response. Only one patient underwent tonsillectomy. CONCLUSIONS Among Japanese children with PFAPA, 28% of them were ≥5 years with a male predominance. Pharyngitis is the most frequent symptom associated with fever. Cimetidine is suitable for initial therapy because of its safety and efficacy.
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Affiliation(s)
- Takuma Ohnishi
- Division of Infectious Diseases and Immunology, Saitama Children's Medical Center, Saitama, Japan
| | - Satoshi Sato
- Division of Infectious Diseases and Immunology, Saitama Children's Medical Center, Saitama, Japan
| | - Yoji Uejima
- Division of Infectious Diseases and Immunology, Saitama Children's Medical Center, Saitama, Japan
| | - Yutaka Kawano
- Division of Infectious Diseases and Immunology, Saitama Children's Medical Center, Saitama, Japan
| | - Eisuke Suganuma
- Division of Infectious Diseases and Immunology, Saitama Children's Medical Center, Saitama, Japan
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12
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Periodic fever, aphthous stomatitis, pharyngitis, and adenitis (PFAPA) syndrome: A review. World J Otorhinolaryngol Head Neck Surg 2021; 7:166-173. [PMID: 34430824 PMCID: PMC8356195 DOI: 10.1016/j.wjorl.2021.05.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 05/20/2021] [Indexed: 01/13/2023] Open
Abstract
Periodic fever, aphthous stomatitis, pharyngitis, and adenitis (PFAPA) syndrome is the most common periodic fever condition in children, with most cases appearing by the age of 5. Although PFAPA is generally a self-limited condition, it can have a major impact on a child's quality of life, as well as that of their family. Recent research has continued to shed light on the genetic and immunologic factors that play a role in the pathogenesis of PFAPA. There also exists significant heterogeneity in treatment strategies, and progress has been made to develop evidence-based management strategies and establish a standard of care. This review will outline current knowledge regarding the pathogenesis of PFAPA, as well as treatment strategies and our clinical experience.
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Welzel T, Ellinghaus M, Wildermuth AL, Deschner N, Benseler SM, Kuemmerle-Deschner JB. Colchicine Effectiveness and Safety in Periodic Fever, Aphthous Stomatitis, Pharyngitis, and Adenitis. Front Pediatr 2021; 9:759664. [PMID: 34900867 PMCID: PMC8655689 DOI: 10.3389/fped.2021.759664] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 10/12/2021] [Indexed: 11/15/2022] Open
Abstract
Introduction: Periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis (PFAPA) is the most common fever syndrome in childhood. High disease activity (DA) dramatically impacts the health-related quality of life. Thus, effective and safe treatment is crucial. Colchicine might be effective, but data are still lacking. Study aimed to assess colchicine safety and effectiveness in PFAPA. Methods: This single center study was conducted between 03/2012 and 05/2021 in PFAPA patients without variants in genetic panel testing aged ≤ 18 years fulfilling Marshall criteria and classification criteria of Gattorno et al. Exclusion criteria were elevated liver enzymes, impaired kidney function, celiac disease, lactose intolerance, previous/ongoing biologics, known colchicine-intolerance. Demographics, clinical characteristics, treatment, DA, colchicine effectiveness and safety were recorded at baseline, first and last visit. Colchicine was started at 0.5-1.0 mg/day. DA was captured by physician (PGA) and patient/parent (PPGA) global assessment on a 10 cm visual analog scale, categorized as mild (<2), moderate (2-4), and high (≥5). Adverse event (AE) monitoring included gastrointestinal symptoms, liver enzyme/creatinine elevation, leukopenia, neutropenia. Primary outcome included response (R; composite of PPGA + PGA decrease ≥2) at last follow-up. Secondary outcomes were partial response (PR; PGA decrease = 1 + PPGA decrease ≥1), no response (NR; unchanged/worsened PGA/PPGA), colchicine safety, flare characteristics. Results: Twenty-seven PFAPA patients were included, 52% were female, median age was 5.8 years (1-10.75), median follow-up time was 13 months. At baseline, median PPGA was high; median PGA moderate. All patients had febrile flares. Median flare frequency was every 4-5 weeks; median duration 5-6 days. Nine patients were pre-treated with corticosteroids, increasing flare frequency in 8/9. Primary Outcome: 17 patients (63%) were responders. Secondary outcomes: PR was achieved in 15%; NR in 22% at last follow-up. DA decreased significantly (p <0.0001). At last follow-up, 52% reported no flares, median flare duration decreased to 1-2 days. At first follow-up, 22% reported mild abdominal pain/diarrhea. Moderate abdominal pain/diarrhea occurred with ≥1 mg/day. Mild asymptomatic liver enzyme elevation or leucopenia were rare; no severe AE or colchicine discontinuation were observed. Conclusion: Colchicine seems to be safe, well-tolerated, and effective in PFAPA patients. It can be considered in children with moderate/high DA even those without corticosteroid-benefit.
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Affiliation(s)
- Tatjana Welzel
- Pediatric Rheumatology and Autoinflammatory Reference Center Tübingen, University Children's Hospital Tübingen, University of Tübingen, Tübingen, Germany.,Pediatric Pharmacology and Pharmacometrics, University Children's Hospital Basel (UKBB), University of Basel, Basel, Switzerland
| | - Maren Ellinghaus
- Pediatric Rheumatology and Autoinflammatory Reference Center Tübingen, University Children's Hospital Tübingen, University of Tübingen, Tübingen, Germany
| | - Anna L Wildermuth
- Pediatric Rheumatology and Autoinflammatory Reference Center Tübingen, University Children's Hospital Tübingen, University of Tübingen, Tübingen, Germany
| | - Norbert Deschner
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital Tübingen, University of Tübingen, Tübingen, Germany
| | - Susanne M Benseler
- Rheumatology, Department of Paediatrics, Alberta Children's Hospital, Cumming School of Medicine, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
| | - Jasmin B Kuemmerle-Deschner
- Pediatric Rheumatology and Autoinflammatory Reference Center Tübingen, University Children's Hospital Tübingen, University of Tübingen, Tübingen, Germany.,Pediatric Pharmacology and Pharmacometrics, University Children's Hospital Basel (UKBB), University of Basel, Basel, Switzerland
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14
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Amarilyo G, Harel L, Abu Ahmad S, Abu Rumi M, Brik R, Hezkelo N, Bar-Yoseph R, Mei-Zahav M, Ohana O, Levinsky Y, Chodick G, Butbul-Aviel Y. Periodic Fever, Aphthous Stomatitis, Pharyngitis, and Adenitis Syndrome - Is It Related to Ethnicity? An Israeli Multicenter Cohort Study. J Pediatr 2020; 227:268-273. [PMID: 32805260 DOI: 10.1016/j.jpeds.2020.08.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 07/22/2020] [Accepted: 08/12/2020] [Indexed: 02/08/2023]
Abstract
OBJECTIVES To evaluate the ethnic distribution of Israeli patients with the syndrome of periodic fever, aphthous stomatitis, pharyngitis, and adenitis (PFAPA). STUDY DESIGN The medical records of patients with PFAPA attending 2 pediatric tertiary medical centers in Israel from March 2014 to March 2019 were retrospectively reviewed. Patients with concomitant familial Mediterranean fever were excluded. Ethnicity was categorized as Mediterranean, non-Mediterranean, and multiethnic. Findings were compared with patients with asthma under treatment at the same medical centers during the same period. RESULTS The cohort included 303 patients with PFAPA and 475 with asthma. Among the patients with PFAPA, 178 (58.7%) were of Mediterranean descent (Sephardic Jews or Israeli Arabs), 96 (33.0%) were multiethnic, and 17 (5.8%) were of non-Mediterranean descent (all Ashkenazi Jews). Patients with PFAPA had a significantly higher likelihood of being of Mediterranean descent than the patients with asthma (58.7% vs 35.8%; P < .0001). The Mediterranean PFAPA subgroup had a significantly earlier disease onset than the non-Mediterranean subgroup (2.75 ± 1.7 vs 3.78 ± 1.9 years, P < .04) and were younger at disease diagnosis (4.77 ± 2.3 vs 6.27 ± 2.9 years, P < .04). CONCLUSIONS PFAPA was significantly more common in patients of Mediterranean than non-Mediterranean descent. Further studies are needed to determine the genetic background of these findings.
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Affiliation(s)
- Gil Amarilyo
- Pediatric Rheumatology Unit, Schneider Children's Medical Center of Israel, Petach Tikva, Israel; Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel.
| | - Liora Harel
- Pediatric Rheumatology Unit, Schneider Children's Medical Center of Israel, Petach Tikva, Israel; Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel
| | - Sabreen Abu Ahmad
- Department of Pediatrics B, Ruth Rappaport Children's Hospital, Rambam Medical Center, Haifa, Israel
| | - Maryam Abu Rumi
- The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Riva Brik
- The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel; Pediatric Rheumatology Service, Ruth Rappaport Children's Hospital, Rambam Medical Center, Haifa, Israel
| | - Nofar Hezkelo
- Department of Medicine F-Recanati, Rabin Medical Center, Beilinson Hospital, Petach Tikva, Israel
| | - Ronen Bar-Yoseph
- The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel; Pediatric Pulmonary Institute, Ruth Rappaport Children's Hospital, Rambam Medical Center, Haifa, Israel
| | - Meir Mei-Zahav
- Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel; Pediatric Pulmonary Unit, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
| | - Orly Ohana
- Department of Pediatrics C, Schneider Children's Medical Center, Petah Tikva, Israel
| | - Yoel Levinsky
- Pediatric Rheumatology Unit, Schneider Children's Medical Center of Israel, Petach Tikva, Israel; Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel
| | - Gabriel Chodick
- Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel; Maccabi Institute for Research & Innovation, Maccabi Healthcare Services, Tel Aviv, Israel
| | - Yonatan Butbul-Aviel
- Department of Pediatrics B, Ruth Rappaport Children's Hospital, Rambam Medical Center, Haifa, Israel; The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel; Pediatric Rheumatology Service, Ruth Rappaport Children's Hospital, Rambam Medical Center, Haifa, Israel
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15
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Amarilyo G, Rothman D, Manthiram K, Edwards KM, Li SC, Marshall GS, Yildirim-Toruner C, Haines K, Ferguson PJ, Lionetti G, Cherian J, Zhao Y, DeLaMora P, Syverson G, Nativ S, Twilt M, Michelow IC, Stepanovskiy Y, Thatayatikom A, Harel L, Akoghlanian S, Tucker L, Marques MC, Srinivasalu H, Propst EJ, Licameli GR, Dedeoglu F, Lapidus S. Consensus treatment plans for periodic fever, aphthous stomatitis, pharyngitis and adenitis syndrome (PFAPA): a framework to evaluate treatment responses from the childhood arthritis and rheumatology research alliance (CARRA) PFAPA work group. Pediatr Rheumatol Online J 2020; 18:31. [PMID: 32293478 PMCID: PMC7157990 DOI: 10.1186/s12969-020-00424-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 04/03/2020] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis (PFAPA) syndrome is the most common periodic fever syndrome in children. There is considerable heterogeneity in management strategies and a lack of evidence-based treatment guidelines. Consensus treatment plans (CTPs) are standardized treatment regimens that are derived based upon best available evidence and current treatment practices that are a way to enable comparative effectiveness studies to identify optimal therapy and are less costly to execute than randomized, double blind placebo controlled trials. The purpose of this project was to develop CTPs and response criteria for PFAPA. METHODS The CARRA PFAPA Working Group is composed of pediatric rheumatologists, infectious disease specialists, allergists/immunologists and otolaryngologists. An extensive literature review was conducted followed by a survey to assess physician practice patterns. This was followed by virtual and in-person meetings between 2014 and 2018. Nominal group technique (NGT) was employed to develop CTPs, as well as inclusion criteria for entry into future treatment studies, and response criteria. Consensus required 80% agreement. RESULTS The PFAPA working group developed CTPs resulting in 4 different treatment arms: 1. Antipyretic, 2. Abortive (corticosteroids), 3. Prophylaxis (colchicine or cimetidine) and 4. Surgical (tonsillectomy). Consensus was obtained among CARRA members for those defining patient characteristics who qualify for participation in the CTP PFAPA study. CONCLUSION The goal is for the CTPs developed by our group to lead to future comparative effectiveness studies that will generate evidence-driven therapeutic guidelines for this periodic inflammatory disease.
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Affiliation(s)
- Gil Amarilyo
- Pediatric Rheumatology Unit, Schneider Children's Medical Center of Israel, Petach Tikva; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | | | - Kalpana Manthiram
- grid.280128.10000 0001 2233 9230National Human Genome Research Institute, National Institutes of Health, Bethesda, MD USA
| | - Kathryn M. Edwards
- grid.152326.10000 0001 2264 7217Vanderbilt University School of Medicine, Nashville, TN USA
| | - Suzanne C. Li
- Joseph M Sanzari Children’s Hospital, Hackensack Meridian Health, Hackensack, NJ USA
| | - Gary S. Marshall
- grid.266623.50000 0001 2113 1622Department of Pediatrics, University of Louisville, Louisville, KY USA
| | | | - Kathleen Haines
- Joseph M Sanzari Children’s Hospital, Hackensack Meridian Health, Hackensack, NJ USA
| | - Polly J. Ferguson
- grid.214572.70000 0004 1936 8294Stead Family Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, IA USA
| | - Geraldina Lionetti
- grid.414016.60000 0004 0433 7727UCSF Benioff Children’s Hospital Oakland, Oakland, CA USA
| | - Julie Cherian
- grid.412695.d0000 0004 0437 5731Stony Brook University Hospital, Stony Brook, NY USA
| | - Yongdong Zhao
- grid.34477.330000000122986657Seattle Children’s Hospital, University of Washington, Seattle, WA USA
| | - Patricia DeLaMora
- grid.5386.8000000041936877XWeill Cornell Medical College, New York, NY USA
| | - Grant Syverson
- grid.30760.320000 0001 2111 8460Medical College of Wisconsin, Wauwatosa, WI USA
| | - Simona Nativ
- grid.429583.1Goryeb Children’s Hospital, Morristown, NJ USA
| | - Marinka Twilt
- grid.22072.350000 0004 1936 7697Rheumatology, Department of Pediatrics, Alberta Children’s Hospital, University of Calgary, Calgary, Alberta Canada
| | - Ian C. Michelow
- grid.40263.330000 0004 1936 9094Alpert Medical School of Brown University, Providence, RI USA
| | - Yuriy Stepanovskiy
- grid.415616.10000 0004 0399 7926Shupyk National Medical Academy of Postgraduate Education, Kyiv, Ukraine
| | - Akaluck Thatayatikom
- grid.15276.370000 0004 1936 8091Department of Pediatrics, University of Florida, Gainesville, FL USA
| | - Liora Harel
- grid.12136.370000 0004 1937 0546Pediatric Rheumatology Unit, Schneider Children’s Medical Center of Israel, Petach Tikva; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shoghik Akoghlanian
- grid.240344.50000 0004 0392 3476Nationwide Children’s Hospital, Columbus, OH USA
| | - Lori Tucker
- grid.414137.40000 0001 0684 7788BC Children’s Hospital, Vancouver, BC Canada
| | - Mariana Correia Marques
- grid.38142.3c000000041936754XBoston Children’s Hospital, Harvard Medical School, Boston, MA USA
| | - Hemalatha Srinivasalu
- grid.239560.b0000 0004 0482 1586Children’s National Medical Center, Washington, DC USA
| | - Evan J. Propst
- grid.17063.330000 0001 2157 2938Hospital for Sick Children, University of Toronto, Toronto, ON Canada
| | - Greg R. Licameli
- grid.38142.3c000000041936754XBoston Children’s Hospital, Harvard Medical School, Boston, MA USA
| | - Fatma Dedeoglu
- grid.38142.3c000000041936754XBoston Children’s Hospital, Harvard Medical School, Boston, MA USA
| | - Sivia Lapidus
- Joseph M Sanzari Children’s Hospital, Hackensack Meridian Health, Hackensack, NJ USA
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Long-term management of patients with PFAPA syndrome. Eur Arch Otorhinolaryngol 2020; 277:2335-2339. [PMID: 32239314 DOI: 10.1007/s00405-020-05943-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 03/23/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVE To evaluate the long-term treatment results of patients with PFAPA syndrome and to determine their need for tonsillectomy. MATERIALS AND METHODS The clinical characteristics, treatments and long-term results of 16 patients admitted to the Pediatric and Otorhinolaryngology Clinic between 2015 and 2019 were retrospectively analyzed. RESULTS Twelve male and four female patients were examined between 1.5 and 8 years (mean age 4.8 ± 1.1) (75% male, 25% female). The mean duration of attacks was 4.4 ± 1.4 weeks. Twelve patients recovered completely with single-dose steroid therapy. In the 4-year follow-up of 12 patients who were given a single dose of steroid therapy, there were no relapses. Surgical decisions were made for four patients whose attacks did not pass with steroid treatment. Two patients (75%) underwent adenotonsillectomy, and one patient underwent tonsillectomy While three of these patients did not have an attack again, one patient continued to have an attack every 8 weeks. At the age of 9, his attacks were completely resolved spontaneously. All patients had fever. The most common concomitant symptoms were pharyngitis (94%), cervical adenitis (82%) and aphthous stomatitis (77%). Exudative tonsillitis was present in 25% of the patients. CONCLUSION Medical treatment should be the first treatment option in patients with PFAPA syndrome. Although single-dose steroid treatment is effective in these patients, tonsillectomy is an important treatment option in refractory cases.
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Renko M, Lantto U, Tapiainen T. Towards better diagnostic criteria for periodic fever, aphthous stomatitis, pharyngitis and adenitis syndrome. Acta Paediatr 2019; 108:1385-1392. [PMID: 30901126 DOI: 10.1111/apa.14792] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 03/04/2019] [Accepted: 03/19/2019] [Indexed: 12/13/2022]
Abstract
AIM Periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis (PFAPA) syndrome is the most common cause of a periodic fever in childhood. The exact pathogenesis and the aetiology of PFAPA are still unknown. METHODS We conducted a non-systematic review of published articles about PFAPA syndrome and summarised the evidence for diagnostic criteria and treatment options for PFAPA. RESULTS The first proposed diagnostic criteria for PFAPA, in addition to periodic fever, included aphthous stomatitis, pharyngitis or cervical lymphadenitis in children younger than five years at the beginning of the symptoms. C-reactive protein (CRP) levels and leucocyte counts increase in most patients during episodes. Recent research reveals that tonsillectomy provides an immediate and long-lasting cure for PFAPA, even in the absence of classic criteria of aphthous stomatitis, pharyngitis or cervical adenitis and in children older than five years. CONCLUSION We suggest that PFAPA can be diagnosed in children with at least five regularly occurring fever episodes without any other explanation, even in the absence of aphthous stomatitis, pharyngitis or cervical lymphadenitis and also in children older than five years.
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Affiliation(s)
- Marjo Renko
- Department of Paediatrics University of Eastern Finland and Kuopio University Hospital Kuopio Finland
- PEDEGO Research Unit University of Oulu Oulu Finland
| | - Ulla Lantto
- PEDEGO Research Unit University of Oulu Oulu Finland
- Department of Otorhinolaryngology Oulu University Hospital Oulu Finland
| | - Terhi Tapiainen
- PEDEGO Research Unit University of Oulu Oulu Finland
- Department of Children and Adolescents Oulu University Hospital Oulu Finland
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Performance of recently proposed periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis (PFAPA) syndrome criteria in a region endemic for familial Mediterranean fever. Rheumatol Int 2019; 40:91-96. [PMID: 31346686 DOI: 10.1007/s00296-019-04362-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 06/28/2019] [Indexed: 10/26/2022]
Abstract
The periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis (PFAPA) syndrome is an auto-inflammatory condition characterized by recurrent episodes of fever accompanied by aphthosis, cervical adenitis, and pharyngitis. Diagnosis of PFAPA could be challenging due to clinic overlap with familial Mediterranean fever (FMF). An international consensus has been established recently, to define a new set of classification criteria for PFAPA syndrome. We aimed to evaluate the performance of recently proposed PFAPA criteria, to assess their utility in FMF regions. Patients diagnosed with PFAPA syndrome, FMF, and juvenile idiopathic arthritis (JIA) were included. Two investigators blindly evaluated all of patients for the newly proposed PFAPA criteria. A total of 542 patients (322 with PFAPA syndrome, 118 FMF and 102 JIA) were evaluated. Mean age of patients was 6.6 ± 2.81, 12.75 ± 3.9, and 12.42 ± 4.8 years for PFAPA, FMF, and JIA, respectively. We found quite high sensitivity (89.7%) but insufficient specificity of newly proposed PFAPA criteria (69.5%). When applied to control patients separately, specificity was found to be 61% and 79.4% for FMF and JIA patients, respectively. Positive predictive value was 81%, while negative predictive value was 82%. Recently proposed PFAPA criteria have satisfactory sensitivity, but its specificity is still under expectation. There is a need for a distinctive criterion between PFAPA syndrome and FMF, in FMF endemic regions, e.g., cryptic tonsillitis rapidly responsive to single dose of glucocorticoids. Further studies with higher patients' number in different regions are needed.
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Ardoin SP, Daly RP, Merzoug L, Tse K, Ardalan K, Arkin L, Knight A, Rubinstein T, Ruth N, Wenderfer SE, Hersh AO. Research priorities in childhood-onset lupus: results of a multidisciplinary prioritization exercise. Pediatr Rheumatol Online J 2019; 17:32. [PMID: 31262324 PMCID: PMC6600895 DOI: 10.1186/s12969-019-0327-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 05/07/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Childhood-onset systemic erythematosus lupus (cSLE) is characterized by more severe disease, widespread organ involvement and higher mortality compared to adult-onset SLE. However, cSLE is largely underfunded to carry out necessary research to advance the field. Few commonly used SLE medications have been studied in children, and important knowledge gaps exist concerning epidemiology, genetics, pathophysiology and optimal treatments for cSLE. METHODS In order to assess highest cSLE research priority areas, the Lupus Foundation of America (LFA) and Childhood Arthritis and Rheumatology Research Alliance (CARRA) administered a cSLE research prioritization survey to pediatric rheumatologists, dermatologists and nephrologists with expertise in lupus. Members of LFA and CARRA's SLE Committee identified a list of cSLE research domains and developed a 17-item tiered, web-based survey asking respondents to categorize the research domains into high, medium, or low priority areas. For domains identified as high priority, respondents ranked research topics within that category. For example, for the domain of nephritis, respondents ranked importance of: epidemiology, biomarkers, long-term outcomes, quality improvement, etc. The survey was distributed to members of CARRA, Midwestern Pediatric Nephrology Consortium (MWPNC) and Pediatric Dermatology Research Alliance (PeDRA) Connective Tissue Disease group. RESULTS The overall response rate was 256/752 (34%). The highest prioritized research domains were: nephritis, clinical trials, biomarkers, neuropsychiatric disease and refractory skin disease. Notably, nephritis, clinical trials and biomarkers were ranked in the top five by all groups. Within each research domain, all groups showed agreement in identifying the following as important focus areas: determining best treatments, biomarkers/pathophysiology, drug discovery/novel treatments, understanding long term outcomes, and refining provider reported quality measures. CONCLUSION This survey identified the highest cSLE research priorities among leading rheumatology, dermatology and nephrology clinicians and investigators engaged in care of children with lupus. There is a strong need for multidisciplinary collaboration moving forward, which was indicated as highly important among stakeholders involved in the survey. These survey results should be used as a roadmap to guide funding and specific research programs in cSLE to address urgent, unmet needs among this population.
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Affiliation(s)
- Stacy P. Ardoin
- 0000 0004 0392 3476grid.240344.5Division of Pediatric Rheumatology, Nationwide Children’s Hospital, 700 Children’s Drive, Columbus, OH 43205 USA
| | - R Paola Daly
- 0000 0004 0616 4647grid.429277.dLupus Foundation of America, Washington, DC USA
| | - Lyna Merzoug
- 0000 0004 0616 4647grid.429277.dLupus Foundation of America, Washington, DC USA
| | - Karin Tse
- 0000 0004 0616 4647grid.429277.dLupus Foundation of America, Washington, DC USA
| | - Kaveh Ardalan
- 0000 0004 0388 2248grid.413808.6Ann & Robert H. Lurie Children’s Hospital, Chicago, IL USA
| | - Lisa Arkin
- 0000 0001 0701 8607grid.28803.31University of Wisconsin, Madison, WI USA
| | | | - Tamar Rubinstein
- 0000 0004 0566 7955grid.414114.5Children’s Hospital at Montefiore, Bronx, NY USA
| | - Natasha Ruth
- 0000 0001 2189 3475grid.259828.cMedical University of South Carolina, Charleston, SC USA
| | - Scott E. Wenderfer
- 0000 0001 2200 2638grid.416975.8Texas Children’s Hospital, Houston, TX USA
| | - Aimee O. Hersh
- 0000 0001 2193 0096grid.223827.eUniversity of Utah, Salt Lake City, UT USA
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Batu ED. Periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis (PFAPA) syndrome: main features and an algorithm for clinical practice. Rheumatol Int 2019; 39:957-970. [PMID: 30798384 DOI: 10.1007/s00296-019-04257-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 02/14/2019] [Indexed: 01/20/2023]
Abstract
Periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis (PFAPA) syndrome is a recurrent fever syndrome of early childhood with increasing number of adult-onset cases. Although it is a self-limited disease, it may negatively affect the quality of life. The aim of this review is to present a detailed analysis of PFAPA syndrome and an algorithm for diagnosis, therapeutic options, and evaluation of outcome. A comprehensive literature search was conducted through the Cochrane Library, Scopus, and MEDLINE/PubMed databases. The main topics covered are the epidemiology, clinical manifestations, diagnosis, differential diagnosis, etiopathogenesis, genetics, management, disease course and prognosis, disease in adults, unsolved issues, and unmet needs in PFAPA. The diagnosis of PFAPA is mainly based on clinical classification criteria. The most relevant hypothesis for pathogenesis is that dysregulated immune system in a genetically predisposed individual responds to a yet unidentified trigger in an exaggerated way. The pedigree analyses suggest a genetic background for the disease with an autosomal dominant pattern of inheritance. For management, single-dose corticosteroids during attacks and tonsillectomy remain the most effective therapies, while colchicine is a promising option to decrease attack frequency. There remain unsolved issues in PFAPA such as the exact etiopathogenesis and genetic background, the reason why the inflammation is restricted to the oropharyngeal lymphoid tissue, reasons for clock-work regularity of attacks, and self-limited disease course. There is need for a valid diagnostic criteria set with a high performance for both children and adults and consensus on management of PFAPA.
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Affiliation(s)
- Ezgi Deniz Batu
- Division of Rheumatology, Department of Pediatrics, Ankara Training and Research Hospital, University of Health Sciences, 06100, Ankara, Turkey.
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Costagliola G, Maiorino G, Consolini R. Periodic Fever, Aphthous Stomatitis, Pharyngitis, and Cervical Adenitis Syndrome (PFAPA): A Clinical Challenge for Primary Care Physicians and Rheumatologists. Front Pediatr 2019; 7:277. [PMID: 31334209 PMCID: PMC6624732 DOI: 10.3389/fped.2019.00277] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Accepted: 06/20/2019] [Indexed: 01/31/2023] Open
Abstract
Objective: To show the different physician's approaches and the difficulties in the diagnosis and management of the Periodic Fever, Aphthous Stomatitis, Pharyngitis, and Cervical Adenitis (PFAPA) syndrome, and to quantify the impact of the disease on the families and on the healthcare system. Study Design: Retrospective analysis on 40 patients diagnosed with PFAPA, focusing on the clinical phenotype, the process of diagnosis, and the management of the febrile episodes. The direct and indirect annual economic cost related to PFAPA in the period preceding the diagnosis were also investigated. Results: The median age of patients at disease onset was 1.75 years and the median time to diagnosis was 14.5 months. During the diagnostic process, only 45% of our patients was firstly addressed to rheumatologic consultation, 32.5% to otorinolaryngologist (ORL), and 22.5% to immunologic consultation. Genetic investigations were performed in the 20% of the cohort. Overall population experienced a median of 60 annual days of fever and, during the critical phase, 40% of patients received more than 5 cycles of antibiotic/year. Seventy five percent required laboratory investigations, 18 (45%) needed to access to emergency department and 15 (37.5%) have been hospitalized. The annual mean direct cost was 1659.5 € for each patient, and the estimated mean indirect cost was 5811.6 € for each parent. Conclusion: Despite a benign clinical course, PFAPA syndrome is associated with a significant impact on the patients, their families and the national healthcare system. PFAPA patients require a large number of medical examinations and laboratory or instrumental investigations during the diagnostic approach and often receive inappropriate treatments. Therefore, we suggest the necessity of a greater awareness and knowledge of the disease among primary care physicians and, finally, of the adoption of more specific diagnostic criteria.
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Affiliation(s)
- Giorgio Costagliola
- Laboratory of Immunology, Division of Pediatrics, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Giuseppe Maiorino
- Laboratory of Immunology, Division of Pediatrics, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Rita Consolini
- Laboratory of Immunology, Division of Pediatrics, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
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Gaggiano C, Rigante D, Sota J, Grosso S, Cantarini L. Treatment options for periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis (PFAPA) syndrome in children and adults: a narrative review. Clin Rheumatol 2018; 38:11-17. [PMID: 30488366 DOI: 10.1007/s10067-018-4361-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 11/05/2018] [Indexed: 12/20/2022]
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Kettunen S, Lantto U, Koivunen P, Tapiainen T, Uhari M, Renko M. Risk factors for periodic fever, aphthous stomatitis, pharyngitis, and adenitis (PFAPA) syndrome: a case-control study. Eur J Pediatr 2018; 177:1201-1206. [PMID: 29799086 DOI: 10.1007/s00431-018-3175-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 05/04/2018] [Accepted: 05/14/2018] [Indexed: 10/16/2022]
Abstract
UNLABELLED The etiology and pathogenesis of periodic fever, aphthous stomatitis, pharyngitis, and adenitis (PFAPA) syndrome are unclear. We performed a case-control study to evaluate potential environmental or lifestyle factors associated with PFAPA morbidity. We enrolled 119 patients with PFAPA syndrome who had undergone tonsillectomy in Oulu University Hospital between 1987 and 2007. We recruited 230 controls, matched for sex, birth date, and place from the database of the Population Register Center of Finland. All the patients and controls completed a questionnaire regarding exposure to environmental triggers during early childhood. Maternal smoking was more common among PFAPA syndrome patients than controls (23 vs. 14%; P = 0.005). PFAPA patients had lower breastfeeding rates than controls (94 vs. 99%; P = 0.006). No other environmental factors were associated with PFAPA syndrome, except having an aquarium at home (P = 0.007). The patient group also used natural or herbal medicines more often than the controls (P = 0.01). CONCLUSION Maternal smoking and lack of breastfeeding, known risk factors for common childhood infections, were more common in patients with PFAPA syndrome than in matched controls. Environmental factors may be important in the pathogenesis of PFAPA syndrome and should be evaluated in future studies. What is Known: • The pathogenesis and genetics of periodic fever, aphthous stomatitis, pharyngitis, and adenitis (PFAPA) syndrome remain unsolved. • PFAPA syndrome has been shown to cluster in families. What is New: • Maternal smoking and lack of breastfeeding are more common in patients with PFAPA syndrome than in the controls. • Environmental risk factors may be important in the pathogenesis of the syndrome.
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Affiliation(s)
- Sallamaaria Kettunen
- PEDEGO Research Unit, Medical Research Centre, University of Oulu, BOX 5000, FI-90014, Oulu, Finland.,Department of Children and Adolescents, Oulu University Hospital, Oulu, Finland
| | - Ulla Lantto
- PEDEGO Research Unit, Medical Research Centre, University of Oulu, BOX 5000, FI-90014, Oulu, Finland.,Department of Otorhinolaryngology, Oulu University Hospital, Oulu, Finland
| | - Petri Koivunen
- Department of Otorhinolaryngology, Oulu University Hospital, Oulu, Finland
| | - Terhi Tapiainen
- PEDEGO Research Unit, Medical Research Centre, University of Oulu, BOX 5000, FI-90014, Oulu, Finland.,Department of Children and Adolescents, Oulu University Hospital, Oulu, Finland
| | - Matti Uhari
- PEDEGO Research Unit, Medical Research Centre, University of Oulu, BOX 5000, FI-90014, Oulu, Finland.,Department of Children and Adolescents, Oulu University Hospital, Oulu, Finland
| | - Marjo Renko
- PEDEGO Research Unit, Medical Research Centre, University of Oulu, BOX 5000, FI-90014, Oulu, Finland. .,Tampere Centre for Child Health Research, University of Tampere and Tampere University Hospital, Tampere, Finland.
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Vanoni F, Federici S, Antón J, Barron KS, Brogan P, De Benedetti F, Dedeoglu F, Demirkaya E, Hentgen V, Kallinich T, Laxer R, Russo R, Toplak N, Uziel Y, Martini A, Ruperto N, Gattorno M, Hofer M. An international delphi survey for the definition of the variables for the development of new classification criteria for periodic fever aphtous stomatitis pharingitis cervical adenitis (PFAPA). Pediatr Rheumatol Online J 2018; 16:27. [PMID: 29669569 PMCID: PMC5907175 DOI: 10.1186/s12969-018-0246-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 04/11/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Diagnosis of Periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis (PFAPA) is currently based on a set of criteria proposed in 1999 modified from Marshall's criteria. Nevertheless no validated evidence based set of classification criteria for PFAPA has been established so far. The aim of this study was to identify candidate classification criteria PFAPA syndrome using international consensus formation through a Delphi questionnaire survey. METHODS A first open-ended questionnaire was sent to adult and pediatric clinicians/researchers, asking to identify the variables thought most likely to be helpful and relevant for the diagnosis of PFAPA. In a second survey, respondents were asked to select, from the list of variables coming from the first survey, the 10 features that they felt were most important, and to rank them in descending order from most important to least important. RESULTS The response rate to the first and second Delphi was respectively 109/124 (88%) and 141/162 (87%). The number of participants that completed the first and second Delphi was 69/124 (56%) and 110/162 (68%). From the first Delphi we obtained a list of 92 variables, of which 62 were selected in the second Delphi. Variables reaching the top five position of the rank were regular periodicity, aphthous stomatitis, response to corticosteroids, cervical adenitis, and well-being between flares. CONCLUSION Our process led to identification of features that were felt to be the most important as candidate classification criteria for PFAPA by a large sample of international rheumatologists. The performance of these items will be tested further in the next phase of the study, through analysis of real patient data.
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Affiliation(s)
- Federica Vanoni
- Department of Pediatrics, Ospedale San Giovanni, 6500, Bellinzona, Switzerland. .,Unité Romande d'Immuno-rhumatologie Pédiatrique, CHUV, University of Lausanne, Lausanne, and HUG, Geneva, Switzerland.
| | - Silvia Federici
- 0000 0004 1760 0109grid.419504.dIstituto Giannina Gaslini, Clinica Pediatrica e Reumatologia, PRINTO, Genoa, Italy
| | - Jordi Antón
- Pediatric Rheumatology, Hospital Sant Joan de Déu, Universitat de Barcelona, Esplugues de Llobregat, Barcelona Spain
| | - Karyl S. Barron
- 0000 0001 2164 9667grid.419681.3NIH-NIAID, Division of Intramural Research, Bethesda, MD USA
| | - Paul Brogan
- Department of Infection, Inflammation and Rheumatology, Great Ormond St Hospital, London, UK
| | - Fabrizio De Benedetti
- 0000 0001 0727 6809grid.414125.7IRCCS Ospedale Pediatrico Bambino Gesù, Division of Rheumatology, Rome, Italy
| | - Fatma Dedeoglu
- 0000 0004 0378 8438grid.2515.3Division of Immunology, Rheumatology Program, Harvard Medical School Boston, Boston Children’s Hospital, Boston, MA USA
| | - Erkan Demirkaya
- 0000 0004 1936 8884grid.39381.30Division of Paediatric Rheumatology, Western University and Children’s Hospital LHSC, London, ON Canada
| | - Veronique Hentgen
- Hôpital A Mignot - Centre Hospitalier de Versailles, CEREMAIA, French reference center for autoinflammatory diseases and inflammatory amyloidosis, Le Chesnay (Paris), France
| | - Tilmann Kallinich
- 0000 0001 2218 4662grid.6363.0Pediatric Pneumology and Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Ronald Laxer
- 0000 0004 0473 9646grid.42327.30Departments of Pediatrics and Medicine, University of Toronto and The Hospital for Sick Children, Toronto, ON Canada
| | - Ricardo Russo
- 0000 0001 0695 6255grid.414531.6Servicio de Inmunología y Reumatología, Hospital de Pediatría Juan P. Garrahan, Buenos Aires, Argentina
| | - Natasa Toplak
- Department of Allergology, Rheumatology and Clinical Immunology, University Children’s Hospital, University Medical Center Ljubljana, Ljubljana, Slovenia
| | - Yosef Uziel
- 0000 0004 1937 0546grid.12136.37Meir Medical Centre, Pediatric Rheumatology Unit, Department of Pediatrics, Kfar Saba and Sackler School of Medicine, Tel Aviv University, Tel Aviv-Yafo, Israel
| | - Alberto Martini
- 0000 0004 1760 0109grid.419504.dIstituto Giannina Gaslini, Direzione Scientifica, Genoa, Italy
| | - Nicolino Ruperto
- 0000 0004 1760 0109grid.419504.dIstituto Giannina Gaslini, Direzione Scientifica, Genoa, Italy
| | - Marco Gattorno
- 0000 0004 1760 0109grid.419504.dIstituto Giannina Gaslini, Clinica Pediatrica e Reumatologia, PRINTO, Genoa, Italy
| | - Michael Hofer
- 0000 0001 0721 9812grid.150338.cUnité Romande d’Immuno-rhumatologie Pédiatrique, CHUV, University of Lausanne, Lausanne, and HUG, Geneva, Switzerland
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Unraveling the pathogenesis of periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis through genetic, immunologic, and microbiologic discoveries: an update. Curr Opin Rheumatol 2017; 29:493-499. [DOI: 10.1097/bor.0000000000000418] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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