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Hasegawa A, Abe R. Stevens-Johnson syndrome and toxic epidermal necrolysis: Updates in pathophysiology and management. Chin Med J (Engl) 2024:00029330-990000000-01219. [PMID: 39238098 DOI: 10.1097/cm9.0000000000003250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Indexed: 09/07/2024] Open
Abstract
ABSTRACT Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are life-threatening conditions characterized by extensive detachment of the epidermis and mucous membranes. These severe disorders carry a high mortality rate, and their pathogenesis remains largely unclear. Furthermore, optimal therapeutic strategies for SJS/TEN remain a subject of ongoing debate. Early diagnosis of SJS/TEN is challenging, and reliable biomarkers for diagnosis or severity prediction have not been firmly established. Certain drugs, such as carbamazepine and allopurinol, have shown a strong association with specific human leukocyte antigen (HLA) types. Recently, the potential benefits of HLA screening prior to administering these drugs to reduce the incidence of SJS/TEN have been explored. Epidermal cell death in SJS/TEN lesions is caused by extensive apoptosis, primarily through the Fas-FasL and perforin/granzyme pathways. Our findings suggest that necroptosis, a form of programmed necrosis, also contributes to epidermal cell death. Annexin A1, released from monocytes, interacts with the formyl peptide receptor 1 to induce necroptosis. Several biomarkers, such as CC chemokine ligand (CCL)-27, interleukin-15, galectin-7, receptor-interacting protein kinases 3 (RIP3), and lipocalin-2, have been identified for diagnostic and prognostic purposes in SJS/TEN. Supportive care is recommended for treating SJS/TEN, but the efficacy of various therapeutic options-including systemic corticosteroids, intravenous immunoglobulin, cyclosporine, and tumor necrosis factor-α antagonists-remains controversial. Recent studies have investigated the potential benefits of tumor necrosis factor-α antagonists. In this review, we discuss recent advances in the understanding and management of SJS/TEN.
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Affiliation(s)
- Akito Hasegawa
- Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
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Gong T, Zhang P, Ruan SF, Xiao Z, Chen W, Lin M, Zhong Q, Luo R, Xu Q, Peng J, Cheng B, Chen F, Chen L, Chung WH, Ji C. APOA4 as a novel predictor of prognosis in Stevens-Johnson syndrome/toxic epidermal necrolysis: A proteomics analysis from two prospective cohorts. J Am Acad Dermatol 2023; 89:45-52. [PMID: 36963506 DOI: 10.1016/j.jaad.2023.02.058] [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: 01/05/2023] [Revised: 02/25/2023] [Accepted: 02/27/2023] [Indexed: 03/26/2023]
Abstract
BACKGROUND Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are rare but life-threatening adverse drug reactions. Conventional systemic therapies are of limited efficacy and often exhibit strong side effects. OBJECTIVE To assess the efficacy and safety of the combination treatment with a tumor necrosis factor-α antagonist adalimumab and delineate the underlying mechanisms. METHODS We evaluated the efficacy and safety of the combination therapy with adalimumab by comparing 2 treatment cohorts of SJS/TEN patients. Patient plasma samples were collected for proteomics analysis. RESULTS The combination therapy with adalimumab significantly shortened the time to mucocutaneous re-epithelization and healing, with reduced side effects caused by corticosteroids. Plasma proteomic profiling showed that apolipoprotein A-IV (APOA4) was one of the most significant differentially expressed proteins. Multivariate regression analysis revealed that APOA4 level was significantly associated with prognosis parameter of SJS/TEN (P = .004), but not with disease severity score (severity-of-illness score for toxic epidermal necrolysis [SCORTEN]) (P = .118). Thus further research will be helpful to effectively incorporate APOA4 into current SCORTEN-driven protocols. LIMITATIONS The cohort size is relatively small. Both cohorts had low overall SCORTEN scores. CONCLUSION Adalimumab in combination with corticosteroids demonstrates significant clinical benefits over corticosteroids alone in SJS/TEN patients. Moreover, APOA4 may serve as a novel prognostic marker of SJS/TEN.
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Affiliation(s)
- Ting Gong
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China; Central Laboratory, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Peng Zhang
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Shi-Fan Ruan
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Zhixun Xiao
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Wen Chen
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Min Lin
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Qingmei Zhong
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Renwei Luo
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Qiuyun Xu
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Jiamei Peng
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Bo Cheng
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Fa Chen
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Lihong Chen
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Wen-Hung Chung
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou, Taipei, and Keelung, Taiwan.
| | - Chao Ji
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China; Key Laboratory of Skin Cancer of Fujian Higher Education Institutions, Fujian Medical University, Fuzhou, Fujian, China.
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Cao J, Zhang X, Xing X, Fan J. Biologic TNF-α Inhibitors for Stevens-Johnson Syndrome, Toxic Epidermal Necrolysis, and TEN-SJS Overlap: A Study-Level and Patient-Level Meta-Analysis. Dermatol Ther (Heidelb) 2023:10.1007/s13555-023-00928-w. [PMID: 37178320 DOI: 10.1007/s13555-023-00928-w] [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: 03/01/2023] [Accepted: 04/13/2023] [Indexed: 05/15/2023] Open
Abstract
INTRODUCTION Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are severe cutaneous adverse reactions with high morbidity and mortality and not clearly established treatment protocol. This meta-analysis aimed to evaluate the efficacy and safety of three biologic TNF-α inhibitors (infliximab, etanercept, adalimumab) in the treatment of SJS, SJS-TEN overlap, and TEN. METHODS Electronic databases were searched for original studies containing human participants diagnosed with SJS/TEN and treated with biologic TNF-α inhibitors. Individual patient data were collected and summarized to provide a comprehensive overview on therapeutic efficacy of different biologic TNF-α inhibitors for SJS, SJS-TEN overlap, and TEN, respectively. Meta-analyses on aggregated study data were conducted using random-effects model. RESULTS Overall, 55 studies with 125 sets of individual patient data were included. Infliximab was used to treat 3 patients with SJS-TEN overlap and 28 patients with TEN, and the actual mortality rate was 33.3% and 17%, respectively. Etanercept was administered to 17 patients with SJS, 9 patients with SJS-TEN overlap, and 64 patients with TEN, and mortality rate was reported to be 0%, 0%, and 12.5%, respectively. For participants with TEN, no significant difference was found in time of reepithelialization, hospitalization time, and mortality rate comparing etanercept with infliximab. More sequelae were reported in patients receiving infliximab than in patients treated with etanercept (39.3% versus 6.4%). Adalimumab was administered to four patients with TEN, and mortality rate was 25%. Meta-analyses on aggregated study data revealed significantly shortened hospitalization time in etanercept compared with non-etanercept groups [weighted mean differences (WMD) -5.30; 95% confidence interval (CI) -8.65 to -1.96]. Etanercept was associated with a survival benefit for patients when compared with non-etanercept treatment, however, the analysis was not statistically significant (odds ratio 0.55; 95% CI 0.23-1.33). CONCLUSIONS On the basis of the current findings, etanercept is currently the most promising biologic therapy for SJS/TEN. Further evaluation in prospective studies is required to confirm its efficacy and safety.
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Affiliation(s)
- Jiali Cao
- Department of Dermatology, Beijing Chaoyang Hospital, Capital Medical University, No. 8 Gongti South Road, Chaoyang District, Beijing, 100020, China.
| | - Xuan Zhang
- Department of Dermatology, Beijing Chaoyang Hospital, Capital Medical University, No. 8 Gongti South Road, Chaoyang District, Beijing, 100020, China
| | - Xinzhu Xing
- Department of Dermatology, Beijing Chaoyang Hospital, Capital Medical University, No. 8 Gongti South Road, Chaoyang District, Beijing, 100020, China
| | - Jie Fan
- Medical Department, Shunyi Maternal and Children's Hospital of Beijing Children's Hospital, Beijing, 101300, China
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Surowiecka A, Barańska-Rybak W, Strużyna J. Multidisciplinary Treatment in Toxic Epidermal Necrolysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:2217. [PMID: 36767584 PMCID: PMC9916139 DOI: 10.3390/ijerph20032217] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
Toxic epidermal necrolysis, Leyll's syndrome (TEN), is a rare mucocutaneous blistering disease burdened with high mortality rates. The diagnosis of TEN is based on clinical symptoms and histopathological findings. In approximately 90% of cases, it is a severe adverse reaction to drugs. In TEN, not only is the skin affected, but also mucosa and organs' epithelium. There are no unequivocal recommendations in regard to systemic and topical treatment of the patients. The aim of this paper is to review available literature and propose unified protocols to be discussed. Early management and multidisciplinary treatment are necessary to improve patients' outcome. Treatment of patients with TEN suspicions should be initiated with early drug withdrawal. TEN patients, like patients with burns, require intensive care and multidisciplinary management. Each patient with TEN should be provided with adequate fluid resuscitation, respiratory support, nutritional treatment, pain control, infection prophylaxis, anticoagulant therapy, and gastric ulcer prophylaxis. The key to local treatment of patients with TEN is the use of nonadherent dressings that do not damage the epidermis during the change. The aim of the systemic treatment is purification of the blood stream from the causative agent. The most efficient way to clarify serum of TEN patients' is the combination of plasmapheresis and IVIG. Immunomodulatory therapy can reduce the mortality five times in comparison with the patients with immunosuppression or lack of full protocol.
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Affiliation(s)
- Agnieszka Surowiecka
- East Center of Burns Treatment and Reconstructive Surgery, Medical University of Lublin, 20-059 Lublin, Poland
| | - Wioletta Barańska-Rybak
- Department of Dermatology, Venereology and Allergology, Faculty of Medicine, Medical University of Gdańsk, 80-210 Gdańsk, Poland
| | - Jerzy Strużyna
- East Center of Burns Treatment and Reconstructive Surgery, Medical University of Lublin, 20-059 Lublin, Poland
- Department of Plastic Surgery, Reconstructive Surgery and Burn Treatment, Medical University of Lublin, 20-059 Lublin, Poland
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A Review of the Systemic Treatment of Stevens–Johnson Syndrome and Toxic Epidermal Necrolysis. Biomedicines 2022; 10:biomedicines10092105. [PMID: 36140207 PMCID: PMC9495335 DOI: 10.3390/biomedicines10092105] [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: 07/10/2022] [Revised: 08/10/2022] [Accepted: 08/24/2022] [Indexed: 11/28/2022] Open
Abstract
Stevens–Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are uncommon but life-threatening diseases mostly caused by drugs. Although various systemic immunomodulating agents have been used, their therapeutic efficacy has been inconsistent. This study aimed to provide an evidence-based review of systemic immunomodulating treatments for SJS/TEN. We reviewed 13 systematic review and meta-analysis articles published in the last 10 years. The use of systemic corticosteroids and IVIg is still controversial. An increasing number of studies have suggested the effectiveness of cyclosporine and biologic anti-TNF-α in recent years. There were also some promising results of combination treatments. Further large-scale randomized controlled trials are required to provide more definitive evidence of the effectiveness of these treatments. The pathogenesis of SJS/TEN has been elucidated in recent years and advances in the understanding of SJS/TEN may inspire the discovery of potential therapeutic targets.
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Singh R, Nutan F. The Successful Management of SJS/TEN secondary to enfortumab vedotin Therapy. CURRENT PROBLEMS IN CANCER: CASE REPORTS 2022. [DOI: 10.1016/j.cpccr.2022.100162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Direct Injection of 5-Fluorouracil Improves Outcomes in Cicatrizing Conjunctival Disorders Secondary to Systemic Disease. Ophthalmic Plast Reconstr Surg 2021; 37:145-153. [PMID: 32427724 DOI: 10.1097/iop.0000000000001717] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
PURPOSE Conjunctival cicatrizing conditions are vision threatening, with poor outcomes despite aggressive systemic therapy. This study tests the utility of serial injections of 5-fluorouracil (5-FU) into the fornices to treat conjunctival scarring in patients with ocular cicatricial pemphigoid or Stevens-Johnson syndrome/toxic epidermal necrolysis. METHODS Retrospective cohort study. Fisher exact test and multivariable logistic regression analyses were used to compare clinical outcomes of patients who were administered 5-FU injections versus patients who were not injected. Model fit was examined for multivariable regression. RESULTS One hundred twelve eyes (56 patients) met the inclusion criteria. Thirty-eight eyes (34%) had Stevens-Johnson syndrome/toxic epidermal necrolysis, and 74 eyes (66%) were diagnosed with ocular cicatricial pemphigoid. Twenty-five eyes received ≥1 injection of 5-FU. Sixteen eyes received 1-4 injections, while 9 received ≥5. Median follow-up until last encounter was 18 months. Analysis of each disease entity alone and in combination revealed that 5-FU injections were associated with improvement in final visual acuity, corneal scarring, trichiasis, need for/number of mucous membrane graft surgeries, and severity of symblephara. CONCLUSIONS Serial injection of 5-FU in the affected fornices is a promising treatment for severe vision-threatening conjunctival scarring from ocular cicatricial pemphigoid and Stevens-Johnson syndrome/toxic epidermal necrolysis. Given the excellent safety profile of 5-FU around the eye, the solid biologic foundation for using 5-FU in this setting, and the severe risk of vision loss from these disorders, the authors suggest that serial 5-FU injections be adopted as therapy for conjunctival scarring from ocular cicatricial pemphigoid or Stevens-Johnson syndrome/toxic epidermal necrolysis despite the limitations of this retrospective study.
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Sachdeva M, Maliyar K, Ponzo MG. A Systematic Review of Efficacy and Safety of Monotherapy and Combination Therapy With Biologic for Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis. J Cutan Med Surg 2021; 25:598-615. [PMID: 33631950 DOI: 10.1177/1203475421993779] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
BACKGROUND Biologic drugs have the potential to halt the progression of Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) by decreasing concentrations of tumor necrosis factor-α, a cytokine implicated in epithelial cell death. The objective of this systematic review is to investigate the efficacy and safety of biologic monotherapy and combination therapy for SJS/TEN. METHODS MEDLINE and EMBASE in OVID were searched on October 28, 2020. Inclusion criteria were original studies containing human participants diagnosed with SJS/TEN and treated with biologics. Studies were excluded if they were literature reviews, systematic reviews, letters to the editor, or conference abstracts. RESULTS The 38 articles reviewed included 27 (71.1%) case reports, 6 (15.8%) case series, 3 (7.9%) retrospective reviews, and 2 (5.3%) RCTs. The age range of the included studies was 2 to 85 years, the mean age was 46.4 years. The mean body surface (BSA) across the 38 included articles was 31.0%. The average actual mortality reported within the 38 included articles was 9.2%. Both biologic monotherapy and combination therapy were associated with improved outcomes in SJS/TEN. Furthermore, anti TNF-alpha therapy, specifically etanercept, showed improved outcomes as monotherapy. CONCLUSIONS Overall, reviewed studies presented a strong case for biologic treatment, both monotherapy and combination use, in SJS/TEN treatment. Based on the number of fatal adverse events observed, biologic monotherapy may be safer compared to combination therapy. Further research with a larger sample size and a randomized control trial design is required.
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Affiliation(s)
- Muskaan Sachdeva
- 7938 University of Toronto, Faculty of Medicine, Toronto, Ontario
| | - Khalad Maliyar
- 7938 University of Toronto, Faculty of Medicine, Toronto, Ontario
| | - Marisa G Ponzo
- 8166 Department of Dermatology and Skin Science, University of British Columbia; Division of Dermatology, St. Paul's Hospital, Vancouver, British Columbia
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Gaitanis G, Bassukas ID. Combination therapy for toxic epidermal necrolysis: It is time for anti-TNFa biologics comparison. Burns 2020; 46:244-245. [DOI: 10.1016/j.burns.2019.10.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 10/04/2019] [Indexed: 10/25/2022]
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Colonic Involvement of Stevens-Johnson Syndrome/Toxic Epidermal Necrolysis: A Rare Cause of Gastrointestinal Bleeding. ACG Case Rep J 2019; 6:e00242. [PMID: 31832469 PMCID: PMC6855542 DOI: 10.14309/crj.0000000000000242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 09/11/2019] [Indexed: 01/18/2023] Open
Abstract
Stevens-Johnson syndrome (SJS)/toxic epidermal necrolysis (TEN) represents a spectrum of rare but severe mucocutaneous drug reactions. Gastrointestinal involvement of SJS/TEN is associated with high morbidity and mortality and often presents 2-3 weeks after the initial appearance of skin lesions. There are no evidence-based treatment algorithms for the management of SJS/TEN. We report a case of life-threatening gastrointestinal bleeding from colonic involvement of SJS/TEN and discuss potential therapeutic options.
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Rutnin S, Chanprapaph K. Vesiculobullous diseases in relation to lupus erythematosus. Clin Cosmet Investig Dermatol 2019; 12:653-667. [PMID: 31564947 PMCID: PMC6732903 DOI: 10.2147/ccid.s220906] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 08/13/2019] [Indexed: 12/13/2022]
Abstract
Vesiculobullous lesions in lupus erythematosus (LE) are a rare cutaneous manifestation of cutaneous and/or systemic LE with variable presentation. While the minor forms of LE-associated vesiculobullous disease may cause disfigurement and discomfort, the severe forms can present with hyperacute reaction and life-threatening consequences. Specific LE and aspecific cutaneous LE are defined by the presence or absence of interface change on histopathology that can be applied to vesiculobullous diseases in relation to LE. However, the diagnosis of LE-associated vesiculobullous diseases remains difficult, due to the poorly defined nosology and the similarities in clinical and immunohistopathological features among them. Herein, we thoroughly review the topic of vesiculobullous skin disorders that can be encountered in LE patients and organize them into four groups: LE-specific and aspecific vesiculobullous diseases, LE-related autoimmune bullous diseases, and LE in association to non-autoimmune conditions. We sought to provide an updated overview highlighting the pathogenesis, clinical, histological, and immunopathological features, laboratory findings, and treatments and prognosis among vesiculobullous conditions in LE.
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Affiliation(s)
- Suthinee Rutnin
- Division of Dermatology, Department of Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Kumutnart Chanprapaph
- Division of Dermatology, Department of Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
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Pham CH, Gillenwater TJ, Nagengast E, McCullough MC, Peng DH, Garner WL. Combination therapy: Etanercept and intravenous immunoglobulin for the acute treatment of Stevens-Johnson syndrome/toxic epidermal necrolysis. Burns 2019; 45:1634-1638. [PMID: 31466921 DOI: 10.1016/j.burns.2018.12.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 12/12/2018] [Accepted: 12/22/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN) is an autoimmune condition with significant morbidity and mortality. METHODS A retrospective review was performed at a single institution. All patients admitted to the LAC+USC burn unit from May 1st 2015-January 1st 2018 with a histologic diagnosis of SJS/TEN were reviewed. Patient characteristics and outcomes were recorded. These outcomes were compared to our previously published cohort. RESULTS Thirteen total consecutive SJS/TEN patients were treated with etanercept. Compared to non-etanercept treated patients, etanercept-treated patients did not experience a significant difference in mortality (15.4% vs. 10%, P=0.58), ICU days (6.9 vs. 15.1, P=0.08), length-of-stay (9.8 vs 16.4, P=0.11), or infections (38.5% vs. 57.5%, P=0.58). The standardized mortality ratio in etanercept-treated patients was 0.44 (95% CI, 0.21, 0.65). In general, etanercept-treated patients had higher SCORTENs (3 vs. 2, P=0.03) and longer delays to presentation (5.2 vs. 2.7 days, P<0.01). CONCLUSIONS Etanercept can be considered in the treatment of SJS/TEN patients in addition to IVIg, and supportive care in a burn unit.
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Affiliation(s)
- Christopher H Pham
- Keck School of Medicine, University of Southern California, 1975 Zonal Avenue, Los Angeles, CA 90033, United States; Division of Plastic Surgery, Department of Surgery, Keck School of Medicine, University of Southern California, 1510 San Pablo Street, Suite 415, Los Angeles, CA 90033, United States
| | - T Justin Gillenwater
- Keck School of Medicine, University of Southern California, 1975 Zonal Avenue, Los Angeles, CA 90033, United States; Division of Plastic Surgery, Department of Surgery, Keck School of Medicine, University of Southern California, 1510 San Pablo Street, Suite 415, Los Angeles, CA 90033, United States
| | - Eric Nagengast
- Division of Plastic Surgery, Department of Surgery, Keck School of Medicine, University of Southern California, 1510 San Pablo Street, Suite 415, Los Angeles, CA 90033, United States
| | - Meghan C McCullough
- Division of Plastic Surgery, Department of Surgery, Keck School of Medicine, University of Southern California, 1510 San Pablo Street, Suite 415, Los Angeles, CA 90033, United States
| | - David H Peng
- Keck School of Medicine, University of Southern California, 1975 Zonal Avenue, Los Angeles, CA 90033, United States; Department of Dermatology, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Ezralow Tower, Suite 5301, Los Angeles, CA 90033, United States
| | - Warren L Garner
- Keck School of Medicine, University of Southern California, 1975 Zonal Avenue, Los Angeles, CA 90033, United States; Division of Plastic Surgery, Department of Surgery, Keck School of Medicine, University of Southern California, 1510 San Pablo Street, Suite 415, Los Angeles, CA 90033, United States.
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Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis–Like Lupus Erythematosus. ACTA ACUST UNITED AC 2019; 25:224-231. [DOI: 10.1097/rhu.0000000000000830] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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14
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Zhang S, Tang S, Li S, Pan Y, Ding Y. Biologic TNF-alpha inhibitors in the treatment of Stevens-Johnson syndrome and toxic epidermal necrolysis: a systemic review. J DERMATOL TREAT 2019; 31:66-73. [PMID: 30702955 DOI: 10.1080/09546634.2019.1577548] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Background: Stevens-Johnson syndrome and toxic epidermal necrolysis (SJS-TEN) is one of severe cutaneous adverse reactions with low morbidity but high mortality. Different systemic immunomodulating treatments are proposed but still remain controversial. Tumor necrosis factor (TNF)-alpha is long thought to be a vital mediator of epithelial cell death in SJS-TEN, indicating a potential target for therapy.Objective: The aim of this systemic review is to evaluate the efficacy and safety of biologic TNF-alpha inhibitors in the treatment of SJS-TEN.Methods: We reviewed the published literature by searching from PubMed, EMBASE, Web of Science and ClinicalTrial.gov. A total of 27 articles fulfilling our inclusion criteria were found and analyzed.Results: There were 21 case reports, four case series and two randomized controlled trials (RCTs) on the biologic TNF-alpha inhibitors for SJS-TEN therapy, comprising 91 patients. TNF-alpha inhibitors were used as monotherapy, second-line therapy or combination therapy. Among them, 79 patients (86.8%) responded well and discharged with few side effects and complications.Conclusions: Biologic TNF-alpha inhibitors are a safe and effective treatment for SJS-TEN. But further, larger RCTs need to be conducted to provide more evidence for clinical application.
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Affiliation(s)
- Shan Zhang
- Department of Dermatology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Shunli Tang
- Department of Dermatology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Sheng Li
- Department of Dermatology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Yunlei Pan
- Department of Dermatology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Yingguo Ding
- Department of Dermatology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
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Vural S, Arakawa A, Arakawa Y, Prinz JC. The therapeutic potential of TNF-α antagonists in toxic epidermal necrosis: insights from two cases and adverse event reports. J Eur Acad Dermatol Venereol 2018; 32:e418-e419. [PMID: 29705991 DOI: 10.1111/jdv.15006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- S Vural
- Department of Dermatology and Allergology, Clinics of the Ludwig-Maximilian University, Munich, Germany
| | - A Arakawa
- Department of Dermatology and Allergology, Clinics of the Ludwig-Maximilian University, Munich, Germany
| | - Y Arakawa
- Department of Dermatology and Allergology, Clinics of the Ludwig-Maximilian University, Munich, Germany.,Department of Dermatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - J C Prinz
- Department of Dermatology and Allergology, Clinics of the Ludwig-Maximilian University, Munich, Germany
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Chang VS, Chodosh J, Papaliodis GN. Chronic Ocular Complications of Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis: The Role of Systemic Immunomodulatory Therapy. Semin Ophthalmol 2016; 31:178-87. [PMID: 26959145 DOI: 10.3109/08820538.2015.1114841] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are rare, but potentially blinding diseases that affect the skin and mucous membranes. Although the cutaneous manifestations tend to be self-limited and resolve without sequelae, the chronic ocular complications associated with SJS/TEN can persist despite local therapy. Poor understanding of the underlying pathophysiology and lack of a standardized clinical approach have resulted in a paucity of data in regards to suitable treatment options. Inflammatory cellular infiltration and elevated levels of ocular surface cytokines in the conjunctival specimens of affected patients give credence to an underlying immunogenic etiology. Furthermore, the presence of ongoing ocular surface inflammation and progressive conjunctival fibrosis in the absence of exogenous aggravating factors suggest a possible role for systemic immunomodulatory therapy (IMT). We review in detail the proposed immunogenesis underlying chronic ocular SJS/TEN and the possible utility of systemic IMT.
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Affiliation(s)
- Victoria S Chang
- a Department of Ophthalmology , Harvard Medical School, Massachusetts Eye and Ear Infirmary , Boston , Massachusetts , USA
| | - James Chodosh
- a Department of Ophthalmology , Harvard Medical School, Massachusetts Eye and Ear Infirmary , Boston , Massachusetts , USA
| | - George N Papaliodis
- a Department of Ophthalmology , Harvard Medical School, Massachusetts Eye and Ear Infirmary , Boston , Massachusetts , USA
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17
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Watari T, Sato S, Uojima H, Tokuda Y. Successful Combination Therapy Including Plasma Exchange for Severe Toxic Epidermal Necrolysis. J Gen Fam Med 2016. [DOI: 10.14442/jgfm.17.3_232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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18
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Horváth ON, Kapser C, Sárdy M. [Inflammatory diseases of oral mucous membranes]. Hautarzt 2016; 67:786-792. [PMID: 27576550 DOI: 10.1007/s00105-016-3862-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND Mucous membranes are involved in many different inflammatory disorders. METHODS We describe the clinical features, diagnostic workup, and therapy of inflammatory diseases of mucous membranes. RESULTS The diagnostic workup is based on medical history, clinical manifestations, histopathology, and serology. Inadequate dental hygiene is one of the main pathogenetic factors. Treatment options depend on the diagnosis, underlying cause, and disease severity. Both local and systemic immunosuppressive or immunomodulatory strategies may be effective. CONCLUSIONS The diagnostic and therapeutic management of inflammatory mucous membrane disorders is usually more difficult than that of skin diseases and requires interdisciplinary cooperation.
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Affiliation(s)
- O N Horváth
- Klinik und Poliklinik für Dermatologie und Allergologie, Ludwig-Maximilians-Universität, Frauenlobstr. 9-11, 80337, München, Deutschland
| | - C Kapser
- Klinik und Poliklinik für Dermatologie und Allergologie, Ludwig-Maximilians-Universität, Frauenlobstr. 9-11, 80337, München, Deutschland
| | - M Sárdy
- Klinik und Poliklinik für Dermatologie und Allergologie, Ludwig-Maximilians-Universität, Frauenlobstr. 9-11, 80337, München, Deutschland.
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19
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Merklen-Djafri C, Bessis D, Frances C, Poulalhon N, Debarbieux S, Cordel N, Lipsker D. Blisters and Loss of Epidermis in Patients With Lupus Erythematosus: A Clinicopathological Study of 22 Patients. Medicine (Baltimore) 2015; 94:e2102. [PMID: 26579826 PMCID: PMC4652835 DOI: 10.1097/md.0000000000002102] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The nosology of bullous lesions or equivalents (vesicles, erosions, and crusts) in patients with lupus erythematosus (LE) is rarely addressed.The primary aim of this study was to draw up a precise phenotypic inventory of such skin lesions; the secondary objective was to assess a potential relationship between the different types of loss of epidermis and extracutaneous lupus manifestations.We conducted a retrospective multicenter study including 22 patients with definite LE and bullous lesions or equivalents. All biopsies were reviewed. Patients were recruited in the dermatology departments of 6 centers. Patients were included if they met the diagnosis of systemic LE according to American College of Rheumatology and/or Systemic Lupus International Collaborating Clinics criteria or diagnosis of cutaneous LE based on classic clinical criteria and/or histological ascertainment of LE. Patients were recruited through clinician's memory and photographic collections.Three clinico-pathological patterns could be individualized. First, toxic epidermal necrolysis (TEN)-like, sheet-like, skin detachment; sun-exposure, mild mucosal involvement, and dermal mucin deposition allow differential diagnosis with classical Lyell syndrome. Second, vesiculo-bullae and/or crusting occurring on typical lesions of subacute cutaneous lupus erythematosus or chronic cutaneous lupus erythematosus. Third, tense vesicles and/or blisters with an underlying neutrophilic dermatosis and a usual response to dapsone.A careful analysis of 22 LE patients with epidermal detachment reveals 2 main pathomechanisms: a classic LE interface dermatitis, which can be hyperacute and lead to TEN-like skin detachment; and a neutrophilic dermatosis, with tense vesicles and/or blisters, including classic bullous LE.
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Affiliation(s)
- Carine Merklen-Djafri
- From the Faculté de Médecine, Université de Strasbourg; Clinique Dermatologique, Hôpitaux Universitaires de Strasbourg, Strasbourg (CM-D, DL); Faculté de Médecine, Université de Montpellier; Département de Dermatologie, Hôpital Saint Eloi, CHRU Montpellier, Montpellier (DB); Faculté de Médecine, Université Pierre-et-Marie-Curie Paris-VI, Service de Dermatologie Hôpital Tenon, Paris (CF); Faculté de Médecine, Université Claude Bernard Lyon 1, Service de Dermatologie, CHU Lyon Sud, Pierre-Bénite (NP, SD); and Service de Dermatologie-Médecine interne, CHU de Pointe-à-Pitre, Pointe-à-Pitre, Guadeloupe, (NC) France
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20
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Abstract
The advent of biologics in dermatologic treatment armentarium has added refreshing dimensions, for it is a major breakthrough. Several agents are now available for use. It is therefore imperative to succinctly comprehend their pharmacokinetics for their apt use. A concerted endeavor has been made to delve on this subject. The major groups of biologics have been covered and include: Drugs acting against TNF-α, Alefacept, Ustekinumab, Rituximab, IVIG and Omalizumab. The relevant pharmacokinetic characteristics have been detailed. Their respective label (approved) and off-label (unapproved) indications have been defined, highlighting their dosage protocol, availability and mode of administration. The evidence level of each indication has also been discussed to apprise the clinician of their current and prospective uses. Individual anti-TNF drugs are not identical in their actions and often one is superior to the other in a particular disease. Hence, the section on anti-TNF agents mentions the literature on each drug separately, and not as a group. The limitations for their use have also been clearly brought out.
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Affiliation(s)
- Virendra N Sehgal
- Dermato-Venereology (Skin/VD) Center, Sehgal Nursing Home, Delhi, India
| | - Deepika Pandhi
- Department of Dermatology and STD, University College of Medical Sciences and Associated Guru Teg Bahadur Hospital, Delhi, India
| | - Ananta Khurana
- Department of Dermatology and STD, University College of Medical Sciences and Associated Guru Teg Bahadur Hospital, Delhi, India
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21
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Paradisi A, Abeni D, Bergamo F, Ricci F, Didona D, Didona B. Etanercept therapy for toxic epidermal necrolysis. J Am Acad Dermatol 2014; 71:278-83. [PMID: 24928706 DOI: 10.1016/j.jaad.2014.04.044] [Citation(s) in RCA: 128] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 04/13/2014] [Accepted: 04/15/2014] [Indexed: 11/26/2022]
Abstract
BACKGROUND Toxic epidermal necrolysis (TEN) is a severe and potentially lethal drug reaction for which no standard treatment is available. OBJECTIVE To describe a case series of patients with TEN treated with a single dose of etanercept. METHODS We observed 10 consecutive patients with TEN. For each patient, we recorded the presence of comorbidities and all the drugs recently started (ie, in the last month). In all cases, 50 mg of etanercept was administered in a single subcutaneous injection. The clinical severity of disease was computed using the SCORe of Toxic Epidermal Necrosis (SCORTEN) scale. Using the probabilities of death linked to each level of SCORTEN score, we calculated the expected probability of death in our patients. Healing was defined as complete reepithelialization, and a time to healing curve was then obtained using the Kaplan-Meier method. RESULTS All patients promptly responded to treatment, reaching complete reepithelialization without complications or side effects. The median time to healing was 8.5 days. LIMITATIONS This is a small, uncontrolled case series. CONCLUSION These preliminary results suggest the possibility that tumor necrosis factor-alfa may be an effective target for control of TEN, a dangerous skin condition for which no effective cure has yet been found.
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Affiliation(s)
| | - Damiano Abeni
- Health Services Research Unit, IDI-IRCCS, Rome, Italy
| | | | - Francesco Ricci
- Department of Dermatology, Catholic University of the Sacred Heart, Rome, Italy
| | - Dario Didona
- Department of Dermatology, "La Sapienza" University, Rome, Italy
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Paquet P, Jennes S, Rousseau AF, Libon F, Delvenne P, Piérard GE. Effect of N-acetylcysteine combined with infliximab on toxic epidermal necrolysis. A proof-of-concept study. Burns 2014; 40:1707-12. [PMID: 24726294 DOI: 10.1016/j.burns.2014.01.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 01/02/2014] [Accepted: 01/26/2014] [Indexed: 10/25/2022]
Abstract
INTRODUCTION The pathophysiology of toxic epidermal necrolysis (TEN) is thought to be related to a drug-induced oxidative stress combined with TNFα overexpression by keratinocytes. None of the current treatments for TEN including systemic corticosteroids, cyclosporine and intravenous administration of immunoglobulins has proven superior over supportive care only. METHODS A total of 10 TEN patients were enrolled to be treated at admission in burn units with the antioxidant N-acetylcysteine [NAC, 150mg/kg in a 20-h intravenous (IV) administration], or the combination of the same IV NAC perfusion with the anti-TNFα antibody infliximab (Remicade(®)), administered at a 5mg/kg dosage as a single 2-h IV administration. TEN was confirmed by a skin biopsy taken from a bullous lesion. At entry in the trial and 48h later, the illness auxiliary score (IAS) of clinical severity was determined and the extent in altered skin area (erythema and blisters) was assessed as a relative body area. Skin biopsies of both clinically uninvolved and erythematous areas were collected and immunohistochemistry was performed for assessing the density of inflammatory cells (CD8+ T cells, CD68+ macrophages) and keratinocytes enriched in intracellular calcium (Ca(++)) identified by the Mac387 anti-calprotectin antibody. RESULTS No unexpected drug-induced adverse event was noticed. After 48h of both treatment modalities, improvements were not observed in the extent of skin involvement and in IAS. Immunohistopathology showed the absence of reduction in the amount of intraepidermal inflammatory cells. An increased intracellular Ca(++) load in clinically uninvolved keratinocytes and in erythematous epidermis was noticed. This latter finding suggested the progression in the way of the apoptotic process. On burn unit discharge, the survival in each modality of treatment was not improved compared to the expected outcomes determined from the IAS at admission. CONCLUSIONS In this proof-to-concept attempt, NAC treatment or its combination with infliximab did not appear to reverse the evolving TEN process.
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Affiliation(s)
- Philippe Paquet
- Department of Dermatopathology, Unilab Lg, University Hospital of Liège, 4000 Liège, Belgium
| | - Serge Jennes
- Burn Center, Military Hospital of Brussels, Neder-Over-Heembeek, Belgium
| | | | - Florence Libon
- Department of Dermatology, University Hospital of Liège, Liège, Belgium
| | - Philippe Delvenne
- Department of Dermatopathology, Unilab Lg, University Hospital of Liège, 4000 Liège, Belgium
| | - Gérald E Piérard
- Laboratory of Skin Bioengineering and Imaging (LABIC), Department of Clinical Sciences, Liège University, Liège, Belgium.
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Thong BYH. Stevens-Johnson syndrome / toxic epidermal necrolysis: an Asia-Pacific perspective. Asia Pac Allergy 2013; 3:215-23. [PMID: 24260726 PMCID: PMC3826606 DOI: 10.5415/apallergy.2013.3.4.215] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 09/22/2013] [Indexed: 01/11/2023] Open
Abstract
Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are severe cutaneous adverse reactions (SCAR) to drugs which are associated with significant morbidity and mortality. High risk drugs in Asia are similar to those reported worldwide. Human leukocyte antigen (HLA)-related risk alleles for carbamazepine and allopurinol SCAR are unique to Asians. Although prognostic scoring systems like the SCORTEN have been used for more than a decade, pitfalls and caveats need to be recognized, in particular in patients with multiple medical co-morbidities and systemic features in SJS/TEN. In centres without a tertiary Burns Centre, SJS/TEN patients can still be managed successfully in general and dermatology wards with well-executed supportive/nursing care. Controversy remains regarding the effectiveness of immunomodulation in reducing SJS/TEN morbidity, mortality and hastening re-epithelialization. Despite paucity of robust evidence, intravenous immunoglobulins and ciclosporin remain the most commonly used modalities worldwide. Acute and long-term ocular effects are an important source of morbidity for which emerging ophthalmic therapies appear promising. Quality of life issues have now become an important outcome in patients with SJS/TEN as they often impact survivors' future attitudes towards pharmacotherapy. Even though pharmacogenetic testing for high-risk drugs appears to be the panacea for preventing carbamazepine- and allopurinol-induced SJS/TEN in ethnic Asians, many issues remain before health regulators in our region can conclusively determine whether testing should be made mandatory or highly recommended as standard of care.
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Affiliation(s)
- Bernard Yu-Hor Thong
- Department of Rheumatology, Allergy and Immunology, Tan Tock Seng Hospital, Singapore 308433, Singapore
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24
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Combination of infliximab and high-dose intravenous immunoglobulin for toxic epidermal necrolysis: successful treatment of an elderly patient. Case Rep Dermatol Med 2012; 2012:915314. [PMID: 23259092 PMCID: PMC3505931 DOI: 10.1155/2012/915314] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Accepted: 09/03/2012] [Indexed: 11/30/2022] Open
Abstract
Toxic epidermal necrolysis (TEN) is a rare, severe cutaneous adverse drug reaction with average mortality 25–35%, especially among elderly multimorbid patients. Established therapeutic guidelines do not exist and controversies underlie many of the presently suggested treatment regimens. Herein we present the use of the recently described combination scheme of methylprednisolone (500 mg methylprednisolone bolus i.v.) followed by infliximab (5 mg/kg i.v.) and high-dose intravenous immunoglobulin (2 g/kg over 5 days) to treat an elderly, 74-year-old female patient with TEN (SCORTEN 3) within the premises of a district hospital. Already from the second day of hospitalization the skin condition markedly stabilized and the patient's status improved rapidly thereafter. She was discharged after 19 days in stationary care in excellent general condition and remained without any sequels 9 months afterwards. The present paper further supports the feasibility, efficacy, and safety of the proposed combination modality for the treatment of elderly patients with TEN, a population susceptible to more severe TEN.
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25
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Spyridonos P, Gaitanis G, Bassukas ID, Tzaphlidou M. Gray Hausdorff distance measure for medical image comparison in dermatology: Evaluation of treatment effectiveness by image similarity. Skin Res Technol 2012; 19:e498-506. [PMID: 23020792 DOI: 10.1111/srt.12001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/09/2012] [Indexed: 11/28/2022]
Abstract
INTRODUCTION In clinical dermatology, the stabilization of the overall skin condition can be in many cases the earliest qualitative measure of the effectiveness of the therapeutic intervention. Subjective image comparisons, that offer empirical 'qualitative' judgments of degrees of image similarities, are traditionally employed by the involved physicians. OBJECTIVES To quantify, by means of an image similarity metric, the degree of stabilization of an expanding skin disease, and to identify the situation of 'no further change' of the skin condition of the patient, providing thus the physician with an early, objective measure of the efficacy of the used therapy. METHODS For treatment assessment, a variant of gray Hausdorff distance metric was employed to compare images of lesional skin segments of a patient, taken at different time points during a therapeutic course. Prior to image comparison, an effective preprocessing scheme was adapted to constrain wide pose and light variations. The proposed similarity algorithm was tested on raw clinical image data sets of patients diagnosed with toxic epidermal necrolysis, a life-threatening condition with rapid evolution. Fine tuning of algorithm's parameters was optimized using Precision-Recall curves. RESULTS Proposed image comparison method resulted in a high-degree of image similarity (about 96%) between pictures taken at second and fifth day of hospitalization. Current similarity results substantiate a significant agreement between the computer-treatment assessment, by means of image comparison, and the corresponding clinical experts' review of skin condition. CONCLUSION Objective evidence of 'no further change' situation may provide (a) intuitive clinical decision support to dermatologists in assessing aggressive skin conditions, where the timely evaluation of treatment response is of vital importance and (b) a versatile end-point measure for corresponding therapeutic clinical trials.
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Affiliation(s)
- Panagiota Spyridonos
- Department of Medical Physics, University of Ioannina Medical School, University Campus, Ioannina, Greece.
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