-
PloS One 2021Genetic association studies on alopecia areata (AA) performed in various populations have shown heterogeneous results. The aim of the current review was to synthesize... (Meta-Analysis)
Meta-Analysis
OBJECTIVES
Genetic association studies on alopecia areata (AA) performed in various populations have shown heterogeneous results. The aim of the current review was to synthesize the results of said studies to estimate the impact of FAS, FASL, PTPN22, CTLA4 and IL2RA gene polymorphisms on AA susceptibility.
DESIGN
A systematic literature search was conducted in the Medline, Web of Science, Scopus, EMBASE and LILACS databases. Studies published up to June 2020 were included. The results available in the grey literature including the Open Grey and Google Scholar databases were also used. The texts of potentially related studies were screened by individual reviewers. Evidence of publication bias was assessed using the Newcastle-Ottawa scale and the quality of evidence was assessed using the GRADE system. The quantitative synthesis was performed using the fixed effect model.
RESULTS
Out of 1784 articles, we identified 18 relevant articles for the qualitative synthesis and 16 for the quantitative synthesis. In a study of rs2476601 polymorphism of PTPN22 gene, including 1292 cases and 1832 controls, a correlation was found with the risk of developing AA in the allelic model (OR1.49 [95% C:1.13-1.95]), the heterozygous codominant (OR1.44 [95% CI:1:19-1.76]) and dominant model (OR1.43 [95% CI:1.18-1.73]). No association was found between the presence of FASL, PTPN22, CTLA and IL2RA gene polymorphisms with AA susceptibility.
CONCLUSIONS
The results suggest that the T allele of the single nucleoid polymorphism (SNP) rs2476601 in PTPN22 gene is a risk factor for developing alopecia areata. However, more robust studies defining the ethnic background of the population of origin are required, so that the risk identified in the present study can be validated. Additionally, a greater number of studies is necessary to evaluate the role of the FAS, FASL, PTPN22, CTLA4 and IL2RA genetic variants, given the heterogenous results found in the literature.
Topics: Alleles; Alopecia Areata; CTLA-4 Antigen; Fas Ligand Protein; Genetic Association Studies; Genetic Predisposition to Disease; Genotype; Humans; Interleukin-2 Receptor alpha Subunit; Polymorphism, Single Nucleotide; Protein Tyrosine Phosphatase, Non-Receptor Type 22; fas Receptor
PubMed: 34735462
DOI: 10.1371/journal.pone.0258499 -
Alopecia Areata Related Paradoxical Reactions in Patients on Dupilumab Therapy: A Systematic Review.Journal of Cutaneous Medicine and... 2021
Topics: Adult; Alopecia Areata; Antibodies, Monoclonal, Humanized; Humans
PubMed: 33586473
DOI: 10.1177/1203475421995186 -
Skin Health and Disease Jun 2023For many years, clinical observations have suggested that there is an intrinsic connection between psychological state and skin diseases. Stress responses are typically...
For many years, clinical observations have suggested that there is an intrinsic connection between psychological state and skin diseases. Stress responses are typically mediated by several hormones, which are modulated the hypothalamic-pituitary-adrenal axis. This typical stress response is not only one theory for psychiatry disorder pathophysiology, but it also modifies hair growth by altering the skin's inflammatory environment. Given that different forms of hair loss, such as androgenetic alopecia, alopecia areata, or telogen effluvium, and hair follicle cycling can be altered by immune cells within the follicle milieu, we hypothesized that specific forms of hair loss are correlated to psychiatric illnesses. To address this, we conducted a systematic review by searches in April and May 2021 through Ovid MEDLINE and PUBMED (ranging from 1951 to the present day), identifying 179 reports. A further 24 reports were identified through website and citation searches giving a total of 201 reports. After applying exclusion criteria, 21 papers were reviewed, and 17 were included for data analysis. It is undeniable that hair loss greatly affects Health-related Quality of Life (HrQol) and it is heavily associated with major depressive disorder and anxiety. The correlation between hair loss and mental health disorders was significant, however, due to the low number of publications with quantitative data we were not able to identify correlations between each hair loss type with each psychiatric disorder. Further studies to better connect specific hair loss diseases to specific disorders are therefore critical in bettering the way both psychiatric disease, and hair loss, are managed.
PubMed: 37275427
DOI: 10.1002/ski2.194 -
JAMA Dermatology Oct 2018Contact immunotherapy with diphenylcyclopropenone or squaric acid dibutyl ester is a preferred treatment for severe alopecia areata; however, the defined criteria for... (Meta-Analysis)
Meta-Analysis
IMPORTANCE
Contact immunotherapy with diphenylcyclopropenone or squaric acid dibutyl ester is a preferred treatment for severe alopecia areata; however, the defined criteria for therapeutic hair regrowth and regrowth rate have been highly heterogeneous across studies.
OBJECTIVE
To summarize the clinical outcomes of contact immunotherapy for alopecia areata according to standardized criteria for therapeutic hair regrowth and several prognostic factors.
DATA SOURCE
A database search of MEDLINE, Embase, and Cochrane Library was performed for articles published before November 20, 2017, using the search terms areata, totalis, universalis, sensitizer, sensitization, immunotherapy, DPCP, diphenylcyclopropenone, diphencyprone, SADBE, and squaric.
STUDY SELECTION
Clinical trials or observational studies that investigated contact immunotherapy for alopecia areata and subgrouped the disease into patchy alopecia or alopecia totalis/universalis and reported their hair regrowth rates were included, whereas studies that investigated combination therapy or nonconventional protocol and case series or reviews were excluded.
DATA EXTRACTION AND SYNTHESIS
The following data were extracted from each of the studies included in this meta-analysis: study year and setting, sensitizer type, study population, study population composition by disease subtype, defined criteria for therapeutic hair regrowth, and regrowth rate of contact immunotherapy. The incidence of adverse effects and recurrence rate were also recorded. A random effects model was used for data synthesis because of the expected high heterogeneity of the included studies.
MAIN OUTCOMES AND MEASURES
The main outcome was therapeutic hair regrowth rate according to the 4-grade criteria for therapeutic regrowth. Secondary outcomes included incidence of treatment-related adverse effects and recurrence rate.
RESULTS
Forty-five studies comprising 2227 patients were analyzed. The overall rate of any hair regrowth was 65.5% among patients with alopecia areata (74.6% in the patchy alopecia and 54.5% in the alopecia totalis/universalis subgroups). However, the complete regrowth rate was 32.3% (24.9% in the patchy alopecia and 32.3% in the alopecia totalis/universalis subgroups). Disease extent of 50% or greater (odds ratio [OR], 3.05; 95% CI, 2.26-4.12), atopic history (OR, 1.61; 95% CI, 1.03-2.50), and nail involvement (OR, 2.06; 95% CI. 1.26-3.36) were associated with poorer therapeutic outcome. Recurrence rates were 38.3% among patients receiving maintenance treatment and 49.0% among those not receiving maintenance treatment.
CONCLUSIONS AND RELEVANCE
Various factors were associated with the clinical outcomes of contact immunotherapy for alopecia areata, with significant differences in hair regrowth rates according to the level of expected therapeutic regrowth. Quantitative summarization may improve patient education and lead to better therapeutic adherence and outcomes.
Topics: Adjuvants, Immunologic; Alopecia; Alopecia Areata; Cyclobutanes; Cyclopropanes; Hair; Humans; Immunotherapy; Recurrence
PubMed: 30073292
DOI: 10.1001/jamadermatol.2018.2312 -
Dermatologic Therapy Nov 2021Since the emergence of the new coronavirus disease 19 (COVID-19) pandemic, there has been a concern for the patients with chronic autoimmune diseases including...
Since the emergence of the new coronavirus disease 19 (COVID-19) pandemic, there has been a concern for the patients with chronic autoimmune diseases including dermatological conditions over the potential exacerbation of these underlying conditions after infection with severe acute respiratory syndrome coronavirus-2 (SARS-CoV2). We performed a systematic review to evaluate presentations, postinfection change in the manifestation, diagnosis, and management of flare-ups of underlying dermatologic disease in patients with COVID-19. A total of 17 articles were recovered reporting on flare-ups of dermatological disease including pemphigus vulgaris, psoriasis, subacute cutaneous lupus erythematosus, acrodermatitis continua of Hallopeau, systemic sclerosis sine scleroderma, and Sézary syndrome (SS). Out of these, psoriasis and alopecia areata were the most common conditions. However, most cases of psoriasis could have been attributed to either antimalarial agents that were initially used for the treatment of COVID-19 or discontinuation of treatment following SARS-CoV2 infection.
Topics: COVID-19; Humans; Pandemics; Psoriasis; RNA, Viral; SARS-CoV-2
PubMed: 34453380
DOI: 10.1111/dth.15113 -
Frontiers in Immunology 2024The objective of this study is to evaluate the risk of secondary autoimmune diseases in multiple sclerosis (MS) patients treated with alemtuzumab (ALZ) through a... (Meta-Analysis)
Meta-Analysis
BACKGROUND AND PURPOSE
The objective of this study is to evaluate the risk of secondary autoimmune diseases in multiple sclerosis (MS) patients treated with alemtuzumab (ALZ) through a meta-analysis.
METHODS
PubMed, Web of Science, OVID, EMBASE, and Cochrane central register of controlled trials were searched. Information and data were screened and extracted by 2 researchers. The obtained data were analyzed using the R software meta package. Quality assessment was conducted using the Newcastle-Ottawa Scale (NOS). The causes of heterogeneity were analyzed using subgroup analysis and sensitivity analysis. Publication bias was evaluated using funnel plots and Egger's test.
RESULTS
The search retrieved a total of 3530 papers from the databases. After screening, a total of 37 studies were included in the meta-analysis. The analysis results indicate that the pooled incidence rate of overall secondary autoimmune events (SAEs) in the included studies was 0.2824 [0.2348, 0.3300] (I²=94%, p<0.01). The overall incidence of autoimmune thyroid events (ATE) was 0.2257 [0.1810, 0.2703] (I²=94%, p<0.01). Among them, the rate of serious autoimmune thyroid events (SATE) was 0.0541 [0.0396, 0.0687] (I²=0%, p=0.44). The incidence rates of different thyroid events were as follows: Graves' disease (GD), 0.2266 [0.1632, 0.2900] (I²=83%, p<0.01); Hashimoto thyroiditis (HT), 0.0844 [0.0000, 0.2262] (I²=81%, p=0.02); Hashimoto thyroiditis with hypothyroidism (HTwH), 0.0499 [0.0058, 0.0940] (I²=37%, p=0.21); fluctuating thyroid dysfunction (FTD), 0.0219 [0.0015, 0.0424] (I²=0%, p=0.40); transient thyroiditis (TT), 0.0178 [0.0062, 0.0295] (I²=0%, p=0.94). The overall incidence of hematological events was 0.0431 [0.0274, 0.0621] (I²=70%, p<0.01). The incidence rates from high to low were as follows: lymphopenia, 0.0367 [0.0000, 0.0776] (I²=81%, p=0.02); Idiopathic thrombocytopenic purpura (ITP), 0.0258 [0.0199, 0.0323] (I²=25%, p=0.15); Hemolytic anemia (HA), 0.0177 [0.0081, 0.0391] (I²=29%, p=0.23); pancytopenia, 0.0136 [0.0000, 0.0314] (I²=0%, p=0.67); Neutropenia, 0.0081 [0.0000, 0.0183] (I²=0%, p=0.42). After excluding thyroid and hematological diseases, the combined incidence of other related SAEs was 0.0061 [0.0014, 0.0109] (I²=50%, p=0.02). The incidence of each disease ranked from highest to lowest as: skin psoriasis (SP), 0.0430 [0.0000, 0.0929] (I²=0%, p=0.57); alopecia areata (AA), 0.0159 [0.0024, 0.0372] (I²=19%, p=0.29); vitiligo, 0.0134 [0.0044, 0.0223] (I²=0%, p=0.81); inflammatory atrichia (IA), 0.0103 [0.0000, 0.0232] (I²=0%, p=0.43); chronic urticaria (CU), 0.0107 [0.0000, 0.0233] (I²=0%, p=0.60); and nephropathy, 0.0051 [0.0000, 0.0263] (I²=62%, p=0.02).
CONCLUSION
The occurrence of secondary autoimmune diseases in patients with MS treated with ALZ is noteworthy, particularly in the form of thyroid events and hematological events. Clinicians should monitor the overall condition of patients promptly for early management and avoid delayed diagnosis and treatment.
SYSTEMATIC REVIEW REGISTRATION
inplasy.com/inplasy-2024-4-0048/, identifier INPLASY202440048.
Topics: Humans; Alemtuzumab; Multiple Sclerosis; Autoimmune Diseases; Incidence; Hashimoto Disease
PubMed: 38690271
DOI: 10.3389/fimmu.2024.1343971 -
Stem Cell Research & Therapy Jun 2024The aim of this study is to systematically review randomized controlled clinical trials (RCTs) studying various types of regenerative medicine methods (such as...
AIMS AND OBJECTIVES
The aim of this study is to systematically review randomized controlled clinical trials (RCTs) studying various types of regenerative medicine methods (such as platelet-rich plasma, stromal vascular fraction, cell therapy, conditioned media, etc.) in treating specific dermatologic diseases. Rejuvenation, scarring, wound healing, and other secondary conditions of skin damage were not investigated in this study.
METHOD
Major databases, including PubMed, Scopus, and Web of Science, were meticulously searched for RCTs up to January 2024, focusing on regenerative medicine interventions for specific dermatologic disorders (such as androgenetic alopecia, vitiligo, alopecia areata, etc.). Key data extracted encompassed participant characteristics and sample sizes, types of regenerative therapy, treatment efficacy, and adverse events.
RESULTS
In this systematic review, 64 studies involving a total of 2888 patients were examined. Women constituted 44.8% of the study population, while men made up 55.2% of the participants, with an average age of 27.64 years. The most frequently studied skin diseases were androgenetic alopecia (AGA) (45.3%) and vitiligo (31.2%). The most common regenerative methods investigated for these diseases were PRP and the transplantation of autologous epidermal melanocyte/keratinocyte cells, respectively. Studies reported up to 68.4% improvement in AGA and up to 71% improvement in vitiligo. Other diseases included in the review were alopecia areata, melasma, lichen sclerosus et atrophicus (LSA), inflammatory acne vulgaris, chronic telogen effluvium, erosive oral lichen planus, and dystrophic epidermolysis bullosa. Regenerative medicine was found to be an effective treatment option in all of these studies, along with other methods. The regenerative medicine techniques investigated in this study comprised the transplantation of autologous epidermal melanocyte/keratinocyte cells, isolated melanocyte transplantation, cell transplantation from hair follicle origins, melanocyte-keratinocyte suspension in PRP, conditioned media injection, a combination of PRP and basic fibroblast growth factor, intravenous injection of mesenchymal stem cells, concentrated growth factor, stromal vascular fraction (SVF), a combination of PRP and SVF, and preserving hair grafts in PRP.
CONCLUSION
Regenerative medicine holds promise as a treatment for specific dermatologic disorders. To validate our findings, it is recommended to conduct numerous clinical trials focusing on various skin conditions. In our study, we did not explore secondary skin lesions like scars or ulcers. Therefore, assessing the effectiveness of this treatment method for addressing these conditions would necessitate a separate study.
Topics: Adult; Female; Humans; Male; Platelet-Rich Plasma; Randomized Controlled Trials as Topic; Regenerative Medicine; Skin Diseases
PubMed: 38886861
DOI: 10.1186/s13287-024-03800-6 -
Annals of Dermatology Dec 2023
PubMed: 38086361
DOI: 10.5021/ad.22.095 -
JAMA Dermatology Mar 2022Although there have been increased efforts in dermatologic research to improve representation of patient sex, race, and ethnicity, there are limited data evaluating...
IMPORTANCE
Although there have been increased efforts in dermatologic research to improve representation of patient sex, race, and ethnicity, there are limited data evaluating resulting changes.
OBJECTIVE
To characterize the diversity of participants in dermatologic clinical trials conducted in the US published from 2015 to 2020 pertaining to common dermatologic conditions affecting all patient demographic categories compared with findings from 2010-2015.
EVIDENCE REVIEW
A systematic literature review through the PubMed database was conducted for randomized clinical trials published between July 1, 2015, and July 1, 2020, using keywords alopecia areata, acne, atopic dermatitis, lichen planus, psoriasis, seborrheic dermatitis, and vitiligo. Data collected included distribution of participant demographic characteristics, funding source, and journal type. Reflecting US Census data, studies were defined as unrepresentative of race and ethnicity if they included less than 20% ethnically or racially diverse participants or unrepresentative of sex if they included less than 45% women. Python was used for statistical analysis by χ2 tests or Fisher exact tests.
FINDINGS
A total of 392 randomized clinical trials were included. In comparison with the period from 2010-2015, the reporting rate for race and ethnicity in US studies has increased from 59.8% to 71.9% (P = .05). However, the proportion of reporting articles including at least 20% non-White representation remains unchanged at 38.1% with 37 of 97 reporting randomized clinical trials in 2010-2015 and 53 of 139 reporting randomized clinical trials in 2015-2020 (P = .99). Psoriasis studies included the least diversity, with 12.1% of studies recording at least 20% non-White participants and 29.5% of studies recording at least 45% female participants.
CONCLUSIONS AND RELEVANCE
The findings of this systematic review suggest that reporting racial and ethnic data since 2010-2015 has become more transparent. However, inclusion of representative patient populations may still be considered inadequate, particularly in psoriasis studies. Diversity in clinical trials is important for representation of the affected patient populations, and additional efforts are warranted in support of this endeavor.
Topics: Dermatitis, Atopic; Dermatology; Ethnicity; Female; Humans; Male; Psoriasis; Research Design
PubMed: 35080592
DOI: 10.1001/jamadermatol.2021.5596 -
Medicine May 2019The single nucleotide polymorphism (SNP) rs2476601 of the protein tyrosine phosphatase, nonreceptor type 22 (PTPN22) gene has been presented to implicate in the... (Meta-Analysis)
Meta-Analysis
BACKGROUND
The single nucleotide polymorphism (SNP) rs2476601 of the protein tyrosine phosphatase, nonreceptor type 22 (PTPN22) gene has been presented to implicate in the pathogenesis of alopecia areata (AA) in a few association investigations with limited sample size and inconsistent conclusions.
METHODS
The aim of the current meta-analysis was to assess and synthesize the presently available data on the connection between rs2476601 and AA vulnerability. Six electronic databases, including EMBASE, PubMed, Web of Science, the Cochrane Library, Wanfang data, and the China National Knowledge Infrastructure database (CNKI), were systematically retrieved for relevant observational studies published previous to November 2018. Total odds ratios (ORs) and corresponding 95% confidence intervals (95% CIs) were analyzed to evaluate the correlation between PTPN22 polymorphism and AA. Risk of bias was estimated according to the Newcastle-Ottawa Scale (NOS). Sensitivity analyses were carried out using the RevMan 5.3 software.
RESULTS
In general, 5 case-control studies including 1129 AA patients and 1702 healthy control individuals were obtained for this meta-analysis. The pooled results suggested that rs2476601 SNP was significantly associated with AA susceptibility under allelic model (C vs T, OR = 0.77, 95% CI, 0.64-0.92, P = .003) and recessive model (CC vs CT + TT, OR = 0.73, 95% CI, 0.60-0.88, P = .001).
CONCLUSION
On the basis of the results of the current research, the rs2476601 polymorphism of PTPN22 gene is significantly correlated with AA susceptibility. The C-allele and CC-genotype carriers at this locus have a lower risk of AA.
Topics: Alleles; Alopecia Areata; Case-Control Studies; Female; Genetic Predisposition to Disease; Genotype; Heterozygote; Humans; Male; Observational Studies as Topic; Polymorphism, Single Nucleotide; Protein Tyrosine Phosphatase, Non-Receptor Type 22; Risk; Severity of Illness Index
PubMed: 31096440
DOI: 10.1097/MD.0000000000015448