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Voriconazole is a triazole antifungal used to prevent and treat invasive fungal infections after lung transplantation, but it has been associated with an increased risk of developing cutaneous squamous cell carcinoma (SCC). Despite widespread use, there are no clear guidelines for optimal prophylactic regimens that balance the competing risks and benefits. We conducted a retrospective cohort study of all lung transplant recipients at the University of California, San Francisco, who were transplanted between October 1991 and December 2012 (n = 455) to investigate whether voriconazole exposure affected development of SCC, Aspergillus colonization, invasive aspergillosis and all-cause mortality. Voriconazole exposure was associated with a 73% increased risk of developing SCC (hazard ratio [HR] 1.73; 95% confidence interval [CI]: 1.04-2.88; p = 0.03), with each additional 30-day exposure at the standard dose increasing the risk by 3.0% (HR 1.03; 95% CI: 1.02-1.04; p

BackgroundMost studies on racial disparities in childhood atopic dermatitis (AD) did not consider persistent AD or account for differences in vitamin D status.MethodsAmong 1418 children recruited from a Massachusetts HMO into the pre-birth Project Viva cohort, we examined associations of child’s race/ethnicity with maternal report of child’s AD diagnosis by annual questionnaires. We used multivariable logistic regression adjusted for socio- demographics (maternal education, household income, smoking exposure, parental atopy, breastfeeding duration, child sex) and cord blood 25-hydroxyvitamin D, to estimate odds ratios (OR) of incident AD by early childhood (median age 3.3 years), and, among young children with AD, OR of persistence through mid-childhood (median age 7.7 years).Results68% of children were non-Hispanic white, 13% were black, and 19% were other race/ethnicities. By early childhood, 497/1418 (35%) had incident AD. Among those with both AD and follow- up to mid-childhood, 58/389 (15%) had persistent AD. Black children were more likely than white children to have incident AD (OR 2.21; 95% CI 1.60, 3.04), even after adjustment for socio-demographics (2.64; 1.79, 3.89) and vitamin D levels (1.93; 1.07, 3.48). Black children also had higher odds of persistent AD (3.21; 1.63, 6.32; fully adjusted 4.60; 1.24, 17.13). Children with other race/ethnicities had non-significantly higher risk for AD incidence and persistence than white children.ConclusionIn this cohort, compared with white children, black children and children with other race/ethnicities were at higher risk for incident and persistent AD, even after accounting for differences in socio-demographic characteristics and vitamin D levels.

© 2015 Hoffmann et al.An efficient approach to characterizing the disease burden of rare genetic variants is to impute them into large well-phenotyped cohorts with existing genome-wide genotype data using large sequenced referenced panels. The success of t

Patients with autoimmune bullous diseases are at an increased risk of infection, both from the underlying skin disease and from immunosuppressive treatments. Limited information is available on vaccine beliefs and behaviors in dermatology patients and adults with autoimmune bullous diseases in particular. To understand vaccine decision making, identify perceived risks and benefits of vaccinations, and discuss individual experiences in patients with autoimmune bullous diseases in the United States. A qualitative study was performed utilizing semi-structured interviews, and analysis was conducted on NVivo. Patterns were identified in the coded data, and representative quotations were recorded for each major theme. Interviews were conducted between February 15, 2022 and September 15, 2022. Twenty patients with a diagnosis of bullous pemphigoid, mucous membrane pemphigoid, pemphigus vulgaris, or pemphigus foliaceous were interviewed. Of the 20 participants, 14 (70%) were female, with a mean (SD, range) age of 64.8 (13.2, 34-83) years. Key themes that emerged from qualitative analysis of the interviews included patient concerns regarding their increased susceptibility to infection, potential exacerbation of skin disease following vaccination, and the effect of immunosuppressive medications on humoral response to vaccines. Lack of appointment availability, difficulty accessing vaccines, and cost were commonly identified barriers to vaccination. These findings provide valuable knowledge for dermatologists in regard to providing counseling specific to patient concerns and to improve communication surrounding vaccination in the dermatology setting., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

Background: Actinic keratosis (AK) is a common dermatological condition, and among the most common dermatological diagnoses in older populations. Although the prevalence of AK depends on demographic and environmental factors, little is known about the global context of AK., Objectives: To provide a comprehensive and updated analysis of the global prevalence rate and incidence of AK in the general population through a systematic review and meta-analysis, and - through subgroup analyses - to identify high-risk phenotypes, demographic and lifestyle risk factors and regional variations in disease prevalence., Methods: A systematic search of Embase, MEDLINE, Web of Science and Google Scholar was performed on 20 May 2022. Two reviewers independently screened and assessed the quality of each study using a validated critical appraisal checklist. Epidemiological measurements (e.g. prevalence) from individual studies performed in the general population were then pooled in a random-effects meta-analysis. Subgroup analyses (i.e. population age, geographical region, occupation, sex and study quality) were conducted., Results: Of the 65 articles that made it through the full-text screening, 60 reported a point prevalence. A meta-analysis of these articles yielded an overall point prevalence of 14% [95% confidence interval (CI) 14-15]. In further analyses, the calculated prevalence rate varied depending on subgroup. The pooled incidence rate from the seven eligible studies analysed was 1928 per 100 000 person-years (PY; 95% CI -439 to 4294)., Conclusions: This comprehensive meta-analysis provides an updated global prevalence rate of AK of 14%, indicating a significant worldwide disease burden. The incidence rate of AK was found to be 1928 per 100 000 PY, emphasizing a growing public health concern. However, high heterogeneity among studies suggests that various factors influence the AK prevalence rate, necessitating further research to understand the observed differences., (© The Author(s) 2023. Published by Oxford University Press on behalf of British Association of Dermatologists.)

The nonreciprocal magnetoelectric effect, also known as the Tellegen effect, promises a number of groundbreaking phenomena connected to fundamental (e.g., electrodynamics of axion and relativistic matter) and applied physics (e.g., magnetless isolators). We propose a three-dimensional metamaterial with an isotropic and resonant Tellegen response in the visible frequency range. The metamaterial is formed by randomly oriented bi-material nanocylinders in a host medium. Each nanocylinder consists of a ferromagnet in a single-domain magnetic state and a high-permittivity dielectric operating near the magnetic Mie-type resonance. The proposed metamaterial requires no external magnetic bias and operates on the spontaneous magnetization of the nanocylinders. By leveraging the emerging magnetic Weyl semimetals, we further show how a giant bulk effective magnetoelectric effect can be achieved in a proposed metamaterial, exceeding that of natural materials by almost four orders of magnitude., (© 2024. The Author(s).)

Background: The recent expansion of immunotherapy for stage IIB/IIC melanoma highlights a growing clinical need to identify patients at high risk of metastatic recurrence and, therefore, most likely to benefit from this therapeutic modality., Objective: To develop time-to-event risk prediction models for melanoma metastatic recurrence., Methods: Patients diagnosed with stage I/II primary cutaneous melanoma between 2000 and 2020 at Mass General Brigham and Dana-Farber Cancer Institute were included. Melanoma recurrence date and type were determined by chart review. Thirty clinicopathologic factors were extracted from electronic health records. Three types of time-to-event machine-learning models were evaluated internally and externally in the distant versus locoregional/nonrecurrence prediction., Results: This study included 954 melanomas (155 distant, 163 locoregional, and 636 1:2 matched nonrecurrences). Distant recurrences were associated with worse survival compared to locoregional/nonrecurrences (HR: 6.21, P < .001) and to locoregional recurrences only (HR: 5.79, P < .001). The Gradient Boosting Survival model achieved the best performance (concordance index: 0.816; time-dependent AUC: 0.842; Brier score: 0.103) in the external validation., Limitations: Retrospective nature and cohort from one geography., Conclusions: These results suggest that time-to-event machine-learning models can reliably predict the metastatic recurrence from localized melanoma and help identify high-risk patients who are most likely to benefit from immunotherapy., Competing Interests: Conflicts of interest YRS is an advisory board member/consultant and has received honoraria from Incyte Corporation, Castle Biosciences, Galderma, and Sanofi outside of the submitted work., (Copyright © 2023 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved.)

Basal cell carcinoma (BCC) is one of the most common malignancies worldwide, yet its genetic determinants are incompletely defined. We perform a European ancestry genome-wide association (GWA) meta-analysis and a Hispanic/Latino ancestry GWA meta-analysis and meta-analyze both in a multi-ancestry GWAS meta-analysis of BCC, totaling 50,531 BCC cases and 762,234 controls from four cohorts (GERA, Mass-General Brigham Biobank, UK Biobank, and 23andMe research cohort). Here we identify 122 BCC-associated loci, of which 36 were novel, and subsequently fine-mapped these associations. We also identify an association of the well-known pigment gene SLC45A2 as well as associations at RCC2 and CLPTM1L with BCC in Hispanic/Latinos. We examine these BCC loci for association with cutaneous squamous cell carcinoma (cSCC) in 16,407 SCC cases and 762,486 controls of European ancestry, and 33 SNPs show evidence of association. Our study findings provide important insights into the genetic basis of BCC and cSCC susceptibility., (© 2024. The Author(s).)

Background/purpose: Cutaneous squamous cell carcinoma (cSCC) is one of the most common malignancies worldwide. While several environmental risk factors for cSCC are well established, there is conflicting evidence on cigarette smoking (and its potential causal effect) and cSCC risk. Furthermore, it is unclear if these potential associations represent causal, modifiable risk factors for cSCC development. This study aims to assess the nature of the associations between cigarette smoking traits (smoking initiation, amount smoked, and lifetime smoking exposure) and cSCC risk using two-sample Mendelian randomization analyses., Methods: Genetic instruments, based on common genetic variants associated with cigarette smoking traits ( P  < 5 × 10 -8 ), were derived from published genome-wide association studies (GWASs). For cSCC, we used GWAS summary statistics from the Kaiser Permanente GERA cohort (7701 cSCC cases and 60,167 controls; all non-Hispanic Whites)., Results: We found modest evidence that genetically determined lifetime smoking was associated with cSCC (inverse-variance weighted method: OR[95% CI] = 1.47[1.09-1.98]; P  = .012), suggesting it may be a causal risk factor for cSCC. We did not detect any evidence of association between genetically determined smoking initiation or amount smoked and cSCC risk., Conclusion: Study findings highlight the importance of smoking prevention and may support risk-stratified cSCC screening strategies based on carcinogen exposure and other genetic and clinical information., Competing Interests: None disclosed., (© 2023 by the American Academy of Dermatology, Inc. Published by Elsevier Inc.)

Having a chronic disease is one of the most consistent factors associated with vaccine uptake for adults in the general population, but vaccination beliefs and behaviors specific to those with chronic skin diseases have not been explored. The objective of this study was to explore factors associated with vaccine uptake and barriers to vaccination in adults with psoriasis and eczema. Virtual, video-based semi-structured interviews were performed with adults who self-reported a diagnosis of psoriasis or eczema. Interviews explored themes around healthcare decision making, perceived risks/benefits to vaccination, barriers, and vaccine knowledge. Thematic analysis was used to analyze the data. Of 34 study participants, 25 participants (74%) were females and 9 (26%) were males, with a mean age of 50.8 years (SD: 16.4, range: 24-71 yrs). Half of participants (n = 17) had psoriasis, and half (n = 17) had eczema. Participants recognized both personal and societal benefits to vaccines. Common vaccination barriers identified were access to appointments, concerns about side effects, and misinformation. Physicians, friends/family, and media, including internet resources, were health information resources identified by patients. These results summarize the unique patient perspective around vaccine uptake in adults with eczema and psoriasis and represent an important first step in a multi-pronged approach to improve vaccination rates in adults with chronic skin diseases., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

Objectives: Patients with atopic dermatitis (AD), also known as eczema, may be at an increased risk for malignancies compared with patients without AD; however, incidence rates (IRs) of malignancies in patients with moderate to severe AD are largely unknown. The objective of this study was to evaluate and compare IRs of malignancies in adults with moderate to severe AD (aged ≥18 years)., Design: Retrospective cohort study using data from a Kaiser Permanente Northern California (KPNC) cohort. AD severity classification was adjudicated with medical chart review. Covariates and stratification variables included age, sex and smoking status., Setting: Data were obtained from the KPNC healthcare delivery system in northern California, USA. Cases of AD were defined by outpatient dermatologist-rendered codes and prescriptions of topical therapy or phototherapy (moderate) or systemic treatment (severe)., Participants: KPNC health plan members with moderate or severe AD (2007-2018)., Primary and Secondary Outcome Measures: Malignancy IRs and 95% CIs per 1000 person-years were calculated., Results: 7050 KPNC health plan members with moderate and severe AD met eligibility criteria for inclusion. IRs (95% CI) were highest for non-melanoma skin cancer (NMSC) in patients with moderate and severe AD (4.6 (95% CI 3.9 to 5.5) and 5.9 (95% CI 3.8 to 9.2), respectively) and breast cancer (2.2 (95% CI 1.6 to 3.0) and 0.5 (95% CI 0.1 to 3.9), respectively). Except for breast cancer, which was only evaluated in women, malignancies were higher (with non-overlapping CIs) in patients with moderate and moderate to severe AD in men versus women for basal cell carcinoma and NMSC and in former versus never smokers for NMSC and squamous cell carcinoma., Conclusions: This study estimated IRs of malignancies in patients with moderate and severe AD and provides valuable information for dermatology clinicians and ongoing clinical trials in these populations., Competing Interests: Competing interests: MMH, FX, CPQ and SBS are full-time employees of KPNC and received payment from Pfizer Inc. for the study used in this publication. JG is a former employee and a shareholder of Pfizer Inc. ARL is an employee and shareholder of Pfizer Inc. MMA received royalty payments from UptoDate for publications related to skin cancer and also received grant funding to her institution from Pfizer Inc. for the study described in this publication., (© Author(s) (or their employer(s)) 2023. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)

Background: The liver is the most common organ of the body that is at risk of getting affected by hydatid cyst (75%). All lobes of the liver can be involved with the formation of hydatid cyst, but the right lobe is more involved than the left lobe. The rate of involvement of liver dome and segments 7 and 8 of the right lobe has not been reported so far, but the best treatment for liver hydatid cyst has been found to be surgery., Materials and Methods: In this study, 240 patients with liver hydatid cyst underwent surgery from 2005 to 2017. In this retrospective study, the variables of gender, age, number of liver cysts, involvement of lobe and segments, simultaneous involvement of liver and lung, laparotomy, thoracotomy, the number of patients referred due to the lack of finding cysts in laparotomy, and surgical complications were analyzed., Results: The results showed that the majority of patients were males with age ranging from 8 to 68 years. Right lobe involvement was observed in most of the patients. About 62 patients showed involvement of liver dome and segments 7 and 8. Therefore, 62 patients underwent thoracotomy according to the criteria introduced and the rest of the patients ( n = 178) underwent laparotomy. The results showed that there was a potential for capitonnage in 46 patients in thoracotomy. The pain score was 4-5 according to the VAS criterion. The rate of using analgesic drug did not show significant difference between the two methods., Conclusion: During the manipulation, cysts might be ruptured and give rise to complications such as spread of the disease, shock, and anaphylaxis, which may be followed by legal complaints. Therefore, in order to perform the surgery successfully, a new method along with computed tomography (CT) scan has been introduced in this study, which can be very helpful., Competing Interests: There are no conflicts of interest., (Copyright: © 2023 Journal of Family Medicine and Primary Care.)

Patients with versus without atopic dermatitis may have a greater risk of cardiovascular events, and the risk increases with severity of atopic dermatitis. The incidence of cardiovascular events in the population of patients with moderate-to-severe atopic dermatitis is largely unknown. This retrospective study evaluates incidence rates of cardiovascular events in patients aged ≥12 years with moderate-to-severe atopic dermatitis in a cohort of Kaiser Permanente Northern California health care system members without recognized risk factors for adverse events. Patients with moderate-to-severe atopic dermatitis, as defined by dermatologist-rendered code and prescription history between 2007 and 2018, were included. Major adverse cardiovascular events, venous thrombotic events, deep vein thrombosis, and pulmonary embolisms were identified via International Classification of Diseases codes. Stratification variables included age, sex, race, smoking history, and diabetes. Incidence rates per 1000 person-years were calculated by the number of patients with an incident event divided by the total person-years of observation. Among 8197 patients with moderate-to-severe atopic dermatitis, incidence rates per 1000 person-years (95% confidence interval) for major adverse cardiovascular events, venous thrombotic events, deep vein thrombosis, and pulmonary embolism were: 2.6 (2.1-3.2), 2.0 (1.5-2.5), 1.6 (1.2-2.1), and 0.7 (0.5-1.0), respectively. Incidence rates for all events were higher for older versus younger patients, patients with versus without diabetes, former smokers versus patients who had never smoked, and men versus women, except for pulmonary embolisms, which were higher in women. This study estimated the incidence of cardiovascular events in patients with moderate-to-severe atopic dermatitis and provides valuable information for clinicians., Competing Interests: Monique M. Hedderson, Fei Xu, Charles P. Quesenberry, and Sneha Sridhar are full-time employees of Kaiser Permanente Northern California and received grant funding from Pfizer Inc. for the study discussed in this publication. Jamie Geier is a former employee of and shareholder of Pfizer Inc. Adina R. Lemeshow is an employee and shareholder of Pfizer Inc. Maryam M. Asgari received royalty payments from UptoDate for publications related to skin cancer and received grant funding to her institution from Pfizer Inc. for the study described in this publication., (Copyright: © 2022 Hedderson et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)

Competing Interests: Conflicts of interest None disclosed.

Introduction: Carcinoid tumors are malignant neoplasms of neuroendocrine cells. This study tended to evaluate the demographic and rare clinical characteristics of patients with thoracic carcinoid tumor during 2006-2016 at Razi and Aria Hospitals in Rasht., Materials and Methods: The present study was performed on records of 43 patients with lung carcinoid tumors referred to Razi and Aria Hospitals of Rasht during 2006-2016. Information on age, gender, rare clinical symptoms, smoking history, diagnosis tools, treatment, and outcome were analyzed., Results: Of 43 patients treated with definitive diagnosis of carcinoid tumor pathology, 31 patients had typic carcinoid tumor and 12 patients with atypic carcinoma (mean age 43.14 ± 15.16 years). The most common clinical symptom was cough and hemoptysis. Two cases presented with cushing syndrome, The most common diagnostic method in this study was simultaneous use of both CT scans and bronchoscopy. In 95.3% of cases, the tumor was pulmonary and in 4.7% of cases, it was extrapulmonary. Right lower lobe was the most common site of tumors and most of the surgeries used were lobectomy., Conclusion: This study showed that the most common clinical sign of thoracic carcinoid is cough and the tumor is pulmonary in 95.3% of cases. Right lower lobe was the most common site of tumors and most of the surgeries used were lobectomy. outcome was good., Competing Interests: There are no conflicts of interest., (Copyright: © 2022 Journal of Family Medicine and Primary Care.)

Competing Interests: Conflicts of interest None disclosed.

Actinic keratosis (AK) is a common precancerous cutaneous neoplasm that arises on chronically sun-exposed skin. AK susceptibility has a moderate genetic component, and although a few susceptibility loci have been identified, including IRF4, TYR, and MC1R, additional loci have yet to be discovered. We conducted a genome-wide association study of AK in non-Hispanic white participants of the Genetic Epidemiology Research on Adult Health and Aging (GERA) cohort (n = 63,110, discovery cohort), with validation in the Mass-General Brigham (MGB) Biobank cohort (n = 29,130). We identified eleven loci (P < 5 × 10 -8 ), including seven novel loci, of which four novel loci were validated. In a meta-analysis (GERA + MGB), one additional novel locus, TRPS1, was identified. Genes within the identified loci are implicated in pigmentation (SLC45A2, IRF4, BNC2, TYR, DEF8, RALY, HERC2, and TRPS1), immune regulation (FOXP1 and HLA-DQA1), and cell signaling and tissue remodeling (MMP24) pathways. Our findings provide novel insight into the genetics and pathogenesis of AK susceptibility., (© 2022. The Author(s).)

Importance: Despite the efficacy of immune checkpoint inhibitors (ICIs), cutaneous immune-related adverse events (cirAEs) occur in 20% to 40% of all treated patients. To our knowledge, little is known about the predictive value of these cutaneous eruptions and their subtypes regarding cancer survival., Objective: To determine the association of developing cirAEs following treatment with anti-programmed cell death 1 (PD-1) or anti-programmed cell death ligand 1 (PD-L1) therapy with patient survival., Design, Setting, and Participants: This retrospective cohort study used data from the TriNetX Diamond Network, a database of health records and claims data from more than 200 million US and European patients, to conduct a population-level cohort analysis. The study included 7008 eligible patients who developed cirAEs after treatment with anti-PD-1 or anti-PD-L1 therapy for malignant neoplasms of digestive organs, bronchus or lung, melanoma of skin, and urinary tract who were identified through the TriNetX Diamond Network along with 7008 matched controls., Exposures: Development of cirAEs within 6 months following anti-PD-1 or anti-PD-L1 therapy., Main Outcomes and Measures: A 6-month analysis using a Cox proportional hazards model was performed to determine the association of cirAEs with overall survival after adjusting for demographic characteristics, cancer type, and cancer stage., Results: A total of 7008 patients (3036 women [43.3%]; mean [SD] age, 68.2 [11.2] years) were matched to 7008 (3044 women [43.4%]; mean [SD] age, 68.3 [11.1] years) controls. Pruritus (hazard ratio [HR], 0.695; 95% CI, 0.602-0.803; P < .001), drug eruption (HR, 0.755; 95% CI, 0.635-0.897; P = .001), xerosis (HR, 0.626; 95% CI, 0.469-0.834; P = .001), nonspecific rashes (HR, 0.704; 95% CI, 0.634-0.781; P < .001), and appearance of any cirAE (HR, 0.778; 95% CI, 0.726-0.834; P < .001) were significantly protective of mortality using a Benjamini-Hochberg correction with a significance level of .05. Additionally, psoriasis (HR, 0.703; 95% CI, 0.497-0.994; P = .045) and lichen planus/lichenoid dermatitis (HR, 0.511; 95% CI, 0.279-0.939; P = .03) were significant. Eczematous dermatitis (HR, 0.612; 95% CI, 0.314-1.195), vitiligo (HR, 0.534; 95% CI, 0.254-1.123), bullous pemphigoid (HR, 0.524; 95% CI, 0.140-1.956), and Grover disease (HR, 0.468; 95% CI, 0.115-1.898) were all associated with strong protective clinical effects., Conclusions and Relevance: The results of this cohort study suggest that the development of cirAEs is strongly associated with response to ICI therapy and patient survival.

Background: Actinic keratoses (AK) are rough scaly patches that arise on chronically ultraviolet-exposed skin and can progress to keratinocyte carcinoma., Objective: This analysis examined the literature related to the management of AK to provide evidence-based recommendations for treatment. Grading, histologic classification, natural history, risk of progression, and dermatologic surveillance of AKs are also discussed., Methods: A multidisciplinary Work Group conducted a systematic review to address 5 clinical questions on the management of AKs and applied the Grading of Recommendations, Assessment, Development, and Evaluation approach for assessing the certainty of the evidence and formulating and grading clinical recommendations. Graded recommendations were voted on to achieve consensus., Results: Analysis of the evidence resulted in 18 recommendations., Limitations: This analysis is based on the best available evidence at the time it was conducted. The pragmatic decision to limit the literature review to English language randomized trials may have excluded data published in other languages or limited identification of relevant long-term follow-up data., Conclusions: Strong recommendations are made for using ultraviolet protection, topical imiquimod, topical 5-fluorouracil, and cryosurgery. Conditional recommendations are made for the use of photodynamic therapy and diclofenac for the treatment of AK, both individually and as part of combination therapy regimens., (Copyright © 2021 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved.)

Importance: There is a paucity of evidence to guide physicians regarding prevention strategies for cutaneous squamous cell carcinoma (CSCC) in solid organ transplant recipients (SOTRs)., Objective: To examine the development and results of a Delphi process initiated to identify consensus-based medical management recommendations for prevention of CSCC in SOTRs., Evidence Review: Dermatologists with more than 5 years' experience treating SOTRs were invited to participate. A novel actinic damage and skin cancer index (AD-SCI), consisting of 6 ordinal stages corresponding to an increasing burden of actinic damage and CSCC, was used to guide survey design. Three sequential web-based surveys were administered from January 1, 2019, to December 31, 2020. Pursuant to Delphi principles, respondents thoroughly reviewed all peer responses between rounds. Supplemental questions were also asked to better understand panelists' rationale for their responses., Findings: The Delphi panel comprised 48 dermatologists. Respondents represented 13 countries, with 27 (56%) from the US. Twenty-nine respondents (60%) were Mohs surgeons. Consensus was reached with 80% or higher concordance among respondents when presented with a statement, question, or management strategy pertaining to prevention of CSCC in SOTRs. A near-consensus category of 70% to less than 80% concordance was also defined. The AD-SCI stage-based recommendations were established if consensus or near-consensus was achieved. The panel was able to make recommendations for 5 of 6 AD-SCI stages. Key recommendations include the following: cryotherapy for scattered actinic keratosis (AK); field therapy for AK when grouped in 1 anatomical area, unless AKs are thick in which case field therapy and cryotherapy were recommended; combination lesion directed and field therapy with fluorouracil for field cancerized skin; and initiation of acitretin therapy and discussion of immunosuppression reduction or modification for patients who develop multiple skin cancers at a high rate (10 CSCCs per year) or develop high-risk CSCC (defined by a tumor with approximately ≥20% risk of nodal metastasis). No consensus recommendation was achieved for SOTRs with a first low risk CSCC., Conclusions and Relevance: Physicians may consider implementation of panel recommendations for prevention of CSCC in SOTRs while awaiting high-level-of-evidence data. Additional clinical trials are needed in areas where consensus was not reached.

The current opioid epidemic warrants a better understanding of genetic and environmental factors that contribute to opioid addiction. Here we report an increased prevalence of vitamin D (VitD) deficiency in patients diagnosed with opioid use disorder and an inverse and dose-dependent association of VitD levels with self-reported opioid use. We used multiple pharmacologic approaches and genetic mouse models and found that deficiencies in VitD signaling amplify exogenous opioid responses that are normalized upon restoration of VitD signaling. Similarly, physiologic endogenous opioid analgesia and reward responses triggered by ultraviolet (UV) radiation are repressed by VitD signaling, suggesting that a feedback loop exists whereby VitD deficiency produces increased UV/endorphin-seeking behavior until VitD levels are restored by cutaneous VitD synthesis. This feedback may carry the evolutionary advantage of maximizing VitD synthesis. However, unlike UV exposure, exogenous opioid use is not followed by VitD synthesis (and its opioid suppressive effects), contributing to maladaptive addictive behavior., (Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).)

Background: The percentage of female dermatologists has increased from 6.9% in 1970 to 48.9% in 2017. Despite the changing gender composition of the dermatologist workforce, it is unknown whether there are gender-based differences in dermatology practice locations., Objective: This study aimed to characterize gender-based differences in dermatology practice locations across the United States., Methods: A cross-sectional study of all dermatologists in the 2020 Centers for Medicare and Medicaid Services Physician Compare Database was performed. The number of self-identified female dermatologists and total dermatologists in each county and state was tabulated, and Spearman's correlation coefficients between county-level demographic and socioeconomic characteristics and female practices were calculated., Results: Among 11,911 dermatologists, 5945 (49.9%) self-identified as female and 5966 (50.1%) as male. Of the 1052 counties with a dermatologist, 291 (27.7%) had no female dermatologist and 149 (14.2%) had no male dermatologist. The percentage of female dermatologists in each state ranged from 18.4% to 62.2%. Female dermatologists practiced more in areas with a higher percentage of democratic voters ( r  = +0.22) and higher median household income ( r  = +0.18), and less in rural counties ( r  = -0.18) or counties with higher uninsured rates (r = -0.11)., Conclusion: Female dermatologists remain significantly underrepresented in some regions in the United States, particularly in the Mountain states and rural counties. As women continue entering the dermatologist workforce, these results can inform workforce planning strategies to improve the distribution and accessibility of dermatologists across the United States., Competing Interests: None., (© 2021 Published by Elsevier Inc. on behalf of Women's Dermatologic Society.)

Basal cell carcinoma (BCC) and squamous cell carcinoma (SCC) are both derived from epidermal keratinocytes but are phenotypically diverse. To improve the understanding of keratinocyte carcinogenesis, it is critical to understand epigenetic alterations, especially those that govern gene expression. We examined changes to the enhancer-associated histone acetylation mark H3K27ac by mapping matched tumor-normal pairs from 11 patients (five with BCC and six with SCC) undergoing Mohs surgery. Our analysis uncovered cancer-specific enhancers on the basis of differential H3K27ac peaks between matched tumor-normal pairs. We also uncovered biological pathways potentially altered in keratinocyte carcinoma, including enriched epidermal development and Wnt signaling pathways enriched in BCCs and enriched immune response and cell activation pathways in SCCs. We also observed enrichment of transcription factors that implicated SMAD and JDP2 in BCC pathogenesis and FOXP1 in SCC pathogenesis. On the basis of these findings, we prioritized three loci with putative regulation events (FGFR2 enhancer in BCC, intragenic regulation of FOXP1 in SCC, and WNT5A promoter in both subtypes) and validated our findings with published gene expression data. Our findings highlight unique and shared epigenetic alterations in histone modifications and potential regulators for BCCs and SCCs that likely impact the divergent oncogenic pathways, paving the way for targeted drug discoveries., (Copyright © 2021 The Authors. Published by Elsevier Inc. All rights reserved.)

Although cutaneous squamous cell carcinoma (cSCC) is one of the most common malignancies in individuals of European ancestry, the incidence of cSCC in Hispanic/Latinos is also increasing. cSCC has both a genetic and environmental etiology. Here, we examine the role of genetic ancestry, skin pigmentation, and sun exposure in Hispanic/Latinos and non-Hispanic whites on cSCC risk. We observe an increased cSCC risk with greater European ancestry (P = 1.27 × 10 -42 ) within Hispanic/Latinos and with greater northern (P = 2.38 × 10 -65 ) and western (P = 2.28 × 10 -49 ) European ancestry within non-Hispanic whites. These associations are significantly, but not completely, attenuated after considering skin pigmentation-associated loci, history of actinic keratosis, and sun-protected versus sun-exposed anatomical sites. We also report an association of the well-known pigment variant Ala111Thr (rs1426654) at SLC24A5 with cSCC in Hispanic/Latinos. These findings demonstrate a strong correlation of northwestern European genetic ancestry with cSCC risk in both Hispanic/Latinos and non-Hispanic whites, largely but not entirely mediated through its impact on skin pigmentation.

Histone deacetylase inhibitors, including valproic acid, selectively induce cellular differentiation and apoptosis in melanoma cells. No published pharmacoepidemiologic studies have explored the association between valproic acid use and melanoma risk. We conducted a retrospective cohort study of adult white Kaiser Permanente Northern California members (n = 2,213,845) from 1997 to 2012 to examine the association between valproic acid use and melanoma risk. Melanoma hazard ratios (HRs) and 95% CIs were estimated using Cox proportional hazards models, adjusted for age, sex, calendar year, and healthcare use. Melanoma incidence was lower among exposed individuals (64.0 exposed vs. 96.2 unexposed per 100,000 person-years, P < 0.001). Exposed individuals had a lower incident melanoma risk (HR = 0.64; 95% CI = 0.51-0.79) in unadjusted analysis, and the estimate was attenuated but significant in adjusted analysis (HR = 0.76, 95% CI = 0.61-0.94). Cumulative exposure based on the number of fills revealed a biologically implausible inverse dose-effect. Exposed individuals were more likely to present with local than regional or distant disease at diagnosis (80/82; 97.6% exposed vs. 12,940/13,971; 92.6% unexposed). Our findings suggest that valproic acid exposure may be associated with decreased melanoma risk and progression, but the cumulative exposure analyses suggest that the observation may be owing to residual confounding., (Copyright © 2020 The Authors. Published by Elsevier Inc. All rights reserved.)

Importance: Topical calcineurin inhibitors (TCIs), primarily used to treat atopic dermatitis (AD), carry a black box label warning users about the potential for increased skin cancer risk. The risk associated with keratinocyte carcinoma (KC), the most common cancer, defined as basal cell carcinoma (BCC) and squamous cell carcinoma (SCC), remains poorly defined because findings from large-scale postmarketing surveillance studies have not been reported., Objectives: To examine KC risk overall and by subtype (BCC and SCC) among adults with AD exposed to TCIs compared with those exposed to topical corticosteroids (primary comparator group) and those unexposed to TCIs or topical corticosteroids (alternative comparator group) as well as alterations in risk with TCI dose, frequency, and duration of exposure., Design, Setting, and Participants: A retrospective cohort study was conducted at Kaiser Permanente Northern California, a large, integrated health care delivery system, of adults 40 years or older (n = 93 746) with a physician-rendered diagnosis of AD or dermatitis. Patients who were diagnosed from January 1, 2002, to December 31, 2013, were included, with follow-up through December 31, 2017. Data analysis was conducted from June 1, 2016, to October 1, 2018., Exposures: Time-varying pharmacy-dispensed TCI exposure (n = 7033) over the study period was compared with topical corticosteroids (n = 73 674) and no TCI or topical corticosteroid exposure (n = 46 141)., Main Outcomes and Measures: Electronic pathologic testing-validated incident KCs (n = 7744)., Results: Among a cohort of 93 746 members, the mean (SD) age was 58.5 (12.7) years, and 55 023 patients (58.7%) were women. Multivariable Cox proportional hazards regression revealed no association between TCI exposure and KC risk (adjusted hazard ratio [aHR], 1.02; 95% CI, 0.93-1.13) compared with topical corticosteroid exposure. Similarly, there were no significant differences in BCC risk (aHR, 1.01; 95% CI, 0.90-1.14, TCI vs topical corticosteroids) or SCC risk (aHR, 0.94; 95% CI, 0.82-1.08, TCI vs topical corticosteroids). Changing the comparator group to unexposed individuals yielded similar findings (aHR, 1.04; 95% CI, 0.91-1.19, TCI vs unexposed for basal cell carcinoma). There were no associations between TCI dose, frequency, and duration of use and BCC, SCC, or overall KC risk., Conclusions and Relevance: The results of this postmarketing surveillance study of adult health plan members with AD revealed no apparent association between TCI exposure and overall KC, BCC, or SCC risk. Secondary analyses examining dose, frequency, and duration of TCI exposure revealed no associations. These findings suggest that use of TCIs may be safe with respect to KC risk among adults with AD.

Importance: Vitamin D deficiency is associated with chronic pain syndromes and higher opioid use among cancer patients, but its association with opioid use among opioid-naïve subjects following a major surgical procedure with acute pain has not been explored., Objective: To determine the association between serum 25-hydroxyvitamin D (25(OH)D) levels, opioid use, and opioid use disorder., Methods: We identified commercially insured subjects aged 18-64 years with available perioperative serum 25-hydroxyvitamin D (25D) levels who underwent one of nine major surgical procedures in 2000-2014. Primary outcomes were dose and duration of opioid use measured using pharmacy claims. Secondary outcome was opioid use disorder captured using diagnosis codes. Multivariable negative binomial models with generalized estimating equations were performed examining the association between 25D levels and postoperative opioid use measures, adjusting for age, sex, race/ethnicity, Charlson score, education, income, latitude, and season of blood draw. Adjusted Cox regression was used to examine the association with opioid use disorder., Results: Among 5446 subjects, serum 25(OH)D was sufficient (≥ 20 ng/mL) among 4349 (79.9%) subjects, whereas 837 (15.4%) had insufficient (12 to < 20 ng/mL) and 260 (4.8%) had deficient (< 12 ng/mL) levels. On multivariable analysis, as compared with subjects with sufficient 25(OH)D levels, subjects with deficient 25(OH)D levels had 1.7 more days (95% CI 0.76, 2.58) of opioid use per year and had 98.7 higher morphine milligram equivalent dose (95% CI 55.7, 141.8) per year. Among 11,713 study cohort, subjects with deficient 25(OH)D levels were more likely to be diagnosed with opioid use disorders (HR 2.41; 95% CI 1.05, 5.52)., Conclusion: Patients undergoing common surgical procedures with deficient 25D levels are more likely to have higher opioid use and an increased risk of opioid use disorder compared to those with sufficient levels. Serum 25D levels may serve as a biomarker to identify subjects at increased risk of opioid misuse.

Background: Cutaneous squamous cell carcinoma (cSCC) is the second most common malignancy in the United States, and its incidence is increasing. Ultraviolet radiation is the main environmental risk factor for cSCCs; thus, they tend to arise on sun-exposed skin. Most publications cite the head and neck as the predominant location for cSCCs, but these papers do not account for the differential anatomic predication of cSCCs by sex. No prior studies have examined the differential distribution of cSCCs by sex, particularly invasive cSCCs that have the potential for recurrence and metastasis., Objective: We examined the association between cSCC tumor features, including anatomic site and invasiveness, by key patient features, including age and sex., Methods: Using an institutional cSCC registry, we identified 618 non-Hispanic white patients diagnosed with 2,111 histologically-confirmed cSCCs between 2000-2016., Results: We found differential anatomic distributions of cSCC by patient sex. Men were more likely to have cSCCs arise on the head and neck (51.7%), whereas women were more likely to have cSCCs develop on the lower extremity (41.2%). Stratification by dichotomized age (younger [<65 years] vs. older [≥65 years]) revealed that nearly half of invasive cSCCs (47.7%) among older women arose on the lower extremities, whereas approximately half of the invasive cSCCs (52.4%) arose on the head and neck among older men., Conclusion: Lower extremities can be easily overlooked, particularly when practitioners perform waist-up-only skin examinations in time-limited settings. Understanding the anatomic predilection for invasive cSCCs by patient characteristics, including our findings, which suggest that the lower extremities are an important anatomic site for invasive cSCCs among women, can help further inform skin cancer screening and prevention efforts., (© 2020 The Author(s).)

Recent large-scale GWAS and large epidemiologic studies have accelerated the discovery of genes and environmental factors that contribute to the risk of keratinocyte carcinoma (KC), which includes basal cell carcinoma (BCC) and squamous cell carcinoma (SCC). This Review summarizes the genomic regions associated with SCC and BCC risk, examines the genetic overlap between SCC and BCC, and discusses biological pathways involved in SCC and BCC development. Next, we review environmental factors that are associated with KC risk, including those that are shared between SCC and BCC as well as others that associated with only one type of KC. We conclude with a critical appraisal of current research and potential directions for future research.

The incidence of basal cell carcinoma (BCC) is higher among men than women. Susceptibility loci for BCC have been identified through genome-wide association studies, and two previous studies have found polygenic risk scores (PRS) to be significantly associated with the risk of BCC. However, to our knowledge, sex-stratified PRS analyses examining the genetic contribution to BCC risk among men and women have not been previously reported. To quantify the contribution of genetic variability on the BCC risk by sex, we derived a polygenic risk score and estimated the genetic relative risk distribution for men and women. Using 29 published single nucleotide polymorphisms, we found that the estimated relative risk of BCC increases with higher percentiles of the polygenic risk score. For men, the estimated risk of BCC is twice the average population risk at the 88th percentile, while for women, this occurs at the 99th percentile. Our findings indicate that there is a significant impact of genetic variation on the risk of developing BCC and that this impact may be greater for men than for women. Polygenic risk scores may be clinically useful tools for risk stratification, particularly in combination with other known risk factors for BCC development., (Copyright © 2019 The Authors. Published by Elsevier Inc. All rights reserved.)

An estimated 17-year lag exists between evidence generation and its integration into routine clinical care. The field of implementation science has emerged to close this gap by applying rigorous methods to systematically study the obstacles and facilitators of the uptake of evidence-based practices. However, implementation science has not gained wide traction in dermatology. In this narrative review, we use literature and expert input to introduce implementation science and key frameworks for implementing interventions and evaluating their uptake. We then highlight opportunities for dermatology-specific interventions at the patient-, provider-, system-, and population-levels, and advocate for the field's expansion into dermatology., (Copyright © 2019 The Authors. Published by Elsevier Inc. All rights reserved.)

Keratinocyte carcinoma (KC), defined as squamous cell carcinoma and basal cell carcinoma, is the most common malignancy among white, non-Hispanic renal transplant recipients. Although recent genome-wide association studies reported that class II HLA is associated with KC risk, epidemiologic data on HLA type and KC risk in renal transplant recipients is limited. Using an institutional cohort of white, non-Hispanic renal transplant recipients transplanted between 1993 and 2017, we examined the association between pretransplant molecular HLA types and KC risk. Posttransplant KCs were captured using the International Classification of Diseases codes and validated using pathology reports. Cox proportional hazards regression models were used to estimate hazard ratios of incident KC, squamous cell carcinoma, and basal cell carcinoma, adjusting for age, male sex, history of KC, Charlson comorbidity index, HLA mismatch, transplant type, year of transplant, and the type of immunosuppression. Among 617 subjects (mean age 53 years, 67% male), 10% developed posttransplant KC. Multivariable Cox regression analyses showed HLA-DRB1∗13 was associated with KC risk (hazard ratio, 1.84; 95% confidence interval, 1.00-3.38) and squamous cell carcinoma risk (hazard ratio, 2.24; 95% confidence interval, 1.12-4.49), whereas HLA-DRB1∗14 (hazard ratio, 2.81; 95% confidence interval, 1.14-6.91) was associated with basal cell carcinoma risk. Our findings suggest that a subset of renal transplant recipients with specific HLA polymorphisms may be at increased KC risk., (Copyright © 2019 The Authors. Published by Elsevier Inc. All rights reserved.)

Cutaneous squamous cell carcinoma (SCC) is one of the most common cancers in the United States. Previous genome-wide association studies (GWAS) have identified 14 single nucleotide polymorphisms (SNPs) associated with cutaneous SCC. Here, we report the largest cutaneous SCC meta-analysis to date, representing six international cohorts and totaling 19,149 SCC cases and 680,049 controls. We discover eight novel loci associated with SCC, confirm all previously associated loci, and perform fine mapping of causal variants. The novel SNPs occur within skin-specific regulatory elements and implicate loci involved in cancer development, immune regulation, and keratinocyte differentiation in SCC susceptibility.

Background: Genome-wide association studies (GWAS) have identified thousands of susceptibility variants, although most have been associated with small individual risk estimates that offer little predictive value. However, combining multiple variants into polygenic risk scores (PRS) may be more informative. Multiple studies have developed PRS composed of GWAS-identified variants for cutaneous cancers. This review highlights data from these studies., Objectives: To review published GWAS and PRS studies for melanoma, cutaneous squamous cell carcinoma (cSCC) and basal cell carcinoma (BCC), and discuss their potential clinical utility., Methods: We searched PubMed and the National Human Genome Research Institute-European Bioinformatics Institute GWAS catalogue to identify relevant studies., Results: Results from 21 GWAS (11 melanoma, 3 cSCC, 7 BCC) and 11 PRS studies are summarized. Six loci in pigmentation genes overlap between these three cancers (ASIP/RALY, IRF4, MC1R, OCA2, SLC45A2 and TYR). Additional loci overlap for cSCC/BCC and BCC/melanoma, but no other loci are shared between cSCC and melanoma. PRS for melanoma show roughly two-to-threefold increases in risk and modest improvements in risk prediction (2-7% increases). PRS are associated with twofold and threefold increases in risk of cSCC and BCC, respectively, with small improvements (2% increase) in predictive ability., Conclusions: Existing data indicate that PRS may offer small, but potentially meaningful, improvements to risk prediction. Additional research is needed to clarify the potential utility of PRS in cutaneous carcinomas. Clinical translation will require well-powered validation studies incorporating known risk factors to evaluate PRS as tools for screening. What's already known about this topic? Over 50 susceptibility loci for melanoma, basal cell carcinoma (BCC) and cutaneous squamous cell carcinoma (cSCC) have been identified in genome-wide association studies (GWAS). Polygenic risk scores (PRS) using variants identified from GWAS have also been developed for melanoma, BCC and cSCC, and investigated with respect to clinical risk prediction. What does this study add? This review provides an overview of GWAS findings and the potential clinical utility of PRS for melanoma, BCC and cSCC., (© 2019 British Association of Dermatologists.)