A Functional Role for Antibodies in Tuberculosis.

While a third of the world carries the burden of tuberculosis, disease control has been hindered by a lack of tools, including a rapid, point-of-care diagnostic and a protective vaccine. In many infectious diseases, antibodies (Abs) are powerful biomarkers and important immune mediators. However, in Mycobacterium tuberculosis (Mtb) infection, a discriminatory or protective role for humoral immunity remains unclear. Using an unbiased antibody profiling approach, we show that individuals with latent tuberculosis infection (Ltb) and active tuberculosis disease (Atb) have distinct Mtb-specific humoral responses, such that Ltb infection is associated with unique Ab Fc functional profiles, selective binding to FcγRIII, and distinct Ab glycosylation patterns. Moreover, compared to Abs from Atb, Abs from Ltb drove enhanced phagolysosomal maturation, inflammasome activation, and, most importantly, macrophage killing of intracellular Mtb. Combined, these data point to a potential role for Fc-mediated Ab effector functions, tuned via differential glycosylation, in Mtb control.

Complementary and alternative medicine for alopecia areata: A systematic review.

BACKGROUND: Despite high use of complementary and alternative medicine (CAM) for alopecia areata (AA), efficacy and safety remain unclear. OBJECTIVE: To identify all CAM therapies studied for treatment of AA. Outcomes of interest included disease course and psychologic well-being. METHODS: PubMed and Embase were searched to identify English articles containing original data investigating CAM in individuals with AA from 1950-2018. Quality was assessed with Oxford Centre for Evidence Based Medicine criteria. RESULTS: Of 1015 initial citations, 16 articles met inclusion criteria: 5 randomized controlled trials, 5 prospective controlled cohorts, 4 prospective noncontrolled cohorts, 1 retrospective cohort, and 1 case series. CAM therapies with best evidence and efficacy for hair growth in AA include essential oil aromatherapy, topical garlic, and oral glucosides of peony with compound glycyrrhizin. Hypnosis and mindfulness psychotherapy represent low-quality evidence for improvement of psychologic and quality of life outcomes. Adverse events were rare and mild for all therapies evaluated. LIMITATIONS: Inconsistent or poorly reported study methodology and nonstandardized outcomes limit the conclusions that can be made from these studies. CONCLUSIONS: This work serves to inform physician treatment of patients with AA seeking CAM while encouraging further investigation into these therapies to address some of the therapeutic challenges of AA.

Geographic disparities in access to scalp cooling for the prevention of chemotherapy-induced alopecia in the United States.

BACKGROUND: Chemotherapy-induced alopecia is psychologically challenging for patients undergoing cancer treatment, and scalp cooling has been shown to prevent or decrease the hair loss. OBJECTIVE: To evaluate whether access to scalp cooling varies by geographic area in the United States. METHODS: Cancer treatment centers offering scalp cooling were identified using data from the Rapunzel Project. Medicare claims data were queried to evaluate the number of chemotherapy infusions occurring in each zip code in the United States. Geographic distribution of chemotherapy infusions and scalp cooling centers was determined using ArcGIS software. The average distance from the geographic center of all 5-digit zip codes in which chemotherapy infusions occur to the nearest scalp cooling center was calculated in miles. RESULTS: There are 366 chemotherapy infusion centers in the United States that offer scalp cooling. Overall, 43.9% of Medicare-billed chemotherapy infusions in the United States occur in zip codes less than 12.5 miles from a scalp cooling center, 24.8% occur between 12.5 and 49.9 miles away, and 31.3% occur more than 50 miles away. LIMITATIONS: Our results are only generalizable to patients seen at Medicare-accepting institutions in the United States. CONCLUSIONS: Geographic disparities affect which patients can access scalp cooling therapy, and implementation in suburban and rural areas would increase access for patients who wish to preserve their hair while undergoing chemotherapy.

Brigham Eyebrow Tool for Alopecia: A Reliable Assessment of Eyebrow Alopecia Areata.

There are no tools to evaluate eyebrow involvement in patients with alopecia areata. We developed and assessed the reliability of the Brigham Eyebrow Tool for Alopecia (BETA) as a quantitative evaluation of eyebrow alopecia areata. BETA uses facial landmarks of eyebrow anatomy and is calculated using surface area and density. A total of 50 eyebrow images with varying levels of hair loss were distributed to six board-certified dermatologists at three academic medical centers with standardized instructions and examples. Interrater and intrarater reliability were calculated using intraclass correlation coefficients (ICCs). BETA demonstrated high interrater (ICC = 0.88, confidence interval = 0.83-0.92 right eyebrow scores and ICC = 0.90, confidence interval = 0.85-0.94 left eyebrow scores) and intrarater (ICC = 0.90, confidence interval = 0.85-0.93 right eyebrow scores and ICC = 0.91, confidence interval = 0.87-0.94 left eyebrow scores) reliability. When measured in the same patient with varying degrees of hair loss over time, BETA demonstrated sensitivity to change. BETA is a simple and reliable objective assessment of eyebrow alopecia areata. BETA is easy-to-use and quick to calculate, making it feasible for a variety of clinical and research settings. Although developed for alopecia areata, we hope that BETA will be investigated in other etiologies of eyebrow alopecia to serve as a universal tool for monitoring disease progression, improvement, and response to treatment.

Skin cancer and skin cancer risk behaviors among sexual and gender minority populations: A systematic review.

BACKGROUND: Individuals of sexual and gender minorities may have different lifetime risk of skin cancer and ultraviolet radiation exposure than heterosexual persons. OBJECTIVE: To systematically review the prevalence of skin cancer and behaviors that increase risk of skin cancer among sexual and gender minority populations. METHODS: We performed a systematic literature review in PubMed/MEDLINE, Embase, Cochrane, and Web of Science, searching for articles through October 18, 2019, that investigated risk of skin cancer and behaviors among sexual and gender minority populations. RESULTS: Sexual minority men have a higher lifetime risk of any skin cancer (odds ratio range: 1.3-2.1) and indoor tanning bed use (odds ratio range: 2.8-5.9) compared with heterosexual men, whereas sexual minority women may use indoor tanning beds less frequently than heterosexual women and do not have an elevated risk of lifetime history of skin cancer. Gender-nonconforming individuals have higher lifetime prevalence of any skin cancer compared with cisgender men. LIMITATIONS: Most variables rely on self-reporting in their original studies. CONCLUSIONS: Sexual minority men disproportionately engage in use of indoor tanning beds, which may result in increased lifetime risk of skin cancer. Recognition of this risk is important for providing appropriate screening for patients in this population.

Abnormal Baseline Lab Results Rarely Lead to Treatment Modification for Patients on Isotretinoin.

BACKGROUND: Treatment modification and clinical course for patients initiating isotretinoin with abnormal baseline lab results is currently unknown, and no recommendations exist for monitoring this patient group. METHODS: We performed a retrospective review of patients prescribed isotretinoin for acne from 2008 to 2016 at Brigham and Women's and Massachusetts General Hospitals to investigate the characteristics, clinical implications, and management of patients initiating isotretinoin for acne with baseline laboratory abnormalities. RESULTS: We identified a low rate (7.2%) of treatment modification, including interruption (3.6%) and early termination (3.6%), during isotretinoin therapy due to lab abnormalities for patients with baseline lab abnormalities. Abnormal baseline total cholesterol, triglyceride, and liver function tests did not predict management changes, as only 2 of 10 total treatment modifications were due to a lab result that was abnormal at baseline. Treatment modification was driven by ALT elevation not present at baseline that occurred in patients with liver comorbidities. CONCLUSION: Emphasizing relevant comorbidities, including hepatic disease or alcohol use, to inform our monitoring may be a superior predictor of abnormalities during treatment, as our work demonstrates that the value of baseline lab data prior to isotretinoin is unclear.

Patient satisfaction and physician productivity in shared medical appointments for vitiligo.

BACKGROUND: The shared medical appointment (SMA) allows patients with a similar diagnosis to be simultaneously cared for and educated by 1 provider, which has had success in dermatology and other fields of specialty. The SMA provides a potential solution to improve patient access to dermatologists. OBJECTIVE: The purpose of this study was to implement the SMA for patients with vitiligo and compare it to traditional appointments with regard to patient satisfaction, time to appointment, number of new patients seen per month, and generated revenue. METHODS: A vitiligo SMA was implemented, and a 12-question survey was used to assess satisfaction in both SMA and traditional appointment settings. Satisfaction, revenue, and appointment logistic data for SMAs were compared with those for traditional appointments for new patients. RESULTS: Patients were highly satisfied with both SMAs and traditional appointments (P > .05). Time to appointment was faster for the SMA, and significantly more new patients were seen monthly with the SMA (P = .009). LIMITATIONS: Limitations include small sample size, inability to correlate responder characteristics with survey responses, potential response bias, and selection bias due to absence of randomization. CONCLUSION: SMAs were successful in a vitiligo clinic for both patient and provider. The SMA is a solution to improve access to dermatologists without compromising patient benefit, experience, or satisfaction.

A video-based, flipped classroom, simulation curriculum for dermatologic surgery: A prospective, multi-institution study.

BACKGROUND: Medical education is evolving to emphasize trainee engagement. The impact of a flipped classroom curriculum and surgical simulation on dermatology resident education has not been evaluated. OBJECTIVE: To assess the impact of video education and surgical simulation on dermatology resident procedural skills. METHODS: We created a curriculum on foundational surgical skills for 31 first- and second-year dermatology residents at 3 institutions. The flipped classroom approach replaces traditional in-person lectures with at-home viewing of instructional videos. After this self-directed learning, trainees had 3 hands-on sessions using simulated skin models. The Objective Structured Assessment of Technical Skills (OSATS) instrument was used to assess residents performing a simulated elliptical excision with intermediate repair before and after the curriculum. Residents completed precurriculum and postcurriculum surveys evaluating operative confidence and perceived value of the curriculum. RESULTS: Residents' total OSATS score increased from a median of 27 (interquartile range, 22-38.5) before the curriculum to 46 (interquartile range, 39.5-51.5) after the curriculum (P < .001). Self-reported confidence in surgical performance significantly improved, and residents were highly satisfied. LIMITATIONS: Limitations include the small sample size and potential influence from concurrent learning on surgical rotations. CONCLUSIONS: Video education and simulation are effective for improving dermatology residents' procedural skills. We hope to serve as a template for other institutions and nondermatology trainees hoping to improve procedural skills.

Biologics for Psoriasis.

Biologic therapies targeting tumor necrosis factor alpha (TNF-α) (infliximab, adalimumab, certolizumab, etanercept), the p40 subunit shared by IL-12 and IL-23 (ustekinumab), the p19 subunit of IL-23 (guselkumab, tildrakizumab, risankizumab), IL-17A (secukinumab, ixekizumab), IL-17-RA (brodalumab) and both IL-17A and IL-17F (bimekizumab) have revolutionized the treatment of psoriasis. In both the short and long term, risankizumab had highest Psoriasis Area and Severity Index 90 scores compared to other oral and injectable biologics. IL-23 inhibitors had lowest rates of short-term and long-term adverse events and most favorable long-term risk-benefit profile compared to IL-17, IL-12/23, and TNF-α inhibitors.

Factors Influencing Margin Clearance and the Number of Stages of Mohs Micrographic Surgery in Basal Cell Carcinoma: A Retrospective Chart Review.

How patient and tumor factors influence clearance margins and the number of Mohs Micrographic Surgery (MMS) stages when treating basal cell carcinoma (BCC) remains widely uncharacterized. It is important to elucidate these relationships, as surgical outcomes may be compared nationally between colleagues. Our objective is to evaluate the relationships between defect size and patient demographics, as well as between BCC subtypes and the number of MMS stages. Our second objective is to compare practice patterns and characteristics of patients requiring MMS at academic centers and private practices. A retrospective chart review was performed using data collected at academic centers (2015-2018) and private practices (2011-2018) of BCC patients older than 18 years old who underwent MMS. In total, 7651 patients with BCC requiring MMS were identified. Academic center adjusted analyses demonstrated clearance margins 0.1 mm higher for every year's increase in age (p < 0.0001) and 0.25 increase in MMS stages for high-risk BCC (p < 0.0001). Private practice adjusted analyses demonstrated clearance margins 0.04 mm higher for every year's increase in age (p < 0.0001). Clearance margins correlate with older age, and additional MMS stages correlate with high-risk BCC, suggesting the role patient and tumor factors may play in predicting tumor clearance and MMS stages.

The utility of augmented teledermatology to improve dermatologist diagnosis of cellulitis: a cross-sectional study.

Dermatology consultation for cases of presumed cellulitis improves diagnostic accuracy and management. However, access to in-person consultation remains limited, a gap that could be filled with teledermatology. Augmented teledermatology may improve outcomes. In this cross-sectional study, 20 dermatologists (60% of whom reported conducting inpatient consults > 1 month per year) reviewed 10 real-life cases representing either cellulitis or pseudocellulitis as diagnosed by in-person dermatology consultation. For each case, respondents recorded their diagnosis, confidence, and management decisions after viewing the history and standard teledermatology photos, the responses to a physician-reported cellulitis questionnaire, and finally thermal images. Overall mean diagnostic accuracy increased from 84 ± 4% with the history and physical to 89 ± 3% when adding a cellulitis questionnaire and thermal images (p = 0.23). Accuracy for cellulitis cases specifically significantly increased from 76 ± 6% to 88 ± 4% when adding a cellulitis questionnaire and thermal images (p = 0.049). Accuracy for pseudocellulitis was consistently ≥ 94%. Augmented teledermatology with a standardized questionnaire and thermal images improved diagnostic accuracy for cases of cellulitis and may increase physician confidence. Dermatologists were able to accurately diagnose regardless of experience with inpatient consults, increasing the pool of potential dermatologists who could diagnose cellulitis remotely.

Development and Validation of a Simple Model to Predict the Risk of Nonmelanoma Skin Cancer on Screening Total Body Skin Examination.

Objective: There is insufficient evidence to generate skin cancer screening guidelines at the population level, resulting in arbitrary variation in patient selection for screening skin examinations. This study was aimed at developing an easy-to-use predictive model of nonmelanoma skin cancer (NMSC) risk on screening total body skin examination (TBSE). Methods: This epidemiologic assessment utilized data from a prospective, multicenter international study from primarily academic outpatient dermatology clinics. Potential predictors of NMSC on screening TBSE were identified and used to generate a multivariable model that was converted into a point-based scoring system. The performance characteristics of the model were validated in a second data set from two healthcare institutions in the United States. Results: 8,501 patients were included. Statistically significant predictors of NMSC on screening TBSE included age, skin phototype, and history of NMSC. A multivariable model and point-based scoring system using these predictors exhibited high discrimination (AUC = 0.82). Conclusion: A simple three-variable model, abbreviated as CAP (cancer history, age, phototype) can accurately predict the risk of NMSC on screening TBSE by dermatology. This tool may be used in clinical decision making to enhance the yield of screening TBSE.