Mycosis fungoides (MF) is a disease that evolves slowly over years with few options for curative treatment. Improving health-related quality of life (HRQoL) is therefore an important treatment goal. This study aims to contribute to a better understanding of HRQoL, using a dermatology-adapted HRQoL questionnaire, Dermatology Life Quality Index (DLQI), in patients with MF. Baseline data from a cohort study (BIO-MUSE) of patients with MF wasere used to investigate which aspect of DLQI is the most affected and how DLQI relates to different clinical and physiological parameters. Data from a period of 12 months were used to study how DLQI changes over time. The symptom domain, for example itching, was the aspect of the DLQI that had the greatest impact on HRQoL. Thymus and activation-regulated chemokine (TARC)/ chemokine (C-C) ligand 17 (CCL17) were analysed in blood and were shown to have a positive correlation with DLQI (r=0.482, p=0.043). It was further shown that increased itching at baseline was a strong predictor of a worse DLQI score in the domain of symptoms (r=0.677, p=0.002). Future research in a larger cohort is needed to investigate the effect of itch in HRQoLhealth-related quality of life in patients with MF.

Despite extensive research, the molecular signature in atopic dermatitis (AD) remains underexplored. While previous studies have explored the expressions of pro-inflammatory markers in AD skin using biopsies and tape-stripping techniques, non-invasive sampling from the skin surface in pediatricpaediatric AD patients has not been examined. This study aimed to identify and compare cytokine expression on the skin surface of children with AD and healthy controls. We enrolled 50 children, 40 with mild -to -moderate AD and 10 without AD as controls. Samples were collected using sticky bandages soaked in sterile phosphate-buffered saline, and concentrations of 15 cytokines were measured by a multiplex immunoassay. The effect of various factors on cytokine expression was assessed by redundancy analysis (RDA), while significance among groups was identified by factorial ANOVA. We found higher levels of IL-1β in non-lesional areas of AD patients compared to healthy subjects and increased expression of IL-1β and IL-6 in lesional areas compared to non-lesional skin. Factors such as skin folds and sex were found to affect cytokine secretion. This study demonstrates the feasibility of non-invasive cytokine sampling from the skin surface in pediatricpaediatric AD patients. It underscores its potential for identifying additional biomarkers, complementing research on deeper skin layers.

Sex differences in cutaneous melanoma (CM) survival are pronounced. It is unclear how these differences impact the loss in life expectancy (LLE). A population-based cohort from the Swedish Melanoma registry was used to analyze sex differences in life expectancy (LE) and LLE following a CM diagnosis. The cohort included 12 ,893 men and 12 ,572 women aged 40 years or above diagnosed with a first invasive CM in Sweden between 2000 and 2014. The average remaining LE at CM diagnosis was 15.45 years (95% CI 15.21, 15.7) for men and 20.14 years (95% CI 19.89, 20.43) for women, and the LLE was 2.95 years (95% CI 2.70, 3.19) and 2.4 years (95% CI 2.11, 2.67), respectively. If men had the same relative survival as women, the average LE for men would instead be 17.33 years (95% CI 17.03, 17.65) and the LLE 1.07 years (95% CI 1.07, 1.38). Men lose more years due to CM than women. Baseline age, stage or location are not sufficient to explain the sex differences.

Generalized pustular psoriasis (GPP) is a rare, systemic inflammatory disease characterized by a heterogeneous and often unpredictable clinical course involving chronic symptoms and recurrent flares. Due to the rarity of GPP, our understanding of factors associated with flare recurrence remains unclear. Using an existing data set of adult patients with GPP in Japan, we performed univariate and multivariate analyses to investigate potential factors related to GPP flare recurrence, including patient demographics, treatment and severity of baseline flare. In total, 150 patients with a baseline flare were included in this analysis; 27.3% (n=41) experienced flare recurrence during the follow-up period (mean duration: 4.16 years). For the overall population, 56.0% of patients were male (n=84), the mean age at baseline was 55.5 years, and the mean body mass index was 24.3 kg/m2. Based on the Cox proportional hazards model, comorbid diabetes mellitus, a fever of ≥38.5°C at baseline flare, experience of flare(s) prior to baseline and certain respiratory infections were associated with a higher risk of flare recurrence, similar to previously published findings. These results could help identify patients at risk of GPP flares; however, clinically applicable prediction of GPP flares requires further research in a wider population.

Direct comparative evidence between IL-17A inhibitors for plaque psoriasis in Chinese populations remains limited. This study evaluated the comparative effectiveness of Xeligekimab vs Secukinumab and Ixekizumab through matchingadjusted indirect comparisons (MAICs). Individual patient data from the Xeligekimab trial (N=281) were weighted to match baseline characteristics from Chinese trials of Secukinumab (N=221) and Ixekizumab (N=176/92). Matching variables were determined following NICE and EUnetHTA MAIC guidelines, incorporating prognostic factors identified through multivariate regression. Primary endpoints included PASI 75/90/100 achievement at weeks 12, 52 and 60. At week 12, Secukinumab showed numerically higher PASI 75 (97.7% vs 93.0%, p=0.052) without statistical significance, while other endpoints were comparable (all p>0.05). At week 52, Xeligekimab showed significantly higher PASI 100 achievement (57.8% vs 42.1%, p=0.005) and DLQI 0/1 (68.8% vs 47.5%, p<0.001) vs Secukinumab. At week 60, Xeligekimab maintained significantly higher PASI 75 vs Ixekizumab (92.6% vs 76.1%, p<0.001) with lower infection rates during induction period (7.9% vs 34.7%, p<0.001) and maintenance period (22.4% vs 56.5%, p<0.001). This MAIC provides hypothesis-enerating evidence that Xeligekimab may offer advantages in specific long-term efficacy endpoints and safety outcomes, requiring confirmation in direct randomized controlled trials.