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Patient (F5-1) had a cirrhosis at the age of 34 years (after 12 years of OR), but liver blood parameters remained stable during the 31 years of follow-up. Before introducing OR, all also had liver anomalies, that consisted in either increased liver enzymes, hyper echogenic liver, hepatosplenomaly or cirrhosis for one patient (F6-1). In conclusion, awaiting future targeted therapy for DCS or prospective monitoring studies, there is no safety signal to contraindicate OR in CDS patients with disabling skin anomalies, on condition that a close monitoring is performed. [Extracted from the article]

Background: Congenital ichthyoses (CI) comprise a heterogeneous group of genetic diseases requiring lifelong treatment and having a major effect on quality of life. Conventional treatments reduce scaling and skin discomfort; however, they usually have little or no effect on erythema and pruritus. The identification of cytokine alterations in CI raised the possibility of repurposing available biologics. Several case reports in the literature report successes using different biologics., Objective: We aimed to report the effects of biologics in real life., Methods: This was a retrospective, observational, international multicenter study of patients with CI treated with at least one biologic for a minimum of 3 months. The effect of the biologics was evaluated using an Investigator Global Assessment-Change (IGA-C) scale. A comprehensive literature search was performed in parallel., Results: A total of 98 patients were included, with a mean age of 19.7 years and both sexes equally represented. Patients with Netherton syndrome (NS) or congenital ichthyosiform erythroderma (CIE) represented the majority of patients (30% and 21.4%, respectively). Most patients (84.7%) had a severe or very severe form of CI. The most frequently used biologics were inhibitors targeting interleukin-17 (IL-17), IL-12/IL-23, or the IL-4 receptor. The mean duration of treatment was 22+20.1 months. There were 45 responders (45.9%), including 18 patients (18.3%) who were good responders; all had an erythrodermic CI subset and received one of the three main biologics. In 2 NS and CIE, IL-12/IL-23 and IL-4 receptor inhibitors tended to be most effective. Review of the literature revealed a shorter mean duration of use of biologics (11.5+8.5 months) and higher percentage of responders (85.7%), suggesting reporter bias., Conclusion: This series identified subsets of CI that may respond to biologics and will aid in designing future clinical trials of biologics for CI., (© The Author(s) 2024. Published by Oxford University Press on behalf of British Association of Dermatologists. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.)

Background: Low-flow malformations (LFMs) are rare diseases with a significant impact on health-related quality of life (HRQoL), especially in children. No disease-specific questionnaire is available for children with LFMs., Objective: To develop and validate a specific HRQoL questionnaire for children from 11 to 15 years old suffering from LFMs., Methods: A preliminary questionnaire based on a verbatim from focus groups was created and sent to children from 11 to 15 years old suffering from LFMs, together with a dermatology-specific and a generic HRQoL questionnaire (cDLQI and EQ-5D-Y)., Results: A total of 75 from 201 included children responded to the questionnaires. The final version of the questionnaire (cLFM-QoL) included 15 questions and was not divisible into subscales. It demonstrated excellent internal consistency (cronbach 0.89), convergent validity and readability (SMOG 6.04). cLFM-QoL mean score (± SD) was 12.9/45 (8.03) for all grades of severity, for mild 8.22/45 (7.5), moderate 14.03/45 (8.35), severe 12.35/45 (6.59) or very severe patients 20.7/45 (3.39) (p 0.006)., Conclusion: cLFM-QoL is a validated short and easy to use specific questionnaire with excellent psychometric capacities. It will be suitable for any children aged 11-15 with LFMs, in daily practice or clinical trials., (© 2023 The Authors. Journal of the European Academy of Dermatology and Venereology published by John Wiley & Sons Ltd on behalf of European Academy of Dermatology and Venereology.)