No abstract

Dipeptidyl peptidase-4 inhibitors have been suspected to induce bullous pemphigoid (BP). The objective of this study was to compare the observed frequency of gliptin intake in a large sample of 1,787 BP patients diagnosed between 2012 and 2015 in France, with the expected frequency after indirect age standardization on 225,412 individuals extracted from the database of the National Healthcare Insurance Agency. The secondary objective was to assess the clinical characteristics and the course of gliptin-associated BP, depending on whether gliptin was continued or stopped. The observed frequencies of intake of the whole gliptin class and that of vildagliptin in the BP population were higher than those in the general population after age standardization (whole gliptin class: 6.0%; 95% confidence interval ¼ 4.9e7.1% vs. 3.6%, observed-to-expected drug intake ratio ¼ 1.7; 95% confidence interval ¼ 1.4e2.0; P < 0.0001; vildagliptin ¼ 3.3%; 95% confidence interval ¼ 2.5e4.1% vs. 0.7%, ratio ¼ 4.4; 95% confidence interval ¼ 3.5e5.7; P < 0.0001). The association of any gliptinþmetformin was also higher than in the general population, ratio ¼ 1.8 (95% confidence interval ¼ 1.3e2.4; P < 0.0001). Gliptin-associated BP had no specific clinical characteristics. Gliptin was stopped in 48 (45.3%) cases. Median duration to achieve disease control, rate, and delay of relapse were not different whether gliptin was stopped or continued. This study strongly supports the association between gliptin intake, particularly vildagliptin, and the onset of BP.

These results indicate that complete healing of long-standing, large VLUs is independently associated with ablation of the incompetent superficial vein and percentage of wound area reduction after the first 4 weeks of treatment.

it is crucial to ensure good quality, understandability and reliability prior to publication. Patients should be advised to critically evaluate the source and content of a video and not to simply trust the number of likes. Health care providers and authorities should take joint measures to implement quality control of videos on YouTube TM. The results of our study may encourage shared decision-making and be beneficial for both patients and health care providers to recommend appropriate videos to their patients. We thank Heike Weingarten and Cindy G€ orgmayr for their valuable support in evaluating the 49 videos. Funding: None.

Vitiligo may thus emerge and/or progress during treatment with various biological agents, mainly TNFα inhibitors and could be a new paradoxical skin reaction. De novo vitiligo displays a favourable outcome when maintaining the biological agent, whereas the prognosis seems worse in cases of pre-existing vitiligo.