Publications by authors named "Peter C M van De Kerkhof"

Article Synopsis
  • Itch is a major symptom of atopic dermatitis (AD) in children, affecting their quality of life, prompting a systematic review and meta-analysis of systemic treatments for itch relief in pediatric patients with AD.
  • The study analyzed data from 30 studies, highlighting that treatments like dupilumab, cyclosporin A, abrocitinib, and upadacitinib significantly reduced itch severity, with dupilumab showing the most evidence.
  • The findings suggest that these treatments can improve the quality of life for children with AD, emphasizing the need to consider patient-centered goals in treatment decisions as more therapies become available.
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Optimal selection of systemic therapy in older adults with psoriasis can be challenging, due to sparse evidence-based guidance. This multicentre retrospective study investigated the safety of systemic therapy with causality assessment in a real-world cohort of older adults (≥ 65 years) with psoriasis. Data from 6 hospitals on (serious) adverse events were collected, causality assessment performed and incidence rate ratios calculated.

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Background: Evidence-based guidance in older adults (≥65 years) with psoriasis is sparse and undertreatment might be present.

Objectives: To assess prescribing patterns, comfort levels, barriers and needs of dermatologists when treating older adults with systemic antipsoriatic therapy.

Methods: A mixed-methods design was used including a survey among all Dutch dermatologists and residents, followed by semi-structured interviews.

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Article Synopsis
  • Biologics for psoriasis can be safely reduced in dosage for patients with low disease activity to avoid overtreatment and reduce costs, though concerns about increased anti-drug antibody (ADA) formation exist.
  • * The study involved 118 patients who were randomly assigned to either dose reduction (DR) or usual care (UC) over one year, examining serum drug concentrations and ADA levels.
  • *Results showed no significant difference in ADA levels for adalimumab between DR and UC, and no relevant ADA development for ustekinumab; this suggests that dose tapering may not increase immunogenicity in low disease activity psoriasis patients.
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Importance: Few studies have examined watchful waiting (WW) in patients with basal cell carcinoma (BCC), although this approach might be suitable in patients who might not live long enough to benefit from treatment.

Objective: To evaluate reasons for WW and to document the natural course of BCC in patients who chose WW and reasons to initiate later treatment.

Design, Setting, And Participants: An observational cohort study was performed at a single institution between January 2018 and November 2020 studying patients with 1 or more untreated BCC for 3 months or longer.

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Background: Incorporating patient-related factors associated with treatment outcomes could improve personalized care in older patients with basal cell carcinoma (BCC).

Objective: To evaluate and identify predictors of treatment burden, treatment outcomes, and overall survival in patients aged ≥70 years, surgically treated for BCC in the head and neck area.

Methods: The data from the prospective, multicenter Basal Cell Carcinoma Treatment in Older Adults (BATOA) cohort study were extracted to evaluate the experienced treatment burden (visual analog scale, 0-10 cm; lower scores indicating higher treatment burden), treatment outcomes, and mortality.

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Patient-reported outcomes are valuable for assessing new psoriasis therapies. This study investigated patient-reported outcomes in patients with moderate-to-severe plaque psoriasis treated with ixekizumab or ustekinumab, dosed according to their respective labels, for 52 weeks (IXORA-S-NCT02561806). Patient-reported outcomes investigated included patient global assessment, pruritus, skin pain, health-related quality of life, and work productivity.

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A dose reduction strategy for adalimumab, etanercept and ustekinumab in patients with psoriasis who have stable and low disease activity has recently been compared with usual care in the CONDOR study (CONtrolled DOse Reduction) of biologics in patients with psoriasis with low disease activity. The aim of the current study was to perform a cost-utility analysis with a 12-month time horizon alongside this trial, using prospectively measured healthcare costs and quality-adjusted life years, based on Short-Form Six-Dimension utilities. Bootstrap analys-es were used to calculate the decremental cost-utility ratio and the incremental net monetary benefit.

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Importance: Treating older adults with psoriasis can be challenging owing to comorbidities, concomitant medication use, and consequent safety risks. Although many studies focus on the effectiveness and safety of systemic antipsoriatic therapies in the general population, their effectiveness in older adults with psoriasis has not been systematically assessed.

Objective: To evaluate the effectiveness and safety of systemic antipsoriatic therapies in patients 65 years or older.

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Since time immemorial, sunlight has been used to treat a wide variety of skin afflictions. Consequently, probably on the basis of patients' experience and consequent experimentation with lamps, phototherapy has become an important dermatological treatment, particularly for psoriasis. The active component in sunlight proved to be ultraviolet (UV) radiation.

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Little is known about psoriasis in geriatric patients, whereas treating this growing population can be challenging due to comorbidities, comedication and physical impairments. To compare disease and treatment characteristics of psoriasis patients ≥ 65 years old with patients < 65 years old, a self-assessment survey was sent to all members of the Dutch Psoriasis Association (n = 3,310). In total, 985 (29.

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Importance: Biologics revolutionized the treatment of psoriasis. Biologics are given in a fixed dose, but lower doses might be possible.

Objective: To investigate whether dose reduction (DR) of biologics in patients with stable psoriasis is noninferior to usual care (UC).

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Importance: Treatment of psoriasis is associated with improved quality of life (QOL) in those with the disease. However, in daily clinical practice, the association between the degree of psoriasis clearance and QOL has not been studied to date, especially in the pediatric population.

Objectives: To identify the association between the degree of psoriasis improvement (as measured by the Psoriasis Area Severity Index [PASI] and body surface area [BSA] response) and QOL (as measured by the Children's Dermatology Life Quality Index [CDLQI]) in pediatric psoriasis, and to assess the association of treatment type with QOL, independent of psoriasis improvement.

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