Authors' objectives: Hand eczema is common and a cause of morbidity and occupational disability. When education, irritant/contact allergen avoidance, moisturisation and topical corticosteroids are insufficient to control chronic hand eczema, ultraviolet therapy or systemic immune-modifying drugs are used. There is no treatment pathway generally accepted by UK dermatologists. Hand eczema (HE) is common and an important cause of morbidity and occupational disability. One-year prevalence of HE is up to 10% in the general population, with 5–7% developing chronic hand eczema (CHE). Current evidence is not compelling enough to guide clinical practice. When patient education, irritant/contact allergen avoidance, moisturisation and topical corticosteroids are insufficient to control CHE, ultraviolet therapy (PUVA) or systemic immune-modifying drugs are used. There is no treatment pathway generally accepted among UK dermatologists. Most UK dermatology centres use phototherapy (mostly Immersion PUVA) or alitretinoin as first-line treatment for uncontrolled CHE. ALPHA is the first trial comparing alitretinoin with Immersion PUVA as a first-line therapy for patients with uncontrolled severe CHE. Primary objective Compare alitretinoin and Immersion PUVA as first-line therapy in terms of disease activity at 12 weeks post planned start of treatment.

Authors' results and conclusions: Intention-to-treat population: 441 (100.0%) participants; 220 (49.9%) alitretinoin and 221 (50.1%) ultraviolet therapy. At least one dose was received by 212 (96.4%) alitretinoin and 196 (88.7%) ultraviolet therapy participants. As a first-line therapy, alitretinoin showed more rapid improvement and superiority to ultraviolet therapy at week 12. This difference was not observed at later time points. Alitretinoin is cost-effective at weeks 12 and 52. Ultraviolet therapy is cost-effective after 10 years, with a high degree of uncertainty. Hand eczema severity index may be a useful primary outcome measure for hand eczema trials; ALPHA results will inform future trials. Screening and recruitment Thirty-one NHS hospitals in England, Scotland and Wales assessed 1557 patients for eligibility, registered 582 (37.4%) and randomised 441 (75.8%) participants between October 2015 and June 2021. Of 1557 patients screened, 642 (41.2%) were ineligible, with 347 (54.0%) not having a severe CHE diagnosis. Of 915 eligible patients, 582 (63.6%) were consented and registered. Of 333 patients who did not consent, 74 (22.2%) thought the Immersion PUVA schedule or travel was inconvenient, and 28 (8.4%) did not want alitretinoin. Of 141 patients not randomised, the main reasons were not meeting the eligibility criteria [n = 69 (48.9%)] or patient choice [n = 29 (20.6%)]. Of patients randomised, 220 (49.9%) were allocated to alitretinoin and 221 (50.1%) to Immersion PUVA. Of those allocated to alitretinoin, 201 (91.4%) started treatment within 7 days post randomisation compared with 165 (74.7%) of those allocated to Immersion PUVA. In total, 132 (29.9%) participants withdrew from, or were lost to, follow-up. The ITT population included 441 (100.0%) participants. Alitretinoin and Immersion PUVA both led to reductions in symptoms. As a first-line therapy, alitretinoin showed a more rapid improvement and was superior to Immersion PUVA in terms of primary end point at 12 weeks. This difference was not observed at later time points. Alitretinoin was more cost-effective over the short term (12 and 52 weeks) with robust results. Long-term analysis indicates that Immersion PUVA is cost-effective in the long term; these results, however, are uncertain. These findings will inform clinical management of patients with severe CHE. Alitretinoin may be considered as the recommended first-line therapy; however, Immersion PUVA may also be considered for longer-term outcomes, particularly in patients where alitretinoin is not an appropriate treatment. Recruitment was difficult, with perceived treatment pathway challenges. The trial implemented a self-referral service, through which 13.8% of randomised participants were recruited. The Immersion PUVA schedule was problematic, with more than 20% of participants declining participation citing this as their main reason. Immersion PUVA treatment compliance was poor, and regular twice-weekly treatment was not achieved by most patients. Hand eczema severity index (HECSI) was the chosen primary outcome measure because it incorporated more details about the condition compared with PGA, which had been used previously. Furthermore, HECSI is continuous rather than discrete, which meant a smaller sample size was required for a desired level of power. The results from ALPHA will help inform future CHE trial designs. Most participants had some educational need for how to manage their condition, and overall, there remains a need for better therapeutic approaches for severe CHE. Just 59% and 61% of patients allocated to alitretinoin and Immersion PUVA, respectively, were known to achieve a clear/almost clear assessment at any time point during the trial period. Further work includes deeper analysis of substudies and pilot data to inform future research, which is needed to understand the long-term effects of treatments.

Authors' methods: Prospective, multicentre, open-label, two-arm parallel group, adaptive randomised controlled trial with one planned interim analysis, and an economic evaluation. UK secondary care dermatology outpatient clinics. Patients with severe chronic hand eczema unresponsive to at least 4 weeks of treatment with potent topical corticosteroids. Treatment compliance was poor for ultraviolet therapy. Regular twice weekly treatment was not received by most patients. Assessment of long-term effects of randomised treatments was complicated by use of second-line treatments post treatment phase. Design Prospective, multicentre, open-label, two-arm parallel group, adaptive randomised controlled trial with one planned interim analysis and an economic evaluation. Patients with severe CHE unresponsive to at least 4 weeks of treatment with potent topical corticosteroids.

Authors' identified further research: Further analysis of substudies and pilot data will provide valuable information for future studies. A clear need for better therapeutic approaches for severe chronic hand eczema remains. Future studies will need to further address long-term benefits of treatments given.

Project Status: Completed

URL for project: https://www.journalslibrary.nihr.ac.uk/programmes/hta/12/186/01

Year Published: 2024

URL for published report: https://www.journalslibrary.nihr.ac.uk/hta/TWQC0141

URL for additional information: English

English language abstract: An English language summary is available

Publication Type: Full HTA

Country: England, United Kingdom

DOI: 10.3310/TWQC0141

Organisation Name: NIHR Health Technology Assessment programme

Contact Address: NIHR Journals Library, National Institute for Health and Care Research, Evaluation, Trials and Studies Coordinating Centre, Alpha House, University of Southampton Science Park, Southampton SO16 7NS, UK

Contact Name: journals.library@nihr.ac.uk

Contact Email: journals.library@nihr.ac.uk