Journal
ECLINICALMEDICINE
Volume 51, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.eclinm.2022.101561
Keywords
Dermatology; Eczema; Dermatitis; Kanuka; Decentralised
Categories
Funding
- Callaghan Innovation
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This trial investigated the efficacy and safety of a 3% kanuka oil cream for the treatment of eczema. The results showed that the group using the kanuka oil cream had a significant improvement in eczema score compared to the control group. The rates of adverse events and withdrawals were similar between the groups, indicating that kanuka oil may be an effective, safe, and well-tolerated treatment for moderate-to-severe eczema in adults.
Background Maori, the indigenous people of New Zealand, have traditionally used the kanuka tree as part of their healing system, Rongoa Maori, and the oil from the kanuka tree has demonstratable anti-inflammatory and anti-bacterial properties. This trial investigated the efficacy and safety of a 3% kanuka oil (KO) cream compared to vehicle control (VC) for the topical treatment of eczema. The trial was conducted through a nationwide community pharmacy research network. Methods This single-blind, parallel-group, randomised, vehicle-controlled trial was undertaken in 11 research trained community pharmacies across New Zealand. Eighty adult participants with self-reported moderate-to-severe eczema, assessed by Patient Orientated EczemaMeasure (POEM) were randomised by blinded investigators to apply 3% KO cream or VC topically, twice daily, for six weeks. Randomisation was stratified by site and eczema severity, moderate versus severe. Primary outcome was difference in POEM scores at week six between groups by intention to treat. The study is registered on the Australian New Zealand Clinical Trial Registry (ANZCTR) reference number, ACTRN12618001754235. Findings Eighty participants were recruited between 17 May 2019 and 10 May 2021 (41 KO group, 39 VC group). Mean POEM score (standard deviation) improved between baseline and week six for KO group, 18.4 (4.4) to 6.8 (5.5), and VC group, 18.7 (4.5) to 9.8 (6.5); mean difference between groups (95% confidence interval) was -3.1 (-6.0 to -0.2), p = 0.036. There were three adverse events reported in the KO group related to the intervention and two in the control group. Interpretation The KO group had a significant improvement in POEM score compared to VC. Rates of adverse events and withdrawals were similar between groups with no serious adverse events reported. Treatment acceptability was high for both groups across all domains. Our results suggest that in adults with moderate-to-severe eczema, the addition of KO to a daily emollient regimen led to a reduction in POEM score compared to VC. KO may represent an effective, safe, and well tolerated treatment for moderate-to-severe eczema in adults. Copyright (C) 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
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