Affiliation:
1. Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, University of Auckland, New Zealand
2. Department of Ophthalmology, Auckland District Health Board, New Zealand
3. Department of Epidemiology and Biostatistics, School of Population Health, Faculty of Medical and Health Sciences, University of Auckland, New Zealand
Abstract
Purpose:
The burden of uveal melanoma (UM) in Aotearoa-New Zealand (NZ), a country with the highest global burden of cutaneous melanoma, is unknown. This first, large-scale study of UM in NZ investigates survival and risks of mortality in histologically confirmed UM.
Methods:
Deidentified epidemiological data on histologically confirmed UM between January 1, 2000, and December 31, 2020, were extracted from the NZ Cancer Registry. The main outcome measures were patient demographics, tumor characteristics, all-cause versus disease-specific survival, and risks of mortality.
Results:
Histologically confirmed UM constituted 1.5% (n=703) of all-body site melanomas in NZ (n=47,997). UM predominantly affected Europeans (95%), followed by NZ indigenous Māori (4%), Asians (<1%), and Pacific Peoples (<1%), with no eye or sex predilection. Three hundred eighteen (45%) were deceased at follow-up. Of the deceased, 50% died from UM. The 1-, 5-, and 10-year survival from all-cause mortality was 94%, 68%, and 51%, and disease-specific survival was 97%, 79%, and 71%, respectively. Increasing age at UM diagnosis (>60 y), UM arising from nonspecified sites, and mixed cell UM were associated with an increased risk of disease-specific mortality. No difference in disease-specific mortality was found between sex and ethnicity on multivariate and competing risks analysis.
Conclusions:
Despite the government-funded public eye care and increasing research and awareness on UM globally, the burden of UM in the 21st century in NZ remains comparable to global studies. We continue to observe an earlier presentation of UM in non-European cohorts, particularly in our Māori population, and further studies on UM in NZ are warranted.
Publisher
Ovid Technologies (Wolters Kluwer Health)
Subject
Ophthalmology,General Medicine
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