Incidence, Cause of Death, and Survival of Amyloidosis in Korea

Abstract

BackgroundWe sought to assess incidence and survival for amyloidosis.MethodsWe acquired data from newly diagnosed cases related to amyloidosis from the National Health Insurance Service in Korea from 2006 through 2017 (n=2,233; male 53.5%). We calculated the age-standardized incidence rate, analyzed the survival rate (SR) using the Kaplan-Meier method, and analyzed the death risk using Cox proportional hazards methods.ResultsThe mean age was 57.0 (±16.7) years in males and 56.8 (±15.6) years in females (p=non-significant). The proportion of death was 34.7%. The causes of death were endocrine, nutritional, and metabolic diseases (33.9%), malignant neoplasm (20.8%), diseases of the circulatory system (9.68%), and diseases of the genitourinary system (9.29%). The overall age-standardized incidence rate was 0.47 persons per 100,000 persons in 2017. Overall, the 10-year SR for amyloidosis was 57.7% (55.9% in males and 59.2% in females). Adjusted hazard ratios were 9.16 (95% confidence interval [CI] 2.23, 37.5) among 40-49 year-old, 16.1 (95% CI 4.00, 65.3) among 50-59 year-old, 30.3 (95% CI 7.53, 122.0) among 60-69 year-old, 48.7 (95% CI 12.1, 196.3) among 70-79 year-old, 80.1 (95% CI 19.6, 326.3) among people 80 years or older and 1.21 (95% CI 1.02, 1.44) in the medium-level socioeconomic position group. ConclusionsThe age-standardized incidence rate of amyloidosis was about 0.5 persons per 100,000 persons in 2017. The 10-year SR of amyloidosis was about 58%. The most common cause of death was endocrine, nutritional, and metabolic diseases. The risk of death from amyloidosis increased with age and medium socioeconomic position.