This study demonstrates different patterns of malignancies after renal transplantation in Chinese RTRs, with higher incidences of kidney and bladder cancers. Physicians should be more vigilant in examining RTRs for post-transplantation malignancies especially in younger patients.

Our study not only confirmed the significant association of vitiligo with multiple autoimmune and atopic diseases in Taiwan but also disclosed several unique findings, including the much lower prevalence of vitiligo, delayed onset of vitiligo by three decades, different associated comorbidity profiles comparing to westerners and the age- and gender-specific approach for the vitiligo-associated comorbidities.

The incidence of and risk factors for Jarisch-Herxheimer (JH) reaction were investigated prospectively among 240 human immunodeficiency virus (HIV)-infected and 115 HIV-uninfected patients with syphilis who received penicillin treatment. The overall rate of JH reaction was 31.5% (34.6% in HIV-infected patients and 25.2% in HIV-uninfected patients). In multivariate analysis, risk factors for JH reaction included high rapid plasma reagin (RPR) titers (per log(2) RPR increase, risk ratio [RR], 1.19; 95% confidence interval [CI], 1.04-1.37), early syphilis (RR, 8.59; 95% CI, 4.75-15.56), and prior penicillin treatment (RR, 0.39; 95% CI, 0.20-0.78).

The association between sarcoidosis and autoimmune comorbidities has been reported, however, it has seldom been confirmed by a large nationwide study. Our study aimed to clarify the association between sarcoidosis and autoimmune comorbidities in the Taiwanese. A total of 1237 patients with sarcoidosis and 4948 age- and sex-matched control subjects were selected from the National Health Insurance Research Database of Taiwan from 1997 to 2010. Multiple logistic regressions were performed to calculate the odds of comorbidities between the two groups. The prevalence of sarcoidosis was 2.17/100 000 individuals in Taiwan. Sarcoidosis patients tended to run a higher risk of autoimmune comorbidities than the control group (17.6% vs 9.4%, P < 0.05). Autoimmune thyroid disease (adjusted odd ratio [aOR], 1.32; 95% confidence interval [CI], 1.05-1.64), Sjögren's syndrome (aOR, 11.6; 95% CI, 4.36-31.0) and ankylosing spondylitis (aOR, 3.80; 95% CI, 2.42-5.97) were significantly associated with sarcoidosis. The sex-stratified analyses were carried out to demonstrate a significant association of sarcoidosis with ankylosing spondylitis in both sexes, but with autoimmune thyroid disease in male patients and with Sjögren's syndrome female patients, respectively. Besides, the diagnosis of the autoimmune comorbidities strongly associated with sarcoidosis tended to be established after that of sarcoidosis. This study demonstrated that patients with sarcoidosis tended to have autoimmune thyroid disease, Sjögren's syndrome and ankylosing spondylitis, and the diagnosis of sarcoidosis usually preceded that of associated comorbidities. Clinicians should be alert to autoimmune comorbidities in patients with sarcoidosis.

Asian population-based data evaluating all-cause mortality and cause-specific mortality in patients with psoriasis are limited. This study aimed to evaluate the risk of all-cause mortality (stratified according to onset status, disease severity, and concomitant psoriatic arthritis) and cause-specific mortality in patients with psoriasis. Our study cohort consisted of 80,167 patients with newly diagnosed psoriasis between 2001 and 2012 in the National Health Insurance Database. Vital status and cause of death were ascertained from the National Death Registry of Taiwan. All-cause and cause-specific crude mortality rates and standardized mortality ratios were estimated. A total of 7,198 deaths were identified during the follow-up period (508,505 person-years). The standardized mortality ratios were 1.53 for severe psoriasis (95% confidence interval = 1.45-1.60), 1.47 for early-onset psoriasis (95% confidence interval = 1.34-1.61), and 1.47 for patients with psoriatic arthritis (95% confidence interval = 1.36-1.58). In the cause-specific mortality analysis, the absolute and excess risks of death were highest for malignancies (3.6 and 1.57 deaths per 1,000 patient-years, respectively) and circulatory system diseases (3.0 and 1.44 deaths per 1,000 patient-years, respectively). Patients with severe psoriasis, early-onset psoriasis, and psoriatic arthritis had higher all-cause mortality risks. In particular, patients with psoriasis had higher excess risks of mortality from malignancies and circulatory system diseases.

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The presence of atopic triad diseases is significantly associated with risks of systemic lupus erythematosus, rheumatoid arthritis, and Sjögren syndrome, and their coexistence exacerbates this risk. To our knowledge, this was the first study that reported an increased risk of Sjögren syndrome among patients with atopy.