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Gesine Meyer, Kathrin Neumann, Klaus Badenhoop and Roland Linder

Objective

Our objective was to investigate the epidemiology of autoimmune Addison's disease (AD) in Germany.

Design

Routine data were analyzed from the Statutory Health Insurance (SHI) database of the Techniker Krankenkasse (TK) for an observation period from 01/01/2008 to 31/12/2012. The TK is one of the largest German health care insurance providers covering more than 10% of the German population.

Subjects and methods

Between 2008 and 2012, a total of 2477 diagnoses of primary adrenal failure were recorded in the SHI database. After exclusion of secondary, iatrogenic or other non-idiopathic forms and after adjustment for incomplete data sets, 1364 diagnoses of autoimmune-mediated AD remained.

Results

The prevalence of AD in our cohort showed a steady increase from 82 per million in 2008 to 87 per million in 2012. On average, the prevalence rose about 1.8% per year, and due to a pronounced increase (2.7%) in females. The prevalence was lower in men (63–68 per million) than in women (96–108 per million). Autoimmune comorbidities were found in 46.5% of AD patients. Adrenal crises were documented with a frequency of 14–17/100 patient years.

Conclusions

These data provide a first epidemiological profile of this rare and perilous endocrine disease in Germany. Although the prevalence of AD appears lower than in the Scandinavian countries, the increasing figures in females over the last 5 years warrant further investigations. Furthermore, adrenal crises pose a considerable burden. Hereby, we can show that health insurance data provide a valuable tool for epidemiological studies in the absence of national registries.

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Gesine Meyer, Moritz Mayer, Antonia Mondorf, Anna Katharina Flügel, Eva Herrmann and Joerg Bojunga

Objective

Hormone treatment is an important part of gender reassignment therapy in gender dysphoria. Previous data about efficacy and safety are commonly based on small cohorts or they comprise former cohorts under meanwhile obsolete therapy regimes. Our objective was to investigate these topics in a large cohort of individuals under guideline-based treatment.

Design/methods

Cohort study of medical files of n = 155 male-to-female (transwomen) and n = 233 female-to-male transgender persons (transmen) of an Endocrine outpatient clinic between 2009 and 2017.

Results

Median time to reach amenorrhoea in transmen under testosterone monotherapy was 3 months, regardless of whether testosterone undecanoat or gel was used. Transmen with higher levels of hemoglobin 3–4 months after onset of GAHT had a greater chance to reach amenorrhea early, whereas testosterone levels showed no significant correlation (hemoglobin: HR: 1.639; 95% CI: 1.036–2.591, P = 0.035; testosterone: HR: 0.999; 95% CI: 0.998–1.001, P = 0.490). Estradiol levels (ρ −0.117; P = 0.316) had no significant influence on breast development in transwomen. Testosterone levels (ρ −0.398; P < 0.001) and FAI (ρ 0.346; P = 0.004) were significantly negatively correlated with reached Tanner stage. Liver values and blood lipids showed an alignment to reference range of the required sex in both groups. Relevant elevations of liver values were rare (2.44% in transmen, 4.23% in transwomen) and transient in most cases. Most relevant side effects were acne (44.8%), respectively erythrocytosis (up to 5.6%) in transmen and venous thrombembolism (1.9%) in transwomen.

Conclusions

Gender-affirming hormone therapy in accordance with current clinical practice guidelines is efficient and safe.