Skin cancer in the elderly

Methotrexate did not add skin cancer risk in patients with psoriasis receiving narrowband ultraviolet B phototherapy: a nationwide retrospective cohort study

BACKGROUND

In the era of biologic therapy, phototherapy and methotrexate (MTX) are still commonly used for treatment in patients with moderate-to-severe psoriasis. However, the skin cancer risk following a combination of MTX and narrowband ultraviolet B (NB-UVB) has rarely been explored.

OBJECTIVES

To investigate whether MTX plus NB-UVB increases skin cancer risk in patients with psoriasis.

METHODS

We conducted a retrospective cohort study of data in the Taiwan National Health Insurance Research Database from 1997 to 2013. Cumulative incidences and multivariate analysis were investigated using a competing risk regression model, comparing skin cancer risk between cohorts of people having combination therapy and those using NB-UVB alone, matched for relative confounders. We further conducted a sensitivity analysis for those receiving a higher MTX dose. Standardized incidence ratios (SIRs) were calculated for skin cancer risk.

RESULTS

We enrolled 3203 participants in each cohort. No significant differences in skin cancers were noted between the two cohorts for the cumulative incidences (log-rank test, P = 0.28) and for the hazard ratio (HRs) [adjusted HR 0.50, 95% confidence interval (CI) 0.15-1.63, P = 0.247] in the competing risk regression model. There were also no significant differences between those receiving higher-dose MTX and UVB alone in the cumulative incidences of skin cancers (P = 0.23) and the HR (adjusted HR = 0.29, 95% CI 0.04-2.21, P = 0.23) in the multivariate analysis. There was no significant difference in the SIR between the two cohorts compared with the general population.

CONCLUSIONS

In the Taiwanese population, MTX does not increase skin cancer risk in patients with moderate-to-severe psoriasis receiving NB-UVB.

Adherence to dermatologic treatment: A retrospective cross-sectional study on geriatric patients

OBJECTIVE

With the prolongation of the average life expectancy worldwide, diseases including dermatological disorders of the elderly are gaining importance. The presence of comorbidities in this age group may affect the treatment strategies; compliance with follow-up and adherence to medication can be poor. The aim of this study is to evaluate the dermatological disorders of patients aged 65 and over and determine their adherence to dermatologic treatment.

METHODS

A retrospective and cross-sectional study was conducted on patients aged 65 and over applied to a single tertiary dermatology clinic between April 2021 and April 2022. Diagnoses were that clinical and diagnostic tests were performed when only necessary.

RESULTS

A total of 207 admissions to the dermatology clinic by 135 patients were evaluated. Eczema (23.05%) and infections (25.2%) were the most common dermatological diagnoses. The percentage of patients with precancerous and cancerous lesions was 11.9%. Among 123 patients who need at least a follow-up visit, only 37 patients (30.1%) applied for follow-up as advised, and medicines were taken regularly by 23 of these patients (62.2%). Compliance with follow-up was lower among men (OR 0.365, 95% CI 0.160-0.834, and p=0.02) and patients who were treated only with local therapy agents (OR 0.345, 95% CI 0.138-0.863, and p=0.20).

CONCLUSION

Eczema and infections were the most common dermatological diagnoses among geriatric patients in the present study. The majority of geriatric patients with skin conditions were not applying for follow-up visits. Women and patients treated with systemic therapy agents were more compliant. The prevalence of basal cell carcinoma was not low, and this emphasizes the importance of a careful dermatological examination regardless of primary complaint in this age group.

Safety and efficacy of vismodegib in patients aged ≥65 years with advanced basal cell carcinoma

Because many patients with unresectable basal cell carcinoma (BCC) are aged ≥65 years, this study explores the efficacy and safety of vismodegib in these patients with locally advanced (la) or metastatic (m) basal cell carcinoma (BCC) in the ERIVANCE BCC trial and the expanded access study (EAS).We compared patients aged ≥65 years to patients aged <65 years taking vismodegib 150 mg/day, using descriptive statistics for response and safety. Patients aged ≥65 years (laBCC/mBCC) were enrolled in ERIVANCE BCC (33/14) and EAS (27/26). Investigator-assessed best overall response rate in patients ≥65 and <65 years was 46.7%/35.7% and 72.7%/52.6% (laBCC/mBCC), respectively, in ERIVANCE BCC and 45.8%/33.3% and 46.9%/28.6%, respectively, in EAS. These differences were not clinically meaningful. Safety was similar in both groups, although those aged ≥65 years had a higher percentage of grade 3-5 adverse events than those aged <65 years. Vismodegib demonstrated similar clinical activity and adverse events regardless of age.

Clinical aspects and molecular diagnostics of skin aging

This contribution will address the effect of aging on skin functions, with a particular focus on skin permeability, wound healing, angiogenesis, lipogenesis, sweat production, immune function, and vitamin D synthesis. With accelerating age, skin functions deteriorate due to structural and morphologic changes. Skin is prone to the development of several diseases, varying from benign to malignant. Because the number of persons aged 80 and older is expected to rise in the next decades, disease prevention will become an important issue. Screening examinations and prevention through public education starting at an early age regarding sun avoidance, the use of sunscreens and the importance of a balanced nutrition are the first steps for successful healthy aging. Although the fundamental mechanisms in the pathogenesis of aged skin are still poorly understood, a growing body of evidence points toward the involvement of multiple pathways. Recent data obtained by expression profiling studies and studies of progeroid syndromes illustrate that among the most important biologic processes involved in skin aging are alterations in DNA repair and stability, mitochondrial function, cell cycle and apoptosis, extracellular matrix, lipid synthesis, ubiquitin-induced proteolysis and cellular metabolism. Among others, a major factor that has been implicated in the initiation of aging is the physiologic decline of hormones occurring with age. However, hormones at age-specific levels may regulate not only age-associated mechanisms but also tumor suppressor pathways that influence carcinogenesis. Understanding the molecular mechanisms of aging may open new strategies to deal with the various diseases accompanying high age, including cancer.

The prevalence of skin diseases in the elderly: analysis of 4099 geriatric patients

BACKGROUND

The geriatric population is composed of persons over 65 years of age, and few studies are available on the dermatologic diseases in this group.

METHODS

Data on a total of 4099 geriatric patients admitted between the years 1999-2003 were analyzed. Hospital-based patient registry records were used for data collection. The data were analyzed according to age, sex, and time of admittance.

RESULTS

The five most frequently encountered diseases in elderly patients were eczematous dermatitis, fungal infections, pruritus, and bacterial and viral infections. The most common disorders in males were fungal, bacterial, and viral infections, disorders of the feet, cutaneous ulcers, and vesiculo-bullous diseases, whereas, in females, they were immune-rheumatologic diseases and disorders of the mucous membranes. The five most frequently encountered diseases were significantly different in geriatric age subgroups. In the younger age group, pruritus, disorders due to sun exposure, and precancerous lesions and skin carcinomas were less common, whereas eczematous dermatitis was more common. The frequencies of some diseases showed significant seasonal variations. Infestations were more common in spring and summer, fungal infections were more common in summer but less so in winter, pruritus was more common in autumn but less so in spring, disorders due to sun exposure were more common in spring, and benign neoplasia were more common in autumn. In 2003, benign neoplasia, precancerous lesions and skin carcinomas, and immune-rheumatic disorders were more common, but vesicular and bullous diseases, fungal infections, and cutaneous lymphomas were less common when compared with the year 1999.

CONCLUSIONS

This study provides important data on the frequency of dermatologic diseases in elderly patients, and shows variations in the frequency depending on age, gender, and season. We believe that this study will create awareness about the extent and patterns of dermatologic problems in geriatric patients.

The age of skin cancers

Cancer affects two major cell types in the human skin: epithelial cells and melanocytes. Aging and a previous history of ultraviolet light exposure are major risk factors for skin cancers, including basal and squamous cell carcinomas and melanomas. However, melanomas, which are the most deadly of the skin tumors, display two intriguing characteristics: The incidence is increased and the prognosis is worse in males over 60 years as compared with females of the same age. This Perspective discusses possible reasons for age and gender as melanoma risk factors, as well as the need for studies aimed at unraveling the molecular mechanism of such puzzling events.

The interdependence of skin aging, skin cancer, and DNA repair capacity: a novel perspective with therapeutic implications

The human body is constantly exposed to exogenous and endogenous insults that threaten its genomic integrity and that lead to changes at the molecular, biochemical, and cellular levels. As a major interface between the environment and the internal milieu, our skin is especially subject to such events. Common insults include but are not limited to infectious agents, environmental pollutions and toxins, carcinogens, and ultraviolet (UV) irradiation. It is estimated that there are thousands of DNA alterations in each cell daily. Therefore, if not efficiently repaired, our genome would rapidly be destroyed. This review focuses predominantly on UV-induced DNA damage in human skin, protective molecular responses to UV damage, and the consequences of these opposing forces for aging and photocarcinogenesis.

A Darwinian-evolutionary concept of age-related diseases

Humans and animals are structurally designed as a compromise to guarantee optimal survival until the time of reproduction based on natural selection that is effective until that age. Modern conditions of life including improvement of hygiene, preventive and curative medicine as well as socio-economic and political developments have led to an increase of the mean life expectancy that allows ever larger proportions of the population to reach an age that is far beyond that of the reproductive phase. The concept of a Darwinian-evolutionary basis for the development of age-related diseases in principle postulates that genetic traits that are beneficial in younger years to allow for successful reproduction may become deleterious in the elderly, i.e. when selective pressure does not seem to be effective anymore. Examples for this mechanism of pleiotropic antagonism taken from the work of the Institute for Biomedical Aging Research in Innsbruck, Austria, include atherosclerosis, benign and malignant prostate hypertrophy, Alzheimer's disease and the reciprocal relationship between cellular senescence and cancer.