Xerosis and pruritus as major EGFRI-associated adverse events

Purpose

The objective of this sub-analysis of the BeCet study (NCT01136005) was to examine health-related quality of life (HRQoL) of patients experiencing dermatological adverse events (AEs) during the first 6 weeks of epidermal growth factor receptor inhibitor (EGFRI) treatment.

Methods

Patients (n = 85) treated with EGFRI completed five questionnaires during the first 6 weeks of treatment. 77 patients provided enough data for the sub-analysis. Experienced AEs were reported in the Dermatological Reactions Targeted Therapy–Patients (DERETT-P), a symptom experience diary for patients treated with targeted therapy. The impact of EGFRI-associated dermatological adverse events on HRQoL was examined using four HRQoL questionnaires; the Functional Assessment of Cancer Therapy–EGFRI (FACT-EGFRI-18), the Functional Assessment of Cancer Therapy–General (FACT-G), the 36-Item Short Form Health Survey (SF-36), and the Skindex-16.

Results

During the first 6 weeks of EGFRI treatment, physical discomfort was the most significantly affected domain. In the entire study population, xerosis (dry skin) (22.3 %) and pruritus (itchy skin) (16.9 %) were reported as the most impactful AEs. For patients experiencing a papulopustular eruption (acneiform rash) pruritus (24.2 %), xerosis (18.9 %), and papulopustular eruption (6.3 %) were reported as the most impactful AEs. Papulopustular eruption, xerosis, and pruritus all showed a significant negative effect on HRQoL, displayed in FACT-EGFRI-18 scores.

Conclusions

In addition to papulopustular eruption, xerosis and pruritus are major EGFRI-associated dermatological AEs with an impact on HRQoL, which warrant more attention in clinical practice and research.

Histopathology of acneiform eruptions in patients treated with epidermal growth factor receptor inhibitors

BACKGROUND

Epidermal growth factor receptor inhibitors (EGFRIs) are anticancer agents that have been approved for use in a variety of solid tumors. EGFR-inhibiting agents produce a variety of cutaneous adverse events: most commonly a follicular papulopustular (acneiform) eruption on the face, scalp, chest and upper back.

OBJECTIVE

The goal of this manuscript is to elucidate the histopathologic findings associated with this most common adverse event.

METHODS

The histopathological findings of 10 patients with papulopustular eruptions induced by EGFRIs are described and compared to the four prior published case series of acneiform rashes attributed to EGFRIs.

RESULTS

All 10 patients in our case series showed a superficial, predominantly neutrophilic suppurative folliculitis with ectatic follicular infundibula and rupture of the epithelial lining. Similar pathology was found in the four other case series discussing this phenomenon.

CONCLUSION

While the characteristic clinical appearance of this rash precludes the need for a biopsy in most cases, this knowledge promotes our understanding of the pathophysiologic process. As the use of EGFRIs expands, dermatopathologists will see these reactions more commonly and will need to recognize this pattern.

Psychosocial impact of cutaneous toxicities associated with epidermal growth factor receptor-inhibitor treatment

Epidermal growth factor receptor inhibitors (EGFRIs) are an increasingly important class of anticancer agents. Cutaneous toxicities, the most common adverse effects of EGFRI therapy, require dose modification or treatment cessation when moderate or severe and may compromise treatment compliance. To date, assessment has focused on physical symptoms associated with cutaneous toxicities; however, the psychosocial impact of those effects requires greater consideration. This article reviews current knowledge of assessment of cutaneous toxicities and identifies gaps in evidence, with particular focus on the psychosocial impact of cutaneous toxicities. Promising new assessment tools and approaches including the use of electronic patient-reported outcome measures are discussed, as well as implications for research in evaluating psychosocial interventions.