Higher severity grade of erlotinib-induced rash is associated with lower skin phototype.
Summary of "Higher severity grade of erlotinib-induced rash is associated with lower skin phototype."
Background.  Epidermal growth factor receptor inhibitors (EGFRIs) are associated with a characteristic papulopustular rash, an adverse event considered to be a class effect of these agents. Erlotinib, a small-molecule EGFRI, causes a papulopustular rash in 68-75% of patients. The limited reported data suggest that deleterious effects of ultraviolet radiation (UVR) may enhance the development of EGFRI-induced rash. Because the level of the biological pigment melanin correlates with increased protection against UVR, we hypothesized that lighter levels of skin pigmentation are associated with greater severity of rash. Aim.  To characterize the relationship between skin phototype (SPT) and rash severity. Methods.  A retrospective chart review was conducted of 40 patients on erlotinib. Skin sensitivity to UVR was categorized using the Fitzpatrick SPT classification scheme. Grading of rash was performed using the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE), version 3. Results.  There was an inverse relationship between SPT and rash severity. Grade 0 was seen in the majority of patients with SPT V/VI, grade 1/2 in the majority of patients with SPT III/IV, and grade 3/4 rash in the majority of patients with SPT I/II (grade 0: 7% SPT I/II, 32% SPT III/IV and 50% SPT IV/V; grade 1/2: 33%, 63% and 50%, respectively; grade 3/4: 60%, 5% and 0%, respectively) (P < 0.01, Fisher exact test). Conclusions.  Prevention and management of cutaneous side-effects from EGFR inhibitors is important to achieve maximum patient compliance and therapeutic benefit. The results of this study suggest that SPT may be an independent predictive factor for EGFRI-induced papulopustular rash, thus pre-therapy counselling and early intervention are important.
Affiliation
Northwestern University Feinberg School of Medicine, Chicago, IL, USA SERIES Clinic, Department of Dermatology, Chicago, IL, USA Robert H, Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA Department
Journal Details
This article was published in the following journal.
Name: Clinical and experimental dermatology
ISSN: 1365-2230
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21689147
- DOI: http://dx.doi.org/10.1111/j.1365-2230.2011.04117.x
Medical and Biotech [MESH] Definitions
Asthma, Exercise-induced
Asthma attacks following a period of exercise. Usually the induced attack is short-lived and regresses spontaneously. The magnitude of postexertional airway obstruction is strongly influenced by the environment in which exercise is performed (i.e. inhalation of cold air during physical exertion markedly augments the severity of the airway obstruction; conversely, warm humid air blunts or abolishes it).
Carcinoma, Mucoepidermoid
A tumor of both low- and high-grade malignancy. The low-grade grow slowly, appear in any age group, and are readily cured by excision. The high-grade behave aggressively, widely infiltrate the salivary gland and produce lymph node and distant metastases. Mucoepidermoid carcinomas account for about 21% of the malignant tumors of the parotid gland and 10% of the sublingual gland. They are the most common malignant tumor of the parotid. (From DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p575; Holland et al., Cancer Medicine, 3d ed, p1240)
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Toxoplasmosis, Congenital
Prenatal protozoal infection with TOXOPLASMA gondii which is associated with injury to the developing fetal nervous system. The severity of this condition is related to the stage of pregnancy during which the infection occurs; first trimester infections are associated with a greater degree of neurologic dysfunction. Clinical features include HYDROCEPHALUS; MICROCEPHALY; deafness; cerebral calcifications; SEIZURES; and psychomotor retardation. Signs of a systemic infection may also be present at birth, including fever, rash, and hepatosplenomegaly. (From Adams et al., Principles of Neurology, 6th ed, p735)
Hyperthermia, Induced
Abnormally high temperature intentionally induced in living things regionally or whole body. It is most often induced by radiation (heat waves, infra-red), ultrasound, or drugs.
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