A Double-blind, Placebo-controlled Study of the Safety and Efficacy of Vitamin K1 Ointment for the Treatment of Patients with Cetuximab-induced Acneiform Eruption.
ABSTRACT A double-blind, placebo-controlled study evaluating the efficacy and safety of vitamin K1 ointment for the treatment of patients with cetuximab-induced acneiform eruption has started. Vitamin K1 ointment and placebo are applied twice daily for 8 consecutive weeks after the development of acneiform eruptions. Vitamin K1 ointment is applied in the middle of one side (face, neck or chest) and placebo is applied to the other side. The primary endpoint is the regression rate of acneiform eruptions on right- and left-side lesions in the same patient, compared with baseline at the final evaluation in the 10-week trial. The secondary endpoints include adverse events of acneiform eruption and other adverse events.
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ABSTRACT: The use of epidermal growth factor receptor (EGFR) inhibitors in several epithelial tumors has increased considerably in recent years. Currently, they are approved in non-small cell lung cancer (NSCLC), pancreatic cancer, colorectal cancer and head and neck cancer. Skin toxicity is a class-specific side effect that is typically manifested as a papulopustular rash in the majority (45-100%) of patients receiving EGFR inhibitors. The skin toxicity is related to the inhibition of EGFR in the skin, which is crucial for the normal development and physiology of the epidermis. Although rarely life-threatening, skin toxicity may cause significant physical and psycho-social discomfort. Nevertheless, the presence and severity of skin rash is associated with improved clinical efficacy in patients receiving EGFR inhibitors. The goal of managing EGFR inhibitor-associated skin toxicity is to minimize the detrimental effects of the rash on patients' quality of life and treatment course without antagonizing the clinical efficacy of EGFR inhibitors. There is currently no evidence-based treatment guideline to prevent or treat the EGFR inhibitor-associated skin toxicities. Expert panels recommend a proactive, multidisciplinary approach that includes patient education and the use of a grade-based treatment algorithm. Elucidation of the mechanisms of EGFR inhibitor-associated skin toxicity and development of mechanism-based novel therapies are urgently needed. Preclinical data suggest topical application of a potent phosphatase inhibitor menadione (Vitamin K3) can rescue the inhibition of EGFR and downstream signaling molecules in the skin of mice receiving systemic EGFR inhibitor erlotinib or cetuximab. A randomized, double-blinded, placebo-controlled study has been initiated to evaluate the clinical efficacy of menadione topical cream, in the treatment or prevention of EGFR inhibitor-induced skin toxicity.Targeted Oncology 06/2009; 4(2):107-19. · 3.46 Impact Factor
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ABSTRACT: Panitumumab, a fully human monoclonal antibody targeting the epidermal growth factor receptor (EGFR), is approved in the United States and Europe for the treatment of refractory metastatic colorectal cancer (mCRC). Skin toxicities are the most common adverse events with EGFR inhibitors. This is the first study designed to examine differences between pre-emptive and reactive skin treatment for specific skin toxicities in patients with mCRC for any EGFR inhibitor. Patients receiving panitumumab-containing therapy were randomly assigned 1:1 to pre-emptive or reactive treatment (after skin toxicity developed). Pre-emptive treatment included use of skin moisturizers, sunscreen, topical steroid, and doxycycline. The primary end point of the study was the incidence of protocol-specified >or= grade 2 skin toxicities during the 6-week skin treatment period. Quality of life (QOL) was assessed with the Dermatology Life Quality Index (DLQI). Of 95 enrolled patients, 48 received pre-emptive treatment, and 47 received reactive treatment. The incidence of protocol-specified >or= grade 2 skin toxicities during the 6-week skin treatment period was 29% and 62% for the pre-emptive and reactive groups, respectively. Mean DLQI score change from baseline to week 3 was 1.3 points and 4.2 points in the pre-emptive and reactive groups, respectively. The pre-emptive skin treatment regimen was well tolerated. The incidence of specific >or= grade 2 skin toxicities during the 6-week skin treatment period was reduced by more than 50% in the pre-emptive group compared with the reactive group. Patients in the pre-emptive group reported less QOL impairment than patients in the reactive group.Journal of Clinical Oncology 02/2010; 28(8):1351-7. · 17.88 Impact Factor
- Radiology and Oncology 01/2008; 42(4):215-224. · 1.60 Impact Factor