This early phase I trial studies the side effects of ketoconazole and how well it works in treating participants with ongoing EGFR inhibitor-induced rash. Ketoconazole may reduce the symptoms related to EGFR inhibitor therapy and improve EGFR inhibitor-induced rash.
PRIMARY OBJECTIVES: I. To demonstrate that topical ketoconazole, an anti-androgen, palliates EGFR inhibitor-induced rash within a group of racially diverse cancer patients. II. To explore the role of ribonucleic acid (RNA) sequencing to identify other targets that might be used at a later date for rash palliation. III. To evaluate toxicities associated with topical ketoconazole. OUTLINE: Participants are randomized to 1 of 2 arms. ARM I: Participants apply ketoconazole topically twice daily (BID) on days 1-28. ARM II: Participants apply placebo topically BID on days 1-28. After completion of study treatment, participants are followed up at 1 week.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
DOUBLE
Enrollment
58
Carle on Vermilion
Danville, Illinois, United States
Carle Cancer Center
Urbana, Illinois, United States
Mayo Clinic in Rochester
Rochester, Minnesota, United States
Park Nicollet Frauenshuh Cancer Center
Saint Louis Park, Minnesota, United States
Proportion of patients who report an improvement in skin rash
Assessed by Skindex-16. Will be estimated using the cumulative incidence function with time to improvement defined as the time from randomization to the first of the two consecutive weeks of improved symptom. The cumulative incidence of rash improvement after 4 weeks of treatment will be summarized separately by treatment arm. The difference in rash improvement incidences will be estimated and will be compared using two-sample Z-test.
Time frame: Up to 4 weeks
Incidence of skin toxicity
As measured by the Skindex-16. Responses to the Skindex-16 will be categorized into three subscales: symptom, emotional, and functional. Analysis of the total scales and subscales of the Skindex-16 will involve a t-test and Wilcoxon rank sum procedures (as appropriate) at each time point as well as linear mixed modeling. Descriptive factors will be used as covariates in the modeling analysis. The change from baseline in the total score and subscales of the Skindex-16 will be compared between two arms by a two-sample, two-sided t-test. If there is evidence of non-normality (via Shapiro-Wilk testing), a non-parametric procedure such as Wilcoxon rank sum will be used.
Time frame: Up to 4 weeks
Incidence of skin toxicity
As measured by the Skin Toxicity Assessment Tool (STAT). Responses to the STAT will be categorized into three subscales: symptom, emotional, and functional. Analysis of the total scales and subscales of the STAT will involve a t-test and Wilcoxon rank sum procedures (as appropriate) at each time point as well as linear mixed modeling. Descriptive factors will be used as covariates in the modeling analysis. The change from baseline in the total score and subscales of the STAT will be compared between two arms by a two-sample, two-sided t-test. If there is evidence of non-normality (via Shapiro-Wilk testing), a non-parametric procedure such as Wilcoxon rank sum will be used.
Time frame: Up to 4 weeks
Incidence of adverse events for ketoconazole
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Ancillary studies
Ancillary studies
Regions Hospital
Saint Paul, Minnesota, United States
University of Rochester
Rochester, New York, United States
Adverse events will be tabulated by treatment arm. Frequencies of various types of adverse events (AEs) will be compared using Fisher's exact test. Will explore the difference in reliability of the direct versus (vs.) indirect AE attribution approaches in the placebo arm.
Time frame: Up to 4 weeks