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Use of vemurafenib in a patient unable to swallow whole
Brett Janson1, James Whittle2, Kate Witney3
1Pharmacy Department, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia brett.janson@petermac.org.
Abstract:
The treatment landscape for metastatic melanoma has increased dramatically in the past five years, with the pivotal discovery of activating BRAF mutations in half of all melanomas spurring the development for effective treatments that target mitogen-activated protein kinase (RAS/RAF/MEK/ERK) pathway. Vemurafenib, a selective mutant BRAF Val600 inhibitor, results in striking tumour responses and a survival advantage over conventional chemotherapy. We present here the case of a 38-year-old woman with metastatic BRAFV600E mutant melanoma and a severe tablet phobia, who was found to have been crushing and/or chewing her vemurafenib tablets. In this case, she attained a partial response and significant clinical benefit, albeit temporarily.
Insights
A patient with metastatic melanoma and tablet phobia achieved temporary clinical benefit by altering vemurafenib administration. This highlights alternative dosing strategies for targeted BRAF inhibitor therapy.
Area of Science:
- Oncology
- Pharmacology
- Dermatology
Background:
- Metastatic melanoma treatment has advanced with targeted therapies.
- Activating BRAF mutations are common in melanoma, leading to targeted therapies like vemurafenib.
- Vemurafenib is a selective BRAF Val600 inhibitor demonstrating efficacy in metastatic melanoma.
Observation:
- A 38-year-old woman with metastatic BRAFV600E melanoma presented with severe tablet phobia.
- The patient was observed to be crushing and/or chewing her vemurafenib tablets.
- This administration method deviated from standard oral tablet intake.
Findings:
- Despite altered administration, the patient achieved a partial response to vemurafenib.
- Significant clinical benefit was noted, although it was temporary.
- The findings suggest potential for alternative drug delivery methods in specific patient populations.
Implications:
- This case suggests that altered administration of vemurafenib may yield clinical benefit in patients with administration challenges.
- It underscores the importance of considering patient-specific factors, such as phobias, in treatment adherence.
- Further investigation into alternative formulations or administration techniques for BRAF inhibitors may be warranted.
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