Dasatinib-Associated Acneiform Eruption Successfully Treated With Sarecycline in a Patient With Chronic Myeloid Leukemia.

Dasatinib is a second-generation tyrosine inhibitor that is used for the treatment of patients with chronic myeloid leukemia (CML). It can cause a myriad of skin toxicities, including pruritis, pigmentary abnormalities of hair and skin, and maculopapular rashes. Rarely, it can be associated with acneiform eruptions, which are typically treated with doxycycline. However, doxycycline may not be an ideal therapy, especially for long-term use, due to the risk of gut flora disruption, antimicrobial resistance, and side effects. We present a case of a CML patient who developed an acneiform eruption associated with dasatinib and was successfully treated with sarecycline, a narrow-spectrum tetracycline. Given its targeted spectrum of activity, sarecycline has a lower risk of antimicrobial resistance and an improved safety profile compared to first- and second-generation tetracyclines such as doxycycline. As acneiform drug eruptions can have a significant impact on a patient's quality of life, effective management by dermatologists is paramount. Sarecycline may be a suitable treatment with a favorable safety profile, making it an appropriate choice for patients, especially those who require long-term therapy.