A case report of a cardiac side-effect with elevated creatine kinase in a 25 year-old taking Accutane that includes a brief description of several similar cases.
https://www.journalagent.com/tkd/pdfs/TKDA-67055-CASE_REPORT-AKCAY.pdf
A blood clot was found in his heart.
Interesting! When I was getting multiple tests years ago to find out what was wrong with me, I myself had several high CK test results! My doctor told me to avoid exercise before the next test, which I did. He did say he saw CK high like this not very often. Perhaps that was a manifestation of my having taken Accutane and Finasteride in the couple years before I was his patient!