Inhibitor produces responses in advanced SM

Compassionate use

The phase 2 study results are reinforced by a letter published in the same issue of NEJM, which describes a compassionate use program for midostaurin in advanced SM.

The letter includes results in 28 patients. After a median follow-up of 18.5 months, the overall response rate was 71%. The overall survival rate was 42.7%.

The most frequent adverse events were nausea/vomiting in 89% of patients (leading to failure/discontinuation in 18%), lymphocytopenia in 61% (without opportunistic infection), and photosensitivity in 25%.