ASH Clinical News ACN_5.6_SUPP_DIGITAL_correction_p20 | Page 3

NOW APPROVED Effi cacy in treatment-naïve patients (N=29) 1 72% CR/CRc rate* 90% ORR 45% bridged to stem cell transplantation * CRc = clinical complete response; defi ned as complete response with residual skin abnormality not indicative of active disease. 2 CR = complete response; ORR = overall response rate. Median duration of CR/CRc has not yet been reached in treatment-naïve patients (range, 1.3-32.2+ months). 1 Median overall survival has not yet been reached; median follow-up 23.0 months (range, 0.2-41.0+ months). 1 In the pivotal cohort, treatment-naïve patients (N=13) achieved a 54% CR/CRc rate, 77% ORR, and 46% bridged to stem cell transplantation. 1,2 ELZONRIS TM (tagraxofusp-erzs) was evaluated in treatment-naïve and previously-treated patients with BPDCN in an open-label, multicenter clinical study (N=44). The pivotal cohort consisted of 13 treatment-naïve patients. 1,2 VISIT ELZONRIS.COM/HCP FOR MORE INFORMATION. Hypersensitivity Reactions ADVERSE REACTIONS: • ELZONRIS can cause severe hypersensitivity reactions. Grade 3 or higher events were reported in 10% of patients in clinical trials. Monitor patients for hypersensitivity reactions during treatment with ELZONRIS. Interrupt ELZONRIS infusion and provide supportive care as needed if a hypersensitivity reaction should occur. If the reaction is severe, discontinue ELZONRIS permanently Hepatotoxicity • Elevations in liver enzymes can occur with ELZONRIS. Grade 3 or higher elevations in liver enzymes occurred in approximately 40% of patients in clinical trials • Monitor alanine aminotransferase (ALT) and aspartate aminotransferase (AST) prior to each infusion with ELZONRIS. Temporarily withhold ELZONRIS if the transaminases rise to greater than 5 times the upper limit of normal (ULN) and resume treatment upon normalization or when resolved The most common adverse reactions in the clinical trials (incidence ≥ 30%) are capillary leak syndrome, nausea, fatigue, peripheral edema, pyrexia, and weight increase. The most common laboratory abnormalities (incidence ≥ 50%) are decreases in albumin, platelets, hemoglobin, calcium, sodium, and increases in glucose, ALT, and AST. Please see Brief Summary of full Prescribing Information, including Boxed WARNING, on the following pages. To report SUSPECTED ADVERSE REACTIONS, contact Stemline Therapeutics, Inc. at 1- 877-332-7961 or contact the FDA at 1- 800-FDA-1088 or www.fda.gov/medwatch. References: 1. Data on fi le. Stemline Therapeutics, Inc. 2. ELZONRIS [prescribing information]. New York, NY, US: Stemline Therapeutics, Inc.; December 2018.