MIMRYLO™ (rusfertide) has a favorable safety profile as seen in the largest pivotal trial in PV1-3

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The safety of MIMRYLO was assessed in 285 adult patients in the VERIFY trial1

Duration of exposure in the VERIFY trial1,4:

  • 87% of patients were exposed for ≥28 weeks
  • 65% of patients were exposed ≥52 weeks


The safety of MIMRYLO was studied both alone and in combination with CRTs.1,4-6

The most common (>15%) adverse reactions were injection site reactions (56%), and anemia (16%).1

Common Adverse Reactions

In the VERIFY trial, most adverse reactions observed with MIMRYLO (Weeks 0-32) were low grade and did not lead to treatment discontinuation1,4

Adverse reactions in ≥5% of patients with a difference of ≥5 percentage points between the MIMRYLO and control arms
Table: common adverse reactions ≥5% with MIMRYLO vs control; injection site reactions 56% vs 33%, anemia 16% vs 4.1%

*Includes anemia and hemoglobin decreased.1
Includes thrombocytosis and platelet count increased.1
Includes dyspnea and dyspnea exertional.1

5.5% taking MIMRYLO discontinued due to adverse reactions (Weeks 0-32) vs 2.7% with control arm; mild to moderate.

Serious adverse reactions and discontinuations

In the safety population of 285 patients, a serious adverse reaction of anemia occurred in one (0.4%) patient who received MIMRYLO. Five patients discontinued MIMRYLO due to adverse reactions: two (0.7%) due to injection site reactions, two (0.7%) due to thrombocytosis, and one (0.4%) due to anemia.1

Across the whole trial (Weeks 0-52), the majority of common adverse reactions were mild to moderate1,4

The most common (>15%) adverse reactions across the full 52-week trial of injection site reactions (47%) and anemia (26%) were consistent in occurrence and grading with Weeks 0-32.
ADDITIONAL SAFETY INFORMATION

Additional safety information in the VERIFY trial

Increases in platelet counts were observed in some patients within 4 weeks of treatment initiation. Generally, platelet counts plateaued on treatment by Week 8.1

There was no evidence of increased cancer risk in patients treated with MIMRYLO (Weeks 0-32) compared with the control arm (2.1% vs 5.5%). For the MIMRYLO patients who stayed on treatment through Week 52, the rate was 3.0%.4
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CRT=cytoreductive therapy; PV=polycythemia vera.

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