Proven to be effective with a well-established safety profile

Average change from baseline in HFMSE score over 52 weeks for ages 2-12. 2.2 points
Average change from baseline in HFMSE score over 52 weeks for ages 2-12. 2.2 points

34.2% of people aged 2-12 years (n=53) taking ISEMBYLD with an SMN2-targeted treatment experienced improvements of

3 points or more on the HFMSE scale

Compared to 13.5% of people aged 2-12 years (n=50) taking SMN2-targeted treatment alone.

How ISEMBYLD was studied

The efficacy of ISEMBYLD in people 2 years of age and older with SMA was demonstrated in a placebo-controlled clinical study called SAPPHIRE. The study included 188 people who were 2 to 21 years of age. All patients in the study were receiving an SMN2-targeted treatment and were non-ambulatory at baseline. The study measured motor function using scores from the Hammersmith Functional Motor Scale–Expanded (HFMSE), a tool specifically designed to evaluate motor function in SMA. See the full study design

98 percent

The Hammersmith Functional Motor Scale–Expanded (HFMSE) offers a way to test motor function abilities that are important to your daily life, such as sitting up, rolling over, and standing independently. It measures 33 common movements, each graded 0 (unable to perform the action) to 2 (able to perform the action), producing an overall score from 0 to 66 points.

Any increase in your HFMSE score
may help support your ability to complete day-to-day tasks:

1- to 2-point gains

Any increase in your HFMSE score
may help support your ability to complete day-to-day tasks:

1- to 2-point gains

The safety profile for ISEMBYLD was demonstrated in the SAPPHIRE study

The most common side effects reported with ISEMBYLD were:

  • Upper respiratory tract
    infections
  • Vomiting
  • Cough
  • Viral infections
  • Headache
  • Stomach flu (gastroenteritis)
  • Sore throat (pharyngitis)
  • Hypersensitivity

These are not all of the possible side effects of ISEMBYLD. Call your doctor for medical advice about side effects.

Treatment with ISEMBYLD may increase the risk of bone fractures, including serious fractures. Bone fractures may happen with or without a fall or other injury. Your healthcare provider may consider stopping treatment with ISEMBYLD if you experience a bone fracture during treatment.

You’ve seen the results. Now it’s time to talk to your doctor.

MOVE FORWARD WITH ISEMBYLD