Biogen (BIIB), AbbVie (ABBV) Announce Significant ZINBRYTA Data in NEDA vs AVONEX
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A new post-hoc analysis from the pivotal DECIDE study shows that a significantly greater number of people treated with ZINBRYTA (daclizumab) achieved no evidence of disease activity (NEDA) compared to those taking AVONEX® (interferon beta-1a) intramuscular injection. The findings continue to support the positive impact of ZINBRYTA on NEDA status. Additional new interim data from the long-term extension study, EXTEND, further affirm ZINBRYTA’s efficacy on clinically meaningful measures of multiple sclerosis (MS) disease activity and provide additional information supporting ZINBRYTA’s safety profile. These results were presented by Biogen (NASDAQ: BIIB) and AbbVie (NYSE: ABBV) at the 32nd Congress of the European Committee for Treatment and Research in Multiple Sclerosis (ECTRIMS) in London.
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“ZINBRYTA is a new, once-monthly, self-administered, subcutaneous treatment option for people living with relapsing forms of MS, including those whose disease activity has been insufficiently controlled by their prior therapy,” said Ralph Kern, M.D., senior vice president, Worldwide Medical, Biogen. “These data continue to reinforce ZINBRYTA’s robust efficacy in reducing MS relapse rates, disability progression and brain lesion development, and help further define its long-term safety profile. ZINBRYTA is now available in the United States and Germany, and will soon be introduced in additional European countries.”
New NEDA Analysis Shows Significantly Greater Efficacy Versus Interferon Beta-1a
Previously reported findings from a post-hoc analysis of the Phase 3 DECIDE study demonstrated that a significantly greater percentage of patients taking ZINBRYTA achieved NEDA status at 96 weeks compared to those taking an active comparator, AVONEX.1 A new post-hoc analysis presented at ECTRIMS examined the percentage of patients achieving NEDA status by time interval (including 24–96 weeks) to further evaluate the impact of ZINBRYTA on this measure. NEDA was defined as the composite of no clinical relapses, no 12-week confirmed disability progression, no new/newly enlarging T2 hyperintense lesions and no gadolinium-enhancing (Gd+) lesions.
Results of this new analysis show that significantly more ZINBRYTA-treated patients achieved overall NEDA status compared to AVONEX-treated patients during the first six months of treatment, and that the difference between the treatments was more evident in the 24–96 week time period:
- Baseline to week 24: 41.5 percent of ZINBRYTA patients achieved NEDA status compared to 32.6 percent of AVONEX patients (p<0.0001).
- Weeks 24–96: 44.7 percent of ZINBRYTA patients achieved NEDA status compared to 22.4 percent of AVONEX patients (p<0.0001).
“ZINBRYTA had previously demonstrated significant efficacy in helping patients achieve NEDA status compared to AVONEX at week 96. This new analysis looked at ZINBRYTA’s effectiveness on NEDA both during the first six months and the following 18 months of treatment to take into account the potential impact of pre-existing disease activity, and found the efficacy of ZINBRYTA on NEDA to be more evident at the end of the evaluation period,” said Professor Gavin Giovannoni, Chair of Neurology, Blizard Institute, Barts and The London School of Medicine and Dentistry.
Interim EXTEND Data Reinforce Long-Term Efficacy and Further Define Safety Profile
The first interim results from EXTEND were also presented at ECTRIMS, including up to five years of data from patients previously enrolled in DECIDE. The data show that treatment with ZINBRYTA was associated with long-term benefits in the proportion of patients who remained relapse-free, as well as those who did not experience 24-week confirmed disability progression. EXTEND is an ongoing, Phase 3, open-label extension study assessing the safety and efficacy of ZINBRYTA. Patients who were treated with AVONEX for two to three years (median of 26 months) in the DECIDE study switched to ZINBRYTA when they enrolled in EXTEND, and were compared to ZINBRYTA patients continuously treated in both DECIDE and EXTEND.
The safety profile of ZINBRYTA was similar to that observed in the controlled clinical trial, DECIDE. The overall incidence of serious adverse events (AEs), excluding MS relapses, remained stable over time. Most AEs of special interest, including hepatic (liver) AEs, cutaneous (skin) AEs, infections and lymphadenopathy (abnormal enlargement of lymph nodes), were mild to moderate in severity. The interim EXTEND results provide additional data supporting the long-term safety profile of ZINBRYTA.
The interim efficacy data show:
- The annualized relapse rate (ARR) for patients who took ZINBRYTA continuously in the DECIDE and EXTEND studies remained stable (0.195 vs. 0.156, respectively).
- Patients who switched to ZINBRYTA in the EXTEND study experienced a decrease in ARR from 0.317 during the earlier treatment period with AVONEX, to 0.152 after receiving ZINBRYTA.
- From baseline to week 48 in EXTEND, improvements in MRI data were observed across EXTEND study participants (based on new T2 hyperintense lesions, new T1 hypointense lesions and the number of Gd+ lesions).
- Patients treated continuously with ZINBRYTA from DECIDE baseline up to week 192 experienced a 21 percent relative risk reduction in 24-week confirmed disability progression, compared with patients who were treated with AVONEX in DECIDE and then switched to ZINBRYTA in EXTEND (hazard ratio: 0.79; 95% confidence interval: 0.62–1.00; p=0.047).
A Complete List of ZINBRYTA ECTRIMS Data Presentations Includes:
- Poster Session 1 – Thursday, 15 September – 15:45-17:00 PM BST
- Accumulation of Disability on the Neurophysical Disability Progression Composite: Daclizumab vs. Interferon Beta-1a in Relapsing-Remitting Multiple Sclerosis Patients from the DECIDE Study (P606)
- Characterisation of the Lymphadenopathy Events Observed in the Daclizumab Clinical Trials (P632)
- Cutaneous Events in Daclizumab-Treated Patients Did Not Impact Patient-Reported Outcomes in the DECIDE Study (P612)
- Efficacy of Daclizumab Versus Intramuscular Interferon Beta-1a in Patients Without Neutralising Antibodies Against Interferon Beta in the DECIDE Study (P618)
- Efficacy of Daclizumab vs. Intramuscular Interferon Beta-1a on 24-Week Sustained Disability Progression Using a Modified Multiple Sclerosis Functional Composite (P629)
- Interim Report on the Safety and Efficacy of Long-Term Daclizumab Treatment for Up to Five Years (EXTEND Trial) (P653)
- Achievement of No Evidence of Disease Activity by Time Interval with Daclizumab vs. Intramuscular Interferon Beta-1a Treatment in DECIDE (P664)
- ePoster – Available in ECTRIMS Online Library and App
- A Pre-Filled Pen for Daclizumab: Safety, Usability, and Patient Satisfaction (EP1482)
About the DECIDE Study
DECIDE was a two- to three-year, Phase 3, global, randomized, double-blind, multicenter study in patients with relapsing forms of multiple sclerosis (RMS) designed to determine if ZINBRYTA would provide superior outcomes for certain clinical endpoints compared to treatment with AVONEX® (interferon beta-1a) 30 mcg intramuscular (IM) injection. DECIDE was an active comparator study with two groups: 150 mg of subcutaneous ZINBRYTA every four weeks (n=919) was compared to AVONEX IM once weekly (n=922).
About the EXTEND Study
EXTEND is an ongoing, multicenter, open-label, Phase 3 extension study that is evaluating the long-term safety and efficacy of ZINBRYTA in patients with relapsing forms of multiple sclerosis (RMS) who completed the DECIDE, SELECTED or OBSERVE studies. The study has enrolled more than 1,500 RMS patients, who will receive 150 mg of subcutaneous ZINBRYTA every four weeks for up to five years.
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