Jonathan Zalevsky
Analyst · Piper Sandler
Thanks, Howard, and thank you, everyone, on the call for joining us today. To begin, I'll remind you that earlier this year, the RESOLVE-AD Phase IIb results demonstrated the promise of Nektar's novel approach to the IL-2 pathway. The global study randomized 393 patients with moderate to severe atopic dermatitis to receive subcutaneous treatment with 3 doses of REZPEG, a high dose of 24 microgram per kilogram every 2 weeks, a middle dose of 18 microgram per kilogram every 2 weeks and a low dose of 24 microgram per kilogram every 4 weeks or placebo every 2 weeks for an induction period of 16 weeks. Following week 16, REZPEG-treated patients who achieved EASI reductions of 50% or greater were rerandomized to continue at the same dose level on a Q4-week or Q12-week regimen for an additional 36-week maintenance period. In our June data disclosure, we reported that the study achieved statistical significance on the primary endpoint at week 16 for a mean percent change in EASI score from baseline for all REZPEG arms versus placebo. And the study achieved statistical significance for key secondary endpoints at week 16 of disease reduction, including EASI-75, EASI-90, Itch NRS, the vIGA-AD and BSA. Additionally, we have yet to see a plateau in the efficacy response in the REZPEG treatment arms. This study is currently ongoing with 2 additional upcoming data readouts that Howard mentioned. The first will be the 36-week maintenance study results, which compare treatment with REZPEG at either 1 month or 3-month dosing intervals out to a full year, which would be the intended maintenance-based dosing regimens following the 16-week induction period. And the second readout will be the 1-year off-treatment data expected in the beginning of 2027, which will measure the potential remittive effect of REZPEG in atopic dermatitis. In the meantime, we continue to add to the compelling data set from the RESOLVE-AD study, including the data we shared from the escape arm of the trial at this year's EADV Congress. As a reminder, the study design allows for patients who originally received placebo in the 16-week induction period and achieved less than EASI-50 at week 16 to enter into an open-label treatment escape arm to receive the high-dose REZPEG regimen for a treatment period of up to 36 weeks. The data presented at EADV demonstrated a deepening of responses in these patients with continuous treatment with REZPEG and support a 24-week induction period for our Phase III program. As Howard stated earlier, we are presenting additional data in patients with asthma from RESOLVE-AD in a late-breaking oral presentation at the ACAAI meeting being held in Orlando, Florida this weekend. In addition to the asthma data that I'll discuss in a moment, that presentation will also give an update on the placebo crossover data, where now all but one patient have crossed 24 weeks of treatment with 24 microgram per kilogram REZPEG Q2 weeks. We will also cover additional endpoints such as EASI-90 and itch NRS. In addition, the presentation will show a forest plot demonstrating the consistency of REZPEG efficacy across multiple subgroups. This important finding prepares us for Phase III. Given that 1 in 4 patients with atopic dermatitis also have asthma, we designed the study in advance to evaluate its effect on symptoms of asthma using the validated 5-point asthma control questionnaire, also known as the ACQ-5. And these data include a prespecified exploratory endpoint for the subset of patients in RESOLVE-AD that also had asthma, including those with moderate and uncontrolled asthma at baseline. The ability to improve comorbid conditions is a substantial factor in clinical treatment decisions for atopic dermatitis and could expand the potential market opportunity for REZPEG in this setting. We know that beyond Dupixent, neither tralokinumab nor lebrikizumab has been able to show an improvement in asthma symptoms in patients with atopic dermatitis. And this extends to the OX40 programs in late-stage development as well. And now turning to alopecia areata. We are on track and look forward to reporting data from the Phase IIb study in December of this year. A positive outcome here would reinforce the potential of REZPEG to provide a completely new treatment paradigm for patients with chronic dermatological diseases. The RESOLVE-AA trial was initiated in March 2024. A total of 94 patients with severe to very severe alopecia areata who have not received a JAK inhibitor or other biologic were randomized to 2 different dose regimens of REZPEG, 24 microgram per kilogram every 2 weeks and 18 microgram per kilogram every 2 weeks or placebo. Patients were recruited across approximately 30 sites globally with 2/3 of patients enrolled in Europe and the rest from North America. As a reminder, patient eligibility for this study was determined using the SALT score, both screening and randomization. Patients who experienced an unstable course of alopecia areata over the last 6 months per investigator assessment were excluded from the study and patients with diffuse alopecia and other forms of alopecia were also excluded. The primary efficacy endpoint of this study will evaluate mean percent change in the severity of alopecia tool or SALT score at the end of the 36-week induction period. Secondary endpoints include proportion of patients achieving SALT 20, which is an absolute SALT score of less than or equal to 20, mean percent improvement in SALT score at other assessed time points and proportion of participants with greater than or equal to 50% reduction in SALT score at week 36 and other assessed time points. Importantly, SALT 20, the responder analysis is also the established regulatory endpoint for Phase III trials. As Howard mentioned, the only available systemic therapies that are FDA approved for the treatment of alopecia areata are JAK inhibitors, which contain a number of black box warnings and many patients experience hair loss after treatment cessation. With the limited treatment options available in alopecia areata, we believe there's opportunity for a novel mechanism like REZPEG, especially when the therapeutic is shown to be safe and well tolerated. When comparing the outcomes from RESOLVE-AA to the approved JAKs, we see low-dose Olumiant as the appropriate benchmark. In its 2 Phase III trials, the approved 2 mg dose of Olumiant showed that 15% to 16% of patients achieved SALT 20 on a placebo-adjusted basis at week 36, and the mean improvement in SALT scores from baseline was 24% to 26% on a placebo-adjusted basis. Note that the placebo response rate in these trials is relatively low at 3% to 5% for the SALT 20 endpoint and 4% to 9% on the mean reduction endpoint. Because of our differentiated mechanism of action compared to the JAK inhibitors and our safety profile, we see a very clear market opportunity for REZPEG in alopecia areata if REZPEG achieves these benchmarks. We look forward to sharing the top line data from the 36-week treatment period of the RESOLVE-AA study in December and defining the potential for REZPEG in this new indication. Similar to atopic dermatitis, with positive results from Phase IIb, we would move very quickly into Phase III preparations, taking advantage of our Fast Track designation in the alopecia areata indication. A quick few words on type 1 diabetes, another autoimmune disease where REZPEG has great potential as a T regulatory mechanism. We believe REZPEG can potentially slow the progressive loss of insulin-producing beta cells, which are the target of the patient's overactive immune cells in this disease. As Howard mentioned, TrialNet has initiated and is funding an investigator-sponsored Phase II clinical trial evaluating REZPEG in 66 patients with new onset type 1 diabetes. Lastly, on our pipeline progression, NKTR-0165, our TNFR2 agonist remains on track. This molecule has very high specificity for signaling through TNFR2 on Tregs to enhance and optimize their ability to regulate the immune system. NKTR-0165 has also shown that a strong signal can be generated through a single-arm monovalent antibody, making it a perfect candidate for inclusion in bispecific and trispecific constructs. Our goal is to advance one of these antibody programs into the clinic next year. We look forward to sharing more on these sophisticated antibody engineering programs in future earnings calls. And I'll now turn it over to Sandy for the financials. Sandy?