George D. Yancopoulos
Co-Chair, President and Chief Scientific Officer at Regeneron Pharmaceuticals
Thanks, Len. I'd like to start with our recent data update for EYLEA HD. At the EURETINA Meeting last month, we presented the two-year results from the PULSAR study in wet AMD, which demonstrated that the vast majority of EYLEA HD patients randomized to 12- and 16-week dosing intervals continue to sustain vision and anatomic improvements through 96 weeks. 78% of all EYLEA HD patients were able to maintain at least every 12-week dosing intervals for the entire two-year period, with 88% assigned to at least every 12-week dosing by the end of the two-year period. Similarly, 70% of patients randomized to every 16-week dosing at baseline we're able to maintain at least that interval through two years with 78% assigned to at least every 16-week dosing at week 96. Moreover, during the second year, many patients met the criteria for extension to even longer dosing intervals, with 47% meeting the criteria for at least 20-week dosing intervals, including 28% who were eligible for 24-week dosing equals
. The safety profile of EYLEA HD remain consistent with EYLEA, sustaining vision and anatomic improvements while maintaining such extended dosing intervals over two years in both wet AMD and DME is a remarkable advancement for the patients and their physicians. We believe that these results give EYLEA HD the potential to become the new standard of care for these retinal diseases. Moving to our immunology and inflammation pipeline. On Dupixent in COPD, our first pivotal study BOREAS met the primary and all two secondary endpoints in a previously unprecedented success for a biologic in a Phase III study in patients with uncontrolled COPD and evidence of type two inflammation. Based on recent feedback from the FDA, in addition to the positive results from the BOREAS study, a positive interim analysis of the replicate Phase III NOTUS study would enable an sBLA submission.
The independent data monitoring committee will conduct an interim analysis of the NOTUS study later this year. For itepekimab, our anti-IL-33 antibody, the Phase III AERIFY-1 and two studies remain on track for readout and potential regulatory submissions in 2025, both itepekimab and Dupixent could transform the treatment paradigm for COPD by leveraging their distinct mechanisms of actions in reducing different types of inflammation that contribute to COPD disease progression, and we look forward to the results of these studies. Moving to oncology and combination with Libtayo. We remain on target and are currently enrolling our pivotal study of Libtayo combined with our LAG-3 antibody, fianlimab, in first-line metastatic melanoma. We believe this combination may provide a significant advance for patients in this setting based on our encouraging earlier-stage studies.
At the annual ESMO meeting, we presented data from the Phase II trial of neoadjuvant Libtayo treatment for resectable cutaneous squamous cell carcinoma or CSCC, which demonstrated event-free survival for the vast majority, 89% of the patients at one year. It is also noteworthy that of the 51% of patients who had a pathological complete response, none have since experienced disease recurrence. These results add to the growing body of evidence of Libtayo and other checkpoint inhibitors may have utility in earlier stages of CSCC and other malignancies. To further explore this, we are conducting a Libtayo trial in adjuvant CSCC for patients at heightened risk. We're also evaluating the combination of the Libtayo and fianlimab in adjuvant melanoma, and plan to initiate a study of this combination in the perioperative melanoma setting as well.
On to bispecifics. First in hematology/oncology. We are pleased that odronextamab, our CD20 timesCD-III bispecific, was recently accepted for review by both the FDA and European regulatory authorities in relapsed/refractory follicular lymphoma and diffuse large B-cell lymphoma. Based on the pivotal Phase II data from the ELM-II study, we have initiated a robust OLYMPIA Phase III development program, investigating odronextamab as monotherapy as well as in combination with current standards of care in earlier lines of follicular lymphoma and DLBCL. We are looking forward to the pivotal data presentations from ELM-II later this year. We're also on track to submit our regulatory application for linvoseltamab our BCMAxCD3 antibody for relapsed/refractory multiple myeloma by the end of the year. This bispecific may potentially offer best-in-class efficacy and convenience.
The LINKER-MM-III confirmatory Phase III study [Indecipherable] linvoseltamab monotherapy compared to a standard of care regimen is enrolling and studies in earlier lines of multiple myeloma and other plasma cell diseases will be enrolling soon. Finally, in addition to the ongoing Phase I combination study of odronextamab in our CD22 timesCD20 co-stimulatory bispecific, we're also on track to initiate a study of linvoseltamab with a corresponding costimulatory bispecific next year. Next, on to bispecifics for solid tumors, which are being investigated in combination with Libtayo and other modalities. At ESMO, we shared initial clinical data for the combination of ubamatamab, our MUC16 timesCD-III bispecific with Libtayo in advanced ovarian cancer. In these early data, promising durable responses were observed with ubamatamab monotherapy as well as encouraging combination activity with Libtayo with evidence of turnaround responses after initial progression on monotherapy leading in multiple patients upon addition of the Libtayo.
A randomized Phase II expansion study is ongoing to evaluate two active monotherapy doses of ubamatamab, with the lower dose also tested in combination with Libtayo in order to optimize dosing and evaluate the potential added activity of Libtayo. In addition, we're exploring ubamatamab in multiple rare cancers that are known to express high levels of MUC16. In terms of our costimulatory bispecifics for solid tumors, we are currently exploring multiple different CD28 costimulatory bispecific antibodies in early clinical trials in a variety of tumor settings in combination with Libtayo with corresponding CD3 bispecifics. We are continuing development of our PSMAxCD28 co-stimulatory bispecific in advanced prostate cancer, focusing and identifying the window of opportunity for maintaining the remarkable antitumor activity observed this treatment while minimizing serious toxicity.
In order to explore this, we have expanded enrollment in the PSMAxCD28 monotherapy cohort, and we'll soon initiate cohorts in which investigators will have an option of adding a low dose of cemiplimab to the PSMAxCD28 treatment in certain patients. Moreover, we plan to initiate a trial combining PSMA/CD28 with PSMA/CD3 since, based on preclinical data CD28 costims with appropriate CD3 bispecifics may yield antitumor activity without severe immune-mediated adverse events. We also hope to progress an additional prostate specific CD3 bispecific towards the clinic in the next year, which we may also combine with our PSMA costimulatory bispecific. In terms of our MUC16 timesCD28 costim in combination with Libtayo in ovarian cancer, we are planning on presenting initial data by the end of the year. Regarding our EGFRxCD28 costim in combination with Libtayo, we are planning on presenting updated dose escalation data in 2024.
We will soon commence enrollment across eight tumor-specific expansion cohorts in the study, including colorectal cancer with or without liver metastasis, as well as EGFR mutant non-small cell lung cancer. Now to genetic medicines. We and Intellia recently announced expansion of our research collaboration to include Regeneron's proprietary antibody target delivery technology, with the goal of expanding the reach of in vivo gene editing to neurological and muscle diseases. The aim of this expanded collaboration is to address a current bottleneck in genetic medicine, the inability to deliver genetic payload beyond the liver. Our proprietary preclinically validated antibody-directed AAV approach will initially test two in vivo nonliver targets. Additionally, we and Intellia announced FDA clearance to start a pivotal Phase III trial of NTLA-2001 for the treatment of ATTR amyloidosis with cardiomyopathy.
The first time in investigational in vivo CRISPR-based gene therapy editing is clear to enter a late-stage clinical development in the United States. The trial is expected to initiate by year-end 2023. Moving to our Alnylam collaboration. Alnylam recently presented updated interim ALN-APP data in early onset Alzheimer's disease. Updated data showed that single doses of ALN-APP achieved sustained robust reduction in APP alpha and APP beta measured in the CSF up to 10 months after administration, as well as reduction of amyloidogenic peptides implicated in Alzheimer's disease and cerebral amyloid angiopathy. Alnylam has also announced that a first patient has been redosed with ALN-APP in the multi-dose portion of the study currently proceeding outside of the United States. We and Alnylam plan to initiate additional clinical programs for neurodegenerative diseases, including for amyotrophic lateral sclerosis next year.
Finally, I would like to highlight DB-OTO, our otoferlin gene therapy, Regeneron's first clinical program for genetic hearing loss, which we've developed over the last few years in collaboration with Decibel Therapeutics, a company we recently acquired. Last week, we announced the first preliminary results from this trial. A child who received an intraocular injection of DB-OTO in one year experienced improvements in hearing tests in that year through week six compared to baseline, including both auditory brainstem responses as well as behavioral audiometry. We are looking forward to continuing evaluation of this innovative approach in the ongoing trial for the ultra-rare otoferlin gene related hearing loss, as well as in other planned clinical programs, which include more common forms of genetic hearing loss. In conclusion, Regeneron's R&D engine continues to grow and deliver differentiated late and early-stage opportunities, and we are looking forward to progress in the remainder of this year and looking ahead to 2024.
With that, I will turn it over to Marion.