Bill Schelman
Analyst · Stifel
Thanks, Ryan, and good morning, everyone. HPV-negative head and neck cancer is biologically distinct from HPV-positive disease. These tumors overexpress EGFR and are rich in TGF-beta, which suppresses the immune response and drives resistance to therapy. FICERA was designed to inhibit both EGFR and TGF-beta and to work synergistically with immunotherapy, overcoming barriers in the tumor microenvironment so that the drug and immune cells can penetrate the tumor. When I speak with treating physicians, what they tell me matters most for their patients is depth and durability of response as they believe these yield the greatest long-term outcomes like overall survival. By pursuing that clear mechanistic biologic fit, we believe FICERA has the potential to redefine the standard of care in first-line recurrent or metastatic HPV-negative head and neck cancer, which represents roughly 80% to 90% of cases globally. I want to take a few minutes to revisit the long-term Phase Ib data we presented at ASCO this year because while FORTIFI-HN01 remains blinded and ongoing, they are the clearest window we have into FICERA's clinical profile. As these data mature, we believe they continue to derisk the pivotal study on the endpoints that matter most, response rate, complete response rate, as a measure of depth and most importantly, duration of response, progression-free survival and overall survival. At the 1,500-milligram weekly pivotal dose with a median follow-up of 3 years, FICERA plus pembrolizumab achieved a confirmed objective response rate of 54% and a complete response rate of 25%. As a clinician, what stands out to me is the depth of those responses. Specifically, 80% of responders had tumor shrinkage of 80% or more. Responses came quickly at a median of about 6 weeks, and they were durable with a median duration of response of nearly 22 months. Median progression-free survival was 9.9 months, roughly 3x what has been reported for pembrolizumab alone and median overall survival was just over 21 months. Most importantly, about 1 in 3 patients was alive at 3 years. That's roughly double what real-world data would lead us to expect with pembrolizumab alone in HPV-negative patients. We continue to believe that these clinical results are driven by TGF-beta and the role it plays in remodeling the tumor microenvironment to allow for greater depth of response. When we pool patients across all 3 dose cohorts in our Phase Ib study, 750 milligrams weekly, 1,500 milligrams weekly and 2,000 milligrams every 2 weeks, those with deep responses remained in response for a median of more than 2.5 years, and they went nearly 3 years without progression. We haven't yet reached median overall survival in that group. Our paired biopsy showed reduced TGF-beta signaling in the tumor and greater CD8 T cell infiltration. We believe that immune cell penetration potentiates immunotherapy translating into more durable responses. With new data emerging in head and neck cancer, including recent results reported across both HPV-positive and HPV-negative patients, I think it's important to look at the context behind our data. In these patients, tumor characteristics matter as much as the efficacy numbers themselves. First, HPV status. Every patient in our Phase Ib data set was HPV negative, and it's the only population we are enrolling in FORTIFI-HN01. These patients have the worst prognosis in head and neck cancer. So every number you've heard from me today comes from the hardest-to-treat patients. It's also why results broken out by HPV status are essential to interpreting any data set in this disease. Second, site of disease. Most patients at our pivotal dose had local regional disease, either alone or resistant metastases. Local regional recurrence is typically harder to treat because previously irradiated tissue can limit how well a drug reaches the tumor. Third, PD-L1 expression. Half of our patients in the Phase Ib study had a CPS below 20, where checkpoint inhibitors have historically been least effective, yet responses with FICERA plus pembrolizumab were essentially the same regardless of CPS. And fourth, tumor burden. Nearly half of patients had large bulky tumors where rapid and deep responses matter most. In these patients, clinicians have historically added chemotherapy. FICERA has shown rapid responses and tumor debulking and offers the potential for a chemotherapy-sparing regimen in this setting. Taken together, our data come from a more symptomatic, harder-to-treat population, often with worse outcomes and a significant impact on quality of life. With up to 3 years of follow-up, that makes the depth and durability we have observed and their potential to translate into overall survival, all the more notable. We remain confident in FICERA's potential to deliver meaningful outcomes for patients living with HPV-negative head and neck cancer and to change clinical practice. Ultimately, we believe the Phase III data will define how this treatment landscape evolves, and we look forward to sharing our pivotal results. With that, I'll turn it over to Chris to talk about the commercial opportunity.