Eliseo Salinas
Analyst · Yun Zhong from BTIG
Thank you, Bruce. First, I will start by discussing our progress with site activations and patient identification efforts for our three lead programs. Passage Bio is in a unique position with each of our three clinical trial programs operating globally, which allow us to be where the patients are. In total, we have an international network of clinical sites at various stages of activation across nine countries in three continents. Despite COVID-19 continuing to impact hospitals and clinical sites across the world, we have activated six sites in the last three months. including two international sites, and we plan to open additional sites in the U.S. and in eight other countries in the next few months. It is because of our international clinical trial approach, our focus on activating multiple clinical sites in parallel. And our ongoing patient identification initiatives that we anticipate having patients dosed in all three of our clinical programs before the end of the year. The initiatives I’ll point to as examples of our extensive patient identification efforts include: first, our collaboration with a broad network of disease experts and community leaders. And second, our partnerships with service companies offering free genetic testing and counseling for the three disease areas targeted by our lead programs. Genetic testing is particularly important, as we have heard from physicians, that this is the one of the critical barriers to early diagnosis. As part of our commitment to patient and physician communities, we will continue to explore ways of reducing this barrier globally. For example, we are working to support early and accurate identification of newborns with Krabbe disease. Early diagnosis is critical because of the rapid decline of patients with this devastating disease. Multiple work in this area has been in partnership with advocacy organizations working state-by-state to encourage statewide adoption of newborn screening requirements. We are pleased with our promise in identifying patients and know that what we are doing now will be instrumental to the ongoing success of our global multiyear clinical programs. Now I will provide a brief update on each of our clinical programs. Our PBGM01 program utilizes a next-generation proprietary AAVhu68 capsid to deliver a common optimized GLB1 gene to increase beta-galactosidase enzyme activity in the brain and peripheral tissues. We are focused on the infantile form of GM1 gangliosidosis, which is the most severe form of the disease with a very rapid disease course and no current treatment options beyond supportive care. The Imagine-1 global Phase I/II trial is an open label dose escalation study that will enroll 4 distinct cohorts divided by age and dose level. The first cohort is composed of late onset infantile patients receiving the initial dose of PBGM01. I am pleased to report that we now have four active clinical sites open for enrollment, and plan to open additional sites here in the U.S. and in four other countries in the next few months. We also remain on track to report first-in-human data from Cohort 1 later this quarter. The primary goal of Cohort 1 is to assess safety and tolerability, allowing for dose escalation and progress into the early infantile cohorts. The data we plan to report will include initial safety information, including results from nerve conduction studies as well as beta-galactosidase activity levels in CSF and serum inventory. We also plan to share IDMC’s assessment on progressing the study to the early infantile and higher dose late infantile cohorts, which may be enrolled in parallel. We have also made significant progress enrolling patients in the prospective GM1 natural history study with more than 10 patients now enrolled. This study will provide important data to improve understanding of overall disease progression and meaningful outcome measures. We look forward to discussing the Imagine-1 data with you before the end of this year. Moving on to our global PBKR03 program in Krabbe disease called GALax-C. Krabbe disease is a condition that progresses rapidly, damaging both the brain and the peripheral nervous system and resulting in a life expectancy of only two years in the severe cases. So far, we have activated two sites and are making significant progress in opening additional sites in the U.S. and in four other countries, paving the way for us to build the first patient for this Krabbe in the fourth quarter of 2021. GALax-C is an open-label, dose escalation study of PBKR03 in patients with early infantile Krabbe disease. The study will run similarly to our Imagine-1 trial, first, evaluating an initial dose of PBKR03 in late onset patients and then progressing into early onset and high dose cohorts have during assessment of Cohort 1. Additionally, there will be a confirmatory expansion cohort for both age groups once the dose escalation phase of the study is completed. The main goal of this study is to assess the safety and tolerability of ascending doses of PBKR03 in patients with early infantile Krabbe disease as well as to assess the impact of GALC in CSF and serum. Turning to our third program, PBFT02, for frontotemporal dementia with granulin mutations. FTD is one of the more common causes of early onset dementia where there is an impairment in behavior, language and executive function and, of course, a similar frequency to Alzheimer’s disease in patients younger than 65 years old. The rapid progression of FTD results in an average survival of eight years after onset of symptoms. We are specifically focused on FTD granulin, where the disease, of course, because of mutations in the granulin gene causing the efficiency of progranulin. It is estimated that about 5% to 10% of FTD is caused by a granulin mutation. Our global Phase I/II clinical trial upliFT-D is an open-label dose escalation study of PBFT02 in FTD granulin patients. So far, we have received regulatory authorization to initiate clinical trials in both the United States and Canada, and we expect three additional country authorizations in the next three months. We plan to enroll two cohorts of three patients each receiving two different ascending doses of PBFT02 with an optional third cohort treatment with higher dose depending on safety and enzyme results observed in the first two cohorts. We have opened our first clinical trial site. And as we said, are on track to dose the first patient in the fourth quarter of this year. We also have made significant progress advancing site initiation activities at other sites and expect to open those sites soon. Like our other lead programs, our key goals are to assess the safety and durability of ascending doses of PBFT02 as well as its impact on programming levels. In addition to our progress with our three clinical programs, we are making significant strides with our earlier stage pipeline programs and our new discovery research efforts in temporal lobe epilepsy and Alzheimer’s disease. We look forward to sharing more about these efforts in 2022. Advancing program for CNS diseases requires tremendous support from a variety of stakeholders. And I would like to conclude that recognizing and thanking the caregivers, self-care providers, advocacy organizations and patients in the GM1 Krabbe disease and SPV communities. With that, I will now turn the call over to Simona to review our financials.