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IPO Profile

Passage BIO, Inc. (PASG)

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3-Year Outlook
First Day Turnover


We are a genetic medicines company focused on developing transformative therapies for rare, monogenic CNS disorders with limited or no approved treatment options. Our vision is to become the premier genetic medicines company by developing and ultimately commercializing therapies that dramatically and positively transform the lives of patients suffering from these life-threatening disorders.

To achieve our vision, we have assembled a world-class team whose members have decades of collective experience in genetic medicines and rare disease drug development and commercialization. The field of genetic medicine is rapidly expanding and we believe we have a differentiated approach to developing treatments for rare, monogenic CNS disorders that enables us to select and advance product candidates with a higher probability of technical and regulatory success. We have entered into a strategic research collaboration with Penn's GTP, headed by Dr. James Wilson, a leader in the genetic medicines field.

Through this collaboration we have assembled a deep portfolio of genetic medicine product candidates, including our three lead product candidates: PBGM01 for the treatment of GM1, PBFT02 for the treatment of FTD and PBKR03 for the treatment of Krabbe disease. We plan to submit INDs for PBGM01 in the first half of 2020, for PBFT02 in the second half of 2020 and for PBKR03 in the second half of 2020, and expect to initiate Phase 1/2 trials for GM1 in the second half of 2020, for FTD in the first half of 2021 and for Krabbe disease in the first half of 2021. We will also continue to explore entering into new collaborations to build our pipeline.

        Our research collaboration with GTP provides us with access to one of the premier research institutions in the world for the discovery and preclinical development of genetic medicine product candidates and exclusive rights to certain rare, monogenic CNS disorders. As part of this collaboration, we have exclusive rights to all discovery work and IND-enabling research for up to 12 rare, monogenic CNS indications that we select. In addition to our three lead product candidates, we have three ongoing discovery programs and an option to license six additional programs from GTP. Further, we have limited exclusive rights to certain new capsid technology arising from GTP for our product candidates within our rare, monogenic CNS field of use. We have global commercial rights to all of our product candidates and believe that our approach to developing therapies for rare, life-threatening diseases that are currently underserved presents an opportunity to efficiently advance our product candidates through clinical development, regulatory approval and ultimately to commercialization.

        We founded Passage Bio with the intent to build a differentiated CNS genetic medicines company delivering transformative therapies to patients by combining our team's experience in rare and neurological disease development, manufacturing and commercialization with the pioneering research expertise of GTP in gene therapy. We are purposefully focusing on rare, monogenic CNS disorders for which we believe our genetic medicine approach provides distinct technical advantages based on decades of research by GTP. GTP conducts rigorous preclinical studies to identify promising product candidates. Our collaboration provides us with access to cutting edge capabilities and innovation in the field of genetic medicine research, including in capsid engineering and next-generation capsid libraries, vector engineering, transgene design and gene therapy modalities, animal disease models and related studies for lead-optimization of product candidates.

Further, we believe our team's deep clinical development experience in rare and neurological diseases will enable well planned clinical trials with the potential for efficient advancement to regulatory approval. In addition, we are engaging with key opinion leaders, practitioners and patient advocacy groups in the field of rare, monogenic CNS disorders that provide strategic input and help inform our clinical development activities. We believe that our ability to execute on the above tenets provides us with product candidates that have an improved profile for clinical development and an enhanced probability of success. 

Investors Pre-IPO Holdings (%)
Google Ventures 30
Intel Ventures 20
Patricoff Ventures 5
Kleiner Perkins 18

Deal Highlights

Deal Tracker

Filing Date   27 Feb, 2020
Price Date   28 Feb, 2020
Offer Price $18.00
Offer Size 12M
Look Up Expiry Date   28 Aug, 2020
Earnings Release Date   Nov 1, 2018