BridgeBio Announces Durable Month 12 and 18 Phase 2 Cohort 5 Results of Oral Infigratinib in Achondroplasia, and First Participant Consented in ACCEL for Hypochondroplasia

– In Cohort 5 of PROPEL 2 (0.25 mg/kg/day), oral treatment with infigratinib resulted in a statistically significant and sustained increase in annualized height velocity (AHV), with a mean change from baseline of +2.51cm/yr at Month 12, and +2.50 cm/yr at Month 18 (p=0.0015)

– At Month 18, there was a statistically significant improvement in body proportionality (p-value of 0.001). The mean upper to lower body segment ratio was 1.88 at Month 18, as compared to 2.02 at baseline

– Infigratinib continues to be well-tolerated as a single daily oral therapy with no adverse events (AEs) assessed as treatment-related in any participant in Cohort 5

– PROPEL 3, the global Phase 3 registrational study of infigratinib in achondroplasia, continues to enroll on schedule, with completion estimated by end of 2024

– BridgeBio announces first child consented in ACCEL, the observational run-in study for infigratinib in children living with hypochondroplasia, a skeletal dysplasia closely related to achondroplasia and similarly driven by FGFR3 gain-of-function variants

Excerpt from the Press Release:

PALO ALTO, Calif., June 04, 2024 (GLOBE NEWSWIRE) — BridgeBio Pharma, Inc. (Nasdaq: BBIO) (BridgeBio), a commercial-stage biopharmaceutical company focused on genetic diseases, today announced sustained positive results from PROPEL 2, a Phase 2 trial of the investigational therapy infigratinib in children with achondroplasia, demonstrating continued potential best-in-class efficacy and an encouraging safety profile. Infigratinib is an oral small molecule designed to inhibit FGFR3 signaling and target achondroplasia and hypochondroplasia at their source. BridgeBio will also host an investor call on June 4, 2024, at 8:00 am ET with Ravi Savarirayan, M.D., Ph.D., of Murdoch Children’s Research Institute in Melbourne, Australia, and the global lead investigator for PROPEL 2, to discuss the results from the Phase 2 study.

To date, key results from the Cohort 5 dose escalation cohort in PROPEL 2 trial include:

• Sustained and statistically significant mean increase in AHV of +2.51cm/year from baseline at 12 months, and +2.50 cm/yr at 18 months (p=0.0015)

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