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Infigratinib /kg

Phase 3

Achondroplasia | Small molecule | Other |BridgeBio Pharma, Inc.|Last Updated: Mar 17, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindCONTROLLEDDMCBiomarker
Total Trials3
Total Enrollment498
FDA Designations
No designations recorded
Clinical Trials (3)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06164951A Study to Evaluate the Efficacy and Safety of Infigratinib in Children and Adolescents With AchondroplasiaPHASE3 COMPLETED 114Nov 10, 2023Dec 18, 2025Mar 17, 202627 United States, Argentina +8
NCT05145010Extension Study of Infigratinib in Children With Achondroplasia (ACH)PHASE2 ENROLLING BY_INVITATION 300Dec 6, 2021Feb 1, 2032Oct 31, 202531 United States, Argentina +8
NCT04265651Study of Infigratinib in Children With AchondroplasiaPHASE2 COMPLETED 84Mar 10, 2020Oct 21, 2024Oct 22, 202519 United States, Australia +4
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Study Endpoints
Primary Endpoints
Change from baseline (BL) in annualized height velocity (cm/year)
Week 52
Incidence of treatment emergent adverse events (TEAE) and serious TEAE
10 years
Changes over time in height Z-score in relation to ACH and non-ACH growth charts
10 years
Incidence of treatment-emergent adverse events (TEAEs) that lead to dose decrease or discontinuation
Up to 18 months
Change from baseline in annualized height velocity
Up to 18 months
PK parameters of infigratinib (Cmax- PK substudy only)
21 days
PK parameters of infigratinib (Clast- PK substudy only)
21 days
PK parameters of infigratinib (Tmax- PK substudy only)
21 days
PK parameters of infigratinib (AUC24- PK substudy only)
21 days
PK parameters of infigratinib (T1/2- PK substudy only)
21 days
PK parameters of infigratinib (AUCinf- PK substudy only)
21 days
PK parameters of infigratinib (CL/F- PK substudy only)
21 days
PK parameters of infigratinib (Vz/F- PK substudy only)
21 days
PK parameters of infigratinib (Racc- PK substudy only)
21 days
Secondary Endpoints
Change from BL in height Z-score (in relation to ACH tables)
Week 52
Change from BL in upper to lower body segment ratio
Week 52
Change from BL in height Z-score (in relation to non-ACH tables)
Week 52
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Infigratinib 0.25 mg/kg/dayEXPERIMENTALInfigratinib at 2, 3.5, 5, 7, 10 mg
Placebo 0.25 mg/kg/dayPLACEBO_COMPARATORPlacebo Comparator at 2, 3.5, 5, 7, 10 mg
Arm 1: Rollover subjectsEXPERIMENTALChildren who have completed QED-sponsored interventional study with infigratinib (Phase 2 or Phase 3)
Arm 2: Treatment naïve subjectsEXPERIMENTALChildren naïve to infigratinib
Infigratinib 0.016 mg/kgEXPERIMENTALDose Escalation: Infigratinib is provided as minitablets in 2 strengths: 0.1 mg and 1 mg for daily oral administration. The dose and number of minitablets/day will be calculated based on individual participant weight. Doses will be adjusted based on weight changes approximately every 3 months.
Infigratinib 0.032 mg/kgEXPERIMENTALDose Escalation and PK substudy: Infigratinib is provided as minitablets in 2 strengths: 0.1 mg and 1 mg for daily oral administration. The dose and number of minitablets/day will be calculated based on individual participant weight. Doses will be adjusted based on weight changes approximately every 3 months.
Infigratinib 0.064 mg/kgEXPERIMENTALDose Escalation and PK substudy: Infigratinib is provided as minitablets in 2 strengths: 0.1 mg and 1 mg for daily oral administration. The dose and number of minitablets/day will be calculated based on individual participant weight. Doses will be adjusted based on weight changes approximately every 3 months.
Infigratinib 0.128 mg/kgEXPERIMENTALDose Escalation and PK substudy: Infigratinib is provided as minitablets in 2 strengths: 0.1 mg and 1 mg for daily oral administration. The dose and number of minitablets/day will be calculated based on individual participant weight. Doses will be adjusted based on weight changes approximately every 3 months.
Infigratinib 0.25 mg/kgEXPERIMENTALDose Escalation and PK substudy: Infigratinib is provided as minitablets in 2 strengths: 0.1 mg and 1 mg for daily oral administration. The dose and number of minitablets/day will be calculated based on individual participant weight. Doses will be adjusted based on weight changes approximately every 3 months. Dose Expansion: Upon identification of the recommended dose from all cohorts analyzed, an expansion cohort of 20 subjects may begin enrollment to further determine safety, tolerability, efficacy, pharmacokinetics (PK) and pharmacodynamics (PD) of the selected dose.
Interventions
NameTypeDescription
Infigratinib 0.25 mg/kg/dayDRUGDaily doses of oral Infigratinib (sprinkle capsules) at 2, 3.5, 5, 7, 10 mg
Placebo Comparator 0.25 mg/kg/dayDRUGDaily doses of oral Placebo Comparator (sprinkle capsules) at 2, 3.5, 5, 7, 10 mg
InfigratinibDRUGInfigratinib minitablets or sprinkle capsules to be administered by mouth. In subjects that completed a prior study with infigratinib, the starting dose will be the same as the last dose received in the prior interventional study with infigratinib. Infigratinib dose may be adjusted to 0.25 mg/kg/day (the dose selected to be explored further in the dose escalation portion of Phase 2 study QBGJ398-201 (PROPEL 2)).
Infigratinib 0.016 mg/kgDRUGInitial cohort dose of infigratinib at the protocol-specified starting dose, with subsequent cohort escalations based on protocol-specific criteria. Infigratinib tablets to be administered by mouth.
Infigratinib 0.032 mg/kgDRUGSubsequent cohort dose escalation based on protocol-specific criteria. Infigratinib tablets to be administered by mouth.
Infigratinib 0.064 mg/kgDRUGSubsequent cohort dose escalation based on protocol-specific criteria. Infigratinib tablets to be administered by mouth.
Infigratinib 0.128 mg/kgDRUGSubsequent cohort dose escalation based on protocol-specific criteria. Infigratinib tablets to be administered by mouth.
Infigratinib 0.25 mg/kgDRUGSubsequent cohort dose escalation based on protocol-specific criteria. Infigratinib tablets to be administered by mouth.
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Eligibility Criteria
Age Range3 Years — 17 Years
SexALL
Healthy VolunteersNo
Study Sites27

Inclusion Criteria: 1. Subject must be 3 to \<18 years of age at screening with growth potential defined as annualized height velocity of \>1.5 cm/year over a period of at least 6 months of participation in the PROPEL observational study (QBGJ398-001), pubertal Tanner stage ≤4, and bone age ≤13 yea...

Countries:United StatesArgentinaAustraliaCanadaFranceItalyNorwaySingaporeSpainUnited Kingdom
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT05145010primaryCompletionDate: changed
LOWMay 24, 2026NCT05145010studyFirstPostDate: changed