- |||||||||| PTI-801 / Proteostasis
CURRENT STATUS OF THE PROTEOSTASIS THERAPEUTICS CFTR MODULATOR DEVELOPMENT PROGRAM (205) - Nov 11, 2019 - Abstract #NACFC2019NACFC_50; P1/2 Similarly, in vitro CFTR activity of the triple combination of PTI 801 and PTI 808 with the PTI 428 amplifier is superior to that seen with tezacaftor/ivacaftor in combination with VX-659 (corrector) in homozygous and heterozygous F508del cell cultures (data to be presented)...A phase 2 study is currently ongoing to evaluate the effects of PTI 808 in combination with PTI 801, with or without PTI 428, over a 28-day treatment period in CF subjects who are either homozygous or heterozygous for the F508del CFTR genotype. The goal is to initiate a phase 3 study in 2020.
- |||||||||| Symdeko (tezacaftor/ivacaftor) / Vertex, PTI-428 / Proteostasis
INITIAL RESULTS EVALUATING THE FIRST-IN-CLASS CFTR AMPLIFIER, PTI-428, IN SUBJECTS WITH CF ON BACKGROUND TREATMENT WITH TEZACAFTOR/ IVACAFTOR () - Nov 11, 2019 - Abstract #NACFC2019NACFC_24; Treatment with PTI-428 led to an increase in CFTR protein production of approximately 50% in subjects with CF on background treatment with tezacaftor/ivacaftor, similar to that seen with PTI-428 plus lumacaftor/ivacaftor. Subject selection may explain the differential impact of PTI-428 on ppFEV1 on backgrounds of lumacaftor/ivacaftor versus tezacaftor/ivacaftor, and thus provides an important example of possible selection bias in the current era of the availability of multiple CFTR modulators.
- |||||||||| PTI-808 / Proteostasis, PTI-428 / Proteostasis, PTI-801 / Proteostasis
EVALUATION OF NOVEL CFTR MODULATOR COMBINATIONS OF THE CORRECTOR PTI-801, POTENTIATOR PTI-808, AND AMPLIFIER PTI-428 IN CF SUBJECTS () - Nov 11, 2019 - Abstract #NACFC2019NACFC_8; In vitro, in human bronchial epithelial cells from F508del homozygous donors, the combinations of PTI-801+PTI-808 and PTI-801+PTI-808+PTI-428 increased CFTR chloride transport activity by 193% and 369%, compared to that of tezacaftor+ivacaftor, respectively, suggesting a superior in vitro response to a currently approved modulator combination. PTI-801, PTI-808 and PTI-428 represent novel CFTR modulators in clinical development.
- |||||||||| Symdeko (tezacaftor/ivacaftor) / Vertex, PTI-428 / Proteostasis
INITIAL RESULTS EVALUATING THE FIRST-IN-CLASS CFTR AMPLIFIER, PTI-428, IN SUBJECTS WITH CF ON BACKGROUND TREATMENT WITH TEZACAFTOR/ IVACAFTOR () - Nov 11, 2019 - Abstract #NACFC2019NACFC_7; Treatment with PTI-428 led to an increase in CFTR protein production of approximately 50% in subjects with CF on background treatment with tezacaftor/ivacaftor, similar to that seen with PTI-428 plus lumacaftor/ivacaftor. Subject selection may explain the differential impact of PTI-428 on ppFEV1 on backgrounds of lumacaftor/ivacaftor versus tezacaftor/ivacaftor, and thus provides an important example of possible selection bias in the current era of the availability of multiple CFTR modulators.
- |||||||||| dirocaftor (PTI-808) / Kineta
Phase classification, Enrollment change, Trial completion date, Trial primary completion date: Study Designed to Assess the Safety, Tolerability and PK of PTI-808 in Healthy Volunteers and in Adults With Cystic Fibrosis (clinicaltrials.gov) - Jun 17, 2019 P1/2, N=180, Recruiting, Subject selection may explain the differential impact of PTI-428 on ppFEV1 on backgrounds of lumacaftor/ivacaftor versus tezacaftor/ivacaftor, and thus provides an important example of possible selection bias in the current era of the availability of multiple CFTR modulators. Phase classification: P1 --> P1/2 | N=135 --> 180 | Trial completion date: Jun 2019 --> Jan 2020 | Trial primary completion date: Jun 2019 --> Jan 2020
- |||||||||| nesolicaftor (PTI-428) / Kineta
Trial completion: Study to Assess the Safety, Tolerability, PK, ECG Effects, Food Effect, and Drug-drug Interaction (DDI) of Hormonal Contraceptives of PTI-428 in Healthy Female Volunteers (clinicaltrials.gov) - May 29, 2018 P1, N=94, Completed, Active, not recruiting --> Recruiting Recruiting --> Completed
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