Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Oct 7, 2026, 10:45 AM EDT

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Showing 1–5 of 5 matching trials from the live ClinicalTrials.gov search.
Conditions
Healthy Volunteer - Complete, Cystic Fibrosis - Complete
Interventions
PTI-808, Placebo, PTI-428, PTI-801
Drug
Lead sponsor
Proteostasis Therapeutics, Inc.
Industry
Eligibility
18 Years to 99 Years
Enrollment
179 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
22
States / cities
Tucson, Arizona • Stanford, California • Denver, Colorado + 18 more
Conditions
Healthy Volunteer
Interventions
PTI-428, Placebo, ethinyl estradiol and levonorgestrel
Drug · Other
Lead sponsor
Proteostasis Therapeutics, Inc.
Industry
Eligibility
18 Years to 55 Years · Female only
Enrollment
94 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Overland Park, Kansas
Conditions
Cystic Fibrosis
Interventions
PTI-428, Placebo
Drug
Lead sponsor
Proteostasis Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
26
States / cities
Birmingham, Alabama • Tucson, Arizona • Stanford, California + 21 more
Conditions
Healthy Volunteer, Cystic Fibrosis
Interventions
PTI-801, Placebo, PTI-808
Drug
Lead sponsor
Proteostasis Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
171 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
33
States / cities
Birmingham, Alabama • Anchorage, Alaska • Stanford, California + 28 more
Conditions
Cystic Fibrosis
Interventions
PTI-428, Placebo
Drug
Lead sponsor
Proteostasis Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
20
States / cities
Stanford, California • Altamonte Springs, Florida • Gainesville, Florida + 16 more