Independent directory Public ClinicalTrials.gov records United States
ClinicalTrials.gov record
Completed Phase 1 Interventional Accepts healthy volunteers

Study Assessing the Safety, Tolerability, Pharmacokinetics, Food Effect, and Drug-Drug Interactions of PTI-801 in Healthy Volunteers, and Safety, Tolerability, and Pharmacokinetics of PTI-801 in Subjects With Cystic Fibrosis

ClinicalTrials.gov ID: NCT03140527

Public ClinicalTrials.gov record NCT03140527. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 17, 2026, 8:22 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Multi-Center, Randomized, Placebo-Controlled, Phase 1, Two-Part Study Designed to Assess the Safety, Tolerability, Pharmacokinetics, Food Effect, and Drug-Drug Interactions of PTI-801 in Healthy Volunteers, and Safety, Tolerability, and Pharmacokinetics of PTI-801 in Subjects With Cystic Fibrosis

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This trial will consist of two parts: Part 1 and Part 2. Part 1 will enroll adult healthy volunteers (HV) into four treatment groups. The first group will enroll HV into a single ascending dose (SAD) treatment group consisting of three cohorts. The second group will enroll HV into a multiple ascending dose (MAD) treatment group consisting of three cohorts. The third group will enroll HV into a food effect (FE) treatment group consisting of one cohort. The fourth group will enroll HV into a drug-drug interactions (DDI) treatment group consisting of one cohort. Approximately 76 subjects will be enrolled in Part 1. Part 2 Cohorts 1 through 3 will enroll adult subjects with cystic fibrosis (CF) currently on stable ivacaftor/lumacaftor background therapy for a minimum of three months. Part 2 Cohorts 4 and Cohort 5 will enroll adult subjects with CF not currently receiving cystic fibrosis conductance regulator (CFTR) modulator therapy within 30 days prior to Day 1. Part 2 Cohort 6 will enroll adult subjects with cystic fibrosis on stable tezacaftor/ivacaftor background therapy. Approximately 104 subjects will be enrolled in Part 2.

Study identification

NCT ID
NCT03140527
Recruitment status
Completed
Study type
Interventional
Phase
Phase 1
Lead sponsor
Proteostasis Therapeutics, Inc.
Industry
Enrollment
171 participants

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Accepts healthy volunteers

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Apr 10, 2017 (Actual)
Primary completion
Feb 27, 2020 (Actual)
Completion
Feb 27, 2020 (Actual)
Last update posted
Apr 30, 2020

2017 – 2020

United States locations

U.S. sites
33
U.S. states
23
U.S. cities
31
Facility City State ZIP Site status
University of Alabama at Birmingham Birmingham Alabama 35233 —
Providence Alaska Medical Center Anchorage Alaska 99508 —
Stanford University Medical Center Stanford California 94305 —
National Jewish Health Denver Colorado 80206 —
Central Florida Pulmonary Group Altamonte Springs Florida 32803 —
University of Florida College of Medicine Gainesville Florida 32610 —
University of Miami Health System Miami Florida 33136 —
St. Luke's CF Center of Idaho Boise Idaho 83712 —
Northwestern University Memorial Hospital Chicago Illinois 60611 —
OSF Saint Francis Medical Center Peoria Illinois 61637 —
University of Iowa Iowa City Iowa 52242 —
Maine Medical Center Portland Maine 04102 —
Massachusetts General Hospital Boston Massachusetts 02114 —
Boston Children's Hospital Boston Massachusetts 02115 —
University of Michigan Health System Ann Arbor Michigan 48109 —
Children's Mercy Kansas City Kansas City Missouri 64108 —
University of Nebraska Medical Center Omaha Nebraska 68198 —
Children's Lung Specialists Las Vegas Nevada 89107 —
Columbia University Medical Center New York New York 10001 —
Mount Sinai Beth Israel New York New York 10003 —
New York Medical College Valhalla New York 10595 —
Duke University Health System Durham North Carolina 27710 —
Akron Children's Hospital Akron Ohio 44308 —
Nationwide Children's Hospital Columbus Ohio 43205 —
Toledo Children's Hospital Toledo Ohio 43606 —
Santiago Reyes, M.D. P.C. Oklahoma City Oklahoma 73112 —
Children's Hospital of Philadelphia Philadelphia Pennsylvania 19104 —
Children's Hospital of Pittsburgh of UPMC Pittsburgh Pennsylvania 15244 —
Medical University of South Carolina Charleston South Carolina 29425 —
ICON Early Phase Services San Antonio Texas 78209 —
University of Texas Health Science Center at Tyler Tyler Texas 75708 —
University of Utah Salt Lake City Utah 84132 —
Virginia Commonwealth University Richmond Virginia 23298 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 5 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT03140527, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Apr 30, 2020 · Synced Oct 17, 2026

Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.

Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT03140527 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →