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Completed Phase 1Phase 2 Interventional

Study Assessing PTI-428 Safety, Tolerability, and Pharmacokinetics in Subjects With Cystic Fibrosis

ClinicalTrials.gov ID: NCT02718495

Public ClinicalTrials.gov record NCT02718495. 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 Sep 4, 2026, 1:39 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 Phase I/II, Multi-center, Randomized, Placebo-Controlled, Study Designed to Assess the Safety, Tolerability, and Pharmacokinetics of PTI-428 in Subjects With Cystic Fibrosis

Brief summary

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

This trial will consist of three arms: Part A, Part B, and Part C. Part A has two groups. The first group will enroll adult subjects with cystic fibrosis (CF) into a single ascending dose (SAD) treatment group. The second group will enroll adult subjects with CF, including those on background treatment with ORKAMBI® and those not on a cystic fibrosis transmembrane conductance regulator (CFTR) modulator, into a multiple ascending dose (MAD) treatment group. Part B will enroll adult subjects with CF currently on stable ORKAMBI® background therapy for a minimum of 3 months into a Phase II treatment group consisting of two cohorts. Part C will enroll adult subjects with CF, including those on background treatment with KALYDECO® and those not on a CFTR modulator, into a Phase II treatment group consisting of three cohorts. Approximately 136 subjects will be enrolled.

Study identification

NCT ID
NCT02718495
Recruitment status
Completed
Study type
Interventional
Phase
Phase 1, Phase 2
Lead sponsor
Proteostasis Therapeutics, Inc.
Industry
Enrollment
56 participants

Conditions and interventions

Interventions

Drug

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

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

Study timeline

Start date
Jul 18, 2016
Primary completion
Nov 27, 2017
Completion
Nov 27, 2017
Last update posted
Mar 20, 2019

2016 – 2017

United States locations

U.S. sites
20
U.S. states
16
U.S. cities
19
Facility City State ZIP Site status
Stanford University Medical Center Stanford California 94305
Central Florida Pulmonary Group Altamonte Springs Florida 32803
University of Florida College of Medicine Gainesville Florida 32610
St. Luke's Cystic Fibrosis Center of Idaho Boise Idaho 83712
Northwestern University Memorial Hospital Chicago Illinois 60611
University of Iowa Iowa City Iowa 52242
University of Kansas Medical Center Research Institute, Inc. Kansas City Kansas 66160
Quintiles Overland Park Phase 1 Unit Overland Park Kansas 66211
University of Louisville Louisville Kentucky 40202
Massachusetts General Hospital Boston Massachusetts 02114
Childrens Hospital Boston Boston Massachusetts 02115
Universiy of Michigan Health System Ann Arbor Michigan 48109
Mayo Clinic Rochester Minnesota 55905
Children's Lung Specialists Las Vegas Nevada 89107
Duke University Health System Durham North Carolina 27710
University of Oklahoma Health Sciences Center Oklahoma City Oklahoma 73104
Penn State Milton S. Hershey Medical Center Hershey Pennsylvania 17033
Drexel University College of Medicine Philadelphia Pennsylvania 19107
Medical University of South Carolina Charleston South Carolina 29425
Vanderbilt University Medical Center Nashville Tennessee 37232

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 9 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT02718495, 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 Mar 20, 2019 · Synced Sep 4, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT02718495 live on ClinicalTrials.gov.

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