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Completed Phase 1Phase 2 Interventional Results available

Trilaciclib (G1T28) in Patients With Previously Treated Extensive Stage SCLC Receiving Topotecan Chemotherapy

ClinicalTrials.gov ID: NCT02514447

Public ClinicalTrials.gov record NCT02514447. 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 24, 2026, 11:55 PM EDT

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

Official title

Phase 1b/2a Safety and Pharmacokinetic Study of G1T28 in Patients With Previously Treated Extensive Stage Small Cell Lung Cancer (SCLC) Receiving Topotecan Chemotherapy

Brief summary

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

This was a study to investigate the potential clinical benefit of trilaciclib (G1T28), a Cyclin Dependent Kinase (CDK) 4/6 inhibitor, in preserving the bone marrow and the immune system, in order to decrease chemotherapy-induced myelosuppression and improve anti-tumor efficacy when administered prior to topotecan in patients previously treated for extensive-stage SCLC. The study consisted of 2 parts: a limited open-label, dose-finding portion (Part 1), and a randomized double-blind portion (Part 2). Both parts included 3 study phases: Screening Phase, Treatment Phase, and Survival Follow-up Phase. The Treatment Phase began on the day of first dose with study treatment and completes at the Post-Treatment Visit.

Study identification

NCT ID
NCT02514447
Recruitment status
Completed
Study type
Interventional
Phase
Phase 1, Phase 2
Lead sponsor
G1 Therapeutics, Inc.
Industry
Enrollment
123 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
Oct 4, 2015
Primary completion
Sep 27, 2018
Completion
Oct 3, 2021
Last update posted
Sep 24, 2025

2015 – 2021

United States locations

U.S. sites
35
U.S. states
17
U.S. cities
31
Facility City State ZIP Site status
Genesis Cancer Center Hot Springs Arkansas 71913 —
Highlands Oncology Group Rogers Arkansas 72758 —
Compassionate Cancer Care Medical Group, Inc. Corona California 92879 —
Sutter Medical Group Sacramento California 95816 —
The Oncology Institute of Hope and Innovation Whittier California 90603 —
Memorial Hospital - University of Colorado Health Colorado Springs Colorado 80909 —
Rocky Mountain Cancer Centers Denver Colorado 80218 —
University of Colorado Health, Oncology Clinical Research Northern Region Fort Collins Colorado 80528 —
Florida Cancer Specialists - South Fort Myers Florida 33916 —
Florida Cancer Specialists - North Tavares Florida 32778 —
University Cancer and Blood Center, LLC Athens Georgia 30607 —
Emory University Atlanta Georgia 30322 —
Northside Hospital - Georgia Cancer Specialists Atlanta Georgia 30341 —
Saint Luke's Cancer Institute Kansas City Missouri 64111 —
Norris Cotton Cancer Center Lebanon New Hampshire 03756 —
North Shore Hematology Oncology Associates PC East Setauket New York 11733 —
Regional Medical Oncology Center Wilson North Carolina 27893 —
Gabrail Cancer Center Canton Ohio 44718 —
Oklahoma University - Peggy and Charles Stephenson Cancer Center Oklahoma City Oklahoma 73117 —
Guthrie Medical Group, PC Sayre Pennsylvania 18840 —
AnMed Health Anderson South Carolina 29621 —
Greenville Health System Greenville South Carolina 29605 —
Gibbs Cancer Center Spartanburg South Carolina 29303 —
Hanna Cancer Associates - University of Tennessee Knoxville Tennessee 37920 —
Meharry Medical College Nashville Tennessee 37208 —
Sarah Cannon Research Institute Nashville Tennessee 37232 —
Texas Oncology- Baylor Charles A. Sammons Cancer Center Dallas Texas 75246 —
M.D. Anderson Houston Texas 77030 —
Millennium Oncology Houston Texas 77090 —
Southwest Cancer Center Lubbock Texas 79415 —
Texas Oncology Tyler Texas 75702 —
The University of Texas Health Science Center at Tyler Tyler Texas 75708 —
Virginia Cancer Specialists Fairfax Virginia 22031 —
Virginia Oncology Associates Norfolk Virginia 23502 —
Northwest Cancer Specialists, P.C. Vancouver Washington 98684 —

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 15 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT02514447, 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 Sep 24, 2025 · Synced Sep 24, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT02514447 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →