CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 123 enrolled
Drug / intervention
Trilaciclib +2 moredrug
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT02514447
NCT02514447Phase 2Completed

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

G1 Therapeutics, Inc.·interventional·Posted Aug 3, 2015·Updated Sep 25, 2025

In Brief

A Phase 2 clinical trial evaluating Trilaciclib, Placebo, and 1 other intervention for Small Cell Lung Cancer. Completed, enrolled 123 participants across 50 sites in 8 countries.

Detailed Summary

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 Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesBelgium, Bosnia and Herzegovina, Croatia, North Macedonia, Serbia, Slovakia, Slovenia, United States
Collaborators--

Timeline

Phase 2CompletedFinished
20162017201820192020202120222023202420252026
First PostedAug 3, 2015
Enrollment StartOct 5, 2015
Primary CompletionSep 28, 2018
Study CompletionOct 4, 2021
TodayJul 2, 2026
Enrollment to primary: 3.0 yearsPosted 10.9 years ago

Interventions

Trilaciclibdrug

Placebodrug

Topotecandrug