Abemaciclib Plus Ramucirumab for Esophageal/Gastroesophageal Junction Ca

NCT ID: NCT04921904

Last Updated: 2025-11-10

Basic Information

• Recruitment Status: ACTIVE_NOT_RECRUITING
• Clinical Phase: PHASE1/PHASE2
• Total Enrollment: 8 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2021-06-11
• Study Completion Date: 2026-06-30

Brief Summary

CDK4/6 and Cyclin D1 are significantly expressed in approximately 80% of esophageal and gastroesophageal junction tumors suggesting that CDK4/6 inhibition may be a successful strategy in these chemotherapy and immunotherapy resistant diseases.

Detailed Description

This is a multicenter, open label, phase I/II safety study that will enroll 30 subjects with metastatic esophageal and gastroesophageal junction adenocarcinomas post first line systemic chemotherapy. Subjects will be treated with oral Abemaciclib 150 mg PO daily bid given with ramucirumab 8mg/kg every 2 weeks iv until evidence of disease progression or unacceptable toxicities.

A total of 30 subjects will be enrolled. The primary goal is to describe the safety profile of Abemaciclib in combination with Ramucirumab among all enrolled subjects.

If grade 3 or higher treatment-related adverse events occur in 20 subjects, the upper bound of 95% Wilson confidence interval for the adverse event rate would be below 81% (16.7% - 47.9%).

The safety analysis will be performed in all treated subjects. Adverse event data will be listed individually and graded according to the National Cancer Institute Common Terminology Criteria, version 4.03.

Summary statistics will include counts and proportions as well as rates with 95% confidence intervals. Toxicities will be reported as a tabulated table by type and grade.

Objective response rate is defined as the percentage of subjects who achieve an objective response by RECIST1.1 criteria (i.e. Complete response or Partial Response) to Abemaciclib in combination with Ramucirumab. We will estimate the objective response rate, along with the Wilson 95% confidence interval, for the population of subjects.

Overall survival will be defined as the time from study enrollment to death. This will be summarized using a Kaplan-Meier curve.

The proportion of subjects with grade 4 or higher treatment-related adverse events will be monitored continuously throughout the trial using a Bayesian stopping guideline. A Beta (1, 19) prior, representing a toxicity rate of 5%, slightly lower than the expected rate of 6%, was used in the development of our guidelines. The therapy will be re-evaluated if the posterior probability that the toxicity rate exceeds 10% is greater than 75%. Table 3 summarizes the stopping boundaries starting with the initial cohort of 3 subjects through the maximum sample size of 30 subjects.

The probability of triggering the stopping guidelines was assessed for a range of possible toxicity rates using simulations with 5000 replicates. The probability of stopping to re-evaluate was 1% if the true proportion with an unacceptable toxicity was 5%. In comparison, the probability of stopping early was 99.6% if the true proportion with an unacceptable toxicity was 40%

Conditions

Metastatic Esophageal Adenocarcinoma; Metastatic Gastroesophageal Junction Adenocarcinoma

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Abemaciclib plus Ramucirumab

Abemaciclib 150mg dose administered orally twice daily every day plus Ramucirumab dose 8mg/kg iv every 2 weeks until evidence of disease

Group Type: EXPERIMENTAL

Abemaciclib

Intervention Type: DRUG

150mg dose administered orally twice daily every day

Ramucirumab

Intervention Type: DRUG

8mg/kg iv every 2 weeks until evidence of disease

Interventions

Abemaciclib

150mg dose administered orally twice daily every day

Intervention Type: DRUG

Ramucirumab

8mg/kg iv every 2 weeks until evidence of disease

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• All subjects must have metastatic esophageal or gastroesophageal junction carcinomas (adenocarcinoma only)
• ECOG performance status of 0 or 1
• Tumor tissue must be available for correlative studies - Either a formalin fixed paraffin block or a minimum of ten 5-micron tissue section's (slides) of tumor biopsy sample must be available for biomarker evaluation.
• Patients must have received at least one prior line of standard systemic therapy for recurrent or Stage IV disease, and that patients with HER2 overexpression have received an anti-HER2 drug.

Exclusion Criteria

• Squamous cell carcinomas
• Mixed histology with small cell component

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Baylor Research Institute

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Ronan Kelly, MD

Role: PRINCIPAL_INVESTIGATOR

Charles A Sammons Cancer Center/Texas Oncology

Locations

Baylor University Medical Center, Charles A Sammons Cancer Center

Dallas, Texas, United States

Countries

United States

Other Identifiers

020-055

Identifier Type: -

Identifier Source: org_study_id