Afatinib Genomic Landscape

Genomic Landscape of EGFR Mutant NSCLC Prior to Afatinib and at the Time of Disease Progression Following Afatinib

The investigators propose to conduct a pilot feasibility study of single agent afatinib in patients with previously untreated metastatic EGFR (epidermal growth factor receptor) mutant adenocarcinoma of the lung (NSCLC = non-small cell lung cancer) with the sole purpose of characterizing the genomic landscape before afatinib and at the time of disease progression.

Study Overview

• Status: Terminated
• Conditions: Carcinoma, Non-Small-Cell Lung; Non-Small Cell Lung Cancer; Non-small Lung Cancer

Detailed Description

The current proposal will include exome and transcriptome sequencing from blood collected at baseline along with tumor samples obtained prior to starting afatinib and at the time of disease progression (a total of two tissue samples and one blood sample per patient). The samples will be collected via consent to the IRB (Institutional Review Board) approved banking study "Tissue and Blood Acquisition for Genomic Analysis and Collection of Health Information from Patients with Thoracic Malignancies, Suspected Thoracic Malignancies, or Mesothelioma".

If carried out successfully, the proposed strategy very likely will lead to a larger and adequately powered study (perhaps using whole genome sequencing) to understand fully evolving molecular changes due to clonal selection under treatment pressure. The pace of progress in the field of sequencing technology currently underway is only likely to accelerate in the near future yielding richer and highly content-rich information. Moreover, it is likely that genomic information from DNA sequencing and transcriptome will be supplemented by analyses of translatomes and proteomes.

Successful completion of the proposed study would enable future studies to fully harness the potential of emerging technologies to develop novel approaches to treat and even ideally prevent resistance to EGFR TKIs (tyrosine-kinase inhibitor) and other molecularly targeted therapies. This could serve as a template for other cancer types as well. Over time, this approach, broadly used, would create simultaneously, highly valuable annotated tumor specimens along with germ line DNA for high-throughput genomic studies to identify novel targets and their impact on the course of disease. Re-analyzing molecular changes in the tumor at the time of disease progression would likely be a new standard of care to guide salvage therapy.

• Study Type: Observational
• Enrollment (Actual): 6

Contacts and Locations

Study Locations

• United States
  • Missouri
    • Saint Louis, Missouri, United States, 63110
      • Washington University School of Medicine

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

Participants will be selected from the Washington University School of Medicine and Barnes-Jewish healthcare system who previously consented to study HRPO (Human Research Protection Office)# 201305031 ("Tissue and Blood Acquisition for Genomic Analysis and Collection of Health Information from Patients with Thoracic Malignancies, Suspected Thoracic Malignancies, or Mesothelioma").

Description

Inclusion Criteria/Exclusion Criteria:

• Diagnosis of metastatic stage IIIB/IV lung adenocarcinoma
• Presence of known sensitizing mutations in EGFR TK domain (exon 19 deletion and L858R)
• Absence of known resistant mutations in the EGFR TK domain (T790M)
• Consented to HRPO # 201305031 ("Tissue and Blood Acquisition for Genomic Analysis and Collection of Health Information from Patients with Thoracic Malignancies, Suspected Thoracic Malignancies, or Mesothelioma")
• No prior treatment for this malignancy
• No prior localized therapy to the biopsy site
• Planned treatment with standard of care afatinib at 40 mg QD (daily)
• Not pregnant or breastfeeding
• At least 18 years of age

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Genetic changes associated with disease progression following treatment with afatinib	The investigators will compare tumor sequencing prior to afatinib treatment to the time of disease progression to see if the genetic sequencing changed between pre-treatment and progression.; The investigators plan to conduct exome and transcriptome sequencing of tumor before therapy with afatinib and at the time of relapse. In addition, exome sequencing of peripheral blood DNA will be done (for germline). Given the complexities of genomic analyses of paired samples in the face of limited data, the investigators will not be able to do any formal power calculations in this feasibility study.; Disease progression is at least a 20% increase in the sum of the diameters of target lesions, taking as reference the smallest sum on study or appearance of one or more new lesions and/or unequivocal progression of existing non-target lesions.	Estimated to be 1 year

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Types of mutations in signaling kinases associated with therapeutic response	Investigators will look at tumor tissue associated with a therapeutic response and compare with tumor tissue associated with disease progression and see if there are any mutation differences.; Therapeutic ResponseComplete response is disappearance of all target lesions and non-target lesions.Partial Response is at least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters.	Estimated to be 1 year
Allelic ratio of wild type to mutant EGFR (roughly corrected for intrinsic differences in tumor cellularity) with duration of response	A variant is considered to have mutant biased expression if the variant is expressed and the variant allele frequency is greater than 20% higher in the RNA-seq data compared to the exome sequencing data. A variant is considered to have wild type biased expression if the gene is expressed, the region of the variant is covered at 5X or greater depth, and the VAF is at least 20% lower in the RNA-seq data compared to the exome sequencing data.; Duration of response is the duration of overall response is measured from the time measurement criteria are met for complete response or partial response (whichever is first recorded) until the first date that recurrent or progressive disease is objectively documented (taking as reference for progressive disease the smallest measurements recorded since the treatment started).	Estimated to be 1 year

Collaborators and Investigators

• Sponsor: Washington University School of Medicine
• Collaborators: Boehringer Ingelheim

Publications and helpful links

Helpful Links

• Alvin J. Siteman Cancer Center at Barnes-Jewish Hospital and Washington University School of Medicine

Study record dates

Study Major Dates

• Study Start (Actual): June 11, 2015
• Primary Completion (Actual): February 28, 2018
• Study Completion (Actual): February 28, 2018

Study Registration Dates

• First Submitted: June 15, 2015
• First Submitted That Met QC Criteria: July 2, 2015
• First Posted (Estimate): July 8, 2015

Study Record Updates

• Last Update Posted (Actual): March 5, 2018
• Last Update Submitted That Met QC Criteria: March 1, 2018
• Last Verified: March 1, 2018

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Respiratory Tract Diseases; Neoplasms; Lung Diseases; Neoplasms by Site; Respiratory Tract Neoplasms; Thoracic Neoplasms; Carcinoma, Bronchogenic; Bronchial Neoplasms; Lung Neoplasms; Carcinoma, Non-Small-Cell Lung
• Other Study ID Numbers: 201408008

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No