Therapeutic Response Evaluation by CTC Expansion System

Evaluate the Therapeutic Response by Using in Vitro Circulating Tumor Cell Expansion System

Among biomarkers, CTCs are a convenient, sensitive and biologically informative option. CTC detection could be considered a real-time "liquid biopsy" approach and contains several advantages such as minimally invasive, easy and safe to perform, and multiple samples can be taken over time, better prognosis to indicate an elevated risk of metastases, improved therapy monitoring, providing live disease status information., However, the number of CTCs is very low, so the establishment of cell culture from CTCs becomes the most challenging over the past year. In this study, we develop a short-term CTC expansion protocol combined with a new surface coating technique. Expanded circulating tumor cells will provide genetic information and develop oncology drug screening platform, which provides an opportunity to monitor response to therapy noninvasively.

Study Overview

• Status: Enrolling by invitation
• Conditions: Circulating Tumor Cells

Detailed Description

CTC detection could be considered a real-time "liquid biopsy" approach and contains several advantages such as minimally invasive, easy and safe to perform, and multiple samples can be taken over time, better prognosis to indicate an elevated risk of metastases, improved therapy monitoring, providing live disease status information., However, the number of CTCs is very low so the establishment of cell culture from CTCs becomes the most challenging over the past year. In this proposal we will develop a short-term CTC expansion protocol through combine with a new type of surface coating technique. Expanded circulating tumor cells will provide genetic information and develop oncology drug screening platform which provide an opportunity to noninvasively monitor response to therapy.

• Study Type: Observational
• Enrollment (Anticipated): 500

Contacts and Locations

Study Locations

• Taiwan
  • Taipei, Taiwan
    • Taipei Medical University Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: No older than 80 years (Child, Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

Patients with advanced or metastatic solid tumors were enrolled. Eligible patients were ≥ 20 years old and had a life expectancy of more than 3 months.

Description

Inclusion Criteria:

• Patients with malignant tumors

Exclusion Criteria:

• Unsuitable for recruitment by clinical judgement or non-compliance with regular follow-up.

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
To correlate drug sensitivity profiles of the expanded circulating tumor cells with the clinical treatment response.	CTC was expanded in vitro culture system and drug sensitivity profile to disease-specific panels was obtained. Clinical treatment response and drug sensitivity profile were analysed with 2 by 2 contingency tables. The evaluation of clinical response rate used by Response Evaluation Criteria in Solid Tumours (RECIST) version 1.1. Briefly, C+ refers to patients with clinical disease control (complete response, partial response, and stable disease), and C- refers to patients were found with worsening diseases (PD). Patients that did not fit into either category were listed as non-evaluable. The drug sensitivity profiles were categorized into E+ and E-. In class E+, at least one chemical in the evaluable treatment regimen was found to kill more than 30% of the cells in the CTC culture system. In class E-, all chemicals in the evaluable treatment regimen were found to kill less than 30% of the cells in the CTC culture system.	CTC was expanded in vitro and drug sensitivity profile to disease-specific panels was obtained. The patient continued with the planned treatment by the treating physician and follow up information was obtained 3 months after blood sampling.

Collaborators and Investigators

• Sponsor: Taipei Medical University Hospital
• Investigators: Study Director: Long-Sheng Lu, MD, Ph.D., Taipei Medical University Hospital; Study Chair: Jeng-Fong Chiou, MD, Ph.D., Taipei Medical University Hospital

Publications and helpful links

General Publications

• Pantel K, Brakenhoff RH, Brandt B. Detection, clinical relevance and specific biological properties of disseminating tumour cells. Nat Rev Cancer. 2008 May;8(5):329-40. doi: 10.1038/nrc2375.
• Muller V, Riethdorf S, Rack B, Janni W, Fasching PA, Solomayer E, Aktas B, Kasimir-Bauer S, Pantel K, Fehm T; DETECT study group. Prognostic impact of circulating tumor cells assessed with the CellSearch System and AdnaTest Breast in metastatic breast cancer patients: the DETECT study. Breast Cancer Res. 2012 Aug 15;14(4):R118. doi: 10.1186/bcr3243.

Study record dates

Study Major Dates

• Study Start (Actual): August 8, 2018
• Primary Completion (Actual): August 7, 2019
• Study Completion (Anticipated): August 7, 2023

Study Registration Dates

• First Submitted: July 12, 2021
• First Submitted That Met QC Criteria: July 12, 2021
• First Posted (Actual): July 22, 2021

Study Record Updates

• Last Update Posted (Actual): October 31, 2022
• Last Update Submitted That Met QC Criteria: October 27, 2022
• Last Verified: October 1, 2022

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pathologic Processes; Neoplasms; Neoplastic Processes; Neoplasm Metastasis; Neoplastic Cells, Circulating
• Other Study ID Numbers: N201803020

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