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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT06262386
Other study ID # 202202172B0
Secondary ID
Status Recruiting
Phase N/A
First received
Last updated
Start date August 1, 2023
Est. completion date July 31, 2028

Study information

Verified date August 2023
Source Chang Gung Memorial Hospital
Contact Ching-Yang Wu
Phone +886975368204
Email wu.chingyang@gmail.com
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

For patients with lung cancer who have undergone tumor resection, early relapse significantly impacts survival. However, there are currently no reliable screening or imaging tools available to identify patients at risk of early relapse. To address this clinical challenge, many studies have focused on understanding the clinicopathologic characteristics associated with an increased risk of early relapse. Despite these efforts, we can identify patients at risk but cannot pinpoint which individuals will actually experience early relapse. Studies on adjuvant therapy have shown improved survival in cases of more advanced disease but have not demonstrated a reduction in early relapse rates. In our preliminary analysis of previous study data, we observed that patients with a smaller reduction in circulating tumor cells (CTCs) within the first three days after surgery, followed by an increase on the third-day post-operation, are more likely to experience early relapse during regular monitoring. This pattern may be indicative of minimal residual disease. By combining trends in circulating tumor cell variations with pathologic characteristics, we aim to select patients for adjuvant therapy who are at high risk of developing early relapse. The objective of our study is to employ screening based on circulating tumor cell dynamics and pathologic features to identify patients likely to experience early relapse and to assess the effectiveness of adjuvant therapy in these cases.


Description:

For patients with resectable lung cancer, anatomic resection alongside mediastinal lymph node dissection is pivotal in removing all tumor tissue visible on imaging from the patient's body. Despite these efforts, early relapse remains a significant issue. Literature review shows that the early relapse rate varies between 8 to 10%, potentially due to undetectable occult metastasis by imaging modalities, suggesting the presence of minimal residual disease or tumor cells evading the primary site. Limitations in imaging, such as the slice thickness in computed tomography (CT) scans, which range from 0.375 to 0.5 centimeters, can render tumors smaller than the slice thickness invisible. Similarly, tumors smaller than 0.5 cm may not accumulate sufficient F18-Deoxyglucose to be detectable in positron emission tomography (PET) scans. Additionally, tumor cells may migrate to extrapulmonary sites via lymphatic drainage or circulation. Survival studies have predominantly focused on the pathologic TNM stage, which aggregates different disease presentations with similar survival outcomes. However, the heterogeneity inherent in pathology may help in identifying patients prone to relapse. From a tumor biology perspective, tumor cells may detach from surrounding tissues, becoming more invasive and entering the bloodstream. Circulating tumor cells (CTCs) have been recognized early in cancer stages and are correlated with treatment response, tumor genetic alterations, and survival. Research has combined CT tumor size and CTCs in a malignancy prediction model for suspicious pulmonary lesions, highlighting that CTCs can rebound in patients experiencing early relapse, indicating occult metastases or minimal residual disease. Systemic adjuvant therapy is considered the best approach to minimize disease relapse in resectable lung cancer patients. Although many studies have sought to identify patients at risk of relapse to improve survival, the presence of intrapulmonary (N1) or mediastinal (N2) lymph node invasion significantly affects survival in non-small cell lung cancer patients. Even tumors smaller than 1 cm carry a risk of lymph node metastases, with respective risks for cT1a, cT1b, and cT1c tumors reported as 3.8%, 16.3%, and 19.6%. Therefore, patients with tumors larger than 1 cm are recommended adjuvant therapy due to the high risk of lymph node involvement. Adjuvant chemotherapy is advised for patients with stages 1b to 3a, showing a 5.4% survival benefit by the fifth postoperative year, although this benefit diminishes in subsequent years. This could be due to adjuvant therapy being administered based on the pathologic stage rather than the likelihood of relapse. Tumor heterogeneity might also influence the response to different therapeutic regimens. Molecular profiling of tumors has identified mutations predicting responses to targeted therapies and elucidated drug resistance mechanisms, offering more precise treatments and improving survival. Targeted and immune therapies have shown improved survival in specific tumor subgroups. This study aims to utilize trends in CTC variations as a screening tool to identify patients at risk of relapse and prescribe adjuvant therapy to evaluate the therapeutic efficacy and survival impact of CTCs.


Recruitment information / eligibility

Status Recruiting
Enrollment 358
Est. completion date July 31, 2028
Est. primary completion date July 31, 2028
Accepts healthy volunteers No
Gender All
Age group 20 Years to 90 Years
Eligibility Inclusion Criteria: 1. Patients who presented with resectable disease ( Clinical stage 1a to 3a) 2. Patients who received tumor resection Exclusion Criteria: 1. Pathologic stage greater than stage 3b or 4 2. Pathologic stage less than stage 1a1 3. Could not complete treatment course 4. Could not receive blood sampling for CTC (circulating tumor cell) or regular surveillance

Study Design


Related Conditions & MeSH terms


Intervention

Drug:
Cisplatin based chemottherapy
adjuvant therapy for high risk patient

Locations

Country Name City State
Taiwan Ching-Yang Wu Taoyuan City

Sponsors (2)

Lead Sponsor Collaborator
Chang Gung Memorial Hospital National Science and Technology Council

Country where clinical trial is conducted

Taiwan, 

References & Publications (35)

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Fu JY, Wan YL, Huang TY, Wu CF, Liu YH, Hsieh MJ, Wu YC, Wu CY. Correction: Correlation between image characteristics and pathologic findings in non small cell lung cancer patients after anatomic resection. PLoS One. 2019 Feb 12;14(2):e0212461. doi: 10.13 — View Citation

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Wu CF, Wu CY, Fu JY, Wang CW, Liu YH, Hsieh MJ, Wu YC. Prognostic value of metastatic N1 lymph node ratio and angiolymphatic invasion in patients with pathologic stage IIA non-small cell lung cancer. Medicine (Baltimore). 2014 Oct;93(20):e102. doi: 10.109 — View Citation

Wu CY, Fu JY, Wu CF, Liu YH, Hsieh MJ, Wu YC, Yang CT, Tsai YH. Pathologic Stage of Nonsmall Cell Lung Cancer Patients Presenting as Resectable Cases After Neoadjuvant Therapy Did Not Predict the Prognosis. Medicine (Baltimore). 2015 Oct;94(40):1. doi: 10 — View Citation

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Wu YL, Tsuboi M, He J, John T, Grohe C, Majem M, Goldman JW, Laktionov K, Kim SW, Kato T, Vu HV, Lu S, Lee KY, Akewanlop C, Yu CJ, de Marinis F, Bonanno L, Domine M, Shepherd FA, Zeng L, Hodge R, Atasoy A, Rukazenkov Y, Herbst RS; ADAURA Investigators. Os — View Citation

* Note: There are 35 references in allClick here to view all references

Outcome

Type Measure Description Time frame Safety issue
Primary Accuracy of proposed relapse prediction model Utilized the enrolled patients to testify proposed relapse prediction model
Calculated Positive prediction rate, Negative prediction rate, accuracy
Goal: high positive prediction rate, lower negative prediction rate, high accuracy
follow up in 3 month-interval
Primary early relapse rate adjuvant therapy based on proposed relapse prediction model
calculate the early relapse rate (relapse within 3 years)
utilized historical cohort as historical control (cohort that utilized to establish proposed relapse prediction model
adjuvant therapy based on TNM stage
calculate the early relapse rate (relapse within 3 years)
follow up Chest CT/ CTC in 3-month interval
follow up in 3 month-interval
Secondary Overall surveival Goal: difference of overall survival among patients with relapse risk
treatment based on proposed relapse prediction model
calculate the overall survival
utilized historical cohort as historical control ( cohort that utilized to establish proposed relapse prediction model
treatment based on TNM stage
calculate the overall survival rate
follow up in 3 month-interval
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