Abscopal Effect for Metastatic Colorectal Cancer

Colorectal Cancer Clinical Trial

Official title:

A Phase II Study of Radiotherapy and ZADAXIN's® (Thymalfasin) Induced Abscopal Effect in Patients With Heavily Pretreated, Metastatic Colorectal Cancer

Clinical Trial Details — Status: Withdrawn

Administrative data

• NCT number: NCT02535988
• Other study ID #: ZhejiangPPH
• Status: Withdrawn
• Phase: Phase 2
• Start date: September 2015
• Est. completion date: December 2017

Study information

• Verified date: September 2023
• Source: Zhejiang Provincial People's Hospital
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Patients with colorectal cancer that had metastatic lesions after been treated with definitive surgery or chemoradiotherapy are being asked to participate in this study.

1. To observe immunity-mediated tumor response outside the radiation field (abscopal effect) after chemoradiotherapy of a metastatic site in metastatic colorectal cancer patients.

2. To induce the efficacy (effectiveness) of a new combination of therapy, chemoradiotherapy and thymalfasin for heavily pretreated, metastatic esophageal cancer patients;

3. To explore the role of PET/CT scanning to assess tumor response/abscopal effect.

This study will help find out what abscopal effects (good or bad) the combination of radiotherapy and thymalfasin has on metastatic esophageal cancer.

Description:

1. To observe immunity-mediated tumor response outside the radiation field (abscopal effect) after chemoradiotherapy of a metastatic site in metastatic colorectal cancer patients.

2. To induce the efficacy (effectiveness) of a new combination of therapy, chemoradiotherapy and thymalfasin for heavily pretreated, metastatic esophageal cancer patients

3. To explore the role of PET/CT scanning to assess tumor responses/abscopal effect.

Eligible are patients with metastatic colorectal cancer who have achieved stable disease or have disease progression after systemic therapy (surgery or definitive chemoradiotherapy) and have at least three separate measurable sites of metastatic lesions. Extent of metastatic disease is recorded both at CT and PET/CT scanning. Radiation is given during combined therapy to one of the lesions, 35Gy in 10 fractions over a two week interval, conformally to maximally spare normal tissue or organ. Thymalfasin treatment is given twice a week with an interval of 3-4 days each week. At day 22 radiation is re-started and the same radiation dose is delivered to a second metastatic site, again with thymalfasin. Abscopal response is evaluated by assessing clinical and PET/CT response in the non-irradiated measurable metastatic sites. A Phase II clinical trial based on an optimum two-stage Phase II Simon design is used to conduct this pilot study. Ten patients will be treated in Stage one; if there are no abscopal responses, the trial will be terminated. If there are one or more abscopal responses in Stage One, the trial will proceed to enroll an additional 19 patients.

Recruitment information / eligibility

• Status: Withdrawn
• Enrollment: 0
• Est. completion date: December 2017
• Est. primary completion date: January 2017
• Accepts healthy volunteers: No
• Gender: All
• Age group: 19 Years and older

Eligibility

Inclusion Criteria:

1. Patients with histologically confirmed colorectal cancer which is persistent and metastatic or recurrent and metastatic;

2. Patients must have at least 3 distinct measurable metastatic sites at least 1 cm of larger in their largest diameter;

3. Age =18 years;

4. Metastatic disease measurable on a CT/MRI scan. The primary tumor is not considered measurable disease. Metastatic lesions within a prior radiation field are acceptable as long as disease has progressed in the radiation field by RECIST criteria. The same imaging modality performed at baseline (CT or MRI) will be repeated at subsequent imaging.

5. ECOG performance status: 0-1;

6. Life expectancy = 3 months.

7. Patients have adequate baseline organ and marrow function as defined by an absolute neutrophil count greater than 1500 cells per µL, platelet concentration of greater than 50 000 per µL, total bilirubin less than 1•5 times the upper limit of normal (ULN), aspartate aminotransferase and alanine aminotransferase less than 2•5 times the ULN, and serum creatinine less than 1•5 times the ULN;

8. Signed consent forms voluntarily;

Exclusion Criteria:

1. Patients who have had prior allergic reaction to Apatinib;

2. Patients undergoing therapy with other investigational agents.

3. Women who are pregnant or breastfeeding;

4. Patients with known brain metastases can be included in this clinical trial but brain lesions are not eligible as target or non target lesion;

5. Anticipated patient survival under 3 months;

6. Active severe infection or known chronic infection with HIV, hepatitis B virus, or hepatitis C virus;

7. Cardiovascular disease problems including unstable angina, therapy for life-threatening ventricular arrhythmia, myocardial infarction, stroke or congestive heart failure within the last 6 months;

8. The subject has had another active malignancy within the past five years except for cervical cancer in site, in situ carcinoma of the bladder or non-melanoma carcinoma of the skin;

9. Clinically significant and uncontrolled major medical conditions including but not limited to: active uncontrolled infection, symptomatic congestive heart failure, Unstable angina pectoris or cardiac arrhythmia, psychiatric illness/ social situation that would limit compliance with study requirements; any medical condition, which in the opinion of the study investigator places the subject at an unacceptably high risk for toxicities;

10. Patients with any other concurrent disease which, in the judgment of the investigator, would make the patient inappropriate for participation in the study.

Related Conditions & MeSH terms

• Colorectal Cancer
• Colorectal Neoplasms
• Metastatic Colorectal Cancer
• Thymalfasin

Intervention

Radiation:
• Radiation therapy
3.5Gy per fraction to a total dose of 35Gy/10 fractions over 2 weeks with concurrent thymalfasin for metastatic lesions of colorectal cancer.

Drug:
• Thymalfasin
Patients with metastatic lesions of colorectal cancer receiving 3.5Gy per fraction to a total dose of 35Gy/10 fractions over 2 weeks with concurrent thymalfasin ( given twice a week with an interval of 3-4 days each week).

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
Zhejiang Provincial People's Hospital

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	The proportion of patients with an abscopal response assessed at 7-8 weeks after the initiation of treatment.		week 7- week 8
Secondary	The number of participants with adverse events from the date of enrollment until 2 years from the opening of the study.		year 0- year 2
Secondary	The proportion of patients alive with abscopal responses from the date of enrollment until date of death from any cause, assessed up to 2 years from the opening of the study.		year 0- year 2