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Phase 2 Study of Thermodox as Adjuvant Therapy With Thermal Ablation (RFA) in Treatment of Metastatic Colorectal Cancer(mCRC)

Phase II Open Label Trial of Thermal Ablation and Lyso-Thermosensitive Liposomal Doxorubicin (Thermodox) for Metastatic Colorectal Cancer (mCRC) Liver Lesions

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01464593
Acronym
ABLATE
Enrollment
2
Registered
2011-11-03
Start date
2011-09-30
Completion date
2013-06-30
Last updated
2022-10-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Colon Cancer Liver Metastasis

Keywords

Colorectal Liver Metastasis, Colon Cancer, Liver Cancer, Liver Metastasis, Liver metastases

Brief summary

The purpose of this study is to determine the safety and efficacy of Thermodox, a thermally sensitive liposomal doxorubicin, in combination with thermal ablation in the treatment of hepatic colorectal liver metastases (CRLM).

Detailed description

This is an open label phase II trial to evaluate the safety, feasibility, and efficacy of ThermoDox in combination wtih thermal ablation for the regional hepatic treatment of mCRC liver lesions. Eligible colorectal cancer patients will unresectable liver metastases and be candidate for either radiofrequency ablation (RFA) or microwave ablation (MWA). All unresectable lesions must be targeted for ablation in in nor more than 2 thermal ablation/ThermoDox procedures. Approximately 24 hours prior to treatment with ThermoDox, patients will start a regimen of prophylaxis (detailed in the Study Drug section below) against immediate hypersensitivity reactions. Treatment will begin with a 50 mg/m2 ThermoDox infusion administered intravenously (IV) over 30 minutes. Thermal Ablation will be initiated a minimum of 15 minutes after start of the infusion and should be completed no later than 3 hours after starting the infusion. Subjects will have follow up visits on Day 14 and at months 1, 4, 7, 10,13, 16, 19, 22, and 25 (+ 7 days) or until study discontinuation. At baseline and at each post-treatment clinic visit, patients will self-report their quality of life (QoL) using the 8-item FACT-Hepatobiliary Symptom Index (FHSI-8). Contrast CT imaging studies or Magnetic Resonance Imaging (MRI)will be used to assess the effectiveness of therapy. CT or MRI scans will be obtained at baseline and at months 1, 4, 7, 10, 13, 16, 19, 22, and 25(+ 7 days)until local recurrence is seen, the subject has discontinued, or 2 years of follow-up have elapsed, whichever occurs first. All protocol-specified CT/MRI images will be centrally read by an independent radiology assessor. Subjects will be followed for each efficacy endpoint local tumor control through 2 years after treatment. Secondary endpoints including Overall Survival, Time to Local Recurrence, PRO deterioration) will be evaluated until the event occurs, the subject is discontinued, or until 3 years following treatment.

Interventions

Thermally sensitive liposomal doxorubicin 50 mg/m2 single 30 minute intravenous infusion.

Single 30 minute intravenous infusion

ThermoDox is a Lyso-thermosensitive Liposomal Doxorubicin designed to be used in conjunction with thermal ablation.

Sponsors

Imunon
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Pathologic diagnosis of colorectal cancer. 2. A minimum of 1 unresectable mCRC liver lesion at baseline clinically indicated for radiofrequency ablation (RFA) or microwave ablation (MWA). * Recurrent lesions may have been treated previously by resection or ablation. * Anticipated ablation volume will be no larger than either removal of 3 hepatic segments or removal of more than 30% of total liver volume (as per maximum surgical limit). * Patients may have resectable lesions that are treated surgically. * If additional lesions are discovered during the ablation treatment procedure that were undetectable at screening will be treated at the discretion of the physician and guided by local standard of care. * Confirm the lesions are malignant by a pretreatment biopsy or by a biopsy obtained during the ablation procedure. 3. Subjects with suspected or limited extra-hepatic mCRC are eligible provided thermal ablation is clinically indicated. Chemotherapy is not permitted within 5 half-lives or 30 days if shorter prior to initial study treatment through 30 days following final study treatment. 4. Male or female 18 years of age or older. 5. Are willing to sign an informed consent form. 6. Left Ventricular Ejection Fraction(LVEF) ≥ 50% 7. Willing to return to the study site for study visits. 8. Have ECOG performance status ≤ 2 and life expectancy of ≥ 6 months.

Exclusion criteria

1. Concomitant bowel surgery and/or synchronous colon resection. 2. Have serious illnesses including, but not limited to, congestive heart failure;life threatening cardiac arrhythmia; or myocardial infarction or cerebral vascular accident within the last 6 months. 3. Have previously received any doxorubicin (study subjects being considered for completion of treatment may have received ThermoDox previously). 4. Are pregnant or breast-feeding. In women of childbearing potential, a negative pregnancy test (serum) is required within 14 days prior to study treatment. 5. Women and men of childbearing potential who are not practicing an acceptable form of birth control (i.e. diaphragm, cervical cap, condom, surgical sterility or birth control pills. 6. Have any known allergic reactions to any of the drugs or liposomal components or intravenous imaging agents to be used in this study. 7. Have portal or hepatic vein tumor invasion/thrombosis. 8. Have INR \> 1.5 times the institution's upper normal limit (UNL), except in subjects who are therapeutically anticoagulated for medical conditions unrelated to CRLM such as atrial fibrillation. Subjects may be re-screened after condition is treated or anticoagulant is withheld. 9. Have platelet count \< 75,000/mm3, absolute neutrophil count \< 1500/mm3, or Hgb \< 10.0 g/dL (unless the hemoglobin value has been stable, the subject is cardiovascularly stable, asymptomatic, and judged able to withstand the RFA procedure). 10. Have serum creatinine ≥ 2.5 mg/dL or calculated creatinine clearance (CrCl) ≤ 25.0 mL/min. 11. Have serum bilirubin \> 3.0 mg/dL. 12. Have serum albumin \< 2.8 g/dL. 13. Have body temperature \> 38.3°C immediately prior to study treatment. 14. Have contraindications to receiving doxorubicin HCl. 15. Are being treated with other investigational agents or use of an investigational agent within 5 half-lives or 30 days whichever is longer preceding the first dose of study medication. 16. Use of chemotherapy within 5 half-lives or 30 days, whichever is shorter, preceding the first dose of study medication and no chemotherapy planned for 30 days after ablation(s). 17. Have concurrent malignancy other than mCRC (subjects wtih treated squamous cell carcinoma of the skin or basal cell carcinoma of the skin maybe included) or ongoing medically significant active infection. 18. Documented HIV positive. 19. NYHA class III or IV functional classification for heart failure. 20. Evidence of hemochromatosis. 21. Have history of contrast induced nephropathy and unable to undergo MRI. 22. Have a history of Nephrogenic Systemic Fibrosis (NSF).

Design outcomes

Primary

MeasureTime frameDescription
Determine the Local Tumor Control at 1 Year Post Randomization1 yearSubject's treated with thermal ablation in conjunction with Thermodox to evaluate local tumor control defined as complete ablation and does not experience recurrence within 1 cm of the ablation site.

Secondary

MeasureTime frameDescription
Evaluation of Safety1 monthAdverse events will be assessed through 1 month following study treatment(s). AE's after 1 month through the Month 25 assessment are reported if possibly, probably, or definitely related to study drug. Safety data will include physical exams, vital signs, ECGs, Echocardiograms/MUGA Scans, hematology, clinical chemistry and urinalysis.
Time to Local Recurrence2 yearsMeasured as the time to local recurrence after ablation as measured from the date of randomization.
Overall Survival3 yearsMeasured as time from randomization to death or the end of the study at month 37.

Countries

United States

Participant flow

Participants by arm

ArmCount
Thermodox
Thermodox 50 mg/m2 intravenous infusion over 30 minutes starting 15 minutes before thermal ablation. Lyso-Thermosensitive Liposomal Doxorubicin: Thermally sensitive liposomal doxorubicin 50 mg/m2 single 30 minute intravenous infusion. 5% Dextrose Solution: Single 30 minute intravenous infusion ThermoDox: ThermoDox is a Lyso-thermosensitive Liposomal Doxorubicin designed to be used in conjunction with thermal ablation.
1
Total1

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyStudy terminated early due to lack of enrollment1

Baseline characteristics

CharacteristicThermodox
Age, Continuous41 years
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
1 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
1 Participants
Region of Enrollment
United States
1 participants
Sex: Female, Male
Female
0 Participants
Sex: Female, Male
Male
1 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 1
other
Total, other adverse events
0 / 1
serious
Total, serious adverse events
0 / 1

Outcome results

Primary

Determine the Local Tumor Control at 1 Year Post Randomization

Subject's treated with thermal ablation in conjunction with Thermodox to evaluate local tumor control defined as complete ablation and does not experience recurrence within 1 cm of the ablation site.

Time frame: 1 year

Population: Study terminated early due to lack of enrollment and data were not collected

Secondary

Evaluation of Safety

Adverse events will be assessed through 1 month following study treatment(s). AE's after 1 month through the Month 25 assessment are reported if possibly, probably, or definitely related to study drug. Safety data will include physical exams, vital signs, ECGs, Echocardiograms/MUGA Scans, hematology, clinical chemistry and urinalysis.

Time frame: 1 month

Population: Study terminated early due to lack of enrollment and data were not collected

Secondary

Overall Survival

Measured as time from randomization to death or the end of the study at month 37.

Time frame: 3 years

Population: Study terminated early due to lack of enrollment and data were not collected

Secondary

Time to Local Recurrence

Measured as the time to local recurrence after ablation as measured from the date of randomization.

Time frame: 2 years

Population: Study terminated early due to lack of enrollment and data were not collected

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026