A Phase 3 interventional study of ThermoDox and 5% Dextrose Solution in Hepatocellular Carcinoma, sponsored by Imunon. Completed at 79 sites in 11 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-05-03.
Sponsored by Imunon · Phase 3, Interventional, and Treatment
The purpose of this study is to determine whether ThermoDox, a thermally sensitive liposomal doxorubicin, is effective in the treatment of non-resectable hepatocellular carcinoma when used in conjunction with radiofrequency ablation (RFA).
This will be a Phase III, randomized, double-blinded, dummy-controlled, efficacy, and safety study of ThermoDox plus RFA versus RFA plus dummy infusion.
The 50 mg/m2 ThermoDox or dummy infusion will be administered IV over 30 minutes. As part of blinded pre-medication ThermoDox treated subjects will receive 20 mg of dexamethasone orally 48 hours prior to the drug infusion for infusion reaction prophylaxis. Subjects on the control arm will receive a matching dummy pre-medication pill orally at 48 hours prior to infusion of the study treatment. Thirty minutes prior to receiving the ThermoDox infusion, subjects will receive a blinded dose of 20 mg of IV dexamethasone, 50 mg IV diphenhydramine and either 50 mg of IV ranitidine or 20 mg of IV famotidine. Subjects on the control arm will receive a masked dummy pre-medication pill orally at 48 hours prior to infusion of the study medication, and a dummy infusion 30 minutes prior to dummy infusion of D5W (250 cc of 5% Dextrose solution). RFA will be initiated approximately at a minimum of 15 minutes after the initiation of study drug infusion and should be completed no later than 3 hours after study drug infusion initiation. The total length of the RFA procedure is proportional to the size of the tumor(s) involved and is anticipated to range from 12 to 60 minutes for each lesion with an estimated overall procedure time of less than 3 hours.
Subjects with incomplete ablations will be re-treated to complete the ablation according to the treatment assigned at randomization. The completion of an ablation in this manner will restart the timeline of the study-related visits/procedures. This repeated ablation procedure cannot occur earlier than 21 days post-ablation but no later than 14 days after the first post-ablation CT scan assessment. These subjects will start over at screening (see Table 1). If a complete ablation is not achieved after these two study treatments, the subject will be considered a treatment failure and the patient will be discontinued and followed for survival only.
Subjects who recur with local and/or distant intrahepatic HCC after a complete initial ablation will have met the primary endpoint of progression-free survival. However, if these subjects have lesions that are amenable to RFA the standard of care is to consider them for repeat RFA. Therefore, these subjects may receive treatment to which they were randomized if they continue to meet the inclusion and exclusion criteria of the protocol. Subjects who develop any extrahepatic lesion will have met the primary endpoint and will be discontinued from study treatment but will still be followed for overall survival.
Dynamic Contrast CT imaging will be used to assess the effectiveness of the ablation therapy. The blind will be maintained at the level of CT scan reads. All protocol-specified CT images will be centrally read and assessed by the endpoint committee in a blinded fashion. Posttreatment CT scans will be obtained at months 1, 3, 5, 7, 9 and 12 and every three months thereafter until withdrawal. Adverse event assessments and laboratory examinations will occur at each visit. All subjects will be monitored throughout the investigational period.
Patients that meet inclusion/exclusion criteria may be at risk for contrast-induced nephropathy (CIN) when undergoing the required CT with contrast procedures. The investigators must be mindful of the risk factors (e.g. diabetes, borderline renal function) associated with CIN and employ strategies to reduce the risk of CIN. In subjects with diabetes or borderline renal function (creatinine greater than 1.5 mg/dL) special precautions (e.g. hydration, contrast dose reduction, follow up creatinine determination) should be employed. An accepted procedure is adequate intravenous volume expansion with isotonic saline (1.0 - 1.5 mL/kg per hour) for 3-12 hours before the procedure and continued for 6-24 hours.
All randomized subjects will be followed for safety and overall survival.
Be an appropriate candidate for receiving RFA as a medically indicated treatment as evaluated by the following factors:
Exclusion Criteria:
ThermoDox 50 mg/m2 start infusion over 30 minutes about 15 minutes before radiofrequency ablation begins.
Drug: ThermoDox
Sham infusion over 30 minutes about 15 minutes before radiofrequency ablation begins.
Drug: 5% Dextrose Solution
Thermally Sensitive Liposomal Doxorubicin 50 mg/m2 Single 30 minute intravenous infusion
Single 30 minute intravenous infusion
Progression Free Survival Will be Measured From the Date of Randomization to the First Date on Which One of the Following Occurs. o Local Recurrence o Any New Distant Intrahepatic HCC Tumor o Any New Extrahepatic HCC Tumor o Death From Any Cause
Time frame: 3 years
Overall Survival as Measured by Time From Randomization to Death or the End of the Study.
Time frame: 3 years
Number of Participants With Definite Worsening as Per Patient-Reported Outcomes
Number of participants with significant symptom deterioration, defined as greater than or equal to 4-point increase from baseline in the eight-item Functional Assessment of Cancer Therapy-Hepatobiliary Symptom Index.
Time frame: 3 years
Number of Participants With Local Recurrence
Number of participants with local progression in the intent-to-treat (ITT) population.
Time frame: 3 years
Evaluation of Safety
Time frame: 3 years
| Milestone | ThermoDox + RFA | Sham + RFA |
|---|---|---|
| Started | 354 | 347 |
| Completed | 244 | 245 |
| Not completed | 110 | 102 |
| Time to Progression (months) | ThermoDox + RFA | Sham + RFA |
|---|---|---|
| Progression Free Survival Will be Measured From the Date of Randomization to the First Date on Which One of the Following Occurs. o Local Recurrence o Any New Distant Intrahepatic HCC Tumor o Any New Extrahepatic HCC Tumor o Death From Any Cause | 13.97 (11.47 to 19.26) | 13.87 (11.14 to 16.69) |
| Participants (Deaths) | ThermoDox + RFA | Sham + RFA |
|---|---|---|
| Overall Survival as Measured by Time From Randomization to Death or the End of the Study. | 189 | 188 |
Number of participants with significant symptom deterioration, defined as greater than or equal to 4-point increase from baseline in the eight-item Functional Assessment of Cancer Therapy-Hepatobiliary Symptom Index.
| participants | ThermoDox + RFA | Sham + RFA |
|---|---|---|
| Number of Participants With Definite Worsening as Per Patient-Reported Outcomes | 53 | 60 |
Number of participants with local progression in the intent-to-treat (ITT) population.
| participants | ThermoDox + RFA | Sham + RFA |
|---|---|---|
| Number of Participants With Local Recurrence | 58 | 55 |
| percentage of overall incidence | ThermoDox + RFA | Sham + RFA |
|---|---|---|
| Evaluation of Safety | 83 | 35 |
Non-serious events are listed at a 5% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| ThermoDox + RFA | — | 118/343 (34.4%) | 327/343 (95.3%) |
| Sham + RFA | — | 37/334 (11.1%) | 301/334 (90.1%) |
| Event | ThermoDox + RFA | Sham + RFA |
|---|---|---|
| NeutropeniaBlood and lymphatic system disorders | 56/343 | 0/334 |
| LeukopeniaBlood and lymphatic system disorders | 19/343 | 0/334 |
| Febrile NeutropeniaBlood and lymphatic system disorders | 9/343 | 0/334 |
| Neutrophil Count DecreasedInvestigations | 9/343 | 0/334 |
| Upper Gastrointestinal HaemorrhageGastrointestinal disorders | 1/343 | 3/334 |
| PancytopeniaBlood and lymphatic system disorders | 3/343 | 0/334 |
| Hepatic RuptureInjury, poisoning and procedural complications | 3/343 | 0/334 |
| Abdominal Pain UpperGastrointestinal disorders | 2/343 | 2/334 |
| Oesophageal Varices HaemorrhageGastrointestinal disorders | 1/343 | 2/334 |
| IleusGastrointestinal disorders | 0/343 | 2/334 |
| Event | ThermoDox + RFA | Sham + RFA |
|---|---|---|
| AlopeciaSkin and subcutaneous tissue disorders | 173/343 | 2/334 |
| PyrexiaGeneral disorders | 56/343 | 98/334 |
| NeutropeniaBlood and lymphatic system disorders | 87/343 | 6/334 |
| LeukopeniaBlood and lymphatic system disorders | 73/343 | 5/334 |
| Aspartate Aminotransferase IncreasedInvestigations | 70/343 | 70/334 |
| Alanine Aminotransferase IncreasedInvestigations | 61/343 | 62/334 |
| Abdominal PainGastrointestinal disorders | 50/343 | 62/334 |
| NauseaGastrointestinal disorders | 53/343 | 43/334 |
| CoughRespiratory, thoracic and mediastinal disorders | 26/343 | 49/334 |
| White Blood Cell Count DecreasedInvestigations | 48/343 | 12/334 |
| Age, Customized(participants) | ThermoDox + RFA | Sham + RFA | Total |
|---|---|---|---|
| <40 | 7 | 10 | 17 |
| 40-<45 | 13 | 14 | 27 |
| 45-<50 | 18 | 25 | 43 |
| 50-<55 | 42 | 44 | 86 |
| 55-<60 | 57 | 50 | 107 |
| 60-<65 | 65 | 64 | 129 |
| 65-<70 | 44 | 45 | 89 |
| 70-<75 | 51 | 42 | 93 |
| 75-<80 | 33 | 34 | 67 |
| 80-<85 | 19 | 13 | 32 |
| 85+ | 2 | 4 | 6 |
| Missing | 3 | 2 | 5 |
| Sex: Female, Male(Participants) | ThermoDox + RFA | Sham + RFA | Total |
|---|---|---|---|
| Female | 87 | 84 | 171 |
| Male | 267 | 263 | 530 |
| Race/Ethnicity, Customized(participants) | ThermoDox + RFA | Sham + RFA | Total |
|---|---|---|---|
| Caucasian | 42 | 26 | 68 |
| Japanese | 8 | 11 | 19 |
| Korean | 83 | 91 | 174 |
| Taiwanese | 66 | 62 | 128 |
| Chinese | 115 | 125 | 240 |
| Other | 40 | 32 | 72 |
| Region of Enrollment(participants) | ThermoDox + RFA | Sham + RFA | Total |
|---|---|---|---|
| United States | 10 | 5 | 15 |
| Philippines | 18 | 21 | 39 |
| Taiwan | 68 | 63 | 131 |
| Hong Kong | 6 | 9 | 15 |
| Canada | 5 | 10 | 15 |
| Thailand | 16 | 8 | 24 |
| Malaysia | 7 | 6 | 13 |
| Japan | 8 | 10 | 18 |
| Italy | 32 | 17 | 49 |
| China | 104 | 104 | 208 |
| Korea, Republic of | 82 | 92 | 174 |
This study is completed, as verified in May 2024. You cannot join it, but the record below documents what was studied.
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