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CompletedNCT04904042PlasmajetUpdated Jun 2, 2022

Study of Safety and Efficiency of the Use of Neutral Argon Plasma in Cyto-reduction of Miliary Implants in the Peritoneal Surface.

An interventional study of Use of plasma of neutral argon in Peritoneal Carcinomatosis, sponsored by Maimónides Biomedical Research Institute of Córdoba. Completed at 1 site in Spain. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2022-06-02.

Sponsored by Maimónides Biomedical Research Institute of Córdoba · Not applicable, Interventional, and Other

Phase
Not applicable
Study type
Interventional
Enrollment
10
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

Neutral argon plasma vaporization shows little damage to normal tissue and allows a complete removal of tumor tissue, that is, without leaving any cell debris viable tumor.

Our primary objective is to evaluate the effectiveness and safety of neutral argon plasma on peritoneal implants with different dosimetry in vivo and ex vivo.

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Conditions studied

  • Peritoneal Carcinomatosis

Keywords

  • Peritoneal carcinomatosis
  • Cancer
  • Neutral argon plasma
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In context

Carcinoma

6,738 studies on the registry are indexed under Carcinoma; 1,159 are open to participants now.

This study's enrollment of 10 is below the median of 45 across 5,167 interventional studies indexed under Carcinoma.

Browse Carcinoma studies →

Lead sponsor

Maimónides Biomedical Research Institute of Córdoba is the lead sponsor of 78 studies on the registry; 20 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Patients diagnosed with peritoneal carcinomatosis (an attempt will be made to cover all histological types of carcinomatosis in similar distribution as 2 patients with carcinomatosis of colonic origin, 2 patients with carcinomatosis of ovarian origin, 2 patients with peritoneal pseudomyxoma, 2 patients with peritoneal mesothelioma and 2 patients with carcinomatosis of gastric origin) with PCI greater than 0 in regions 10-13, and that have been selected as candidates for cytoreductive surgery + HIPEC or for laparoscopy-laparotomy explorer (selection criteria established according to clinical practice usual), and that present peritoneal miliary dissemination consistent with the characteristics of this study for the tissue under examination (implants smaller than 0.25 cm, CC1).
  • Signature of specific informed consent for participation in this study and to obtain biological samples.

Exclusion criteria

Exclusion Criteria:

  • Patients not suitable for CRS and HIPEC, according to the clinical criteria of the Surgery Unit Oncology and multidisciplinary committee.
  • Refusal of the patient to participate in the study.
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Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
10 participants (actual)

Study arms

  • Experimental
    Use of plasma of neutral argon

    Use of plasma of neutral argon in the eradication of tumor implants at the mesentery level, with different doses (established according to the percentage of energy used) and distances of application and time. It will also be compared in-vivo with control therapy of Monopolar electrofulguration at a power of 100 in cut mode with ball-tip terminal.

    Device: Use of plasma of neutral argon

Interventions

  • DeviceUse of plasma of neutral argon

    Evaluation of the mesentery or peritoneum area infiltrated by miliary implants that is going to be treated. Determination of the PCI. Collection of several samples of the mesenteric peritoneum or parietal peritoneum with tumor involvement (implants between 1-2.5mm of diameter). It will established a matrix which will be divided into 12 quadrants where the tissue with implants will be placed and it will be treated according to specific power (80-100%), and for an action time of 2-4 seconds or until macroscopic tumor destruction. For each power, application of Plasmajet at 1, 2 and 3 cm from the target tumor tissue. The in-vivo effect will be evaluated with the use of ball-tip in terms of damage to the serosa or vascularization of the mesentery.

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What researchers measure

Primary outcomes

  1. Pathological evaluation

    Pathological evaluation, in the Pathological Anatomy service of the University Hospital Reina Sofía, of both samples of peritoneum and evaluation of the presence of cells tumors and degree of tissue destruction, after performing the procedure according to the indications of the "Interventions" section. The specimens will be fixed in formaldehyde for about 48 hours and cut and fixed in paraffin. They will be stained with hematoxylin and eosin according to protocol, after being cut in the area of greatest macroscopic lesion produced by the device. It will be used microscopy and optical micrometer to measure the depth of vaporization of the tissue, as well as damage to adjacent healthy tissue. Depth is measured from a line parallel to the surrounding tissue to the point deeper tissue evaporation. As all quadrants will include tumor implants, they will also have flat tissue without tumor and it will be which the depth is measured from.

    Time frame: Through study completion, an average of 1 year.

Secondary outcomes

  1. Evaluation of mesentery vascular damage and damage to the intestinal serosa.

    Evaluation of mesentery vascular damage and damage to the intestinal serosa. It will be evaluated in-vivo and it will be analyzed by a third party on video.

    Time frame: During the surgery and through study completion, an average of 1 year.

  2. Morbidity associated with treatment.

    Evaluation of morbidity associated with treatment. Using CTCAE scale v4.0 30 days after the intervention. We will pay special attention to events associated with hemoperitoneum, intestinal fistulas or intestinal perforations.

    Time frame: 30 days after the intervention

  3. Mortality associated with treatment.

    Evaluation of mortality associated with treatment. Using CTCAE scale v4.0 30 days after the intervention. We will pay special attention to events associated with hemoperitoneum, intestinal fistulas or intestinal perforations.

    Time frame: 30 days after the intervention

  4. Global morbidity.

    Evaluation of global morbidity using CTCAE v 4.0 scale.

    Time frame: Within the 30 days post-intervention

  5. Global mortality.

    Evaluation of global mortality using CTCAE v 4.0 scale.

    Time frame: Within the 30 days post-intervention

07

Study locations

1 site
  • University Hospital Reina Sofia
    Cordoba, 14004, Spain
08

References and documents

Individual participant data

Plan to share: Yes — The data will be shared after the conclusion of the study and the results were published

Supporting information: Study protocol, Icf, Csr

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 2, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04904042
Lead sponsor
Maimónides Biomedical Research Institute of Córdoba
Responsible party
Sponsor
First posted
May 27, 2021
Start date
Jun 1, 2021
Primary completion
Apr 3, 2022
Completion
May 3, 2022
Last update
Jun 2, 2022

Study contacts

Alvaro Arjona-Sanchez, PhD
principal investigator · University Hospital Reina Sofia

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in May 2022. You cannot join it, but the record below documents what was studied.

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