Condition category
Date applied
Date assigned
Last edited
Retrospectively registered
Overall trial status
Recruitment status
No longer recruiting
Publication status
Results overdue

Plain English Summary

Background and study aims:
Surgery for ovarian cancer involves the removal of pelvic organs (the womb, fallopian tubes and ovaries), abdominal organs ( the omentum and the appendix) and any other tissues that may have been affected. The more of the cancer that is removed, the greater the time between the surgery and the cancer coming back and the longer the patient will survive with the disease. Removing all visible signs of a cancer, however, is not easy. The disease is often advanced and widespread and some tumours will be located in sensitive areas such as the surface of the bowel, diaphragm and other important internal structures. In this study, doctors will use a new technology – the PlasmaJet – to remove tumours that are found in these sensitive areas. The PlasmaJet uses a jet of neutral argon plasma to vaporise the tumours. The PlasmaJet has been used in other areas of medicine, such as sealing bleeding tissue (coagulation) and burning away thin layers of tissue (ablation) but this is the first study that will look at the effects of this technology in ovarian cancer surgery.

Who can participate?
Women with stage III ovarian cancer, that is, with tumours in at least one ovary and where there is evidence that the disease has spread to the abdomen (confirmed peritoneal metastasis outside the pelvis). Patients have to be well enough to cope with the treatment and written consent is obtained in all cases.

What does the study involve?
The study will involve assessing how well the neutral argon plasma (PlasmaJet) technology performs in removing (vapourising) tumours during surgery for ovarian cancer.

What are the possible benefits and risks of participating?
There may not be any immediate benefit to the participants, however the working hypothesis is that it might be safer and faster to debulk ovarian cancer with the PJ device.

Where is the study run from?
Royal Surrey County Hospital, Guildford, UK

When is the study starting and how long is it expected to run for?
March 2013 until the end of December 2017.

Who is funding the study?
GRACE, Department of Gynaecological Oncology, The Royal Surrey County Hospital NHS Foundation Trust, UK

Who is the main contact?
Dr Kavitha Madhuri
Department of Gynaecological Oncology
Royal Surrey County Hospital, Guildford, UK

Trial website

Contact information



Primary contact

Dr Kavitha Madhuri


Contact details

Dept. of Gynaecological Oncology
Royal Surrey County Hospital NHS Foundation Trust
United Kingdom

Additional identifiers

EudraCT number

2014-002103-24 number

Protocol/serial number


Study information

Scientific title

A pilot, randomised single blind study to evaluate the utility and efficacy of neutral argon plasma as a new technology in achieving complete cytoreduction of advanced epithelial ovarian carcinoma - initial feasibility study



Study hypothesis

To evaluate the ability of PJ to achieve optimal cytoreduction (nil visible disease) in women undergoing open debulking surgery for EOC.

Ethics approval

National Research Ethics Committee - South East Coast (Surrey), 04/12/2012, ref: 12/LO/1229

Study design

Pilot, randomised single blind study

Primary study design


Secondary study design

Randomised controlled trial

Trial setting


Trial type


Patient information sheet

Not available in web format, please use the contact details below to request a patient information sheet.


Advanced (Stage 3/4) Epithelial Ovarian Cancer


This is a initial feasibility pilot RCT. Each participant may be randomised to PJ vs No PJ at the time of their debulking surgery. Each participant will then be followed up for at least the next 5 years.

Intervention type



Not Applicable

Drug names

Primary outcome measure

The primary outcome measure is the ability to achieve complete cytoreduction (nil macroscopic residual). To evaluate the ability of PJ to achieve optimal cytoreduction (nil visible disease) in women undergoing open debulking surgery for EOC

Secondary outcome measures

1. To explore if achieving optimal cytoreduction helps increase disease free interval and hence improve survival
2. To categorise the histopathological effects of the depth of tumour destruction of metastatic EOC using the PJ
3. Evaluate the depth of tissue damage caused with a range of power settings and interaction times in vitro following surgery
4. To document the side-effect profile post-operatively following extensive surgery
5. Collate patient reported outcome measures using a validated tool

Overall trial start date


Overall trial end date


Reason abandoned (if study stopped)


Participant inclusion criteria

1. Imaging+/- Clinical +/- laparoscopic e/o pelvic mass and metastatic disease (FIGO III/IV disease) at presentation
2. Confirmation of malignancy on histological/cytological criteria
3. All women aged 18 or over with newly diagnosed FIGO stage III to Stage IV EOC undergoing surgical treatment
4. All women fit to undergo treatment
5. No synchronous malignancy likely to interfere with comparisons
6. Written and informed patient consent

Participant type


Age group




Target number of participants


Participant exclusion criteria

1. Patient choice
2. Patient unfit for any treatment modality
3. Patients who are medically unfit for surgery and would only be suitable for chemotherapy

Recruitment start date


Recruitment end date



Countries of recruitment

United Kingdom

Trial participating centre

Dept. of Gynaecological Oncology
United Kingdom

Sponsor information


Royal Surrey County Hospital NHS Foundation Trust (UK)

Sponsor details

c/o Cathy Mayes
Research & Development Department
Royal Surrey County Hospital NHS Foundation Trust
United Kingdom

Sponsor type

Hospital/treatment centre



Funder type

Hospital/treatment centre

Funder name

GRACE, Department of Gynaecological Oncology, The Royal Surrey County Hospital, UK

Alternative name(s)

Funding Body Type

Funding Body Subtype


Results and Publications

Publication and dissemination plan

Not provided at time of registration

Intention to publish date

Participant level data

Not provided at time of registration

Basic results (scientific)

Publication list

Publication citations

Additional files

Editorial Notes

19/02/2019: Internal review