PIT: Prophylactic Irradiation of Tracts in Patients With Malignant Pleural Mesothelioma

Brynn Chappell

Status and phase

Terminated

Phase 3

Conditions

Mesothelioma

Treatments

Radiation: Prophylactic Irradiation of Tracts (PIT)

Study type

Interventional

Funder types

Other

Identifiers

NCT01604005

PB-PG-1010-23232 (Other Grant/Funding Number)

ISRCTN04240319 (Registry Identifier)

08_DOG07_93

Details and patient eligibility

About

The PIT (Prophylactic Irradiation of Tracts) trial will determine whether or not PIT radiotherapy is effective in preventing or delaying the onset of chest nodules in patients with Mesothelioma.

Full description

Mesothelioma is a rare form of cancer affecting the protective lining that covers many of the body's internal organs. The most commonly affected areas are the lungs and internal chest wall. In the UK over 2300 patients are diagnosed with mesothelioma each year and the numbers are increasing.

As part of the diagnosis and treatment of mesothelioma, patients may undergo a procedure which involves inserting a thin tube into the chest wall enabling an internal examination and for any biopsies or samples of fluid to be taken. These procedures can result in the development of skin lumps or nodules along the tract created by inserting the tube. To try and reduce the risk of these nodules developing in the tract or at the site of the scar, radiotherapy can be given to the chest wall at the site of the tract after the procedure has been performed; this type of radiotherapy is known as prophylactic irradiation of tracts or PIT.

Although many hospitals already give patients this type of radiotherapy treatment to the chest wall we still do not know if the treatment works. This trial has been designed to answer the question about the effectiveness of PIT radiotherapy. If PIT is found to be effective in preventing or delaying the development of these skin nodules then it can be offered to all patients as part of their treatment. However, if we discover that PIT is not effective this will save patients from undergoing ineffective treatment and having to spend time making unnecessary extra visits to hospital

Enrollment

375 patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Either sex, age ≥ 18 years
Diagnosis of mesothelioma by multi-disciplinary team (MDT). All histological subtypes are eligible for the trial
ECOG performance status 0-2 (Appendix C)
Inoperable disease or operable disease in patients unsuitable for surgery as decided by a MDT
Chest wall intervention with video-assisted thoracoscopy (VATS), open surgical biopsy (mini-thoracotomy), local anaesthetic thoracoscopy or chest drain
Able to start radiotherapy within 42 days (6 weeks) of the most recent chest wall procedure
Chest wall intervention scar visible at time of randomisation
Radiotherapy target volume acceptable by the local radiotherapist
Patients enrolled on other clinical trials could be considered after discussion with the chief investigators

Exclusion criteria

Patients who underwent a thoracotomy (as large thoracotomy scars may not be adequately covered by this radiotherapy technique)
Previous radiotherapy to the region of the chest wall intervention site
Indwelling pleural catheter in-situ at the intervention site
Patients currently receiving chemotherapy