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About
This is a multi-institutional phase I/II clinical trial with concomitant local hyperthermia and proton beam radiotherapy in patients with primary or recurrent unresectable soft tissue sarcomas of the extremities, trunk, retroperitoneum (except intrabdominal). The primary purpose would be to assess the safety and efficacy of this approach along with local tumour regressions and subsequent tumour downstaging, thereby enabling a near total removal of these tumours following the hyperthermia and proton beam therapy.
Full description
Hyperthermia would be delivered at Kantonsspital Aarau (KSA) with superficial or deep hyperthermia treatment units as may be appropriate. All patients would undergo a pre-hyperthermia treatment planning and a temperature of around 41.5 Centigrade to 42.5 Centigrade would be aimed during hyperthermia sessions.Hyperthermia would be delivered once a week and the treatment sessions would last for around 60 minutes of active heating.
Proton bean therapy would be carried out at Center of Proton Therapy, Paul Scherrer Institute (PSI), Villigen using scanning beam proton therapy. A preoperative dose of 55 - 60 Gray equivalent (GyE) or those considered for radical treatment, 72-76 GyE would be delivered, 5 days a week at 1.8 - 2 Gy/fr.
On days of both hyperthermia at KSA and proton therapy at PSI, the time interval between the two treatments could be 90 to 150 minutes, taking into consideration the time to travel between the two institutions. Hyperthermia in these days would follow proton beam therapy.
Enrollment
Sex
Ages
Volunteers
Inclusion criteria
Histopathologically proven and classified soft tissue sarcoma (STS) as per the WHO classification (2002). For all primary tumours, biopsy would be done within 2 months prior to registration and reviewed by the study pathologist. For all recurrent tumours, if prior biopsy has been done elsewhere, the histopathology would be reviewed by the study pathologist.
Primary STS of extremities, trunk (except intrabdominal) and retroperitoneal which are,
Recurrent STS extremities and trunk would be eligible if
All patients having extremity STS with stages T2 and G2 or 3 with M0 (Stages IIB and III as per American Joint Committee on Cancer, AJCC 2010), would be included. For patients of STS of trunk, tumours less than 5cm may also be included if they are considered unresectable.
Age more than 18 years
Eastern Cooperative Oncology Group,ECOG performance scale 0 and 1
Female patients must use effective contraception; must not be pregnant or lactating
Life expectancy of atleast 2 years based on the age and co-morbidities, but excluding diagnosis of STS
Absence of psychological, familial, sociological or geographical condition that could potentially hamper compliance with the study protocol and follow-up schedule
Willing to travel to Paul Scherrer Institute for proton therapy and to Kantonsspital Aarau for Hyperthermia treatment.
Agree to comply with the protocol
Patients must sign a study specific informed consent form prior to registration.
Exclusion criteria
Histopathology of rhabdomyosarcoma, extraosseous Ewing's, primary neuroectodermal tumour, aggressive fibromatosis (desmoids tumours), dermatofibrosarcoma protuberans, gastrointestinal stromal tumours, osteosarcoma, chondrosarcoma, Kaposi's sarcoma or angiosarcoma of scalp/face/neck
Prior radiotherapy to the site of treatment
Intrabdominal soft tissue sarcomas
Use of neoadjuvant chemotherapy prior to radiotherapy or surgery
Patients with regional nodal metastasis
Patients with unequivocal distant metastasis
No prior or concurrent malignancies other than surgically treated squamous cell or basal cell carcinoma of the skin which are not in the area of the present malignancy or in situ carcinoma of the skin
No serious medical illness which would prevent informed consent or limit survival to less than 2 years
Active uncontrolled bacterial, viral or fungal infections until these conditions are corrected or controlled.
Psychiatric or addictive disorders or other conditions that, in the opinion of the investigator would preclude the patient from meeting the study requirements.
Patients having metal implants, pacemakers or clustered markers
Patient who had a history of myocardial infarction within the past 12 months
No connective disease disorders that contraindicate radiotherapy, e.g., Scleroderma
Primary purpose
Allocation
Interventional model
Masking
26 participants in 1 patient group
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Central trial contact
Niloy R Datta, MD, DNB,; Stephan Bodis, MD
Data sourced from clinicaltrials.gov
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