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Palliative Lattice Stereotactic Body Radiotherapy (SBRT)

2019-10-24 12:49:25 | BioPortfolio

Summary

Standard palliative radiotherapy regimens may provide limited durability of response in large tumors. Thus, there is a clinical need for a new approach. The Lattice SBRT approach will deliver 20 Gy in 5 fractions with partial volume simultaneous integrated boosts to 66.7 Gy. This is hypothesized to improve symptom response, local control, and better prime the tumor microenvironment for immune response compared with standard palliative radiotherapy doses. It is also hypothesized that this will be associated with less toxicity than the traditional homogenous SBRT plan delivered to a large tumor. Blood will be collected before and after Lattice SBRT for evaluation of the peripheral blood immune microenvironment.

Study Design

Conditions

Cancer

Intervention

Lattice stereotactic body radiation therapy, Peripheral blood

Location

Washington University School of Medicine
Saint Louis
Missouri
United States
63110

Status

Not yet recruiting

Source

Washington University School of Medicine

Results (where available)

View Results

Links

Published on BioPortfolio: 2019-10-24T12:49:25-0400

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Medical and Biotech [MESH] Definitions

A radiological stereotactic technique developed for cutting or destroying tissue by high doses of radiation in place of surgical incisions. It was originally developed for neurosurgery on structures in the brain and its use gradually spread to radiation surgery on extracranial structures as well. The usual rigid needles or probes of stereotactic surgery are replaced with beams of ionizing radiation directed toward a target so as to achieve local tissue destruction.

Preliminary cancer therapy (chemotherapy, radiation therapy, hormone/endocrine therapy, immunotherapy, hyperthermia, etc.) that precedes a necessary second modality of treatment.

Drug therapy given to augment or stimulate some other form of treatment such as surgery or radiation therapy. Adjuvant chemotherapy is commonly used in the therapy of cancer and can be administered before or after the primary treatment.

Irradiation of one half or both halves of the body in the treatment of disseminated cancer or widespread metastases. It is used to treat diffuse metastases in one session as opposed to multiple fields over an extended period. The more frequent treatment modalities are upper hemibody irradiation (UHBI) or lower hemibody irradiation (LHBI). Less common is mid-body irradiation (MBI). In the treatment of both halves of the body sequentially, hemibody irradiation permits radiotherapy of the whole body with larger doses of radiation than could be accomplished with WHOLE-BODY IRRADIATION. It is sometimes called "systemic" hemibody irradiation with reference to its use in widespread cancer or metastases. (P. Rubin et al. Cancer, Vol 55, p2210, 1985)

Organs which might be damaged during exposure to a toxin or to some form of therapy. It most frequently refers to healthy organs located in the radiation field during radiation therapy.

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