Prediction of Distant Metastases After Stereotactic Body Radiation Therapy for Early Stage NSCLC: Development and External Validation of a Multi-Institutional Model.

Introduction: Distant metastases (DMs) are the primary driver of mortality for patients with early stage NSCLC receiving stereotactic body radiation therapy (SBRT), yet patient-level risk is difficult to predict. We developed and validated a model to predict individualized risk of DM in this population.

Methods: We used a multi-institutional database of 1280 patients with cT1-3N0M0 NSCLC treated with SBRT from 2006 to 2015 for model development and internal validation.

Multi-institutional analysis of stereotactic body radiation therapy for operable early-stage non-small cell lung carcinoma.

Purpose: Although stereotactic body radiation therapy (SBRT) is the standard of care for inoperable early-stage non-small cell lung carcinoma (NSCLC), its role for medically operable patients remains controversial. To address this knowledge gap, we conducted a multi-institutional study to assess post-SBRT disease control and survival outcomes in medically operable patients.

Methods: We conducted a retrospective cohort study including patients with biopsy-proven cT1-2N0M0 NSCLC treated with definitive SBRT (2006-2015).

Stereotactic body radiotherapy with adjuvant systemic therapy for early-stage non-small cell lung carcinoma: A multi-institutional analysis.

Purpose: Although adjuvant systemic therapy (ST) is often recommended for the treatment of patients with high-risk, early-stage non-small cell lung carcinoma (NSCLC) after surgery, there is little evidence supporting the use of ST with stereotactic body radiotherapy (SBRT).

Methods: We conducted a retrospective cohort study using a multi-institutional database to identify consecutive patients with T1-3N0M0 NSCLC treated with definitive SBRT from 2006-2015. Treatment groups were defined as those who received SBRT + ST or SBRT alone.

Radiation dose and cardiac risk in breast cancer treatment: An analysis of modern radiation therapy including community settings.

Purpose: Adjuvant radiation therapy (RT) for breast cancer improves outcomes, but prior studies have documented substantive cardiac dose and cardiac risk. We assessed the mean heart dose (MHD) of RT and estimated the risk of RT-associated cardiac toxicity in women undergoing adjuvant RT for breast cancer in contemporary (predominantly) community practice.

Methods And Materials: We identified women with left-sided breast cancer receiving adjuvant RT between 2012 and 2014 from 94 centers across 16 states.

Increased Number of Beam Angles Is Associated With Higher Cardiac Dose in Adjuvant Fixed Gantry Intensity Modulated Radiation Therapy of Left-Sided Breast Cancer.

Purpose: To analyze the relationship between angle number and mean heart dose (MHD) in adjuvant fixed gantry intensity modulated radiation therapy (FG-IMRT) treatment of left-sided breast cancer as is currently practiced in the community.

Methods And Materials: We performed a retrospective, multi-institutional review of women with left-sided breast cancer receiving adjuvant FG-IMRT between 2012 and 2014, encompassing 85 centers in 15 states. Bivariate and multivariate regression analyses were done to identify factors associated with MHD.