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American Society for Radiation Oncology


50 million Americans live in counties without a radiation oncology clinic, study finds

A new study found that over 50 million Americans live in counties without a radiation oncology clinic, highlighting vulnerabilities in the nation's cancer care infrastructure. Radiation oncology practices have closed disproportionately in rural areas and freestanding settings, raising concerns about patients' access to cancer care.

SourceAmerican Society for Radiation Oncology·JournalInternational Journal of Radiation Oncology*Biology*Physics·DateJul 9, 2026

ASTRO relaunches its foundation with a renewed focus and clearer identity to reflect accelerated progress in radiation oncology

The American Society for Radiation Oncology (ASTRO) has rebranded its research foundation as Speed of Light – The ASTRO Foundation, marking a renewed focus on advancing research and improving patient care. The new initiative aims to strengthen research collaborations and investments to drive progress in radiation oncology.

ASTRO publishes first clinical guideline on radiation therapy for gastric cancer

The American Society for Radiation Oncology (ASTRO) has published its first clinical guideline on radiation therapy for gastric cancer. The guidelines provide evidence-based recommendations for the role of radiation therapy in multidisciplinary care, including patient selection, integration with systemic therapy and treatment delivery.

SourceAmerican Society for Radiation Oncology·JournalPractical Radiation Oncology·TypeSystematic review·DateNov 18, 2025

Ten-year clinical trial report finds radiation comparable to surgery for early-stage non-small cell lung cancer

A new clinical trial report finds that stereotactic radiation therapy offers long-term survival outcomes comparable to surgery for patients with small, early-stage non-small cell lung cancer. The study included a larger patient population than previously published randomized studies and followed these patients for much longer.

First randomized study comparing proton and photon radiation therapy for breast cancer finds both preserve quality of life

A phase III trial comparing proton and photon radiation therapy for breast cancer found that patients report equally strong health-related quality of life with either treatment. Patients treated with protons were more likely to say they would recommend or choose it again, but overall patient-reported outcomes were similar.

Intensity-modulated radiation therapy (IMRT) matches proton therapy in patient-reported outcomes for oropharyngeal cancer

A phase III trial finds that intensity-modulated radiation therapy (IMRT) and proton beam therapy resulted in similar quality-of-life outcomes and low rates of side effects for people with locally advanced oropharyngeal cancer. Excellent tumor control and fewer long-term side effects were seen with both treatments.

Leading cancer societies update clinical guideline on post-mastectomy radiation therapy

The American Society for Radiation Oncology, American Society of Clinical Oncology, and Society of Surgical Oncology jointly published a guideline outlining when post-mastectomy radiation therapy (PMRT) is appropriate based on new evidence. PMRT reduces cancer recurrence risk in patients with node-positive disease or high-risk features.

SourceAmerican Society for Radiation Oncology·JournalPractical Radiation Oncology·TypeSystematic review·DateSep 16, 2025

ASTRO updates guideline on radiation therapy for high-grade diffuse glioma, the most common primary brain tumor in adults

The American Society for Radiation Oncology (ASTRO) has updated its guideline on radiation therapy for high-grade diffuse gliomas, the most common primary brain tumor in adults. The new guideline provides evidence-based recommendations for multidisciplinary treatment and addresses optimal radiation dosing, fractionation, and techniques.

SourceAmerican Society for Radiation Oncology·JournalPractical Radiation Oncology·DateJun 26, 2025

ASTRO issues its first clinical guideline on radiation therapy for anal cancer

The American Society for Radiation Oncology (ASTRO) has published its first clinical guideline on radiation therapy for anal cancer, providing guidance on treatment options and techniques. The guideline recommends a combination of radiation therapy and drug therapy as the standard of care, with intensity-modulated radiation therapy (IM...

SourceAmerican Society for Radiation Oncology·JournalPractical Radiation Oncology·DateFeb 27, 2025

ASTRO issues clinical guideline on radiation therapy for patients with HPV-related throat cancer

The American Society for Radiation Oncology (ASTRO) has published an updated clinical guideline for treating patients with HPV-related oropharyngeal squamous cell carcinoma. The guideline emphasizes the importance of tailored radiation strategies to maximize patient survival while minimizing side effects. It provides recommendations fo...

SourceAmerican Society for Radiation Oncology·JournalPractical Radiation Oncology·TypeSystematic review·DateJun 18, 2024

ASTRO clinical guideline on radiation therapy for bone metastases emphasizes patient-centered care

The updated clinical guideline recommends multiple dose-fractionation schemes to relieve pain and symptoms of bone and spine lesions. Advanced radiation techniques like intensity-modulated radiation therapy (IMRT) and stereotactic body radiation therapy (SBRT) are now routine clinical care for many patients.

SourceAmerican Society for Radiation Oncology·JournalPractical Radiation Oncology·DateMay 23, 2024

ASTRO issues patient-centered clinical guideline on partial breast irradiation for early-stage invasive breast cancer and DCIS

A new ASTRO clinical guideline recommends partial breast irradiation as a viable alternative to whole breast radiation for patients with early-stage invasive breast cancer or DCIS, based on evidence from large randomized trials. The guideline provides guidance on patient selection and best practices for delivering effective partial bre...

SourceAmerican Society for Radiation Oncology·JournalPractical Radiation Oncology·DateNov 15, 2023

High cure rate, low toxicity maintained with shortened radiation treatment for intermediate risk prostate cancer, study finds

A phase III trial suggests that fewer and higher doses of radiation therapy delivered over five sessions are as effective as lower doses delivered over several weeks for patients with locally advanced disease. The treatment achieved a 96% five-year disease control rate, comparable to 95% for conventional radiation.

Immunotherapy costs drive increase in Medicare spending for outpatient cancer care at the end of life

A recent study found that immunotherapy costs accounted for 84% of the net increase in Medicare spending on outpatient cancer care at the end of life. Payments for radiation oncology decreased by 2%, while palliative care spending rose, reflecting a shift towards hypofractionated radiation treatments.

SourceAmerican Society for Radiation Oncology·JournalInternational Journal of Radiation Oncology*Biology*Physics·DateFeb 27, 2023

Study finds large gap in breast cancer treatment recommendations for patients aged 70 vs 69

Researchers analyzed over 500,000 patient records and found that patients diagnosed at age 70 were nearly twice as likely to be passed over for post-surgical radiation therapy. This significant gap in treatment recommendations suggests that cognitive heuristics play a major role in physician decision-making.

SourceAmerican Society for Radiation Oncology·JournalInternational Journal of Radiation Oncology*Biology*Physics·DateJan 31, 2023