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European Organisation for Research and Treatment of Cancer


Long-term EORTC trial challenges assumptions about lymph node radiation therapy in breast cancer

A landmark EORTC trial with over 20 years of follow-up found that irradiation of internal mammary and medial supraclavicular lymph nodes reduces breast cancer mortality, but does not improve overall survival. Long-term cardiac and pulmonary toxicity was reported more frequently after IM-MS irradiation.

SourceEuropean Organisation for Research and Treatment of Cancer·JournalCA A Cancer Journal for Clinicians·TypeNews article·DateMay 17, 2026

Early results from a trial of active surveillance for low-risk DCIS are ‘reassuring’

Researchers have reported early, reassuring results from the LORD trial on active surveillance for low-risk DCIS. The study found that patients with active surveillance did not experience worse early outcomes compared to those who underwent immediate surgery, and that many chose active surveillance over surgery.

Radiotherapy rather than surgery may help reduce risk of lymphoedema in patients with breast cancer: results from pilot study

A pilot study found that axillary radiotherapy may be as effective as surgery in killing cancer cells while reducing the risk of painful swelling. The trial compared radiotherapy to axillary lymph node dissection and found similar cancer outcomes, but lower rates of lymphoedema after radiotherapy.

SourceEuropean Organisation for Research and Treatment of Cancer·TypeRandomized controlled/clinical trial·DateMar 25, 2026

Elinzanetant reduces severity and frequency of hot flushes and night sweats, regardless of type of hormone treatment breast cancer patients receive

A new analysis shows elinzanetant effectively relieves moderate-to-severe vasomotor symptoms (VMS) associated with endocrine therapy, regardless of the type of hormone treatment. The drug reduces VMS frequency and severity by blocking a protein that triggers these symptoms.

SourceEuropean Organisation for Research and Treatment of Cancer·TypeRandomized controlled/clinical trial·DateMar 25, 2026

Breast cancer recurrence remains low, even after ten years, with radiotherapy tailored to patient’s individual risk

A recent study found that breast cancer recurrence remains low even after ten years when patients receive tailored radiotherapy. The research involved 848 patients who underwent chemotherapy and surgery, and showed that radiotherapy can be reduced or eliminated in low-risk patients, leading to a significant decrease in side effects.

Breast reconstruction using polyurethane-coated implants reduces scarring and the need for further surgery

A new study shows that polyurethane-coated breast implants are associated with lower rates of capsular contracture and the need for corrective surgery after radiotherapy. Women who received these implants had a significantly lower risk of developing scarring and needing further surgery compared to those who received standard implants.

New international study shows access to patient-reported outcome data improves the consistency of the evaluation of cancer treatment adverse events

A large multinational clinical trial found that giving healthcare providers access to patient-reported outcome (PRO) data significantly improves the consistency of how treatment-related side effects are assessed in patients with cancer. This study highlights the importance of integrating the patient's voice into routine clinical evalua...

SourceEuropean Organisation for Research and Treatment of Cancer·JournalThe Lancet Oncology·TypeRandomized controlled/clinical trial·DateJan 27, 2026

SISAQOL-IMI consortium publishes key paper and launches online materials to advance patient-reported outcomes in cancer clinical trials

The SISAQOL-IMI consortium has published key guidelines for patient-reported outcomes in cancer clinical trials, providing a harmonised framework for designing, analysing, and interpreting PRO data. The new online toolkit offers practical resources to support implementation across the research and policy landscape.

SourceEuropean Organisation for Research and Treatment of Cancer·JournalThe Lancet Oncology·TypeSurvey·DateNov 25, 2025

New policy review highlights the importance of health-related quality of life in advanced cancer

A new policy review emphasizes the critical role of health-related quality of life (HRQoL) data in evaluating treatments for people with advanced cancer. The review recommends standardised responder criteria for HRQoL in clinical trials to improve patient care and decision-making.

SourceEuropean Organisation for Research and Treatment of Cancer·JournalThe Lancet Oncology·TypeLiterature review·DateSep 2, 2025

New policy review highlights the importance of health-related quality of life in advanced cancer

A new policy review emphasizes the importance of standardized responder criteria for health-related quality of life data in clinical trials for people with advanced cancer. The approach evaluates whether new treatments improve patients' day-to-day lives, alongside traditional clinical endpoints like overall survival.

SourceEuropean Organisation for Research and Treatment of Cancer·JournalThe Lancet Oncology·TypeLiterature review·DateSep 1, 2025

Patients with advanced bladder cancer with alterations in the FGFR3 gene respond well to investigational drug, TYRA-300

TYRA-300 shows promise in treating metastatic bladder cancer patients with FGFR3 gene mutations, achieving a 50% overall response rate and 100% disease control rate. The treatment also displays improved tolerability with lower side effects compared to existing pan-FGFR inhibitors.

SourceEuropean Organisation for Research and Treatment of Cancer·TypeRandomized controlled/clinical trial·DateOct 24, 2024

Scientists create cancer patients’ ‘digital twins’ to predict how well treatments may work

Researchers have developed a technology called FarrSight-Twin that creates digital twins of real cancer patients to predict treatment response. The approach was tested on published clinical trials and showed accurate predictions in all simulated studies, with 75% response rate among patients receiving the predicted best treatment.

SourceEuropean Organisation for Research and Treatment of Cancer·TypeComputational simulation/modeling·DateOct 24, 2024

Treatments used for HER2-positive breast cancers could help patients with rare gastrointestinal cancer

A clinical trial suggests that tucatinib and trastuzumab may benefit patients with rare bile duct cancer who also have HER2-mutated breast cancer. The treatment combination showed a 46.7% objective response rate in patients with bile duct cancer, compared to 22.2% in the broader patient group.

New insights into glioblastoma treatment for older adults patients

A recent clinical trial analysis found that patients with truly unmethylated MGMT promoter do not benefit from temozolomide treatment, challenging current treatment protocols. This study aims to transform the treatment landscape for older adults glioblastoma patients by identifying biomarkers for more personalized therapies.

SourceEuropean Organisation for Research and Treatment of Cancer·JournalNeuro-Oncology·TypeData/statistical analysis·DateOct 9, 2024

Breast cancer patients can safely avoid extensive removal of lymph nodes if they respond well to primary systemic treatment

A new study suggests that tailored treatment can predict the response of breast cancer patients to chemotherapy, allowing for safe omission of extensive lymph node removal. The MARI protocol showed a 95% overall survival rate and 89% disease-free survival rate in patients who achieved pathological complete response.

Low-dose radiotherapy boost helps prevent local recurrence with better cosmetic outcomes in young breast cancer patients

Researchers found that young breast cancer patients who received a low-dose radiotherapy boost had a lower risk of local recurrence after 10 years, with only 4.4% experiencing recurrence. In contrast, high-dose boosts resulted in fewer recurrences but also more severe fibrosis and cosmetic issues.

SourceEuropean Organisation for Research and Treatment of Cancer·TypeRandomized controlled/clinical trial·DateMar 20, 2024

AI tool predicts risk of side effects after surgery and radiotherapy in breast cancer patients

A new AI tool can predict which breast cancer patients are at risk of chronic arm swelling after surgery and radiotherapy. The tool, developed by international researchers, uses machine learning algorithms to analyze patient data and provides easily understandable explanations for doctors and patients.

Addition of atezolizumab to chemotherapy after surgery does not improve survival for triple negative breast cancer

The ALEXANDRA/IMpassion030 phase 3 trial found that adding atezolizumab to chemotherapy after surgery did not improve survival for early-stage triple-negative breast cancer patients. Researchers also found no benefit in different sub-groups, such as those with lymph node spread and PD-L1 positive cancer.

SourceEuropean Organisation for Research and Treatment of Cancer·TypeRandomized controlled/clinical trial·DateMar 19, 2024

Exercise helps patients with advanced breast cancer, especially if they are suffering with pain

A randomized controlled trial found that exercise programmes reduced fatigue and improved quality of life for patients with metastatic breast cancer. The study showed the greatest benefit among younger patients, but also suggested that supervised exercise can be beneficial for all patients with advanced disease.

SourceEuropean Organisation for Research and Treatment of Cancer·TypeRandomized controlled/clinical trial·DateMar 19, 2024

New data show pembrolizumab improves breast cancer outcomes regardless of age or menopausal status

New data show that adding pembrolizumab to chemotherapy before and after surgery for breast cancer leads to better outcomes, with significant increases in pathological complete response rates across all age groups. The study also found similar rates of breast-conserving surgery and mastectomy, as well as lower residual cancer burdens.

SourceEuropean Organisation for Research and Treatment of Cancer·TypeRandomized controlled/clinical trial·DateMar 19, 2024

Genetic test identifies patients with triple negative breast cancer who are unlikely to respond to immunotherapies

A new genetic test has identified patients with triple negative early-stage breast cancer who are unlikely to respond to immunotherapy drugs. The test, called ImPrintTN, can predict a patient's likelihood of responding to these treatments and help avoid severe side effects.

SourceEuropean Organisation for Research and Treatment of Cancer·TypeRandomized controlled/clinical trial·DateMar 19, 2024

Researchers identify how certain immune cells contribute to worse survival in patients with HER2-positive breast cancer

Researchers found that HER2-positive breast cancer patients with high levels of tumour infiltrating lymphocytes in residual disease have significantly shorter overall survival. High levels of TILs are associated with poorer outcomes, while lower levels are linked to improved survival rates.

Women with benign breast disease face higher risk of breast cancer in the long term

A large observational study found that women diagnosed with benign breast disease through screening are at a higher risk of developing breast cancer in the long term. The risk persisted for at least two decades and was found to be significantly higher among women with benign breast disease compared to those without.

SourceEuropean Organisation for Research and Treatment of Cancer·JournalInternational Journal of Environmental Research and Public Health·TypeObservational study·DateNov 17, 2022

Longest follow-up of patients with early breast cancer shows radiotherapy does not improve survival after 30 years

A 30-year follow-up study of patients with early breast cancer found that radiotherapy does not improve overall survival rates after 10 years but reduces the risk of recurrence in the same breast. The study's findings challenge traditional concepts of long-term anti-cancer benefits of radiotherapy.

SourceEuropean Organisation for Research and Treatment of Cancer·TypeRandomized controlled/clinical trial·DateNov 17, 2022

Ultrasound-guided surgery is quicker, less painful and more effective for treating early form of breast cancer

Researchers at Clinica Universidad de Navarra found that ultrasound-guided surgery (IOUS) is more effective and quicker than traditional wire-localisation methods for treating ductal carcinoma in situ (DCIS). This technique reduces the risk of positive margins, a common cause of second operations.

Gradual increase in daily activity with psychological therapies can improve mental health for cancer patients and survivors

A systematic review found significant effects on anxiety, depression, fatigue, physical activity, quality of life, and social impairment in cancer patients who combined behavioural graded activity with psychological therapies. The effects remained significant after a period of one to three months.

Personalized breast cancer screening could improve cancer survival and reduce overdiagnosis

A new model predicts individual breast cancer risk based on ten known risk factors, allowing for tailored screening strategies. The study found that the risk of developing breast cancer ranges from 0.22% to 7.43%, with some factors, such as exercise, having a greater impact than previously thought.

Targeted lung cancer drug shows promise in phase I/II clinical trial

The TRIDENT-1 trial suggests that repotrectinib could be effective for treating ROS1 positive non-small cell lung cancer (NSCLC) in patients who have received other targeted treatments and those who have not. The drug showed promising results, with an objective response rate of 79% in patients not previously treated with a ROS TKI.

Preliminary data suggest that ROS1 inhibitor, NVL-520, is well-tolerated and active in non-small cell lung cancer: first results from ARROS-1 phase I clinical trial

In the ARROS-1 trial, 48% of patients achieved partial responses to NVL-520, with responses seen across all dose levels and in heavily pre-treated patients. The treatment also showed promise for brain metastases, with three out of three patients experiencing measurable response or no emergence of new metastases.

SourceEuropean Organisation for Research and Treatment of Cancer·TypeRandomized controlled/clinical trial·DateOct 28, 2022

Anti-cancer drugs, olaparib and adavosertib, work best when given sequentially in patients with advanced tumours driven by DNA damage response mutations: results from Phase Ib STAR clinical trial

A Phase Ib clinical trial found that sequential administration of PARP inhibitor olaparib and WEE1 inhibitor adavosertib is safe and well-tolerated, with promising signs of anti-tumor activity in patients with advanced cancers driven by DNA damage response mutations. The combination showed durable responses in patients with resistant c...

SourceEuropean Organisation for Research and Treatment of Cancer·TypeRandomized controlled/clinical trial·DateOct 27, 2022

Experimental drug to treat liver cancer shows evidence of activity with manageable side effects

A new experimental drug has shown promising results in treating liver cancer, with two patients experiencing a partial response to the treatment. The drug, NMS-01940153E, targets an enzyme that plays a critical role in cell division and growth, and its side effects are manageable.

SourceEuropean Organisation for Research and Treatment of Cancer·TypeRandomized controlled/clinical trial·DateOct 27, 2022

Researchers identify specific alterations in the BRAF gene that may affect response to treatment and survival in adult brain cancers

The study found that BRAF alterations, particularly Class I mutations like v600E, are associated with improved overall survival in adults with glioma. However, the effectiveness of targeted therapies depends on the specific type and combination of genetic alterations driving the cancer.

SourceEuropean Organisation for Research and Treatment of Cancer·TypeRandomized controlled/clinical trial·DateOct 26, 2022

Results revealed from phase I clinical trial of the first drug to successfully inhibit the MYC gene, which drives many common cancers

Researchers have found a drug that targets the key, cancer-causing gene MYC has been able to inhibit its function safely and effectively. Eight out of 12 patients showed stabilisation of disease after treatment with OMO-103, with one patient experiencing a reduction in tumour-derived DNA circulating in the blood stream.

SourceEuropean Organisation for Research and Treatment of Cancer·TypeRandomized controlled/clinical trial·DateOct 25, 2022

Liquid biopsies can detect which cancer patients may be at higher risk of developing additional blood cancers

Researchers found that liquid biopsies can detect clonal haematopoiesis, a condition placing patients at higher risk of developing myelodysplastic syndrome or acute myeloid leukaemia. The study suggests that these patients should be referred for further evaluation to uncover actual risk and identify potential diagnostic pathways.