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The Lead Doctors, scientists, and researchers shared new research about ways to tackle cancer at the 2026 American Society of Clinical Oncology (Asco) annual meeting, the world's largest cancer conference. Breakthroughs in Cancer Treatment The event in Chicago, attended by 40,000 health professionals, featured more than 200 sessions and 2,700 poster presentations on this year's theme, “the science and practice of translation: improving cancer outcomes worldwide”. Smart Drugs in Cancer Treatment Researchers have developed a smart drug that stops cancer cells hiding. The experimental tablet, GRWD5769, can help shrink tumours by at least 30% in six of the world’s most common forms of the disease, delegates in Chicago were told. 26 of 83 patients with cervical, bladder, liver, bowel, lung or head and neck cancers who were given GRWD5769 alongside cemiplimab had tumour reductions of at least 30%. 15 had tumour reductions of at least 30%. A Daily Pill for Pancreatic Cancer A pill that doubles survival time in patients with pancreatic cancer was presented at the conference. In a trial of 500 patients, all of whom had pancreatic cancer that had spread, the pill, daraxonrasib, doubled survival time, with fewer side-effects compared with chemotherapy. Patients who took the drug lived substantially longer, for an average of 13.2 months, compared with 6.6 to 6.7 months for patients who had chemotherapy. Safely Skipping Some Treatments Some patients can safely skip some treatments, according to research presented at the conference. A genomic test could pave the way for a new era of personalised medicine, enabling doctors to determine which patients can safely skip chemotherapy. The Optima trial, led by University College London, followed 4,000 patients with newly diagnosed breast cancer in the UK, Norway, Sweden, Australia, New Zealand and Thailand. Those with a low score on the genomic test could be treated safely with hormone therapy alone. The Future of Cancer Treatment Urgent action is required to cope with rising cancer cases. The world faces a cancer workforce crisis, experts said, with a shortage of 100 million staff expected by 2050 when 100,000 people will be being diagnosed every day. A 21% increase in cancer incidence is predicted, according to a report presented at the conference. The rate is set to rise from 165 per 100,000 people in 2025 to 200 per 100,000 in 2050.

The Breakthrough in Breast Cancer TreatmentA landmark international study has revealed that millions of women with breast cancer could safely skip chemotherapy thanks to a genomic test that determines who needs the treatment and who doesn't. The randomised trial specifically examined whether the test could identify patients who would not benefit from chemotherapy, allowing them to avoid the potentially debilitating treatment without compromising their outcomes.The Scientific Evidence Behind the TestThe results of the Optima trial, which will be presented at the American Society of Clinical Oncology's annual meeting, are being hailed by experts as gamechanging. The five-year cancer-free survival rate was 93.7% in the group that skipped chemotherapy, which was statistically non-inferior to the 94.9% rate in patients randomly assigned to receive chemotherapy.The Prosigna genomic test analyzes the activity of 50 specific genes in tumor tissue to determine the molecular subtype and develops a risk of recurrence score to help doctors decide if chemotherapy is necessary. This precision medicine approach allows for personalized treatment decisions based on the unique characteristics of each patient's cancer.A Patient's Journey to Avoiding ChemotherapyKaren Bonham, a speech and language therapist from Swansea in Wales, was one of 4,429 patients with breast cancer recruited to the trial from countries including the UK, Norway, Sweden, Australia, New Zealand and Thailand. Diagnosed with cancer in 2017 at the age of 55 after routine breast screening, Bonham described the news as shocking."It certainly propels you into a world of uncertainty. Life priorities realign – you simply want to survive," she said. Dreading chemotherapy, she agreed to join the Optima trial after undergoing surgery. She was only days away from starting treatment and had already cut her hair short when the results came back in September 2017.While taking a walk on a Welsh beach, Bonham received a phone call from her hospital informing her she had been allocated to the group of patients that would not be having chemotherapy. "How to describe the initial feeling? Immense relief? Like Christmas? Certainly a mixture of the two," she said.The Future of Personalized Cancer CareToday, Bonham, now 64, retired and living in Cardiff, is free of cancer, healthy and shows no signs of the disease coming back. "It is coming up to nine years since my diagnosis," she said. "I am mindful of my diagnosis, alert to potential changes in my body but do not feel defined by [it]. I walk, enjoy yoga and live well."While not every woman with breast cancer will be able to skip chemotherapy—the treatment remains necessary and important for many—the trial results suggest that genomic testing can safely identify those who can avoid it. This approach represents a significant shift toward personalized medicine in oncology, reducing unnecessary treatment and its associated side effects while maintaining excellent outcomes."I hope that the trial will bring positive patient outcomes to many," Bonham said, reflecting on the potential impact of this research on future breast cancer patients.

Scientists from University College London and partners have proved that a 50‑gene genomic test can reliably pinpoint hormone‑positive breast‑cancer patients who do not need chemotherapy, potentially sparing millions from toxic side‑effects.Optima Trial Demonstrates Genomic Test Can Identify Low‑Risk PatientsThe Optima trial enrolled 4,429 women aged 40+ across the UK, Norway, Sweden, Australia, New Zealand and Thailand. Participants were split into a standard‑care arm (chemotherapy + hormone therapy) and a test‑guided arm where treatment was decided by the genomic score.Trial Numbers Reveal Near‑Identical Survival RatesFive‑year outcomes were strikingly similar:95% of patients receiving chemotherapy remained alive and recurrence‑free.94% of patients who skipped chemotherapy (low‑score group) were also alive and recurrence‑free.The test classified patients using a score derived from the activity of 50 tumour genes, produced by Veracyte's Prosigna assay.These figures indicate that for low‑score patients, chemotherapy adds little or no survival benefit.Potential Shift in Breast Cancer Treatment GuidelinesProf Rob Stein, chief investigator, says the results “address a longstanding challenge” by moving decision‑making from clinical features to tumour biology. Health systems could see reduced drug costs, fewer hospital visits, and a dramatic drop in chemotherapy‑related toxicity.Future Adoption and Healthcare SavingsWith funding from the NIHR, Veracyte and cancer charities, the study paves the way for rapid guideline updates at bodies like ASCO and NICE. Wider implementation could translate into billions of dollars saved globally and improve quality of life for countless patients. Ongoing monitoring will confirm long‑term outcomes, but the early data suggest a new era of personalised, cost‑effective breast‑cancer care.