Category: Latest Research

  • Navigating DCIS Outside the Traditional Path: Insights from a New Study

    A newly published study in Sociology of Health & Illness explores how some women diagnosed with ductal carcinoma in situ (DCIS) are navigating their diagnosis outside the traditional treatment pathway. Rather than following standard-of-care approaches such as surgery or radiation, these women are turning to an online community to help make sense of their diagnosis, weigh treatment decisions, and find support. The study offers a window into how patients understand risk, interact with the medical system, and navigate uncertainty in the absence of clear answers.

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  • DCIS Understood at RISE UP: Prevention, Possibility, and Reimagining Breast Cancer Care

    Last month, DCIS Understood had the honor of attending—and presenting at—the RISE UP (Revolutionizing Investigations to StEp Up Prevention) for Breast Cancer and Women’s Health conference hosted by UCSF. RISE UP is not a typical breast cancer conference. Its focus extends beyond treatment into prevention, early intervention, equity, innovation, and women’s health more broadly. The unifying message throughout the program was clear: we must think earlier, think differently, and think more holistically about breast cancer care. That framing could not be more relevant to DCIS.

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  • Is Tamoxifen Alone Without Surgery a Viable Strategy for Low-Risk DCIS?: Updates From the LORETTA Trial

    In December 2025, results from the LORETTA trial were presented at the San Antonio Breast Cancer Symposium (SABCS), offering new insight into an important and long-standing question in DCIS care: Can some people with low-risk DCIS safely avoid surgery?

    While the trial did not meet its predefined statistical threshold, the findings add meaningful evidence to the growing body of research suggesting that active surveillance may be appropriate for carefully selected patients. Importantly, the results help clarify who those patients might be.

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  • New DCIS Radiation Findings Presented at SABCS: What High Risk Patients Should Know

    At the San Antonio Breast Cancer Symposium (SABCS) in December, researchers presented updated results from a large international clinical trial examining radiation treatment after surgery for ductal carcinoma in situ (DCIS). The study offers important insights into how radiation can reduce the chance of DCIS returning in the same breast — particularly for people considered at higher risk of recurrence.

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  • Reflections from the 2025 San Antonio Breast Cancer Symposium

    Last week, DCIS Understood had the opportunity to attend the San Antonio Breast Cancer Symposium (SABCS) — one of the world’s most important gatherings dedicated to breast cancer research and care. We returned feeling energized, inspired, and deeply grateful to be part of a global community working toward better outcomes and more thoughtful, patient-centered care.

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  • Can Biopsy Alone Help Identify Which DCIS Is Truly “Low Risk”?

    For many women diagnosed with DCIS, one of the toughest questions is whether surgery is truly necessary — especially if the DCIS looks low-risk. The idea of active monitoring (close follow-up with imaging and exams, without immediate surgery) is gaining attention in clinical trials. But one challenge remains: how can doctors be sure a biopsy really shows the whole truth about the DCIS?

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  • Polygenic Risk Score May Help Personalize Risk Prediction for DCIS and LCIS

    When someone is diagnosed with ductal carcinoma in situ (DCIS) or lobular carcinoma in situ (LCIS), one of the toughest questions is: What happens next? Not all in situ lesions progress to invasive cancer, yet many people feel pressure to treat aggressively for fear of missing something.

    A new study from the American Association for Cancer Research suggests a promising—but still tentative—tool: a polygenic risk score (PRS), a number based on hundreds of inherited genetic variants. This approach may someday help personalize risk predictions for future breast events after an in situ diagnosis.

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  • Are Death Rates from Breast Cancer After Initial DCIS Diagnosis Going Down? A New Study Raises Questions

    When we talk about progress in breast cancer, we often point to the encouraging news that deaths from invasive breast cancer have steadily declined over recent decades—thanks to advances in detection, treatment and care.

    But for DCIS, there is weak or even no evidence that our current treatments actually reduce the chance of dying from breast cancer.  A new study published in Breast Cancer Research looked closely at this question, and the results raise important concerns.

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  • A New Clue to Why Some DCIS Becomes Invasive Cancer

    One of the biggest questions for people diagnosed with DCIS is: which cases will stay harmless inside the milk ducts, and which ones will progress to invasive breast cancer?

    A new study from researchers in Finland and Sweden offers an important piece of this puzzle. They discovered that a protein called HSF2 may act like a “switch” that helps determine whether cells stay put in the ducts or begin invading surrounding breast tissue.

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