Top Tweets for #NeoCheckRay
Excited to see our #NeoCheckRay trial published in @NatureMedicine
Proud to have contributed to this multidisciplinary trial exploring whether XRT can help convert immunologically “cold” tumors into a more immune-responsive state in high-risk ER+/HER2− early BC
@OncoAlert

Can neo-adj RT ⚡️ restore response to ICI in PD-L1-neg ER+ breast cancer?
#NeoCheckRay: 3×8 Gy SBRT + anti-PD-L1 showed strong pCR signal in PD-L1 neg . On-treatment biopsies suggest TME reprogramming toward an immune-responsive state.
@NatureMedicine ➡️ https://t.co/hvbDQkvP6q

#NeoCheckRay just published in @NatureMedicine - technically negative.
Easy to scroll past.
Don't.
ER+/HER2− #breastcancer is the most common subtype. Immune-cold. In prior phase III trials, adding immunotherapy to chemotherapy helped, but only in PD-L1-positive tumors. The PD-L1-negative majority, roughly 60% of patients, gained almost nothing.
Neo-CheckRay asked: what if radiation could change that?
Precise stereotactic radiation to the primary tumor ( sparing the lymph nodes) to inflame it, then add a checkpoint inhibitor while the immune system is primed.
The results:
PD-L1-negative: pCR 3.4% → 29%.
25 points in patients assumed to be non-responders.
PD-L1-positive: no difference between arms. Already inflamed?? probably radiation added nothing.
Paired biopsies confirmed it within one week of radiation: cold tumors converting, immune pathways turning on.
Radiation wasn't just treating the tumor. It was creating the conditions immunotherapy needs.
Phase III needed. Survival data pending.
But PD-L1-negative ER+ breast cancer may not be immunotherapy-refractory. It may just need radiation to get there first.
De Caluwé et al. Nature Medicine 2026.
https://t.co/feXMFehWfh
#BreastCancer #BCSM #Immunotherapy #RadiationOncology #NatureMedicine
After the biomarker presentation of KN756 & CM7FL at #SABCS23, no better moment to share the first results of #NeoCheckRay trial testing neoadj IO + RT in high-risk ER+ BC
Safety run-in data now availabe at @jitcancer
Phase 2 recruiting now in 🇧🇪 &🇫🇷
👉https://t.co/K3CYcCOec4

While attending #SABCS23, I am very happy to see the results of the safety run-in of #NeoCheckRay trial published in @jitcancer!
Congrats to @AlexDeCaluwe for leading this study, of great value for patients with luminal B #breastcancer
@OncoAlert
https://t.co/CjXxDCwluT
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