08/26/2026
Pregnancy After Breast Cancer:
The Data Has Caught Up 🌷
Breast cancer can interrupt the path to motherhood — but for many, it doesn't have to end it. And now we have longer-term data to back that up.
📌 The POSITIVE trial followed women with HR+ breast cancer who paused endocrine therapy to try for pregnancy. The newest results (2026, ~6 years of follow-up) show recurrence rates were essentially the same as women who didn't pause therapy — 12.3% vs 13.2%. This isn't just short-term reassurance anymore; it holds up years later.
💗 Even more compelling: among women who wanted to conceive, those who actually got pregnant did just as well — if not slightly better — than those who didn't. That's strong evidence pregnancy itself isn't fueling recurrence.
🌱 Also reassuring: most women whose periods stopped during treatment got them back within 6 months of pausing therapy — good news for those wondering if their fertility will return at all.
⚕️ None of this means "one size fits all." The right path still depends on your age, diagnosis, treatment history, recurrence risk, and personal goals — which is why this needs to be a real conversation with your oncology team, not a decision made alone.
💬 The takeaway: the data keeps getting stronger. If motherhood after breast cancer is something you want, that conversation is worth having.
Reference Links & Data Sources
* Primary Trial Publication (Initial Results):
* New England Journal of Medicine: Interrupting Endocrine Therapy to Attempt Pregnancy in Breast Cancer(Partridge et al., 2023)
* Longer-Term Follow-Up Data (~6 Years / 71-Month Analysis):
* The ASCO Post: POSITIVE Trial Update: Oncologic Outcomes Maintained After Pausing Endocrine Therapy for Pregnancy
* Clinical Oncology: 5-Year POSITIVE Data Reassure on Pregnancy in Breast Cancer
* Trial Protocol & Network:
* Alliance for Clinical Trials in Oncology: POSITIVE Study Results Announcement