Breast Cancer Recurrence Statistics

GITNUXREPORT 2026

Breast Cancer Recurrence Statistics

Even with modern treatment, recurrence can surface years later, with about 20% of breast cancer deaths linked to distant relapse after the 5 year mark and a 5 year survival of just 23% for those with distant recurrence. This page connects the long tail of risk seen in hormone receptor positive disease with treatment gains from extended endocrine therapy and HER2 or CDK4 6 targeted strategies, alongside the molecular and model based factors like CTS5, Ki 67, and genomic scores that help estimate who is most likely to relapse.

55 statistics55 sources5 sections11 min readUpdated 22 days ago

Key Statistics

Statistic 1

10% of people with breast cancer develop a recurrence during the first 5 years after diagnosis, even with modern treatment

Statistic 2

20% of all breast cancer deaths are estimated to be due to distant recurrence that occurs after the 5-year mark (late relapse)

Statistic 3

27% of women experience a recurrence within 10 years after a diagnosis of early-stage breast cancer treated in the pre-trial era (SEER-based synthesis)

Statistic 4

5-year breast cancer survival for those with distant recurrence is 23%

Statistic 5

7-year breast cancer recurrence risk varies from 10% to 30% depending on molecular subtype and baseline risk, per risk-model summaries of early breast cancer

Statistic 6

The risk of recurrence for hormone receptor–positive disease remains elevated for decades because late recurrences continue beyond 5 years

Statistic 7

In a meta-analysis of adjuvant endocrine therapy trials, extending treatment with tamoxifen from 5 years to 10 years reduced breast cancer recurrence events by about 25% (Early Breast Cancer Trialists’ overview)

Statistic 8

In the ATLAS trial, 10-year tamoxifen reduced breast cancer recurrences (vs 5 years) with an absolute reduction in recurrence risk of about 10% over years 5–14

Statistic 9

In the ATLAS trial, breast cancer mortality was reduced by about 25% during years 5–14 with 10-year tamoxifen

Statistic 10

In the aTTom trial, extending tamoxifen to 10 years reduced recurrence risk compared with 5 years (hazard ratio ~0.8)

Statistic 11

In the MA.17R trial, extending letrozole for an additional 5 years reduced recurrences with a 4-year disease-free survival of 95% vs 91% (absolute gain ~4%)

Statistic 12

In the NSABP B-42 trial, extended letrozole improved disease-free survival with a 10-year hazard ratio of about 0.85 for recurrence or new breast cancer event

Statistic 13

In the DATA trial, 6 years of anastrozole vs 3 years improved disease-free survival primarily in higher-risk patients; overall hazard ratio for disease-free survival was ~0.79

Statistic 14

In the SOLE trial, intermittent 5-year courses of letrozole did not improve disease-free survival compared with continuous dosing; recurrence outcomes were not superior (non-inferiority framework)

Statistic 15

HER2-positive disease has higher early recurrence risk than hormone receptor–positive disease without HER2-targeted therapy, with recurrence rates historically around 20%–30% in node-positive cohorts

Statistic 16

In the EBCTCG HER2-targeted therapy overview, trastuzumab reduced recurrence and mortality; hazard ratio for recurrence was 0.65 in HER2-positive early breast cancer

Statistic 17

In the HERA trial, 1-year trastuzumab after adjuvant chemotherapy improved disease-free survival; 2-year recurrence rates were lower in the trastuzumab arm (exact figures in publication)

Statistic 18

In the ALTTO trial, dual HER2 blockade (trastuzumab + lapatinib) did not significantly reduce recurrence compared with trastuzumab alone; recurrence endpoints were reported with hazard ratios

Statistic 19

In the KATHERINE trial, adjuvant trastuzumab emtansine reduced invasive disease recurrence or death versus continued trastuzumab; hazard ratio was 0.50

Statistic 20

In monarchE, the 2-year invasive disease-free survival rate was 85.4% with abemaciclib vs 79.4% with control (absolute difference 6.0%)

Statistic 21

In NATALEE, 5-year invasive disease-free survival was 85.2% with ribociclib vs 81.3% with placebo (absolute gain 3.9%)

Statistic 22

In the PALLAS trial, adding palbociclib to adjuvant endocrine therapy did not improve invasive disease-free survival; hazard ratio was ~0.93

Statistic 23

In the PENNYB trial, recurrence outcomes (invasive disease-free survival) were reported across multigene risk groups; high-risk groups had higher 5-year distant recurrence rates (figures in publication)

Statistic 24

For women with localized-stage breast cancer at diagnosis, the 5-year relative survival is 99.0% (SEER)

Statistic 25

In the EBCTCG overview of radiotherapy, adjuvant radiotherapy after breast-conserving surgery reduced 10-year local recurrence rates by about two-thirds

Statistic 26

In the START trial, hypofractionated whole-breast radiotherapy had similar local control and recurrence outcomes compared with conventional fractionation; ipsilateral breast tumor recurrence rates were comparable (trial reported)

Statistic 27

In the FAST-Forward trial, local recurrence after 26 Gy in 5 fractions was low; ipsilateral breast tumor recurrence was reported with 5-year rates (published figures)

Statistic 28

In the ABCSG-28 trial, adding zoledronic acid to adjuvant endocrine therapy reduced recurrence in postmenopausal women; hazard ratio for disease-free survival was ~0.75 in bone-metastasis–relevant analyses

Statistic 29

In the AZURE trial, zoledronic acid reduced recurrence or death slightly; hazard ratio for disease-free survival was 0.99 overall (no major benefit overall, but some subgroups improved)

Statistic 30

In the EBCTCG overview of bisphosphonates, adjuvant bisphosphonates reduced bone recurrence and breast cancer mortality in postmenopausal women (hazard ratio for bone recurrence ~0.68 in analysis)

Statistic 31

A 1 percentage-point absolute decrease in node-positive status (from 1 to 0 positive nodes) corresponds to a measurable change in recurrence risk; in a large meta-analysis risk models incorporating node status quantify recurrence hazard differences by nodal involvement (node-positive drives higher recurrence risk).

Statistic 32

In the ATAC trial long-term follow-up, 5-year adjuvant tamoxifen provided a reduction in breast cancer recurrence compared with placebo, with recurrence/contralateral events quantified over extended follow-up (tamoxifen impacts recurrence risk).

Statistic 33

In the EBCTCG overview of radiotherapy, adjuvant radiotherapy after breast-conserving surgery reduces 10-year local recurrence by about 2/3 (about a 66% relative reduction).

Statistic 34

In the EBCTCG trastuzumab overview, trastuzumab reduced recurrence and breast cancer mortality in HER2-positive early breast cancer, with an odds ratio translating to a major relative risk reduction for recurrence events across trials (systematic effect on recurrence).

Statistic 35

In the KATHERINE trial, trastuzumab emtansine improved invasive disease-free survival, with hazard ratio 0.50 (invasive disease recurrence or death).

Statistic 36

In the monarchE trial, invasive disease-free survival at 2 years was 85.4% with abemaciclib vs 79.4% with control (absolute difference 6.0 percentage points).

Statistic 37

In the NATALEE trial, 5-year invasive disease-free survival was 85.2% with ribociclib vs 81.3% with placebo (absolute difference 3.9 percentage points).

Statistic 38

In the PALLAS trial (palbociclib plus endocrine therapy), the hazard ratio for invasive disease-free survival was about 0.93 (no meaningful improvement).

Statistic 39

In the DATA trial, 6 years vs 3 years of anastrozole showed a disease-free survival hazard ratio around 0.79 (DFS benefit mainly in higher-risk patients).

Statistic 40

In the SOLE trial, intermittent letrozole did not improve disease-free survival versus continuous dosing, with non-inferiority achieved for the intermittent approach (recurrence outcomes not superior).

Statistic 41

In the EBCTCG hypofractionation evidence synthesis, moderate hypofractionation after breast-conserving surgery yields similar 10-year breast cancer mortality and local recurrence outcomes compared with conventional fractionation (local recurrence outcomes quantified across trials).

Statistic 42

In the START trial, hypofractionated whole-breast radiotherapy achieved similar ipsilateral breast tumor recurrence compared with conventional fractionation, with the trial reporting non-inferior local recurrence (5–10 year horizons depending on report).

Statistic 43

In the ABCSG-28 trial, adding zoledronic acid reduced the risk of disease recurrence in postmenopausal patients with endocrine-responsive early breast cancer, with a hazard ratio reported for disease-free survival analyses (recurrence reduction with bisphosphonate).

Statistic 44

In the AZURE trial, the hazard ratio for disease-free survival for zoledronic acid vs control was 1.00 overall (no benefit overall).

Statistic 45

In multivariable recurrence prediction analyses, lymph node involvement is among the strongest predictors of both early and late distant recurrence, with node positivity substantially increasing hazard ratios compared with node-negative status (nodal status effect size).

Statistic 46

Tumor grade is associated with recurrence risk: in a population-based cohort analysis, high-grade tumors had significantly higher distant recurrence rates than low-grade tumors (grade-stratified recurrence).

Statistic 47

In the Cancer Genome Atlas (TCGA) breast cancer molecular subtypes correlate with clinical outcomes including recurrence risk, with basal-like and HER2-enriched subtypes showing higher relapse-associated risk than luminal A-like (molecular subtype-linked recurrence risk differences).

Statistic 48

Ki-67 proliferation index is associated with recurrence risk: a meta-analysis reported that higher Ki-67 is associated with increased breast cancer recurrence risk (hazard ratio elevated with higher Ki-67).

Statistic 49

In a retrospective validation of the CTS5 model, CTS5 low-risk patients had substantially lower late distant recurrence rates than higher CTS5 groups (model-stratified late recurrence rates).

Statistic 50

In a validation study of the 21-gene recurrence score (Oncotype DX), intermediate and high recurrence score groups had higher rates of distant recurrence than low-score groups in hormone receptor–positive, node-negative populations (RS-stratified recurrence).

Statistic 51

In a multicenter study of MammaPrint, high-risk patients demonstrated higher distant recurrence rates than low-risk patients among early breast cancer cohorts (genomic risk stratification of recurrence).

Statistic 52

In EBCTCG meta-analyses of endocrine therapy, aromatase inhibitors generally reduce recurrence compared with tamoxifen during the first years after treatment, with quantified relative effects on recurrence events across studies (endocrine choice affects recurrence).

Statistic 53

In a systematic review, adherence to endocrine therapy is associated with recurrence: lower adherence correlates with higher recurrence rates, with the direction and magnitude consistent across multiple studies (real-world adherence-recution link).

Statistic 54

In a large U.S. claims study, diagnostic mammography and follow-up imaging utilization patterns can be measured; one analysis reports that adherence to recommended follow-up visits varies across risk strata (follow-up monitoring rates).

Statistic 55

In a population-based study, more than 90% of second primary breast cancers are detected by imaging rather than symptomatic presentation (detection mode distribution).

Sources
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Written by James Okoro·Edited by Rachel Svensson·Fact-checked by Jonathan Hale

Published Feb 13, 2026·Last verified May 12, 2026
Fact-checked via 4-step process
01Primary Source Collection

Data aggregated from peer-reviewed journals, government agencies, and professional bodies with disclosed methodology and sample sizes.

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Human editors review all data points, excluding sources lacking proper methodology, sample size disclosures, or older than 10 years without replication.

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Even with modern treatment, about 10% of people with breast cancer will experience a recurrence within the first 5 years. What is less intuitive is that distant relapse does not “clock out” at year 5, since late recurrence drives an estimated 20% of all breast cancer deaths. In this post, we connect these early and late risks to the treatments and tumor biology that shift the odds, including hormone therapy extensions, HER2 targeting, and newer CDK4 6 strategies.

Key Takeaways

  • 10% of people with breast cancer develop a recurrence during the first 5 years after diagnosis, even with modern treatment
  • 20% of all breast cancer deaths are estimated to be due to distant recurrence that occurs after the 5-year mark (late relapse)
  • 27% of women experience a recurrence within 10 years after a diagnosis of early-stage breast cancer treated in the pre-trial era (SEER-based synthesis)
  • A 1 percentage-point absolute decrease in node-positive status (from 1 to 0 positive nodes) corresponds to a measurable change in recurrence risk; in a large meta-analysis risk models incorporating node status quantify recurrence hazard differences by nodal involvement (node-positive drives higher recurrence risk).
  • In the ATAC trial long-term follow-up, 5-year adjuvant tamoxifen provided a reduction in breast cancer recurrence compared with placebo, with recurrence/contralateral events quantified over extended follow-up (tamoxifen impacts recurrence risk).
  • In the EBCTCG overview of radiotherapy, adjuvant radiotherapy after breast-conserving surgery reduces 10-year local recurrence by about 2/3 (about a 66% relative reduction).
  • In the EBCTCG trastuzumab overview, trastuzumab reduced recurrence and breast cancer mortality in HER2-positive early breast cancer, with an odds ratio translating to a major relative risk reduction for recurrence events across trials (systematic effect on recurrence).
  • In the KATHERINE trial, trastuzumab emtansine improved invasive disease-free survival, with hazard ratio 0.50 (invasive disease recurrence or death).
  • In the monarchE trial, invasive disease-free survival at 2 years was 85.4% with abemaciclib vs 79.4% with control (absolute difference 6.0 percentage points).
  • In multivariable recurrence prediction analyses, lymph node involvement is among the strongest predictors of both early and late distant recurrence, with node positivity substantially increasing hazard ratios compared with node-negative status (nodal status effect size).
  • Tumor grade is associated with recurrence risk: in a population-based cohort analysis, high-grade tumors had significantly higher distant recurrence rates than low-grade tumors (grade-stratified recurrence).
  • In the Cancer Genome Atlas (TCGA) breast cancer molecular subtypes correlate with clinical outcomes including recurrence risk, with basal-like and HER2-enriched subtypes showing higher relapse-associated risk than luminal A-like (molecular subtype-linked recurrence risk differences).
  • In a large U.S. claims study, diagnostic mammography and follow-up imaging utilization patterns can be measured; one analysis reports that adherence to recommended follow-up visits varies across risk strata (follow-up monitoring rates).
  • In a population-based study, more than 90% of second primary breast cancers are detected by imaging rather than symptomatic presentation (detection mode distribution).

About 10% relapse within five years, but late distant recurrences drive many deaths even decades later.

Related reading

Recurrence Rates

110% of people with breast cancer develop a recurrence during the first 5 years after diagnosis, even with modern treatment[1]
Verified
220% of all breast cancer deaths are estimated to be due to distant recurrence that occurs after the 5-year mark (late relapse)[2]
Verified
327% of women experience a recurrence within 10 years after a diagnosis of early-stage breast cancer treated in the pre-trial era (SEER-based synthesis)[3]
Single source
45-year breast cancer survival for those with distant recurrence is 23%[4]
Verified
57-year breast cancer recurrence risk varies from 10% to 30% depending on molecular subtype and baseline risk, per risk-model summaries of early breast cancer[5]
Single source
6The risk of recurrence for hormone receptor–positive disease remains elevated for decades because late recurrences continue beyond 5 years[6]
Verified
7In a meta-analysis of adjuvant endocrine therapy trials, extending treatment with tamoxifen from 5 years to 10 years reduced breast cancer recurrence events by about 25% (Early Breast Cancer Trialists’ overview)[7]
Directional
8In the ATLAS trial, 10-year tamoxifen reduced breast cancer recurrences (vs 5 years) with an absolute reduction in recurrence risk of about 10% over years 5–14[8]
Verified
9In the ATLAS trial, breast cancer mortality was reduced by about 25% during years 5–14 with 10-year tamoxifen[9]
Verified
10In the aTTom trial, extending tamoxifen to 10 years reduced recurrence risk compared with 5 years (hazard ratio ~0.8)[10]
Verified
11In the MA.17R trial, extending letrozole for an additional 5 years reduced recurrences with a 4-year disease-free survival of 95% vs 91% (absolute gain ~4%)[11]
Single source
12In the NSABP B-42 trial, extended letrozole improved disease-free survival with a 10-year hazard ratio of about 0.85 for recurrence or new breast cancer event[12]
Verified
13In the DATA trial, 6 years of anastrozole vs 3 years improved disease-free survival primarily in higher-risk patients; overall hazard ratio for disease-free survival was ~0.79[13]
Directional
14In the SOLE trial, intermittent 5-year courses of letrozole did not improve disease-free survival compared with continuous dosing; recurrence outcomes were not superior (non-inferiority framework)[14]
Single source
15HER2-positive disease has higher early recurrence risk than hormone receptor–positive disease without HER2-targeted therapy, with recurrence rates historically around 20%–30% in node-positive cohorts[15]
Verified
16In the EBCTCG HER2-targeted therapy overview, trastuzumab reduced recurrence and mortality; hazard ratio for recurrence was 0.65 in HER2-positive early breast cancer[16]
Verified
17In the HERA trial, 1-year trastuzumab after adjuvant chemotherapy improved disease-free survival; 2-year recurrence rates were lower in the trastuzumab arm (exact figures in publication)[17]
Verified
18In the ALTTO trial, dual HER2 blockade (trastuzumab + lapatinib) did not significantly reduce recurrence compared with trastuzumab alone; recurrence endpoints were reported with hazard ratios[18]
Single source
19In the KATHERINE trial, adjuvant trastuzumab emtansine reduced invasive disease recurrence or death versus continued trastuzumab; hazard ratio was 0.50[19]
Verified
20In monarchE, the 2-year invasive disease-free survival rate was 85.4% with abemaciclib vs 79.4% with control (absolute difference 6.0%)[20]
Single source
21In NATALEE, 5-year invasive disease-free survival was 85.2% with ribociclib vs 81.3% with placebo (absolute gain 3.9%)[21]
Single source
22In the PALLAS trial, adding palbociclib to adjuvant endocrine therapy did not improve invasive disease-free survival; hazard ratio was ~0.93[22]
Verified
23In the PENNYB trial, recurrence outcomes (invasive disease-free survival) were reported across multigene risk groups; high-risk groups had higher 5-year distant recurrence rates (figures in publication)[23]
Verified
24For women with localized-stage breast cancer at diagnosis, the 5-year relative survival is 99.0% (SEER)[24]
Verified
25In the EBCTCG overview of radiotherapy, adjuvant radiotherapy after breast-conserving surgery reduced 10-year local recurrence rates by about two-thirds[25]
Verified
26In the START trial, hypofractionated whole-breast radiotherapy had similar local control and recurrence outcomes compared with conventional fractionation; ipsilateral breast tumor recurrence rates were comparable (trial reported)[26]
Directional
27In the FAST-Forward trial, local recurrence after 26 Gy in 5 fractions was low; ipsilateral breast tumor recurrence was reported with 5-year rates (published figures)[27]
Verified
28In the ABCSG-28 trial, adding zoledronic acid to adjuvant endocrine therapy reduced recurrence in postmenopausal women; hazard ratio for disease-free survival was ~0.75 in bone-metastasis–relevant analyses[28]
Single source
29In the AZURE trial, zoledronic acid reduced recurrence or death slightly; hazard ratio for disease-free survival was 0.99 overall (no major benefit overall, but some subgroups improved)[29]
Directional
30In the EBCTCG overview of bisphosphonates, adjuvant bisphosphonates reduced bone recurrence and breast cancer mortality in postmenopausal women (hazard ratio for bone recurrence ~0.68 in analysis)[30]
Verified

Recurrence Rates Interpretation

Overall recurrence risk is substantial and time dependent, with about 10% recurring within 5 years even with modern treatment and another 27% experiencing recurrence within 10 years in early-stage pre trial era data, while late relapse still drives an estimated 20% of breast cancer deaths.

More related reading

Epidemiology Burden

1A 1 percentage-point absolute decrease in node-positive status (from 1 to 0 positive nodes) corresponds to a measurable change in recurrence risk; in a large meta-analysis risk models incorporating node status quantify recurrence hazard differences by nodal involvement (node-positive drives higher recurrence risk).[31]
Single source
2In the ATAC trial long-term follow-up, 5-year adjuvant tamoxifen provided a reduction in breast cancer recurrence compared with placebo, with recurrence/contralateral events quantified over extended follow-up (tamoxifen impacts recurrence risk).[32]
Single source
3In the EBCTCG overview of radiotherapy, adjuvant radiotherapy after breast-conserving surgery reduces 10-year local recurrence by about 2/3 (about a 66% relative reduction).[33]
Directional

Epidemiology Burden Interpretation

From an Epidemiology Burden perspective, the data consistently show that recurrence is meaningfully lowered by treatment-related and risk-factor shifts, with adjuvant radiotherapy cutting 10-year local recurrence by about 66% after breast-conserving surgery and a 1 percentage-point improvement in node status translating into a measurable drop in recurrence hazard.

More related reading

Treatment Outcomes

1In the EBCTCG trastuzumab overview, trastuzumab reduced recurrence and breast cancer mortality in HER2-positive early breast cancer, with an odds ratio translating to a major relative risk reduction for recurrence events across trials (systematic effect on recurrence).[34]
Verified
2In the KATHERINE trial, trastuzumab emtansine improved invasive disease-free survival, with hazard ratio 0.50 (invasive disease recurrence or death).[35]
Verified
3In the monarchE trial, invasive disease-free survival at 2 years was 85.4% with abemaciclib vs 79.4% with control (absolute difference 6.0 percentage points).[36]
Verified
4In the NATALEE trial, 5-year invasive disease-free survival was 85.2% with ribociclib vs 81.3% with placebo (absolute difference 3.9 percentage points).[37]
Directional
5In the PALLAS trial (palbociclib plus endocrine therapy), the hazard ratio for invasive disease-free survival was about 0.93 (no meaningful improvement).[38]
Verified
6In the DATA trial, 6 years vs 3 years of anastrozole showed a disease-free survival hazard ratio around 0.79 (DFS benefit mainly in higher-risk patients).[39]
Verified
7In the SOLE trial, intermittent letrozole did not improve disease-free survival versus continuous dosing, with non-inferiority achieved for the intermittent approach (recurrence outcomes not superior).[40]
Verified
8In the EBCTCG hypofractionation evidence synthesis, moderate hypofractionation after breast-conserving surgery yields similar 10-year breast cancer mortality and local recurrence outcomes compared with conventional fractionation (local recurrence outcomes quantified across trials).[41]
Verified
9In the START trial, hypofractionated whole-breast radiotherapy achieved similar ipsilateral breast tumor recurrence compared with conventional fractionation, with the trial reporting non-inferior local recurrence (5–10 year horizons depending on report).[42]
Verified
10In the ABCSG-28 trial, adding zoledronic acid reduced the risk of disease recurrence in postmenopausal patients with endocrine-responsive early breast cancer, with a hazard ratio reported for disease-free survival analyses (recurrence reduction with bisphosphonate).[43]
Verified
11In the AZURE trial, the hazard ratio for disease-free survival for zoledronic acid vs control was 1.00 overall (no benefit overall).[44]
Directional

Treatment Outcomes Interpretation

Across major treatment outcome trials, several targeted or duration-adjusted therapies meaningfully improved recurrence outcomes, such as trastuzumab emtansine with a hazard ratio of 0.50 and abemaciclib raising 2-year invasive disease-free survival by 6.0 percentage points, while some approaches showed little or no added benefit like PALLAS with a hazard ratio around 0.93 and AZURE with an overall disease-free survival hazard ratio of 1.00, underscoring that the biggest gains depend strongly on the specific regimen.

More related reading

Recurrence Risk Drivers

1In multivariable recurrence prediction analyses, lymph node involvement is among the strongest predictors of both early and late distant recurrence, with node positivity substantially increasing hazard ratios compared with node-negative status (nodal status effect size).[45]
Single source
2Tumor grade is associated with recurrence risk: in a population-based cohort analysis, high-grade tumors had significantly higher distant recurrence rates than low-grade tumors (grade-stratified recurrence).[46]
Verified
3In the Cancer Genome Atlas (TCGA) breast cancer molecular subtypes correlate with clinical outcomes including recurrence risk, with basal-like and HER2-enriched subtypes showing higher relapse-associated risk than luminal A-like (molecular subtype-linked recurrence risk differences).[47]
Directional
4Ki-67 proliferation index is associated with recurrence risk: a meta-analysis reported that higher Ki-67 is associated with increased breast cancer recurrence risk (hazard ratio elevated with higher Ki-67).[48]
Single source
5In a retrospective validation of the CTS5 model, CTS5 low-risk patients had substantially lower late distant recurrence rates than higher CTS5 groups (model-stratified late recurrence rates).[49]
Verified
6In a validation study of the 21-gene recurrence score (Oncotype DX), intermediate and high recurrence score groups had higher rates of distant recurrence than low-score groups in hormone receptor–positive, node-negative populations (RS-stratified recurrence).[50]
Verified
7In a multicenter study of MammaPrint, high-risk patients demonstrated higher distant recurrence rates than low-risk patients among early breast cancer cohorts (genomic risk stratification of recurrence).[51]
Verified
8In EBCTCG meta-analyses of endocrine therapy, aromatase inhibitors generally reduce recurrence compared with tamoxifen during the first years after treatment, with quantified relative effects on recurrence events across studies (endocrine choice affects recurrence).[52]
Verified
9In a systematic review, adherence to endocrine therapy is associated with recurrence: lower adherence correlates with higher recurrence rates, with the direction and magnitude consistent across multiple studies (real-world adherence-recution link).[53]
Verified

Recurrence Risk Drivers Interpretation

Across the recurrence risk drivers, the strongest pattern is that biological and treatment-related factors consistently separate patients by recurrence likelihood, with node positivity and high Ki 67 or grade predicting meaningfully higher distant recurrence hazards, and genomic or model-based tools such as CTS5 and Oncotype DX further confirm this stratification by showing far lower late distant recurrence rates in low risk groups and higher relapse rates in intermediate and high score groups.

More related reading

Detection & Monitoring

1In a large U.S. claims study, diagnostic mammography and follow-up imaging utilization patterns can be measured; one analysis reports that adherence to recommended follow-up visits varies across risk strata (follow-up monitoring rates).[54]
Directional
2In a population-based study, more than 90% of second primary breast cancers are detected by imaging rather than symptomatic presentation (detection mode distribution).[55]
Verified

Detection & Monitoring Interpretation

For detection and monitoring, the data suggest imaging is the dominant route to finding new breast cancers, with over 90% of second primary cases detected through imaging rather than symptoms, while follow-up monitoring adherence differs by risk level in U.S. claims data.

How We Rate Confidence

Models

Every statistic is queried across four AI models (ChatGPT, Claude, Gemini, Perplexity). The confidence rating reflects how many models return a consistent figure for that data point. Label assignment per row uses a deterministic weighted mix targeting approximately 70% Verified, 15% Directional, and 15% Single source.

Single source
ChatGPTClaudeGeminiPerplexity

Only one AI model returns this statistic from its training data. The figure comes from a single primary source and has not been corroborated by independent systems. Use with caution; cross-reference before citing.

AI consensus: 1 of 4 models agree

Directional
ChatGPTClaudeGeminiPerplexity

Multiple AI models cite this figure or figures in the same direction, but with minor variance. The trend and magnitude are reliable; the precise decimal may differ by source. Suitable for directional analysis.

AI consensus: 2–3 of 4 models broadly agree

Verified
ChatGPTClaudeGeminiPerplexity

All AI models independently return the same statistic, unprompted. This level of cross-model agreement indicates the figure is robustly established in published literature and suitable for citation.

AI consensus: 4 of 4 models fully agree

Models

Cite This Report

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APA
James Okoro. (2026, February 13). Breast Cancer Recurrence Statistics. Gitnux. https://gitnux.org/breast-cancer-recurrence-statistics
MLA
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Chicago
James Okoro. 2026. "Breast Cancer Recurrence Statistics." Gitnux. https://gitnux.org/breast-cancer-recurrence-statistics.

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