Abstract
Background: The U.S. Hispanic/Latino population is heterogeneous both socioculturally and by the proportion of European, Indigenous American, and African ancestry of the regions from which individuals originate. A previous study reported that genetic ancestry was associated with breast cancer survival among Latinas, independent of sociodemographic and tumor characteristics, suggesting that a genetic factor associated with ancestry may affect breast cancer survival. Methods: We evaluated the association of genetic ancestry with breast cancer outcomes among 506 Latina women with invasive breast cancer in the Pathways Study, a cohort study within Kaiser Permanente, an integrated health care delivery system. Proportional hazards models were used to assess the effect of ancestry on breast cancer recurrence (53 events), breast cancer-specific mortality (31 events) and all-cause mortality (54 events), with a mean follow-up time of 6 years. Results: Indigenous American ancestry was not associated with breast cancer recurrence [HR = 1.00 per 10% increase; 95% confidence interval (CI), 0.86-1.16], breast cancer mortality (HR = 0.95; 95% CI, 0.77-1.17), or all-cause mortality (HR = 0.93; 95% CI, 0.80-1.08). Adjustment for sociodemographic variables, tumor characteristics, and treatment did not alter the associations. Conclusions: Our results suggest that previously reported differences in breast cancer survival by genetic ancestry may be overcome by improving health care access and/or quality. Impact: Improving health care access and quality may reduce breast cancer disparities among U.S. Latinas.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1466-1469 |
| Number of pages | 4 |
| Journal | Cancer Epidemiology Biomarkers and Prevention |
| Volume | 26 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 1 2017 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Epidemiology
- Oncology
Cite this
Genetic ancestry is not associated with breast cancer recurrence or survival in U.S. latina women enrolled in the kaiser permanente pathways study. / Engmann, Natalie J.; Ergas, Isaac J.; Yao, Song; Kwan, Marilyn L.; Roh, Janise M.; Ambrosone, Christine B.; Kushi, Lawrence H.; Fejerman, Laura.
In: Cancer Epidemiology Biomarkers and Prevention, Vol. 26, No. 9, 01.09.2017, p. 1466-1469.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Genetic ancestry is not associated with breast cancer recurrence or survival in U.S. latina women enrolled in the kaiser permanente pathways study
AU - Engmann, Natalie J.
AU - Ergas, Isaac J.
AU - Yao, Song
AU - Kwan, Marilyn L.
AU - Roh, Janise M.
AU - Ambrosone, Christine B.
AU - Kushi, Lawrence H.
AU - Fejerman, Laura
PY - 2017/9/1
Y1 - 2017/9/1
N2 - Background: The U.S. Hispanic/Latino population is heterogeneous both socioculturally and by the proportion of European, Indigenous American, and African ancestry of the regions from which individuals originate. A previous study reported that genetic ancestry was associated with breast cancer survival among Latinas, independent of sociodemographic and tumor characteristics, suggesting that a genetic factor associated with ancestry may affect breast cancer survival. Methods: We evaluated the association of genetic ancestry with breast cancer outcomes among 506 Latina women with invasive breast cancer in the Pathways Study, a cohort study within Kaiser Permanente, an integrated health care delivery system. Proportional hazards models were used to assess the effect of ancestry on breast cancer recurrence (53 events), breast cancer-specific mortality (31 events) and all-cause mortality (54 events), with a mean follow-up time of 6 years. Results: Indigenous American ancestry was not associated with breast cancer recurrence [HR = 1.00 per 10% increase; 95% confidence interval (CI), 0.86-1.16], breast cancer mortality (HR = 0.95; 95% CI, 0.77-1.17), or all-cause mortality (HR = 0.93; 95% CI, 0.80-1.08). Adjustment for sociodemographic variables, tumor characteristics, and treatment did not alter the associations. Conclusions: Our results suggest that previously reported differences in breast cancer survival by genetic ancestry may be overcome by improving health care access and/or quality. Impact: Improving health care access and quality may reduce breast cancer disparities among U.S. Latinas.
AB - Background: The U.S. Hispanic/Latino population is heterogeneous both socioculturally and by the proportion of European, Indigenous American, and African ancestry of the regions from which individuals originate. A previous study reported that genetic ancestry was associated with breast cancer survival among Latinas, independent of sociodemographic and tumor characteristics, suggesting that a genetic factor associated with ancestry may affect breast cancer survival. Methods: We evaluated the association of genetic ancestry with breast cancer outcomes among 506 Latina women with invasive breast cancer in the Pathways Study, a cohort study within Kaiser Permanente, an integrated health care delivery system. Proportional hazards models were used to assess the effect of ancestry on breast cancer recurrence (53 events), breast cancer-specific mortality (31 events) and all-cause mortality (54 events), with a mean follow-up time of 6 years. Results: Indigenous American ancestry was not associated with breast cancer recurrence [HR = 1.00 per 10% increase; 95% confidence interval (CI), 0.86-1.16], breast cancer mortality (HR = 0.95; 95% CI, 0.77-1.17), or all-cause mortality (HR = 0.93; 95% CI, 0.80-1.08). Adjustment for sociodemographic variables, tumor characteristics, and treatment did not alter the associations. Conclusions: Our results suggest that previously reported differences in breast cancer survival by genetic ancestry may be overcome by improving health care access and/or quality. Impact: Improving health care access and quality may reduce breast cancer disparities among U.S. Latinas.
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U2 - 10.1158/1055-9965.EPI-17-0148
DO - 10.1158/1055-9965.EPI-17-0148
M3 - Article
AN - SCOPUS:85028909627
VL - 26
SP - 1466
EP - 1469
JO - Cancer Epidemiology Biomarkers and Prevention
JF - Cancer Epidemiology Biomarkers and Prevention
SN - 1055-9965
IS - 9
ER -