Exploring the association between diabetes and breast cancer morbidity: considerations for quality care improvements among Latinas.

objectiveCancer and diabetes are two severe chronic illnesses that often co-occur. In cancer patients, diabetes increases the risk for treatment complexities and mortality. Yet patient-reported outcomes with co-occurring chronic illness are understudied.

designThis preliminary study investigated the association of diabetes with breast cancer-related morbidity among underserved Latina breast cancer survivors (BCS).

participants137 Latina BCS were recruited from the California Cancer Registry and hospitals.Setting and Main Outcome Measure(s): BCS completed a self-administered mailed questionnaire assessing demographic and medical characteristics e.g. Type2 diabetes mellitus (T2DM).

results28% Latina BCS reported co-occurring T2DM at twice the general population rate. Diabetes was most prevalent among Latina BCS > 65 years (43%). Latina BCS with diabetes were more likely to report advanced cancer staging at diagnosis (P = 0.036) and more lymphedema symptoms (P = 0.036). Results suggest non-significant but lower general health and greater physical functioning limitations among BCS with T2DM.

conclusionsThis study has relevance for precision population medicine by (i) consideration of routine diabetes screening in Latina BCS, (ii) underscoring attention to disease co-occurrence in treatment planning and care delivery and (iii) informing follow-up care and survivorship care planning e.g. patient self-management, oncology and primarily care surveillance and specialty care. Our findings can inform providers, survivors and caregivers about the impact of disease co-occurrence that influence clinically and patient responsive care for both initial treatment and long-term follow-up care to address disparities.