Abstract
Simple SummaryDiabetes mellitus is a common disease in patients with cancer. It is a risk factor for certain cancers such as pancreatic, liver, colon, breast, and endometrial cancer. Furthermore, several new cancer treatments or the use of steroids may unmask underlying diabetes or aggravate preexisting diabetes. Evidence suggests that patients with cancer and diabetes have higher cancer-related mortality. Moreover, concurrent complications associated with diabetes in patients with cancer may influence the choice of cancer therapy. This review highlights the relationship between diabetes and cancer and various aspects of the management of diabetes in patients with cancer.Background: Diabetes mellitus and cancer are commonly coexisting illnesses, and the global incidence and prevalence of both are rising. Cancer patients with diabetes face unique challenges. This review highlights the relationship between diabetes and cancer and various aspects of the management of diabetes in cancer patients. Methods: A literature search using keywords in PubMed was performed. Studies that were published in English prior to July 2021 were assessed and an overview of epidemiology, cancer risk, outcomes, treatment-related hyperglycemia and management of diabetes in cancer patients is provided. Results: Overall, 8–18% of cancer patients have diabetes as a comorbid medical condition. Diabetes is a risk factor for certain solid malignancies, such as pancreatic, liver, colon, breast, and endometrial cancer. Several novel targeted compounds and immunotherapies can cause hyperglycemia. Nevertheless, most patients undergoing cancer therapy can be managed with an appropriate glucose lowering agent without the need for discontinuation of cancer treatment. Evidence suggests that cancer patients with diabetes have higher cancer-related mortality; therefore, a multidisciplinary approach is important in the management of patients with diabetes and cancer for a better outcome. Conclusions: Future studies are required to better understand the underlying mechanism between the risk of cancer and diabetes. Furthermore, high-quality prospective studies evaluating management of diabetes in cancer patients using innovative tools are needed. A patient-centered approach is important in cancer patients with diabetes to avoid adverse outcomes.
Highlights
Diabetes is a common disease among cancer patients, yet few prospective studies have evaluated its impact on cancer care
Diabetes and hyperglycemia are associated with an elevated risk of developing pancreatic, liver, colorectal, breast, bladder and endometrial cancer, and a lower risk of prostate cancer [3,4,46,47]
This is especially important in patients who have risk factors for diabetes such as a high body mass index (BMI), physical inactivity, a family history of diabetes, and history of gestational diabetes, or those who will be treated with targeted agents that are associated with hyperglycemia
Summary
Diabetes is a common disease among cancer patients, yet few prospective studies have evaluated its impact on cancer care. Several novel cancer therapies or the concurrent use of steroids may unmask underlying diabetes or aggravate preexisting diabetes [5,6,7]. Cancer patients with diabetes may receive suboptimal care that could lead to inferior outcomes [14]. Concurrent complications associated with diabetes such as chronic renal insufficiency, cardiovascular disease, peripheral neuropathy, and chronic infection in diabetic patients may influence the choice of cancer therapy. These factors may limit the use of certain drugs or optimal dosing that may lead to lower benefits and shorter survival. In the context of the current scarcity of literature on diabetes and cancer, this review has been undertaken to provide an overview of the epidemiology, cancer risk, outcomes, cancer treatment-related hyperglycemia and the management of diabetes in cancer patients
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