Cited by 37Metabolism, Diabetes, and CancerPI3K/AKT/mTOR signaling in cancerAdvanced Breast Cancer Therapies

Management of phosphatidylinositol-3-kinase inhibitor-associated hyperglycemia

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Goncalves, Marcus D., Farooki, Azeez·2022·Integrative Cancer Therapies

Abstract

Phosphatidylinositol-3-kinase (PI3K) pathway hyperactivation has been associated with the development of cancer and treatment resistance. PI3K inhibitors are now used to treat hormone receptor-positive (HR+), human epidermal growth factor receptor-2–negative (HER2−), PIK3CA-mutated advanced breast cancer. Hyperglycemia, a frequently observed adverse event with PI3K inhibitors (PI3Ki), is regarded as an on-target effect because inhibition of the PI3K pathway has been shown to decrease glucose transport and increase glycogenolysis and gluconeogenesis. PI3Ki-induced hyperglycemia results in a compensatory increase in insulin release, which has been shown to reduce the efficacy of treatment by reactivating the PI3K pathway in preclinical models. Patients with an absolute or relative deficiency in insulin, and those with insulin resistance or pancreatic dysfunction, may experience exacerbated or prolonged hyperglycemia. Therefore, the effective management of PI3Ki-associated hyperglycemia depends on early identification of patients at risk, frequent monitoring to allow prompt recognition of hyperglycemia and its sequelae, and initiating appropriate management strategies. Risk factors for the development of hyperglycemia include older age (≥75 years), overweight/obese at baseline, and family history of diabetes. Consultation with an endocrinologist is recommended for patients considered high risk. The management of PI3Ki-induced hyperglycemia requires an integrative approach that combines diets low in carbohydrates and glucose-lowering medications. Medications that do not affect the PI3K pathway are preferred as the primary and secondary agents for the management of hyperglycemia. These include metformin, sodium-glucose co-transporter 2 inhibitors, thiazolidinediones, and α-glucosidase inhibitors. Insulin should only be considered as a last-line agent for PI3Ki-associated hyperglycemia due to its stimulatory effect of PI3K signaling. Clinical studies show that alpelisib-associated hyperglycemia is reversible and manageable, rarely leading to treatment discontinuation. Management of PI3Ki-associated hyperglycemia in patients with breast cancer should focus on the prevention of acute and subacute complications of hyperglycemia, allowing patients to remain on anticancer treatment longer.

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  • Insulin can reactivate the PI3K pathway, negating the effects of alpelisib.

    “Insulin and sulfonylureas should be considered last-line agents, as insulin can reactivate the PI3K pathway, negating the effects of alpelisib (223,224).”

    From 9. Pharmacologic Approaches to Glycemic Treatment: Standards of Care in Diabetes—2025 (2025) · cites this paper as [224]

    The “Insulin as Last Line of Therapy” section says insulin can partially reactivate the PI3K pathway despite PI3K-inhibitor treatment. The Concluding Remarks say insulin may theoretically curb antitumor activity; the paper does not say it negates alpelisib’s effects. Page numbers were not available in our copy. (LLM, conf=0.88)

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Cited by

Sorted by citations

Authors
Goncalves, M. D., & Farooki, A.
Affiliations
  • Weill Cornell Medicine (US)
  • Memorial Sloan Kettering Cancer Center (US)
Corresponding author
Goncalves, Marcus D.
Venue
Integrative Cancer Therapies
Published
2022-01
Volume
21
Pages
15347354211073163-15347354211073163
ISSN
  • 1534-7354 (ISSN-L)
  • 1552-695X
OpenAlex
W4210528495
Cited by
37
References
8
Citations by year
2026: 14 · 2025: 9 · 2024: 10 · 2023: 4
FWCI
1.88
Type
journal article
Language
en
Open access
Locations
  • Integrative Cancer Therapies (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Novartis Pharmaceuticals Corporation
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Advanced Breast Cancer Therapies
Keywords
PI3K inhibitors, hyperglycemia, alpelisib, breast cancer, hyperglycemia management, insulin resistance, metformin, SGLT2 inhibitors, thiazolidinediones, alpha-glucosidase inhibitors, insulin therapy, risk factors, adverse drug reactions, glucose-lowering medications
MeSH terms
Phosphoinositide-3 Kinase Inhibitors, Breast Neoplasms, Female, Glucose, Humans, Hyperglycemia, Insulin, Phosphatidylinositol 3-Kinases

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