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Related Experiment Videos

[Severe hypertriglyceridemia induced by tamoxifen].

M Taira1, N Takasu, I Komiya

  • 1Second Department of Internal Medicine, Faculty of Medicine, University of the Ryukyus.

Nihon Ronen Igakkai Zasshi. Japanese Journal of Geriatrics
|March 5, 1999
PubMed
Summary

Tamoxifen, used for breast cancer, can cause severe hypertriglyceridemia due to its estrogenic effects. This case highlights the importance of monitoring lipid levels during tamoxifen therapy.

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Area of Science:

  • Endocrinology
  • Oncology
  • Lipid Metabolism

Background:

  • Tamoxifen is a widely used anti-estrogen therapy for estrogen-receptor-positive breast cancer.
  • Patients with a history of diabetes mellitus and hyperlipidemia may be at increased risk for adverse effects.
  • Monitoring metabolic parameters is crucial during adjuvant cancer therapy.

Observation:

  • A 71-year-old woman developed severe hypertriglyceridemia (2,106 mg/dl) during tamoxifen treatment.
  • Discontinuation of tamoxifen led to a significant decrease in serum triglyceride levels.
  • Re-administration of tamoxifen resulted in recurrent hypertriglyceridemia and decreased hepatic triglyceride lipase activity.

Findings:

  • Tamoxifen treatment was associated with increased sex-hormone-binding globulin levels, mimicking estrogenic effects.

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  • The patient's apolipoprotein E phenotype was wild type E3/3.
  • The observed hypertriglyceridemia is attributed to the weak estrogenic activity of tamoxifen.

    • Implications:

    • This case underscores the potential for tamoxifen to induce hypertriglyceridemia through its estrogenic properties.
    • Clinicians should consider monitoring lipid profiles in patients receiving tamoxifen, especially those with pre-existing lipid abnormalities.
    • Understanding tamoxifen's metabolic effects is vital for optimizing breast cancer treatment and patient management.