Statins impair antitumor effects of rituximab by inducing conformational changes of CD20
2008

Statins Reduce the Effectiveness of Rituximab in Treating B Cell Lymphomas

Sample size: 5 publication 10 minutes Evidence: moderate

Author Information

Author(s): Winiarska Magdalena, Bil Jacek, Wilczek Ewa, Wilczynski Grzegorz M, Lekka Malgorzata, Engelberts Patrick J, Mackus Wendy J. M, Gorska Elzbieta, Bojarski Lukasz, Stoklosa Tomasz, Nowis Dominika, Kurzaj Zuzanna, Makowski Marcin, Glodkowska Eliza, Issat Tadeusz, Mrowka Piotr, Lasek Witold, Dabrowska-Iwanicka Anna, Basak Grzegorz W, Wasik Maria, Warzocha Krzysztof, Sinski Maciej, Gaciong Zbigniew, Jakobisiak Marek, Parren Paul W. H. I, Golab Jakub

Primary Institution: Medical University of Warsaw

Hypothesis

Do statins impair the effectiveness of rituximab in killing B cell lymphomas?

Conclusion

Statins significantly decrease the effectiveness of rituximab by altering the conformation of CD20 on B cell lymphomas.

Supporting Evidence

  • Statins were found to significantly decrease rituximab-mediated complement-dependent cytotoxicity.
  • Short-term atorvastatin treatment in patients led to reduced anti-CD20 binding.
  • Cholesterol depletion impaired the binding of anti-CD20 antibodies to lymphoma cells.

Takeaway

Statins, which lower cholesterol, can make a cancer treatment called rituximab less effective by changing how a protein on cancer cells looks.

Methodology

The study used various assays to measure the effects of statins on rituximab-mediated cytotoxicity in B cell lymphoma cells.

Potential Biases

Potential bias due to the small number of patients and the specific conditions under which the study was conducted.

Limitations

The study was limited to a small sample size and focused on specific statins.

Participant Demographics

Five patients with hypercholesterolemia, otherwise healthy.

Statistical Information

P-Value

p<0.01

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1371/journal.pmed.0050064

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