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A Retrospective Analysis: Montelukast Prophylaxis to Support Patient-Centered Oncology Care

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Infusion-related reactions remain a concern with initial rituximab treatment, even with standard premedications. In a retrospective study of 106 patients across Texas Oncology sites, adding montelukast was associated with a significantly lower rate of reactions: 13% compared with 40.4% among patients receiving standard premedications alone.

The article explores these findings alongside practical considerations for prescribing, patient counseling, and dosing, as well as study limitations and questions for future research. Read the full analysis below.

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Siân Behrendt-McLeroy, PharmD, MS, is a Clinical Oncology Pharmacist, and Brandon Dyson, PharmD, BCOP, BCPS, is Director of Pharmacy Education at Texas Oncology in Austin, Texas. Jacob Enis, PharmD, is Pharmacy Manager at Texas Oncology South Austin in Austin, Texas. Urooj Iqbal, PharmD, BCOP, is Pharmacy Review Team Supervisor at Texas Oncology in Dallas, Texas.

 

1. RITUXAN® [rituximab] prescribing information. South San Francisco, CA: Genentech; 2021. [Internet. Accessed January 26, 2026.] Available from: https://www.gene.com/download/pdf/ rituxan_prescribing.pdf.

2. Paul F, Cartron G. Infusion-related reactions to rituximab: frequency, mechanisms and predictors. Expert Rev Clin Immunol. 2019;15(4):383- 389. doi:10.1080/1744666X.2019.1562905.

3. Salles G, Barrett M, Foà R, et al. Rituximab in B-Cell Hematologic Malignancies: A Review of 20 Years of Clinical Experience. Adv Ther. 2017;34(10):2232- 2273. doi:10.1007/s12325-017-0612-x.

4. Amatto L, Yacyshyn E. Montelukast as a Rescue and Premedication for Rituximab Infusion Reactions. J Rheumatol. 2024;51(8):837. Published 2024 Aug 1. doi:10.3899/ jrheum.2024-0116.

5. Crespo A, Forbes L, Gallo-Hershberg D, et al. Management of cancer medication related infusion reactions. Cancer Care Ontario; 2019. [Internet. Accessed March 2, 2026.] Available from: https:// www.cancercareontario.ca/sites/ ccocancercare/files/guidelines/full/ ManagementCancerMedicationRelatedInfusionReactions.pdf.

6. Kotchetkov R, McLean J, Gerard L, Nay D, Hopkins SP. Effect of montelukast and rupatadine on rituximab infusion time, rate, severity of reactions, and cost of administration. J Clin Oncol. 2019; 37: 6500-6500. doi: 10.1200/ JCO.2019.37.15_suppl.6500.

7. Kotchetkov R, McLean J, Nay D, Gerard L, Hopkins S, Didiodato G. Premedication with montelukast and rupatadine decreased rituximab infusion time, rate, severity of reactions and use of rescue medications. Int J Cancer. 2020;147(7):1979-1986. doi:10.1002/ijc.32985.

8. Chari A, Lonial S, Mark TM, et al. Results of an early access treatment protocol of daratumumab in United States patients with relapsed or refractory multiple myeloma. Cancer. 2018;124(22):4342-4349. doi:10.1002/cncr.31706

9. Breslow R, Caiado J, Castells M. Acetylsalicylic acid and montelukast block mast cell mediator– related symptoms during rapid desensitization. Ann Allergy Asthma Immunol. 2009; 102:155-60.

10. SINGULAIR (montelukast sodium) tablets, chewable tablets, oral granules. Prescribing information. Merck Sharp & Dohme Corp; 2020. [Internet. Accessed September 18, 2026.] https://www.fda.gov/drugsatfda

11. US Food and Drug Administration. FDA requires Boxed Warning about serious mental health side effects for asthma and allergy drug montelukast (Singulair); advises restricting use for allergic rhinitis. FDA Drug Safety Communication. March 4, 2020. [Internet. Accessed September 18, 2026.] https://www.fda.gov/drugs/ drug-safety-communications/fda-requires-boxed-warning-about-serious-mental-health-side-effects-asthma-and-allergy-drug

12. Mahmood O, Leung C, Tohan P et al. Evaluating the efficacy of montelukast in reducing the incidence and severity of monoclonal antibodies-associated infusion reactions (Phase II Study). Blood 2025; 146 (Supplement 1): 6196. doi: https://doi.org/10.1182/blood-2025-6196.

13. Numiqo Team (2026). numiqo: Online Statistics Calculator. numiqo e.U. Graz, Austria. [Accessed March 6, 2026] URL https://numiqo.com.