for people ages 18 years and up (full criteria)
at Clovis, California
study started
completion around
Principal Investigator



The use of monoclonal antibodies (MA) either alone or as part of chemoimmunotherapy in oncology, benign and malignant hematology is expanding. Of the 17 therapeutic MAs approved in 2017 by FDA, 50% of them are indicated for hematologic and oncologic condition. With increasing number of approved agents, therapeutic MAs have become one of the fastest growing areas in the management of benign and malignant hematologic condition. Advancement of recombinant technology allows development of partially or fully humanized new agents. Despite this, they still carry significant risk of immune and non-immune mediated adverse events. Most of the therapeutic monoclonal antibody related adverse events (MCAAE) The severity of reaction is variable, ranging from mild involvement of single organ to severe and life-threatening reactions requiring hospitalization or even resulting in death.

Even for mild infusion reactions, where re-initiation of infusion is possible, there is resultant delay in delivery of infusions, distress to patients, and additional utilization of health care resources.

Due to unpredictability of standard infusion reaction (SIR), efforts have been focused on premedication to decreasing the incidence and severity of infusion reaction. Most institutions have protocols using corticosteroid, acetaminophen and antihistamine as part of their premedication protocols. This has reduced but not eliminated standard infusion reactions. Most recently, mast cell stabilizers are being added to standard protocols to further reduce the incidence and severity of standard infusion reactions with variable anecdotal success without formal study. Of all the monoclonal antibodies, only Daratumumab has been evaluated using this strategy.

This study seeks to evaluate the efficacy of mast cell stabilizer Montelukast (SINGULAIR) 10 mg in decreasing the SIR in patients receiving therapeutic MAs either alone or as part of chemoimmunotherapy in hematologic condition. The MAs being studied includes: Blinatumomab (BLINCYTO, Amgen Inc.), Daratumumab (DARZALEX, Janssen Biotech, Inc.), Elotuzumab (EMPLICIT, Bristol-Myers Squibb Company), Gemtuzumab (MYLOTARG, Pfizer Inc.), Obinutuzumab (GAZYVA, Genentech USA, Inc.), and Rituximab (RITUXAN, Genentech US); The investigators postulate that 10 mg of Montelukast, when given in addition to standard premedication, will lead to decrease in incidence of MA associated SIR, shorter infusion time and decrease use of additional health care resources

Official Title

A Phase II Study, Evaluating the Efficacy of Montelukast in Reducing the Incidence and Severity of Monoclonal Antibodies Associated Infusion Reactions


Study design:

This is a Phase II single arm open label study evaluating 10 mg Montelukast given at least 2 hours prior to infusion of monoclonal antibody in addition to standard premedication. Monoclonal antibodies being evaluated include those commonly used to treat hematologic and oncologic malignancies like (Blinatumomab, Daratumumab, Elotuzumab, Gemtuzumab, Obinutuzumab, and Rituximab).

Arms/Intervention; Study subjects will be given 10 mg of Montelukast to be orally self-administered at least 2 hours prior to beginning of chemotherapy section Standard premedication will be administered according to institution protocol


Infusion Reaction, Monoclonal Antibody, Montelukast, Montelukast 10 Mg Oral Tablet, Montelukast (Singulair)


You can join if…

Open to people ages 18 years and up

  1. Patients must be at least 18 years.
  2. Able to provide consent for study participation (English and Spanish).
  3. Patients with hematologic disorders or malignancies starting on any of the following monoclonal antibodies alone or in combination with chemotherapy (Blinatumomab, Daratumumab, Elotuzumab, Gemtuzumab, Obinutuzumab, and Rituximab).
  4. Able to tolerate leukotriene antagonist including Montelukast.
  5. Able to tolerate oral intake.
  6. Available for follow up by phone and on site.

You CAN'T join if...

  1. Patients undergoing treatment with above monoclonal antibodies for indications other than stated in above eligibility criteria.
  2. Patients who cannot provide informed consent in English or Spanish.
  3. Patients taking Montelukast or other leukotriene antagonists for other indications at the time of screening.
  4. Known allergic reactions to Montelukast or other leukotriene inhibitors.
  5. On monoclonal antibodies other than the ones being studied (Blinatumomab, Daratumumab, Elotuzumab, Gemtuzumab, Obinutuzumab, and Rituximab).
  6. History of uncontrolled depression or suicidal ideation or psychiatric illness.
  7. Known Severe Hepatic Impairment (AST>10x ULN; ALT>10x ULN; ALP>10x ULN; and/or Bilirubin >5x ULN).
  8. Patient with eosinophilic vasculitis.
  9. Unable to comply with phone or in person follow-up.

    10. Patients participating in another clinical trial. 11. Pregnancy


  • Community Cancer Institute accepting new patients
    Clovis California 93611 United States

Lead Scientist at UCSF

    Mohammad Sani Bukari, M.D,Assistant Clinical Professor, UCSF Fresno, Department of Medicine, Division of Hematology and Oncology. Residency (Internal Medicine/Pediatrics) Fellowship( Hematology and Oncology) in Wayne State University/Detroit Medical Center/Karmanos Cancer Institute.


accepting new patients
Start Date
Completion Date
University of California, San Francisco
Phase 2 research study
Study Type
Expecting 80 study participants
Last Updated