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Off-the-Shelf Immune Drug Shows Promise in Aggressive Multiple Myeloma
PHILADELPHIA - A subcutaneous injection of the immune-boosting drug teclistamab was found to be safe and elicit responses in a majority of patients with relapsed or refractory multiple myeloma, according to findings from a multi-institutional phase I study being presented by Alfred L. Garfall, MD, an assistant professor of Medicine in the division of Hematology-Oncology in the Perelman School of Medicine at the University of Pennsylvania, at the annual American Society of Hematology & Exposition Meeting on Dec. 5 (abstract #180).
Of 22 patients treated with the injection dose of teclistamab, who were also chosen for the phase II study, 74 percent experienced a partial response or better.
Teclistamab is a bispecific antibody that activates T cells to attack multiple myeloma cells expressing BCMA, or B cell maturation antigen. These updated results from the phase I show, for the first time, the safety and efficacy of the more convenient injection form of the drug — which was previously reported to be safe and elicit responses when administered intravenously in May 2020.
"These are exciting results for multiple myeloma patients," Garfall said. "To have a single, subcutaneous-injectable drug that is effective in patients whose disease had become resistant to so many prior therapies, is well tolerated, and often yields long-lasting responses is a promising achievement."
Patients who received both the injection (n=65) and infusion (n=84) experienced side effects commonly associated with immune-boosting drugs. Grade 1-2 cytokine release syndrome occurred in 54 percent and 57 percent of patients with intravenous and subcutaneous dosing, respectively, and typically occurred one to two days after the drugs were administered. Other side effects included anemia (55 percent), neutropenia (57 percent), thrombocytopenia (40 percent), and leukopenia (28 percent). Side effects, the authors reported, significantly subsided after the first two weeks. All events were considered within a manageable safety profile.
The overall response rate among the 68 patients treated with the most active intravenous and subcutaneous doses was 69 percent, including 59 percent with very good partial responses or better and 26 percent with complete responses or better.
Penn serves as the leading participant in the global study, enrolling more than 35 patients out of the 149 participants for the trial.
The results offer up promise for relapsed or refractory multiple myeloma patients, who tend to have poor prognoses once they've exhausted other treatment avenues, with a median overall survival of about eight months.
Among 47 patients who responded to teclistamab at the most active dose levels, 94 percent remain on teclistamab after a median follow-up 6.5 months, with some ongoing responses up to 21 months in duration.
"Teclistamab takes a similar approach to cellular therapies, which genetically engineer a patient's T cells to find and destroy cancer cells," Garfall said. "Except, this is jumpstarting the immune system with a single, off-the-shelf drug that takes 15 minutes to administer, in contrast to cellular therapies that take several weeks to manufacture for each patient."
The study is supported by Janssen Pharmaceuticals.
Garfall will present the findings Saturday, Dec. 5, at 12:45 P.M EST virtually.
Editor's Note: Garfall has received consulting fees from Janssen.
Hina Zahid Joined Medical Dialogue in 2017 with a passion to work as a Reporter. She coordinates with various national and international journals and association and covers all the stories related to Medical guidelines, Medical Journals, rare medical surgeries as well as all the updates in the medical field. Email:Â editorial@medicaldialogues.in. Contact no. 011-43720751
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751