IGM Biosciences initiates 1st-in-human clinical trial of IGM-7354 in solid tumor

IGM Biosciences announced that the first patient has been dosed in its Phase 1 clinical trial evaluating IGM-7354, a targeted IL-15/IL-15R IgM antibody which could potentially be used for the treatment of patients with solid and hematologic malignancies. The multicenter, open-label, dose escalation Phase 1 clinical trial will evaluate IGM-7354 intravenously administered as a monotherapy in patients with relapsed and/or refractory solid tumor cancers. The key objectives of this trial are to provide an initial assessment of pharmacokinetics, safety and immune cell proliferation. If IGM-7354 shows an encouraging safety profile and significant increases in T cells and natural killer cells in this clinical trial, the Company may begin combination studies of IGM-7354 with T cell engaging antibodies in 2024. The Company may also decide to pursue combination studies with CAR-T or CAR-NK cells with a partner. "The initiation of this clinical trial is another significant milestone in IGM’s development, as it is the first clinical study of an IgM targeted immune cytokine," said Fred Schwarzer, Chief Executive Officer of IGM Biosciences. "If IGM-7354 shows an encouraging safety profile and significant increases in T cells and NK cells, we believe it may have clinical application in treating cancer in combination with a broad range of oncology drugs that rely on those immune cells for efficacy."