Targeting CD74 in B-cell Non-Hodgkin Lymphoma With Antibody-Drug Conjugate STRO-001 | Oncotarget

Oncotarget published this research paper in Volume 14, entitled, “Targeting CD74 in B-cell non-Hodgkin lymphoma with the antibody-drug conjugate STRO-001" by the researchers from the Research Development, Sutro Biopharma, South San Francisco, CA; Clinical Development, Sutro Biopharma, South San Francisco, CA.
#openaccess #lymphoma #cancer #cancerresearch #myeloma #research #researchpaper #peerreview #openscience #antibody

DOI - https://doi.org/10.18632/oncotarget.28341

Correspondence to - Xiaofan Li - xli@sutrobio.com, and Arturo Molina - amolina@sutrobio.com

Abstract

Overexpression of CD74, a type II transmembrane glycoprotein involved in MHC class II antigen presentation, has been reported in many B-cell non-Hodgkin lymphomas (NHLs) and in multiple myeloma (MM). STRO-001 is a site-specific, predominantly single-species antibody-drug conjugate (ADC) that targets CD74 and has demonstrated efficacy in xenograft models of MM and tolerability in non-human primates. Here we report results of preclinical studies designed to elucidate the potential role of STRO-001 in B-cell NHL. STRO-001 displayed nanomolar and sub-nanomolar cytotoxicity in 88% (15/17) of cancer cell lines tested. STRO-001 showed potent cytotoxicity on proliferating B cells while limited cytotoxicity was observed on naïve human B cells. A linear dose-response relationship was demonstrated in vivo for DLBCL models SU-DHL-6 and U2932. Tumor regression was induced at doses less than 5 mg/kg, while maximal activity with complete cures were observed starting at 10 mg/kg. In MCL Mino and Jeko-1 xenografts, STRO-001 starting at 3 mg/kg significantly prolonged survival or induced tumor regression, respectively, leading to tumor eradication in both models. In summary, high CD74 expression levels in tumors, nanomolar cellular potency, and significant anti-tumor in DLBCL and MCL xenograft models support the ongoing clinical study of STRO-001 in patients with B-cell NHL.
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Keywords - CD74, antibody-drug conjugate, non-Hodgkin lymphoma, xenograft models, STRO-001

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  Lymphoma - Non-Hodgkin