Mavorixafor, an Orally Bioavailable CXCR4 Antagonist, Increases Immune Cell Infiltration and Inflammatory Status of Tumor Microenvironment in Patients with Melanoma.

Article Details

Citation
Copy to clipboard

Andtbacka RHI, Wang Y, Pierce RH, Campbell JS, Yushak M, Milhem M, Ross M, Niland K, Arbeit RD, Parasuraman S, Bickley K, Yeung CC, Aicher LD, Smythe KS, Gan L

Mavorixafor, an Orally Bioavailable CXCR4 Antagonist, Increases Immune Cell Infiltration and Inflammatory Status of Tumor Microenvironment in Patients with Melanoma.

Cancer Res Commun. 2022 Aug 31;2(8):904-913. doi: 10.1158/2767-9764.CRC-22-0090. eCollection 2022 Aug.

PubMed ID
36923305 [ View in PubMed
]
Abstract

PURPOSE: Mavorixafor is an oral, selective inhibitor of the CXCR4 chemokine receptor that modulates immune cell trafficking. A biomarker-driven phase Ib study (NCT02823405) was conducted in 16 patients with melanoma to investigate the hypothesis that mavorixafor favorably modulates immune cell profiles in the tumor microenvironment (TME) and to evaluate the safety of mavorixafor alone and in combination with pembrolizumab. EXPERIMENTAL DESIGN: Serial biopsies of melanoma lesions were assessed after 3 weeks of mavorixafor monotherapy and after 6 weeks of combination treatment for immune cell markers by NanoString analysis for gene expression and by multiplexed immunofluorescent staining for in situ protein expression. Serum samples taken at biopsy timepoints were evaluated for key chemokine and cytokine alterations using the Myriad Rules Based Medicine multiplex immunoassays. RESULTS: Within the TME, mavorixafor alone increased CD8(+) T-cell infiltration, granzyme B signal, antigen presentation machinery, and both tumor inflammatory signature (TIS) and IFNgamma gene expression signature scores. Increases in the key serum cytokines CXCL9 and CXCL10 were further enhanced when mavorixafor was combined with pembrolizumab. Adverse events (AE), as assessed by the investigator according to NCI Common Terminology Criteria for Adverse Events (v4.03), related to either mavorixafor or pembrolizumab (>/=15%) were diarrhea, fatigue, maculopapular rash, and dry eye. Reported AEs were all

DrugBank Data that Cites this Article

Drugs