We present a comprehensive transcriptomics analysis of metastatic and primary tumor biopsies from MSS mCRC patients treated with botensilimab (BOT; Fc-enhanced anti-CTLA-4) ± balstilimab (BAL; anti-PD-1). This study identified distinct tumor microenvironment states that align along an immunophenotype axis marked by CD74, interferon-γ, and APOBEC3 expression identified previously for primary CRC. Our findings provide novel insights into molecular correlates of immunotherapy response in MSS mCRC, potentially informing future therapeutic strategies to expand ICI efficacy to historically unresponsive tumors.
An expanded cohort of 19 patients with HCC who progressed on or after prior immunotherapy (primarily atezolizumab/bevacizumab) are included in this analysis. The BOT+BAL combination demonstrated durable responses and manageable safety in treatment-refractory patients with HCC previously treated with immunotherapy, supporting further investigation in randomized studies. Despite the small sample size and high percentage of patients with albumin-bilirubin grade 2 liver disease, these results provide early evidence of antitumor activity in a difficult-to-treat disease setting.
1 month ago
Clinical • P1 data • Journal
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CTLA4 (Cytotoxic T-Lymphocyte Associated Protein 4)
P2, N=0, Withdrawn, M.D. Anderson Cancer Center | N=20 --> 0 | Trial completion date: Feb 2028 --> May 2026 | Active, not recruiting --> Withdrawn | Trial primary completion date: Feb 2028 --> May 2026
1 month ago
Enrollment change • Trial completion date • Trial withdrawal • Trial primary completion date