Consistent with these in vitro results, BR101801 also suppressed tumor growth, with a reduction in both Mcl-1 and c-Myc levels in DLBCL xenograft tumors. Therefore, BR101801 could also enhance the antitumor effect of Venetoclax synergistically.....This anti-cancer effect of BR101801 was confirmed in animal models, where it effectively inhibited tumor growth by reducing the expression of both c-Myc and Mcl-1. Furthermore, BR101801 exhibited a significant synergistic antitumor effect even in late xenograft models when combined with Venetoclax.