Mukd-546 -

Mukd‑546 exhibits potent, selective MEK inhibition, favorable pharmacokinetics, and robust antitumor activity in pre‑clinical models. These data support further development of Mukd‑546 as a candidate for clinical evaluation in MAPK‑driven malignancies.

Mukd‑546; MEK inhibitor; MAPK/ERK pathway; pre‑clinical oncology; targeted therapy; KRAS; BRAF 1. Introduction The MAPK/ERK cascade (RAS‑RAF‑MEK‑ERK) orchestrates critical cellular processes such as proliferation, differentiation, and survival. Aberrant activation—most commonly via KRAS, NRAS, or BRAF mutations—underpins the pathogenesis of >30 % of human cancers, including pancreatic ductal adenocarcinoma (PDAC), colorectal carcinoma, and melanoma. While several MEK inhibitors (e.g., trametinib, binimetinib) have entered clinical practice, therapeutic efficacy is limited by dose‑dependent toxicities and rapid emergence of resistance (e.g., MAPK re‑activation, feedback loops). Consequently, there remains a pressing need for next‑generation MEK inhibitors with improved potency, selectivity, and pharmacologic properties. mukd-546

Mukd‑546: Pre‑clinical Evaluation of a Novel Small‑Molecule Inhibitor of the MAPK/ERK Pathway for Targeted Cancer Therapy 30 % of human cancers