Investment Rating - The report maintains a "Positive" investment rating for the healthcare sector [11] Core Insights - Menin is identified as a crucial epigenetic regulatory factor that drives the abnormal activation of the HOX/MEIS1 axis in acute leukemia subtypes, making it an important target for precision therapy in AML [2][7] - As of June 2025, there are 9 Menin inhibitors in clinical development or already approved globally, with Revumenib showing a complete response rate (CRc) of 81% when combined with Azacitidine and Venetoclax, and a median overall survival (mOS) of 15.5 months [2][8] - Ziftomenib has demonstrated a CRc rate of 94% in newly diagnosed NPM1m patients when used in combination with the "7+3" regimen [9] Summary by Sections Menin Inhibitors Overview - Menin, encoded by the MEN1 gene, plays a key role in gene transcription regulation and maintaining genomic stability, particularly in AML where it drives leukemia stemness and disease persistence [7][20] - Menin inhibitors are particularly effective for AML subtypes that depend on KMT2A rearrangements and NPM1 mutations, which are associated with poor prognosis [27][29] Clinical Development of Menin Inhibitors - Revumenib, developed by Syndax Pharmaceuticals, is the first Menin inhibitor approved by the FDA, showing promising efficacy in clinical trials with a CRc rate of 43.9% and an overall response rate (ORR) of 63.2% [8][33] - Ziftomenib, developed by Kura Oncology, has received FDA fast track designation and has shown high efficacy in initial clinical trials, with CR rates of 88% for NPM1m patients [9][42] - BN104, developed by BioNova, has shown a CR/CRh rate of 60.9% in KMT2A-r patients and is positioned as a potential best-in-class Menin inhibitor [45] Market and Competitive Landscape - The report highlights the competitive landscape with multiple companies, including domestic firms, actively developing Menin inhibitors, indicating a robust pipeline and potential for market growth [31][45] - The acquisition of BN104 by Sihuan Pharmaceutical reflects strategic moves to strengthen global positioning in the Menin inhibitor market [45]