AUTHOR=Zhang Hui , Zhang Ling , Lian Jing-Xuan , Kou Zhi-Fu , Zhu Yu , Ma Li-Tian , Zheng Jin , Zhao Can-Jun TITLE=Unveiling causal immune cell–gene associations in multiple myeloma: insights from systematic reviews and Mendelian randomization analyses JOURNAL=Frontiers in Medicine VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2025.1456732 DOI=10.3389/fmed.2025.1456732 ISSN=2296-858X