Kumari, S., Govind, A., Shafi, N., Imtiaz, A., Nisa, F. U., Ahmed, A., Rashid, A. B., Hameed, A., Hassan, A., Haque, S., Ganta, N., Levitt, M. J. (2026). HER2 expression heterogeneity (IHC/FISH) in breast cancer: A systematic review and meta-analysis of prognostic implications.. Journal of Clinical Oncology. https://doi.org/10.1200/jco.2026.44.16_suppl.e13023