There are multiple definitions:

1. leucine-rich repeat(English)

   • 20-29-residue sequence motifs present in a number of proteins with diverse functions. The primary function of these motifs appears to be to provide a versatile structural framework for the formation of protein-protein interactions
   • NOD, PRR, PYD, RK, TLR, SLRP, DD, DIK, ID, KD, LRRK, PKK, RICK, RIP, SgK288, TNF
   • Molecular biology, Proteins
   • https://doi.org…/jbc.R800020200
   • https://doi.org…038/cmi.2010.10

2. locoregional relapse/recurrence(English)

   • BC, LVI, PMRT, RT
   • Mammary gland, Oncology
   • https://doi.org…urg.2005.02.010
   • https://doi.org…obp.2004.08.009