LIMS3 (LIM zinc finger domain containing 3) is a LIM-domain containing protein located on chromosome 2. While direct functional characterization is limited in the provided literature, LIMS3 is identified as an evolutionarily conserved developmental gene involved in nuclear-cytoplasm trafficking and signaling for tissue patterning and differentiation 1. The gene's developmental importance is evident from its association with congenital abnormalities when deleted; a patient with intermittent 2q13 deletion encompassing LIMS3 displayed multiple congenital anomalies with greater severity than comparable cases, suggesting LIMS3 contributes to normal developmental patterning 1. LIMS3 deletions have also been identified in nephronophthisis (NPHP) patients as part of larger copy number variants; heterozygous deletion of a region including LIMS3 was associated with accelerated chr2 kidney disease progression, implying LIMS3 may influence renal development or function 2. The clinical significance of LIMS3 lies in its role as a potential modifier of disease severity in developmental and renal disorders, though the specific molecular mechanisms underlying its function require further investigation.