Spectrum of LMX1B Mutations: from Nail-patella Syndrome to Isolated Nephropathy
Overview
Pediatrics
Affiliations
Nail-patella syndrome (NPS) is an autosomal-dominant disease caused by LMX1B mutations and is characterized by dysplastic nails, absent or hypoplastic patellae, elbow dysplasia, and iliac horns. Renal involvement is the major determinant of the prognosis for NPS. Patients often present with varying degrees of proteinuria or hematuria, and can occasionally progress to chronic renal failure. Recent genetic analysis has found that some mutations in the homeodomain of LMX1B cause isolated nephropathy without nail, patellar or skeletal abnormality (LMX1B-associated nephropathy). The classic term "nail-patella syndrome" would not represent disease conditions in these cases. This review provides an overview of NPS, and highlights the molecular genetics of NPS nephropathy and LMX1B-associated nephropathy. Our current understanding of LMX1B function in the pathogenesis of NPS and LMX1B-associated nephropathy is also presented, and its downstream regulatory networks discussed. This recent progress provides insights that help to define potential targeted therapeutic strategies for LMX1B-associated diseases.
Eastman B, Tabuchi N, Zhang X, Spencer W, Deneris E bioRxiv. 2024; .
PMID: 39713471 PMC: 11661190. DOI: 10.1101/2024.12.12.628165.
Human milk variation is shaped by maternal genetics and impacts the infant gut microbiome.
Johnson K, Heisel T, Allert M, Furst A, Yerabandi N, Knights D Cell Genom. 2024; 4(10):100638.
PMID: 39265573 PMC: 11602576. DOI: 10.1016/j.xgen.2024.100638.
A deletion variant in LMX1B causing nail-patella syndrome in Japanese twins.
Kishio N, Iwama K, Nakanishi S, Shindo R, Yasui M, Nicho N Hum Genome Var. 2024; 11(1):10.
PMID: 38424113 PMC: 10904864. DOI: 10.1038/s41439-024-00266-z.
"Knee-Ding" a Diagnosis: A Case of Nail Patella Syndrome.
Dzhugarian S, Hamamah S, Frugoli A, Shepard A Cureus. 2023; 15(11):e48805.
PMID: 38098902 PMC: 10721234. DOI: 10.7759/cureus.48805.
ATG8-dependent LMX1B-autophagy crosstalk shapes human midbrain dopaminergic neuronal resilience.
Jimenez-Moreno N, Kollareddy M, Stathakos P, Moss J, Anton Z, Shoemark D J Cell Biol. 2023; 222(5).
PMID: 37014324 PMC: 10075225. DOI: 10.1083/jcb.201910133.