Large-scale epidemiological study on feline autosomal dominant polycystic kidney disease and identification of novelPKD1gene variants

Author:

Shitamori Fumitaka,Nonogaki Ayaka,Motegi Tomoki,Matsumoto Yuki,Sakamoto Mika,Tanizawa Yasuhiro,Nakamura Yasukazu,Yonezawa Tomohiro,Momoi Yasuyuki,Maeda ShingoORCID

Abstract

ABSTRACTAutosomal dominant polycystic kidney disease (ADPKD) is a common inherited disease in cats. In most cases, the responsible abnormality is a nonsense single nucleotide polymorphism in exon 29 of thePKD1gene (chrE3:g.42858112C>A, the conventionalPKD1variant). Epidemiological studies on feline ADPKD caused by the conventionalPKD1variant have been conducted in several countries, including Japan. However, they were limited to Persian cats or cats already suspected of ADPKD. There are no data on the prevalence of the conventionalPKD1variant among a wider cat population in Japan that is not limited to certain breeds or clinical backgrounds. This large-scale epidemiological study involving 1,281 cats aimed to establish a new genotyping assay to detect the conventionalPKD1variant rapidly. Among the cats examined in this study, 1.8% (23/1,281) harbored the conventionalPKD1variant. The odds of having the conventionalPKD1variant were significantly higher in Persian cats, Scottish Folds, and Exotic Shorthairs than in the other breeds. Furthermore, targeted resequencing ofPKD1was performed in cats with ADPKD and healthy cats to search for new variants that may be involved in ADPKD. We identified four variants unique to ADPKD cats that were not found in healthy cats, all of which were in exon 15. This indicates that variants in exon 15 ofPKD1, in addition to the conventional variant in exon 29, are key factors in the pathogenesis of ADPKD in cats.

Publisher

Cold Spring Harbor Laboratory

Reference29 articles.

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