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Updated: Mar 2, 2026

Assessing Urinary Tract Junction Obstruction Defects by Methylene Blue Dye Injection
Published on: October 12, 2017
TMEM67 mutations found in a case of Joubert syndrome with renal hypodysplasia
Yumiko Komatsu1, Toshifumi Suzuki2, Yoshinori Tsurusaki2
1Department of Pediatrics, Kyorin University School of Medicine, 6-20-2, Shinkawa, Mitaka, Tokyo, 181-8611, Japan.
Abstract:
Joubert syndrome is a rare inherited cerebellar ataxia with the dysgenesis of the cerebellar vermis, called the molar tooth sign. The combination of a large number of causative genes, more than 27, and the various clinical features involving multiple organs has established many genotypic-phenotypic correlations in Joubert syndrome. TMEM67 is one of the genes that are relatively well established as contributing to Joubert syndrome with liver involvement. Here, we report a 2-month-old boy who was initially treated for urinary tract infection, which further led to the diagnosis of Joubert syndrome accompanied by renal hypodysplasia with two different mutations: c.2522A>C and c.1065 + 4Adel in TMEM67.
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