Child Kidney Dis.  2022 Dec;26(2):107-110. 10.3339/ckd.22.038.

Desmopressin responding female nephrogenic diabetes insipidus: a case report

• Lee J
• Cheong HI
• Lee JW
• Pai KS

• KMID: 2538743
• DOI: http://doi.org/10.3339/ckd.22.038

Abstract

Nephrogenic diabetes insipidus, decreased ability to concentrate urine, with production of large amounts of urine, is caused by the refractory response of renal tubules to the action of antidiuretic hormone. This rare disorder, known as X-linked nephrogenic diabetes insipidus, is caused by a mutation in the arginine vasopressin receptor 2 gene. Because it is hereditary, most patients are male. This report highlights a case of nephrogenic diabetes insipidus in a 3-year 5-month-old female; upon presentation to the hospital, her symptoms included frequent urination and consumption of a significant amount of water, which had begun 2 years ago. The results of blood tests showed increased levels of serum antidiuretic hormone, and sellar magnetic resonance imaging showed no abnormality. The results of the water restriction test and the desmopressin administration test confirmed the diagnosis of nephrogenic diabetes insipidus showing a partial response to desmopressin. The results of genetic testing indicated the presence of an arginine vasopressin receptor 2 mutation, a heterozygous missense mutation (p.Val88Met), suggesting inheritance of X-linked nephrogenic diabetes insipidus. This report describes a significant case of symptomatic X-linked nephrogenic diabetes insipidus in a female patient who showed a partial response to desmopressin.

Keyword

Case reports; Fever of unknown origin; Nephrogenic diabetes insipidus; Polydipsia

Figure

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  Fig. 1. Serial test results of serum antidiuretic hormone (ADH) levels with the decreasing tendency (ADH reference range : 0-14.0 pg/mL).

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  Fig. 2. Result of DNA sequencing of the AVPR2 gene (REFSEQ: NM_000054.6) reveals a heterozygous mutation in exon 2 [p.Val(GTG)88Met(ATG)].

Reference

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